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d a t a sh eet product speci?cation supersedes data of april 1993 file under integrated circuits, ic02 1996 oct 25 integrated circuits tda4680 video processor with automatic cut-off and white level control
1996 oct 25 2 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 features operates from an 8 v dc supply black level clamping of the colour difference, luminance and rgb input signals with coupling-capacitor dc level storage two fully-controlled, analog rgb inputs, selected either by fast switch signals or via i 2 c-bus saturation, contrast and brightness adjustment via i 2 c-bus same rgb output black levels for y/cd and rgb input signals timing pulse generation from either a 2 or 3-level sandcastle pulse for clamping, horizontal and vertical synchronization, cut-off and white level timing pulses automatic cut-off control with picture tube leakage current compensation software-based automatic white level control or fixed white levels via i 2 c-bus cut-off and white level measurement pulses in the last 4 lines of the vertical blanking interval (i 2 c-bus selection for pal, secam, or ntsc, pal-m) increased rgb signal bandwidths for progressive scan and 100 hz operation (selected via i 2 c-bus) two switch-on delays to prevent discolouration before steady-state operation average beam current and peak drive limiting pal/secam or ntsc matrix selection via i 2 c-bus three adjustable reference voltage levels (via i 2 c-bus) for automatic cut-off and white level control emitter-follower rgb output stages to drive the video output stages hue control output for the tda4555, tda4650/t, tda4655/t or tda4657. general description the tda4680 is a monolithic integrated circuit with a colour difference interface for video processing in tv receivers. its primary function is to process the luminance and colour difference signals from multistandard colour decoders, tda4555, tda4650/t, tda4655/t or tda4657, colour transient improvement (cti) ic, tda4565, picture signal improvement (psi) ic, tda4670, or from a feature module. the required input signals are: luminance and negative colour difference signals 2 or 3-level sandcastle pulse for internal timing pulse generation i 2 c-bus data and clock signals for microcontroller control. two sets of analog rgb colour signals can also be inserted, e.g. one from a peritelevision connector and the other from an on-screen display generator; both inputs are fully-controlled internally. the tda4680 includes full i 2 c-bus control of all parameters and functions with automatic cut-off and white level control of the picture tube cathode currents. it provides rgb output signals for the video output stages. there is a very similar ic tda4681 available. the only differences are in the ntsc matrix. ordering information type number package name description version tda4680 dip28 plastic dual in-line package; 28 leads (600 mil) sot117-1 TDA4680WP plcc28 plastic leaded chip carrier; 28 leads sot261-2
1996 oct 25 3 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 quick reference data symbol parameter min. typ. max. unit v p supply voltage (pin 5) 7.2 8.0 8.8 v i p supply current (pin 5) - 85 - ma v 8(p-p) luminance input (peak-to-peak value) - 0.45 - v v 6(p-p) - (b - y) input (peak-to-peak value) - 1.33 - v v 7(p-p) - (r - y) input (peak-to-peak value) - 1.05 - v v 14 3-level sandcastle pulse h+v - 2.5 - v h - 4.5 - v bk - 8.0 - v 2-level sandcastle pulse h+v - 2.5 - v bk - 4.5 - v v i(p-p) rgb input signals at pins 2, 3, 4, 10, 11 and 12 (peak-to-peak value) - 0.7 - v v o(b-w) rgb outputs at pins 24, 22 and 20 (black-to-white value) - 2.0 - v t amb operating ambient temperature 0 - 70 c
1996 oct 25 4 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 block diagram handbook, full pagewidth tda4680 pal/secam, ntsc matrix fast signal source switch, blanking 1 saturation and contrast adjust brightness adjust, blanking 2, measurement pulses white point adjust cut-off adjust, output stages r g b r g b r g b r g b r g b r g b 24 22 20 8 7 6 2 3 4 1 10 11 12 13 r g b 2 2 2 r g b 1 1 1 y - (r - y) - (b - y) 9 r 4 x 6-bit d/a converters 3 x 6-bit d/a converters peak drive and average beam current limiting 2 x 8-bit control registers y-matrix sandcastle pulse detector timing generator bk h + v (h) sandcastle pulse 14 6-bit d/a converter 1st and 2nd switch-on delays white level and cut-off comparators 3 x 2-bit white level registers and ponres 3 x 6-bit reference registers, d/a converter i 2 c-bus transceiver 27 28 sda scl 26 hue control voltage 15 16 average beam current 17 timing pulses v = 8 v p 5 leakage, cut-off and white level current input 18 19 ponres, cb0 and cb1, cg0 and cg1, cr0 and cr1 a75 to a70, a85 to a80, a95 to a90 a45 to a40, a55 to a50, a65 to a60 aa5 to aa0 a05 to a00, a15 to a10, a25 to a20, a35 to a30 bren sc5 delof bcof, fsbl, fswl, wpen, vbw2, vbw1, vbw0 satof fsdis2, fson2, fsdis1, fson1 nmen r w r c rgb outputs supply g b 21 23 25 cut-off storage leakage storage peak drive limiting storage white level control cut-off control i 2 c-bus i 2 c-bus data and control signals rar bcof fsw 1 fsw 2 med693 fig.1 block diagram.
1996 oct 25 5 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 pinning symbol pin description fsw 2 1 fast switch 2 input r 2 2 red input 2 g 2 3 green input 2 b 2 4 blue input 2 v p 5 supply voltage - (b - y) 6 colour difference input - (b - y) - (r - y) 7 colour difference input - (r - y) y 8 luminance input gnd 9 ground r 1 10 red input 1 g 1 11 green input 1 b 1 12 blue input 1 fsw 1 13 fast switch 1 input sc 14 sandcastle pulse input bcl 15 average beam current limiting input c pdl 16 storage capacitor for peak drive limiting c l 17 storage capacitor for leakage current wi 18 white level measurement input ci 19 cut-off measurement input b o 20 blue output c b 21 blue cut-off storage capacitor g o 22 green output c g 23 green cut-off storage capacitor r o 24 red output c r 25 red cut-off storage capacitor hue 26 hue control output sda 27 i 2 c-bus serial data input/output scl 28 i 2 c-bus serial clock input symbol pin description fig.2 pin configuration for dip-version. handbook, halfpage tda4680 med694 1 2 3 4 5 6 7 8 9 10 11 12 13 14 fsw 2 r 2 g 2 b 2 v p - (b - y) - (r - y) y gnd r 1 g 1 b 1 fsw 1 sc scl sda hue c r r o c g g o c b b o ci wi c l c pdl bcl 28 27 26 25 24 23 22 21 20 19 18 17 16 15 fig.3 pin configuration for plcc-version. TDA4680WP med695 5 6 7 8 9 10 11 v p - (b - y) - (r - y) y gnd r 1 g 1 c r r o c g g o c b b o ci b 2 g 2 r 2 fsw 2 scl sda hue b 1 fsw 1 sc bcl c pdl c l wi 25 24 23 22 21 20 19 12 13 14 15 16 17 18 4 3 2 1 28 27 26
1996 oct 25 6 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 i 2 c-bus control the i 2 c-bus transmitter/receiver provides the data bytes to select and adjust the following functions and parameters: brightness adjust saturation adjust contrast adjust hue control voltage rgb gain adjust rgb reference voltage levels peak drive limiting selection of the vertical blanking interval and measurement lines for cut-off and white level control according to transmission standard selects either 3-level or 2-level (5 v) sandcastle pulse enables/disables input clamping pulse delay enables/disables white level control enables cut-off control; enables output clamping enables/disables full screen white level enables/disables full screen black level selects either pal/secam or ntsc matrix enables saturation adjust; enables nominal saturation enables/disables synchronization of the execution of i 2 c-bus commands with the vertical blanking interval reads the result of the comparison of the nominal and actual rgb signal levels for automatic white level control. i 2 c-bustransmitter/receiver and data transfer i 2 c- bus specification the i 2 c-bus is a bidirectional, two-wire, serial data bus for intercommunication between ics in a system. the microcontroller transmits/receives data from the i 2 c-bus transceiver in the tda4680 over the serial data line sda (pin 27) synchronized by the serial clock line scl (pin 28). both lines are normally connected to a positive voltage supply through pull-up resistors. data is transferred when the scl line is low. when scl is high the serial data line sda must be stable. a high-to-low transition of the sda line when scl is high is defined as a start bit. a low-to-high transition of the sda line when scl is high is defined as a stop bit. each transmission must start with a start bit and end with a stop bit. the bus is busy after a start bit and is only free again after a stop bit has been transmitted. i 2 c- bus receiver ( microcontroller write mode ) each transmission to/from the i 2 c-bus transceiver consists of at least three bytes following the start bit. each byte is acknowledged by an acknowledge bit immediately following each byte. the first byte is the module address (mad) byte, also called slave address byte. this consists of the module address, 1000100 for the tda4680, plus the r/ w bit (see fig.4). when the tda4680 is a slave receiver (r/ w = 0) the module address byte is 10001000 (88h). when the tda4680 is a slave transmitter (r/ w = 1) the module address byte is 10001001 (89h). the length of a data transmission is unrestricted, but the module address and the correct sub-address must be transmitted before the data byte(s). the order of data transmission is shown in figs 5 and 6. without auto-increment (bren = 0 or 1) the module address (mad) byte is followed by a sub-address (sad) byte and one data byte only (see fig.5).
1996 oct 25 7 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 fig.4 the module address byte. handbook, full pagewidth ack x r/w 0 0 1 0 0 module address 0 1 msb lsb med696 fig.5 data transmission without auto-increment (bren = 0 or 1). handbook, full pagewidth sto sad start condition data byte stop condition mad sta med697 fig.6 data transmission with auto-increment (bren = 0). handbook, full pagewidth sad start condition data byte stop condition mad sta med698 sto data bytes
1996 oct 25 8 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 a uto - increment the auto-increment format enables quick slave receiver initialization by one transmission, when the i 2 c-bus control bit bren = 0 (see control register bits of table 1). if bren = 1 auto-increment is not possible. if the auto-increment format is selected, the mad byte is followed by a sad byte and by the data bytes of consecutive sub-addresses (fig.6). all sub-addresses from 00h to 0fh are automatically incremented, the sub-address counter wraps round from 0fh to 00h. reserved sub-addresses 0bh, 0eh and 0fh are treated as legal but have no effect. sub-addresses outside the range 00h and 0fh are not acknowledged by the device and neither auto-increment nor any other internal operation takes place (for versions v1 to v5 sub-addresses outside the range 00h and 0fh are acknowledged but neither auto-increment nor any other internal operation takes place). sub-addresses are stored in the tda4680 to address the following parameters and functions (see table 1): brightness adjust saturation adjust contrast adjust hue control voltage rgb gain adjust rgb reference voltage levels peak drive limiting adjust control register functions. the data bytes d7 to d0 (see table 1) provide the data of the parameters and functions for video processing. c ontrol register 1 vbwx (vertical blanking window): x = 0, 1 or 2. vbwx selects the vertical blanking interval and positions the measurement lines for cut-off and white level control. the actual lines in the vertical blanking interval after the start of the vertical pulses selected as measurement lines for cut-off and white level control are shown in table 2. the standards marked with (*) are for progressive line scan at double line frequency (2f l ), i.e. approximately 31 khz. nmen (ntsc matrix enable): 0 = pal/secam matrix 1 = ntsc matrix. wpen (white pulse enable): 0 = white measuring pulse disabled 1 = white measuring pulse enabled. bren (buffer register enable): 0 = new data is executed as soon as it is received 1 = data is stored in buffer registers and is transferred to the data registers during the next vertical blanking interval. the i 2 c-bus transceiver does not accept any new data until this data is transferred into the data registers. delof (delay off) delays the leading edge of clamping pulses: 0 = delay enabled 1 = delay disabled. sc5 (sandcastle 5 v): 0 = 3-level sandcastle pulse 1 = 2-level (5 v) sandcastle pulse. c ontrol register 2 fson2 (fast switch 2 on) fsdis2 (fast switch 2 disable) fson1 (fast switch 1 on) fsdis1 (fast switch 1 disable) the rgb input signals are selected by fson2 and fson1 or fsw 2 and fsw 1 : fson2 has priority over fson1 fsw 2 has priority over fsw 1 fsdis1 and fsdis2 disable fsw 1 and fsw 2 (see table 3). bcof (black level control off): 0 = automatic cut-off control enabled 1 = automatic cut-off control disabled; rgb outputs are clamped to fixed dc levels. fsbl (full screen black level): 0 = normal mode 1 = full screen black level (cut-off measurement level during full field). fswl (full screen white level): 0 = normal mode 1 = full screen white level (white measurement level during full field).
1996 oct 25 9 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 satof (saturation control off): 0 = saturation control enabled 1 = saturation control disabled, nominal saturation enabled. i 2 c- bus transmitter ( microcontroller read mode ) as an i 2 c-bus transmitter, r/ w = 1, the tda4680 sends a data byte from the status register to the microcontroller. the data byte consists of following bits: ponres, cb1, cb0, cg1, cg0, cr1, cr0 and 0, where ponres is the most significant bit. ponres (power on reset) monitors the state of tda4680s supply voltage: 0 = normal operation 1 = supply voltage has dropped below approximately 6.0 v (usually occurs when the tv receiver is switched on or the supply voltage was interrupted). when ponres changes state from a logic low to a logic high all data and function bits are set to logic low. 2- bit white level error signal (see table 4) cb1, cb0 = 2-bit white level of the blue channel. cg1, cg0 = 2-bit white level of the green channel. cr1, cr0 = 2-bit white level of the red channel. table 1 sub-address (sad) and data bytes; note 1 note 1. x = dont care. function sad (hex) msb lsb d7 d6 d5 d4 d3 d2 d1 d0 brightness 00 0 0 a05 a04 a03 a02 a01 a00 saturation 01 0 0 a15 a14 a13 a12 a11 a10 contrast 02 0 0 a25 a24 a23 a22 a21 a20 hue control voltage 03 0 0 a35 a34 a33 a32 a31 a30 red gain 04 0 0 a45 a44 a43 a42 a41 a40 green gain 05 0 0 a55 a54 a53 a52 a51 a50 blue gain 06 0 0 a65 a64 a63 a62 a61 a60 red level reference 07 0 0 a75 a74 a73 a72 a71 a70 green level reference 08 0 0 a85 a84 a83 a82 a81 a80 blue level reference 09 0 0 a95 a94 a93 a92 a91 a90 peak drive limit 0a 0 0 aa5 aa4 aa3 aa2 aa1 aa0 reserved 0b xxxxxxxx control register 1 0c sc5 delof bren wpen nmen vbw2 vbw1 vbw0 control register 2 0d satof fswl fsbl bcof fsdis2 fson2 fsdis1 fson1 reserved 0e xxxxxxxx reserved 0f xxxxxxxx
1996 oct 25 10 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 table 2 cut-off and white level measurement lines; notes 1 to 3 notes 1. the line numbers given are those of the horizontal pulse counts after the start of the vertical component of the sandcastle pulse. 2. * line frequency of approximately 31 khz. 3. (eb) is extended blanking. table 3 signal input selection by the fast source switches; notes 1 to 4 notes 1. h: logical high implies that the voltage >0.9 v. 2. l: logical low implies that the voltage <0.4 v. 3. x = dont care. 4. on indicates the selected input signal. vbw2 vbw1 vbw0 r g b white standard 0 0 0 19 20 21 22 pal/secam 0 0 1 16 17 18 19 ntsc/pal m 0 1 0 22 23 24 25 pal/secam (eb) 1 0 0 38, 39 40, 41 42, 43 44, 45 pal*/secam* 1 0 1 32, 33 34, 35 36, 37 38, 39 ntsc*/pal m* 1 1 0 44, 45 46, 47 48, 49 50, 51 pal*/secam* (eb) i 2 c-bus control bits analog switch signals input selected fson2 fsdis2 fson1 fsdis1 fsw 2 (pin 1) fsw 1 (pin 13) rgb 2 rgb 1 y/cd llll l l on lh on hxon lllh l x on hxon llhx l x on hxon lhll x l on xh on lhlh x x on lhhx x x on hxxx x x on
1996 oct 25 11 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 table 4 2-bit white level error signals; bits cx1 and cx0 limiting values in accordance with the absolute maximum rating system (iec 134). cx1 cx0 interpretation 0 0 rar (reset-after-read): no new measurements since last read 1 0 actual (measured) white level less than the tolerance range 1 1 actual (measured) white level within the tolerance range 0 1 actual (measured) white level greater than the tolerance range symbol parameter min. max. unit v p supply voltage (pin 5) - 8.8 v v i input voltage (pins 1 to 8, 10 to 13, 16, 21, 23 and 25) - 0.1 +v p v input voltage (pins 14, 15, 18 and 19) - 0.7 v p + 0.7 v input voltage (pins 27 and 28) - 0.1 +8.8 v i av average current (pins 20, 22 and 24) +4 - 10 ma i m peak current (pins 20, 22 and 24) +4 - 20 ma i 18 input current 0 2 ma i 26 output current +0.5 - 8ma t stg storage temperature - 20 +150 c t amb operating ambient temperature 0 70 c p tot total power dissipation sot117-1 - 1.2 w sot261-2 - 1.0 w
1996 oct 25 12 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 characteristics all voltages are measured in test circuit of fig.10 with respect to gnd (pin 9); v p = 8.0 v; t amb =25 c; nominal signal amplitudes (black-to-white) at output pins 24, 22 and 20; nominal settings of brightness, contrast, saturation and white level control; without beam current or peak drive limiting; unless otherwise speci?ed. symbol parameter conditions min. typ. max. unit supply (pin 5) v p supply voltage 7.2 8.0 8.8 v i p supply current - 85 110 ma colour difference inputs [ - (b - y): pin 6; - (r - y): pin 7] v 6(p-p) - (b - y) input (peak-to-peak value) notes 1 and 2 - 1.33 - v v 7(p-p) - (r - y) signal (peak-to-peak value) notes 1 and 2 - 1.05 - v v 6,7 internal dc bias voltage at black level clamping - 3.1 - v ? i 6,7 ? input current during line scan -- 0.15 m a at black level clamping 100 --m a r 6,7 ac input resistance 10 -- m w luminance/sync (vbs; y: pin 8) v i(p-p) luminance input voltage at pin 8 (peak-to-peak value) note 2 - 0.45 - v v 8(bias) internal dc bias voltage at black level clamping - 3.1 - v ? i 8 ? input current during line scan -- 0.15 m a at black level clamping 100 --m a r 8 ac input resistance 10 -- m w rgb input 1 (r 1 : pin 10; g 1 : pin 11; b 1 : pin 12) v i(p-p) input voltage at pins 10, 11 and 12 (peak-to-peak value) note 2 - 0.7 - v v 10/11/12(bias) internal dc bias voltage at black level clamping - 5.4 - v ? i 10/11/12 ? input current during line scan -- 0.15 m a at black level clamping 100 --m a r 10/11/12 ac input resistance 10 -- m w rgb input 2 (r 2 : pin 2, g 2 : pin 3, b 2 : pin 4) v i(p-p) input voltage at pins 2, 3 and 4 (peak-to-peak value) note 2 - 0.7 - v v 2/3/4 internal dc bias voltage at black level clamping - 5.4 - v ? i 2/3/4 ? input current during line scan -- 0.15 m a at black level clamping 100 --m a r 2/3/4 ac input resistance 10 -- m w
1996 oct 25 13 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 fast signal switch fsw 1 (pin 13) to select y, cd or r 1 , g 1 , b 1 inputs (control bits: see table 3) v 13 voltage to select y and cd -- 0.4 v voltage range to select r 1 , g 1 , b 1 0.9 - 5.0 v r 13 internal resistance to ground - 4.0 - k w d t difference between transit times for signal switching and signal insertion -- 10 ns fast signal switch fsw 2 (pin 1) to select y, cd/r 1 , g 1 , b 1 or r 2 , g 2 , b 2 inputs (control bits: see table 3) v 1 voltage to select y, cd/r 1 , g 1 , b 1 -- 0.4 v voltage to select r 2 , g 2 , b 2 0.9 - 5.0 v r 1 internal resistance to ground - 4.0 - k w d t difference between transit times for signal switching and signal insertion -- 10 ns saturation adjust [acts on internal rgb signals under i 2 c-bus control; sub-address 01h (bit resolution 1.5% of maximum saturation); data byte 3fh for maximum saturation, data byte 23h for nominal saturation and data byte 00h for minimum saturation] d s saturation below maximum at 23h - 5 - db at 00h; f = 100 khz - 50 - db contrast adjust [acts on internal rgb signals under i 2 c-bus control; sub-address 02h (bit resolution 1.5% of maximum contrast); data byte 3fh for maximum contrast, data byte 2ch for nominal contrast and data byte 00h for minimum contrast] d c contrast below maximum at 2ch - 3 - db at 00h - 22 - db brightness adjust [acts on internal rgb signals under i 2 c-bus control; sub-address 00h (bit resolution 1.5% of brightness range); data byte 3fh for maximum brightness, data byte 27h for nominal brightness and data byte 00h for minimum brightness] d br black level shift of nominal signal amplitude referred to cut-off measurement level at 3fh - 30 - % at 00h -- 50 - % white potentiometers [under i 2 c-bus control; sub-addresses 04h (red), 05h (green) and 06h (blue); data byte 3fh for maximum gain; data byte 22h for nominal gain and data byte 00h for minimum gain]; note 3 d g v relative to nominal gain increase of ac gain at 3fh - 60 - % decrease of ac gain at 00h - 60 - % symbol parameter conditions min. typ. max. unit
1996 oct 25 14 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 rgb outputs (pins 24, 22 and 20; positive going output signals and no peak drive limitation; sub-address 0ah = 3fh); note 4 v o(b-w) nominal output signals (black-to-white value) - 2.0 - v maximum output signals (black-to-white value) 3.2 -- v d v o spread between rgb output signals -- 10 % v o output voltages 6.8 - 0.8 v v 24,22,20 voltage of cut-off measurement line output clamping (bcof = 1) 2.3 2.5 2.7 v i int internal current sources - 5.0 - ma r o output resistance - 65 110 w frequency response d frequency response of y path (from pin 8 to pins 24, 22, 20) f = 10 mhz -- 3db frequency response of cd path (from pins 7 to 24 and 6 to 20) f = 8 mhz -- 3db frequency response of rgb 1 path (from pins 10 to 24, 11 to 22 and 12 to 20) f = 10 mhz -- 3db frequency response of rgb 2 path (from pins 2 to 24, 3 to 22 and 4 to 20) f = 10 mhz -- 3db sandcastle pulse detector (pin 14) c ontrol bit sc5 = 0; 3- level ; notes 5 and 6 v 14 sandcastle pulse voltage for horizontal and vertical blanking pulses 2.0 2.5 3.0 v for horizontal pulses (line count) 4.0 4.5 5.0 v for burst key pulses 6.3 - v p + 0.7 v c ontrol bit sc5 = 1; 2- level ; note 5 v 14 sandcastle pulse voltage for horizontal and vertical blanking pulses 2.0 2.5 3.0 v for burst key pulses 4.0 4.5 v p + 0.7 v symbol parameter conditions min. typ. max. unit
1996 oct 25 15 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 g eneral i 14 input current v 14 < 0.5 v - 100 --m a t d leading edge delay of the clamping pulse control bit delof = 0 - 1.5 -m s control bit delof = 1 - 0 -m s t bk required burst key pulse time control bit delof = 0; normally used with f l 3 --m s control bit delof = 1; normally used with 2f l 1.5 --m s n pulse required horizontal or burst key pulses during vertical blanking interval e.g. at interlace scan (vbw2 = 0) 4 - 29 - e.g. at progressive line scan (vbw2 = 1) 8 - 57 - average beam current limiting (pin 15); note 7 v c(15) contrast reduction starting voltage - 4.0 - v d v c(15) voltage difference for full contrast reduction -- 2.0 - v v br(15) brightness reduction starting voltage - 2.5 - v d v br(15) voltage difference for full brightness reduction -- 1.6 - v peak drive limiting voltage [pin 16; internal peak drive limiting level (v pdl ) acts on rgb outputs under i 2 c-bus control; sub-address 0ah]; note 8 v 20/22/24 rgb output voltages at 00h -- 3.0 v at 3fh 6.5 -- v i 16 charge current -- 1 -m a discharge current during peak white - 5 - ma v 16 internal voltage limitation 4.5 -- v v c(16) contrast reduction starting voltage - 4.0 - v d v c(16) voltage difference for full contrast reduction -- 2.0 - v v br(16) brightness reduction starting voltage - 2.5 - v d v br(16) voltage difference for full brightness reduction -- 1.6 - v symbol parameter conditions min. typ. max. unit
1996 oct 25 16 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 automatic cut-off and white level control (pins 19 and 18); notes 9 to 11; see fig.8 v 19 permissible voltage (also during scanning period) -- v p - 1.4 v i 19 output current -- - 140 m a input current 150 --m a additional input current only during warming up - 0.5 - ma v 24,22,20 warming up amplitude (under i 2 c-bus control; sub-address 0ah) switch-on delay 1 - v pdl - 0.7 - v v 19(th) voltage threshold for picture tube cathode warming up switch-on delay 1 - 5.0 - v v ref internally controlled voltage during leakage measurement period - 3.0 - v d ata byte 07h for red reference level , data byte 08h for green reference level and data byte 09h for blue reference level d v 19 difference between v meas (cut-off or white level measurement voltage) and v ref 3fh (maximum v meas ) 1.5 -- v 20h (nominal v meas ) - 1.0 - v 00h (minimum v meas ) -- 0.5 v i 18 input current white level measurement -- 800 m a r 18 internal resistance to v ref ; i 18 800 m a - 100 -w d v 19 white level register (measured value within tolerance range) white level measurement - 250 - mv storage of cut-off control voltage/output clamping voltage (pins 25, 23 and 21) ? i 21/23/25 ? charge and discharge currents during cut-off measurement lines - 0.3 - ma input currents of storage inputs outside measurement time -- 0.1 m a storage of leakage information (pin 17) ? i 17 ? charge and discharge currents during leakage measurement period - 0.4 - ma leakage current outside time lm -- 0.1 m a v 17 voltage for reset to switch-on below -- 3.0 v hue control (under i 2 c-bus control; sub-address 03h; data byte 3fh for maximum voltage; data byte 20h for nominal voltage and data byte 00h for minimum voltage); note 12 v 26 output voltage at 3fh 4.8 -- v at 20h - 3.0 - v at 00h -- 1.0 v i int current of the internal current source at pin 26 500 --m a symbol parameter conditions min. typ. max. unit
1996 oct 25 17 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 notes to the characteristics 1. the values of the - (b - y) and - (r - y) colour difference input signals are for a 75% colour-bar signal. 2. the pins are capacitively coupled to a low ohmic source, with a recommended maximum output impedance of 600 w . 3. the white potentiometers affect the amplitudes of the rgb output signals including the white measurement pulses. 4. the rgb outputs at pins 24, 22 and 20 are emitter followers with current sources. 5. sandcastle pulses are compared with internal threshold voltages independent of v p . the threshold voltages separate the components of the sandcastle pulse. the particular component is generated when the voltage on pin 14 exceeds the defined internal threshold voltage. the internal threshold voltages (control bit sc5 = 0) are: 1.5 v for horizontal and vertical blanking pulses 3.5 v for horizontal pulses 6.0 v for the burst key pulse. the internal threshold voltages (control bit sc5 = 1) are: 1.5 v for horizontal and vertical blanking pulses 3.5 v for the burst key pulse. 6. a sandcastle pulse with a maximum voltage equal to (v p + 0.7 v) is obtained by limiting a 12 v sandcastle pulse. 7. average beam current limiting reduces the contrast, at minimum contrast it reduces the brightness. 8. peak drive limiting reduces the rgb outputs by reducing the contrast, at minimum contrast it reduces the brightness. the maximum rgb outputs are determined via the i 2 c-bus under sub-address 0ah. when an rgb output exceeds the maximum voltage, peak drive limiting is delayed by one horizontal line. i 2 c-bus transceiver clock scl (pin 28) f scl input frequency range 0 - 100 khz v il low level input voltage -- 1.5 v v ih high level input voltage 3.0 - 6.0 v i il low level input current v 28 = 0.4 v - 10 --m a i ih high level input current -- 10 m a t l clock pulse low 4.7 --m s t h clock pulse high 4.0 --m s t r rise time -- 1.0 m s t f fall time -- 0.3 m s i 2 c-bus transceiver data input/output sda (pin 27) v il low level input voltage -- 1.5 v v ih high level input voltage 3.0 - 6.0 v i il low level input current v 27 = 0.4 v - 10 --m a i ih high level input current -- 10 m a i ol low level output current v 27 = 0.4 v 3.0 -- ma t r rise time -- 1.0 m s t f fall time -- 0.3 m s t su;dat data set-up time 0.25 --m s symbol parameter conditions min. typ. max. unit
1996 oct 25 18 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 9. the vertical blanking interval is defined by a vertical pulse which contains 4 (8) or more horizontal pulses; it begins with the start of the vertical pulse and ends with the end of the white measuring line. if the vertical pulse is longer than the selected vertical blanking window the blanking period ends with the end of the complete line after the end of the vertical pulse. the counter cycle time is 31 (63) horizontal pulses. if the vertical pulse contains more than 29 (57) horizontal pulses, the black level storage capacitors will be discharged while all signals are blanked. during leakage current measurement, the rgb channels are blanked to ultra-black level. during cut-off measurement one channel is set to the measurement pulse level, the other channels are blanked to ultra-black. since the brightness adjust shifts the colour signal relative to the black level, the brightness adjust is disabled during the vertical blanking interval (see figs 7 and 8). 10. during picture cathode warming up (first switch-on delay) the rgb outputs (pins 24, 22 and 20) are blanked to the ultra-black level during line scan. during the vertical blanking interval a white-level monitor pulse is fed out on the rgb outputs and the cathode currents are measured. when the voltage threshold on pin 19 is greater than 5.0 v, the monitor pulse is switched off and cut-off and white level control are activated (second switch-on delay). as soon as cut-off control stabilizes, rgb output blanking is removed. 11. range of cut-off measurement level at the rgb outputs is 1 to 5 v. the recommended value is 3 v. 12. the hue control output at pin 26 is an emitter follower with current source. table 5 demodulator axes and ampli?cation factors table 6 pal/secam and ntsc matrix; notes 1 and 2 notes 1. pal/secam signals are matrixed by the equation: v g - y = - 0.51v r - y - 0.19v b - y ntsc signals are matrixed by the equations (hue phase shift of - 5 degrees): v r - y* = 1.57v r - y - 0.41v b - y ; v g - y* = - 0.43v r - y - 0.11v b - y ; v b - y* =v b - y in the matrix equations: v r - y and v b - y are conventional pal demodulation axes and amplitudes at the output of the ntsc demodulator. v g - y* , v r - y* and v b - y* are the ntsc-modified colour difference signals; this is equivalent to the demodulator axes and amplification factors shown in table 5. v g - y* = - 0.27v r - y* - 0.22v b - y* . 2. the vertical blanking interval is selected via the i 2 c-bus (see table 2 and fig.8). vertical blanking is determined by the vertical component of the sandcastle pulse; this vertical component has priority when it is longer than the vertical blanking interval of the transmission standard. parameter ntsc pal (b - y)* demodulator axis 0 0 (r - y)* demodulator axis 115 90 (r - y)* ampli?cation factor 1.97 1.14 (b - y)* ampli?cation factor 2.03 2.03 matrix nmen pal/secam 0 ntsc 1
1996 oct 25 19 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 fig.7 cut-off and white level measurement pulses. handbook, full pagewidth ultra-black level (1) (2) cut-off measurement level for green signal white measurement level for green signal med701 (1) maximum brightness. (2) nominal brightness. handbook, full pagewidth 621 622 623 624 625 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 26 25 27 28 mr mg mb wr wg wb mr mg mb wr wg wb mr mg mb wr wg wb pal, secam ntsc, pal m pal, secam v component of the sandcastle pulse vertical flyback 850 s (leakage current measurement time) vertical blanking interval, 22 complete lines v component of the sandcastle pulse vertical blanking interval, 19 complete lines v component of the sandcastle pulse lm lm lm vertical blanking interval, 25 complete lines (with increased vertical blanking interval) cut-off and white level measurement pulses med702 fig.8 leakage current, cut-off and white level current measurement timing diagram.
1996 oct 25 20 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 internal pin configuration handbook, full pagewidth + tda4680 cl cl cl cl cl cl cl cl cl 1234567891011121314 24 22 20 26 25 mr 23 mg 21 mb 28 27 15 19 he 18 wm reference 17 lm 16 esd protection diode on all pins except pins 5, 9, 27 and 28 + zener diode protection for pins 27 and 28 (version v6) med699 fig.9 internal circuits.
1996 oct 25 21 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 test and application information fig.10 test and application circuit. (1) insert link br1 if average beam current is not required. (2) value depends on video output current stages and picture tube. handbook, full pagewidth med700 1 2 3 fsw 2 fsw 1 g 2 r 2 4 b 2 fsw 2 g 2 r 2 b 2 5 v p 10 nf 10 nf 10 nf 10 nf 10 nf 10 nf 10 nf 75 w 10 nf 10 nf 47 nf 6 - (b - y) 7 - (r - y) 8 y - (b - y) - (r - y) y 9 gnd 10 11 r 1 12 g 1 13 b 1 14 27 28 26 25 24 23 22 21 20 19 18 17 16 15 sc fsw 1 r 1 g 1 b 1 sc bcl 300 nf 1 nf c pdl 1n4148 1n4148 1n4148 br1 (1) 1n4148 75 w 75 w 75 w 75 w 3.9 k w v p = 8 v beam current 10 k w 3.9 k w 75 w 75 w 75 w 4.7 k w 100 w 100 w 2.2 k w (2) 22 m h 220 m f 22 m f 1 m f 82 k w con2 c b 220 nf c g 220 nf c r 220 nf c l bzx79 c6v2 wi ci b o 10 9 8 7 g o r o g o b o ci r o hue sda scl scl sda hue 6 5 4 3 2 1 200 v gnd + 12 v tda4680
1996 oct 25 22 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 package outlines unit a max. 1 2 b 1 (1) (1) (1) cd e w em h l references outline version european projection issue date iec jedec eiaj mm inches dimensions (inch dimensions are derived from the original mm dimensions) sot117-1 92-11-17 95-01-14 a min. a max. b z max. m e e 1 1.7 1.3 0.53 0.38 0.32 0.23 36.0 35.0 14.1 13.7 3.9 3.4 0.25 2.54 15.24 15.80 15.24 17.15 15.90 1.7 5.1 0.51 4.0 0.066 0.051 0.020 0.014 0.013 0.009 1.41 1.34 0.56 0.54 0.15 0.13 0.01 0.10 0.60 0.62 0.60 0.68 0.63 0.067 0.20 0.020 0.16 051g05 mo-015ah m h c (e ) 1 m e a l seating plane a 1 w m b 1 e d a 2 z 28 1 15 14 b e pin 1 index 0 5 10 mm scale note 1. plastic or metal protrusions of 0.25 mm maximum per side are not included. handbook, full pagewidth dip28: plastic dual in-line package; 28 leads (600 mil) sot117-1
1996 oct 25 23 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 references outline version european projection issue date iec jedec eiaj note 1. plastic or metal protrusions of 0.01 inches maximum per side are not included. sot261-2 19 25 28 1 4 511 18 12 26 detail x (a ) 3 b p w m a 1 a a 4 l p b 1 b k 1 k x y e e b d h e h v m b d z d a z e e v m a 0 5 10 mm scale 92-11-17 95-02-25 pin 1 index plcc28: plastic leaded chip carrier; 28 leads sot261-2 unit a a min. max. max. max. max. 1 a 4 b p e (1) (1) (1) eh e z y w v b mm 4.57 4.19 0.51 3.05 0.53 0.33 0.021 0.013 1.27 0.51 2.16 45 o 0.18 0.10 0.18 dimensions (millimetre dimensions are derived from the original inch dimensions) d (1) 11.58 11.43 h d 12.57 12.32 e z 2.16 d b 1 0.81 0.66 k 1.22 1.07 k 1 0.180 0.165 0.020 0.12 a 3 0.25 0.01 0.05 0.020 0.085 0.007 0.004 0.007 l p 1.44 1.02 0.057 0.040 0.456 0.450 11.58 11.43 0.456 0.450 0.495 0.485 12.57 12.32 0.495 0.485 e e e d 10.92 9.91 0.430 0.390 10.92 9.91 0.430 0.390 0.085 0.032 0.026 0.048 0.042 e e inches e e
1996 oct 25 24 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 soldering introduction there is no soldering method that is ideal for all ic packages. wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. however, wave soldering is not always suitable for surface mounted ics, or for printed-circuits with high population densities. in these situations reflow soldering is often used. this text gives a very brief insight to a complex technology. a more in-depth account of soldering ics can be found in our ic package databook (order code 9398 652 90011). dip s oldering by dipping or by wave the maximum permissible temperature of the solder is 260 c; solder at this temperature must not be in contact with the joint for more than 5 seconds. the total contact time of successive solder waves must not exceed 5 seconds. the device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the specified maximum storage temperature (t stg max ). if the printed-circuit board has been pre-heated, forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit. r epairing soldered joints apply a low voltage soldering iron (less than 24 v) to the lead(s) of the package, below the seating plane or not more than 2 mm above it. if the temperature of the soldering iron bit is less than 300 c it may remain in contact for up to 10 seconds. if the bit temperature is between 300 and 400 c, contact may be up to 5 seconds. plcc r eflow soldering reflow soldering techniques are suitable for all plcc packages. the choice of heating method may be influenced by larger plcc packages (44 leads, or more). if infrared or vapour phase heating is used and the large packages are not absolutely dry (less than 0.1% moisture content by weight), vaporization of the small amount of moisture in them can cause cracking of the plastic body. for more information, refer to the drypack chapter in our quality reference handbook (order code 9397 750 00192). reflow soldering requires solder paste (a suspension of fine solder particles, flux and binding agent) to be applied to the printed-circuit board by screen printing, stencilling or pressure-syringe dispensing before package placement. several techniques exist for reflowing; for example, thermal conduction by heated belt. dwell times vary between 50 and 300 seconds depending on heating method. typical reflow temperatures range from 215 to 250 c. preheating is necessary to dry the paste and evaporate the binding agent. preheating duration: 45 minutes at 45 c. w ave soldering wave soldering techniques can be used for all plcc packages if the following conditions are observed: a double-wave (a turbulent wave with high upward pressure followed by a smooth laminar wave) soldering technique should be used. the longitudinal axis of the package footprint must be parallel to the solder flow. the package footprint must incorporate solder thieves at the downstream corners. during placement and before soldering, the package must be fixed with a droplet of adhesive. the adhesive can be applied by screen printing, pin transfer or syringe dispensing. the package can be soldered after the adhesive is cured. maximum permissible solder temperature is 260 c, and maximum duration of package immersion in solder is 10 seconds, if cooled to less than 150 c within 6 seconds. typical dwell time is 4 seconds at 250 c. a mildly-activated flux will eliminate the need for removal of corrosive residues in most applications. r epairing soldered joints fix the component by first soldering two diagonally- opposite end leads. use only a low voltage soldering iron (less than 24 v) applied to the flat part of the lead. contact time must be limited to 10 seconds at up to 300 c. when using a dedicated tool, all other leads can be soldered in one operation within 2 to 5 seconds between 270 and 320 c.
1996 oct 25 25 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 definitions life support applications these products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify philips for any damages resulting from such improper use or sale. purchase of philips i 2 c components data sheet status objective speci?cation this data sheet contains target or goal speci?cations for product development. preliminary speci?cation this data sheet contains preliminary data; supplementary data may be published later. product speci?cation this data sheet contains ?nal product speci?cations. limiting values limiting values given are in accordance with the absolute maximum rating system (iec 134). stress above one or more of the limiting values may cause permanent damage to the device. these are stress ratings only and operation of the device at these or at any other conditions above those given in the characteristics sections of the speci?cation is not implied. exposure to limiting values for extended periods may affect device reliability. application information where application information is given, it is advisory and does not form part of the speci?cation. purchase of philips i 2 c components conveys a license under the philips i 2 c patent to use the components in the i 2 c system provided the system conforms to the i 2 c specification defined by philips. this specification can be ordered using the code 9398 393 40011.
1996 oct 25 26 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 notes
1996 oct 25 27 philips semiconductors product speci?cation video processor with automatic cut-off and white level control tda4680 notes
internet: http://www.semiconductors.philips.com philips semiconductors C a worldwide company ? philips electronics n.v. 1996 sca52 all rights are reserved. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. no liability will be accepted by the publisher for any consequence of its use. publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. netherlands: postbus 90050, 5600 pb eindhoven, bldg. vb, tel. +31 40 27 82785, fax. +31 40 27 88399 new zealand: 2 wagener place, c.p.o. box 1041, auckland, tel. +64 9 849 4160, fax. +64 9 849 7811 norway: box 1, manglerud 0612, oslo, tel. +47 22 74 8000, fax. +47 22 74 8341 philippines: philips semiconductors philippines inc., 106 valero st. salcedo village, p.o. box 2108 mcc, makati, metro manila, tel. +63 2 816 6380, fax. +63 2 817 3474 poland: ul. lukiska 10, pl 04-123 warszawa, tel. +48 22 612 2831, fax. +48 22 612 2327 portugal: see spain romania: see italy russia: philips russia, ul. usatcheva 35a, 119048 moscow, tel. +7 095 247 9145, fax. +7 095 247 9144 singapore: lorong 1, toa payoh, singapore 1231, tel. +65 350 2538, fax. +65 251 6500 slovakia: see austria slovenia: see italy south africa: s.a. philips pty ltd., 195-215 main road martindale, 2092 johannesburg, p.o. box 7430 johannesburg 2000, tel. +27 11 470 5911, fax. +27 11 470 5494 south america: rua do rocio 220, 5th floor, suite 51, 04552-903 s?o paulo, s?o paulo - sp, brazil, tel. +55 11 821 2333, fax. +55 11 829 1849 spain: balmes 22, 08007 barcelona, tel. +34 3 301 6312, fax. +34 3 301 4107 sweden: kottbygatan 7, akalla, s-16485 stockholm, tel. +46 8 632 2000, fax. +46 8 632 2745 switzerland: allmendstrasse 140, ch-8027 zrich, tel. +41 1 488 2686, fax. +41 1 481 7730 taiwan: philips taiwan ltd., 23-30f, 66, chung hsiao west road, sec. 1, p.o. box 22978, taipei 100, tel. +886 2 382 4443, fax. +886 2 382 4444 thailand: philips electronics (thailand) ltd., 209/2 sanpavuth-bangna road prakanong, bangkok 10260, tel. +66 2 745 4090, fax. +66 2 398 0793 turkey: talatpasa cad. no. 5, 80640 gltepe/istanbul, tel. +90 212 279 2770, fax. +90 212 282 6707 ukraine : philips ukraine, 4 patrice lumumba str., building b, floor 7, 252042 kiev, tel. +380 44 264 2776, fax. +380 44 268 0461 united kingdom: philips semiconductors ltd., 276 bath road, hayes, middlesex ub3 5bx, tel. +44 181 730 5000, fax. +44 181 754 8421 united states: 811 east arques avenue, sunnyvale, ca 94088-3409, tel. +1 800 234 7381 uruguay: see south america vietnam: see singapore yugoslavia: philips, trg n. pasica 5/v, 11000 beograd, tel. +381 11 625 344, fax.+381 11 635 777 for all other countries apply to: philips semiconductors, marketing & sales communications, building be-p, p.o. box 218, 5600 md eindhoven, the netherlands, fax. +31 40 27 24825 argentina: see south america australia: 34 waterloo road, north ryde, nsw 2113, tel. +61 2 9805 4455, fax. +61 2 9805 4466 austria: computerstr. 6, a-1101 wien, p.o. box 213, tel. +43 1 60 101, fax. +43 1 60 101 1210 belarus: hotel minsk business center, bld. 3, r. 1211, volodarski str. 6, 220050 minsk, tel. +375 172 200 733, fax. +375 172 200 773 belgium: see the netherlands brazil: see south america bulgaria: philips bulgaria ltd., energoproject, 15th floor, 51 james bourchier blvd., 1407 sofia, tel. +359 2 689 211, fax. +359 2 689 102 canada: philips semiconductors/components, tel. +1 800 234 7381 china/hong kong: 501 hong kong industrial technology centre, 72 tat chee avenue, kowloon tong, hong kong, tel. +852 2319 7888, fax. +852 2319 7700 colombia: see south america czech republic: see austria denmark: prags boulevard 80, pb 1919, dk-2300 copenhagen s, tel. +45 32 88 2636, fax. +45 31 57 1949 finland: sinikalliontie 3, fin-02630 espoo, tel. +358 9 615800, fax. +358 9 61580/xxx france: 4 rue du port-aux-vins, bp317, 92156 suresnes cedex, tel. +33 1 40 99 6161, fax. +33 1 40 99 6427 germany: hammerbrookstra?e 69, d-20097 hamburg, tel. +49 40 23 53 60, fax. +49 40 23 536 300 greece: no. 15, 25th march street, gr 17778 tavros/athens, tel. +30 1 4894 339/239, fax. +30 1 4814 240 hungary: see austria india: philips india ltd, shivsagar estate, a block, dr. annie besant rd. worli, mumbai 400 018, tel. +91 22 4938 541, fax. +91 22 4938 722 indonesia: see singapore ireland: newstead, clonskeagh, dublin 14, tel. +353 1 7640 000, fax. +353 1 7640 200 israel: rapac electronics, 7 kehilat saloniki st, tel aviv 61180, tel. +972 3 645 0444, fax. +972 3 649 1007 italy: philips semiconductors, piazza iv novembre 3, 20124 milano, tel. +39 2 6752 2531, fax. +39 2 6752 2557 japan: philips bldg 13-37, kohnan 2-chome, minato-ku, tokyo 108, tel. +81 3 3740 5130, fax. +81 3 3740 5077 korea: philips house, 260-199 itaewon-dong, yongsan-ku, seoul, tel. +82 2 709 1412, fax. +82 2 709 1415 malaysia: no. 76 jalan universiti, 46200 petaling jaya, selangor, tel. +60 3 750 5214, fax. +60 3 757 4880 mexico: 5900 gateway east, suite 200, el paso, texas 79905, tel. +9-5 800 234 7381 middle east: see italy printed in the netherlands 537021/1200/02/pp28 date of release: 1996 oct 25 document order number: 9397 750 00946

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