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ordering number : enn7737 32204tn (ot) no. 7737-1/26 overview the LA8580W is an i/o switching audio signal- processing ic for low-power cordless telephone base sets. it also supports personal fax machines for the japanese domestic market. it integrates an extensive set of functions, including a compander, a crosspoint switch for i/o switching, an electronic volume control, and level switching, alc, vox, and filter circuits. applications low-power cordless telephone base sets and japanese market home fax machines. functions ? crosspoint switch (equivalent to 10 9) and electronic volume control (vol) ? audio level switching (att) for the telephone circuit system, the handset system, both dsp systems, the doorphone system, and the microphone system ? dedicated ring-tone input pin (osc-in), ring-tone level switching (osc-att), ring-tone muting (osc-sw) ? alc amplifier, audio level detection (vox), operational amplifiers for the dsp i/o filters. ? compressor, limiter (idc), compressor system muting, splatter filter. ? expander, receive system input filter amplifier, and expander system muting ? receive system data waveform shaping (with threshold follower on/off function) ? serial interface (8-bit serial data input) features ? includes a 10 input system/9 output system crosspoint switch that supports mixing. systems that provide flexible and complex switching of signal paths can be implemented easily. ? built-in electronic volume control (about 2 db per step over 15 steps) and extensive set of level switching circuits allow this ic to easily switch signals with a wide range of levels. ? a compander circuit, which provides noise reduction during communication, is built in. this circuit can also be used for noise suppression and improved audio quality in wireless communication systems. ? built-in splatter filter (fifth order butterworth filter with settable center frequency) for reduced parts counts. package dimensions unit: mm 3190a-sqfp64 (0.5 mm lead pitch) 10.0 10.0 12.0 12.0 0.15 0.5 (1.5) 0.1 1.7max 0.18 (0.5) (1.25) 116 17 32 33 48 49 64 sanyo: sqfp64 [LA8580W] LA8580W sanyo electric co.,ltd. semiconductor company tokyo office tokyo bldg., 1-10, 1 chome, ueno, taito-ku, tokyo, 110-8534 japan compander + i/o switching telephone audio signal-processing ic monolithic linear ic any and all sanyo products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircrafts control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. consult with your sanyo representative nearest you before using any sanyo products described or contained herein in such applications. sanyo assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all sanyo products described or contained herein.
no. 7737- 2 /26 LA8580W parameter symbol conditions ratings unit maximum supply voltage v cc max 7.0 v allowable power dissipation pdmax ta 70 c 150 mw operating temperature topr C20 to +70 c storage temperature tstg C40 to +150 c specifications maximum ratings at ta = 25 c parameter symbol conditions ratings unit recommended supply voltage v cc 5 v allowable operating supply voltage range v cc op 4.5 to 5.5 v operating conditions at ta = 25 c parameter symbol conditions ratings unit min typ max quiescent current icco no signal (default mode) 7.5 14.5 21 ma [cmp block] vinrefc = C40 dbv = 0 db, cmp-pre amp gain = 20 db, rl = 10 k output level vcmp vin = vinrefc = 0 db C15.4 C13.4 C11.4 dbv gain error gec vin = C40 db C2.5 C0.4 +1 db total harmonic distortion thdc vin = 0 dbv 0.4 1 % output noise voltage ncmp rg = 620 , f = 20 to 20 khz 1.5 4 mvrms preamplifier maximum voltage gain gmxc 30 db limiting voltage vlt 0.83 1.04 1.3 vp-p tx data output level vtxd vin = C10 dbv (input: pin 8) C15 C13.5 C12 dbv maximum output level vmxc thd = 1.5% C5.5 C1.6 dbv lpf attenuation lpf fin = 5 khz, fifth-order butterworth filter (fc = 3.45 khz) 9.5 13.5 20 db muting attenuation mtc vin = +30 db, 1 khz-bpf C78 C65 dbv crosstalk ctc exp-vin = C20 dbv, 1 khz-bpf C57 C50 dbv [exp block] vinrefe = C20 dbv = 0 db, rl = 10 k output level cexp vin = vinrefe = 0 db C20.3 C17.8 C15.3 dbv gain error gee vin = C30 db C1.5 +0.3 +2 db total harmonic distortion thde vin = 0 dbv 0.3 1 % output noise voltage nexp rg = 620 , f = 20 to 20 khz 17 50 vrms maximum output level 1 vmxe1 thd = 1.5% C6 C2 dbv maximum output level 2 vmxe2 thd = 1.5%, rl 3 15 k C4 0 dbv muting attenuation mte vin = +10 db, 1 khz bpf C100 C82 dbv crosstalk cte cmp-vin = C10 dbv, 1 khz bpf C96 C75 dbv [data shaper] vin = C20 dbv, rl = 47 k duty duty 43 50 57 % input sensitivity sdt C39 C34.5 C30 dbv output high level voltage vhdt 4.7 4.97 v output low level voltage vldt 0.15 0.4 v [crosspoint switch] rl = 10 k voltage gain gcsw vin = C10 dbv C1.5 +0.5 +2.5 db maximum input level vimxs thd = 1.5% C5 C1.5 dbv maximum output level 1 vmxs1 thd = 1.5% C10 C6 dbv maximum output level 2 vmxs2 thd = 1.5%, rl 3 18 k C5 C1.5 dbv output noise voltage ncsw rg = 620 , f = 20 to 20 khz 10 40 vrms crosstalk ctcsw vin = C10 dbv, 1 khz bpf C100 C80 dbv electrical characteristics at ta = 25 c, vcc = 5 v, fin = 1 khz continued on next page.
no. 7737- 3 /26 LA8580W continued from preceding page. parameter symbol conditions ratings unit min typ max [alc amplifier: input from the crosspoint switch] rl = 10 k alc saturation output level valc vin = C10 dbv 90 110 135 mvrms total harmonic distortion thda vin = C20 dbv 0.35 1 % alc range walc from the point alc turns on until the thd reaches 1% 20 26 db output noise voltage ncsw rg = 620 , f = 20 to 20 khz 70 200 vrms voltage gain galc vin = C40 dbv (alc-off mode) 9.8 11.8 13.8 db preamplifier maximum voltage gain gmxa 30 db [microphone amplifier] voltage gain gmic vin = C40 dbv 29.6 30.6 31.6 db total harmonic distortion thdm vin = C40 dbv 0.1 1 % output noise voltage nmic rg = 620 , f = 20 to 20 khz 70 200 vrms maximum voltage gain gmxm 40 db [audio level detector: vox] vox-input amp gain = 20 db, rl = 47 k input sensitivity svox C45.6 C43.6 C41.6 dbv input amplifier maximum voltage gain gmxv 30 db output high level voltage vhvx vox-off mode (small input signal) 4.7 4.97 v output low level voltage vlvx vox-on mode (large input signal) 0.15 0.4 v [electronic volume control and level switching step widths] vol step width stvol (15 steps) 1.5 2 2.5 db cdc1-att step width stcd1 (3 steps) 2.5 3.1 3.7 db cdc2-att step width stcd2 (3 steps) 2.5 3.1 3.7 db door-att step width stdr (3 steps) 2.5 3.1 3.7 db hand-att step width sthd (3 steps) 5 6 7 db line-att step width stln (3 steps) 3.3 4.1 4.9 db osc-att step width stos (3 steps) 4.1 5.1 6.1 db mic-att step width stmc (1 step) 5.1 6.1 7.1 db [serial data input system] pins 62, 63, 64 clock frequency fck 1 mhz input high level voltage vhsd 1.8 v input low level voltage vlsd 0.4 v [reset control input] pin 61 reset control voltage vrst 0.4 v reset clear sink current ist 40 a [muting control input] pins 2,3 input high level voltage vhsd 1.8 v input low level voltage vlsd 0.4 v [control output pins: pa-cnr, tr-cnt] pins 4, 5 source current isrc default mode (addresses 4b and 7f: bit d = 0) 20 a sink current isnk (addresses 4b and 7f: bit d = 1) 100 a
block diagram no. 7737- 4 /26 LA8580W p o w e r s u p p l y
test circuit no. 7737- 5 /26 LA8580W power supply unit (resistance: , capacitance: f)
sample application circuit no. 7737- 6 /26 LA8580W power supply unit (resistance: , capacitance: f) t r immer resistor
serial data format (8 bits) no. 7737- 7 /26 LA8580W ce clock d a t a a6 a5 a4 a3 a2 a1 a0 d ce clock d a t a a6 a6 t ch f max t wh t ds t dh t wl t wc t cs a5 a5 a4 a3 a2 a1 a0 d serial data timing a6 to a0: set the address of the crosspoint switch, control switch, or other item to be controlled. (hexadecimal number => binary number) d: controls the on/off state of the crosspoint switch, control switch, or other item. (after a reset, d values are cleared to 0 ) (1) when a state is set by the d value (normally d = 0: switch off, d = 1: switch on) crosspoint switch control, alc control, tr-cnt (pin 5) control, osc-sw control, mic-att control, pa-cnt (pin 4) control (2) when no states are changed by the d value (d can be either 0 or 1) reset (default) control, electronic volume control (vol) control, dr-att control, cdc1-att control, cdc2-att control, osc-att control, ln-att control, hd-att control. ? f max (maximum clock frequency): 1 mhz ? t wl (low-level clock pulse width): at least 0.5 s ? t wh (high-level clock pulse width): at least 0.5 s ? t ds (data setup time): at least 0.5 s ? t dh (data hold time): at least 0.5 s ? t cs (chip enable setup time): at least 1 s ? t ch (chip enable hold time): at least 1 s ? t wc (chip enable pulse width): at least 1 s *: when data is not being input, ce must be held high and clock must be held low. note: notes on control data input after power is first applied ? the following control data must be issued at least 200 ms after power is first applied. (1) alc-off (address 4a, d =1) *: when the supply voltage rises, alp preamplifier impulse noise will charge the capacitor connected to pin 50, and the alc circuit will operate in the no signal state. thus the charge on this capacitor must be discharged. (2) reset (address 00: d = 0) note that if the alc function is not used, the reset may be applied first.
no. 7737- 8 /26 LA8580W LA8580W crosspoint switch address table (hexadecimal values) output line hand rf1 rf2 door cdc1 cdc2 vol alc input (pin 23) (pin 24) (pin 37) (pin 38) (pin 39) (pin 16) (pin 17) (pin 25) (pin 52) line (pin 22) 0a 13 1a 22 2a 32 3a 42 hand (pin 20) 01 14 1b 23 2b 33 3b 43 rf1 (pin 43) 02 0b 1c 24 2c 34 44 rf2 (pin 42) 03 0c 15 25 2d 35 3c 45 door (pin 41) 04 0d 16 1d 2e 36 3d 46 cdc1 (pin 11) 05 0e 17 1e 26 37 3e 47 cdc2 (pin 12) 06 0f 18 1f 27 2f 3f 48 mic (pin 26) 07 10 78 20 28 30 38 49 beep (pin 6) 08 11 19 21 29 4f 40 alc (internal) 09 12 31 39 41 other addresses (hexadecimal values) address mode 00 reset control (default state: all d values are set to 0.) 4a alc control (d = 1: alc off, d = 0: alc on) 4b tr-cnt control (d = 1: pin 5 = low, d = 0: pin 5 = high) 4c osc-sw control (d = 1: switch on, d = 0: switch off) 4d mic-att control (d = 1: level = -6 db, d = 0: level = 0 db) 7f pa-cnt control (d = 1: pin 4 = low d = 0: pin 4 = high) 50 electronic volume control: lvl0 (0 db: default position) 51 electronic volume control: lvl1 (C2 db) 52 electronic volume control: lvl2 (C4 db) 53 electronic volume control: lvl3 (C6 db) 54 electronic volume control: lvl4 (C8 db) 55 electronic volume control: lvl5 (C10 db) 56 electronic volume control: lvl6 (C12 db) 57 electronic volume control: lvl7 (C14 db) 58 electronic volume control: lvl8 (C16 db) 59 electronic volume control: lvl9 (C18 db) 5a electronic volume control: lvl10 (C20 db) 5b electronic volume control: lvl11 (C22 db) 5c electronic volume control: lvl12 (C24 db) 5d electronic volume control: lvl13 (C26 db) 5e electronic volume control: lvl14 (C28 db) 5f electronic volume control: lvl15 (C30 db) 60 dr-att: lvl0 (0 db: default position) 61 dr-att: lvl1 (C3 db) 62 dr-att: lvl2 (C6 db) 63 dr-att: lvl3 (C9 db) 64 cdc1-att: lvl0 (0 db: default position) 65 cdc1-att: lvl1 (C3 db) 66 cdc1-att: lvl2 (C6 db) 67 cdc1-att: lvl3 (C9 db) 68 cdc2-att: lvl0 (0 db: default position) 69 cdc2-att: lvl1 (C3 db) 6a cdc2-att: lvl2 (C6 db) 6b cdc2-att: lvl3 (C9 db) 6c osc-att: lvl0 (0 db: default position) 6d osc-att: lvl1 (C5 db) 6e osc-att: lvl2 (C10 db) 6f osc-att: lvl3 (C15 db) 70 ln-att: lvl0 (0 db: default position) 71 ln-att: lvl1 (C4 db) 72 ln-att: lvl2 (C8 db) 73 ln-att: lvl3 (C12 db) 74 hd-att: lvl0 (0 db: default position) 75 hd-att: lvl1 (C6 db) 76 hd-att: lvl2 (C12 db) 77 hd-att: lvl3 (C18 db)
usage notes 1. splatter filter (compressor system filter) cutoff frequency the cutoff frequency is set by the resistor connected between pin 31 and ground. (see graph 1.) however, to set the value of the cutoff frequency precisely, use two resistors and design the circuit for the desired frequency. 2. expander system and codec system input filters the cutoff frequency is determined by constructing a multiple feedback type filter using external resistor and capacitor components and the built-in amplifier. the external component values can be determined easily from the values of a standardized circuit. the capacitor value that gives the target cutoff frequency is determined by using the circuit constants shown in table 1 and making the values of all the resistors used the same. however, since capacitors are not available in close value increments, it is necessary to select an approximate value for the capacitor and as the final step, adjust the frequency setting precisely with the resistor values. this means that in the final design, all the resistors may not have the same value. formula: ca = xa/2 rfc graph 1 figure 1 no. 7737- 9 /26 LA8580W splatter filter cutoff frequency vs. pin 31 resistance pin 31 resistance (k ) cutoff frequency (khz) cin r r r r c 1 c 3 c 2 vref table 1. standardized circuit constants note that there is no concept of 3 db attenuation for the bessel filter cutoff frequency. the 3 db attenuation frequency is 1.38 times fc for a second-order filter and 1.75 times fc for a third-order filter. type of low-pass filter x1 x2 x3 second-order butterworth 0.4714 2.1213 third-order butterworth 0.3333 3.0000 1.0000 second-order bessel 0.4531 1.3594 third-order bessel 0.3327 1.4298 0.7548
3. preemphasis and deemphasis the preemphasis system (first-order high-pass filter) is formed by the cmp preamplifier block input coupling capacitor, and the deemphasis system (first-order low-pass filter) is formed by the rf1 input amplifier feedback capacitor. 4. full-wave rectification smoothing capacitor the external capacitors on pins 34 and 46 are used for smoothing the compressor and expander full-wave rectifier circuits. these capacitors determine both the smoothing characteristics and the time constant for the transient characteristics. the time constant is determined by the product of this capacitance and the full-wave rectifier circuit 30 k input resistance. while there is a tendency to reduce the time constant on the expander side since this is related to noise that occurs at the end of words in speech, since reducing this value also reduces its smoothing abilities (aggravating output distortion), care is required in determining this value. 5. compressor ac suppression capacitor it is necessary to limit the ac feedback so that the dc gain becomes two and the ac gain becomes arbitrarily large in the compressor addition amplifier. pin 33 is used as the pin to which this suppression capacitor is attached. the cutoff frequency is determined by the product of the capacitance and the 50 k internal resistance. 6. internal resistors designs must take into consideration the 20% variability in the values of the internal resistors in the pins whose characteristics are determined by both the ic internal impedance and external impedances. these pins include pins 6, 7, 8, 22, 33, 34, and 46. 7. input block amplifiers (pins 6, 7, 8, 22, 41, and 42) when the input signal is to be attenuated in an input block amplifier, the signal can be attenuated by the ratio of a resistor inserted in series in the input block and the internal resistor r3. however, if a large amount of attenuation is required, the value of the series resistor must be increased. as a result, the sample-to-sample variations in the ratio with the internal resistor r3 will increase, resulting in variations in the amount of attenuation. to reduce such variations as much as possible, we recommend attenuating the signal using two resistors as shown in figure 2. figure 2 8. microphone amplifier if this amplifier is used as a noninverting amplifier, to maintain circuit balance, we recommend using the same value resistors for the bias resistor (between pins 28 and 29) and the feedback resistor (between pins 26 and 27). however, if used as an inverting amplifier, using the same value for the bias and feedback resistors may increase output noise. in this case, we recommend using 0 for the bias resistor (that is, shorting pins 28 and 29 together). 9. alc (automatic level control) circuit to improve the alc width characteristics, the signal is attenuated (by about C16.7 db) in the alc circuit front end. the alc preamplifier gain must be set with that in mind. if the alc function is not used, leave pin 53 open and short pin 50 to ground. no. 7737- 10 /26 LA8580W r 1 c 1 r 3 r 4 r 2 vref ic internal circuits
10. control output pins (pins 4 and 5) these output pins are current output pins, and have current capacities of about 30 10 a of source current and over 100 a of sink current. as a result, pull-down resistors are required if these pins are used to control voltage mode type input ports such as mos transistors. if either of these pins is unused, it must be shorted to ground to assure the source current path. 11. control input pins (pins 2, 3, 62, 63, and 64) since the internal pin circuits include both a pull-down resistor and an input current limiting resistor and furthermore the high side protection diode has been eliminated, the LA8580W can be directly connected to the controlling microcontroller even if the supply voltages differ. however, when directly connected to the microcontroller output ports, the LA8580W substrate is affected, and the signal-to-noise ratio may be degraded. thus we recommend inserting series resistors with a value of about 1 k to 2.2 k . 12. power on reset pin (pin 61) the power on reset function is enabled by adding a capacitor between pin 61 and ground and a pull-up resistor to v cc (sample values: 10 f, 100 k ). this allows all the ic mode settings to be set to their default states when power is first applied. however, to reduce the number of external components, we recommend using serial control of address 00 to perform a reset at least 200 ms after power is first applied. however, note that since no serial control operations can be performed if this pin is left at the low level, the external pull-up resistor is required even if the power on reset function is not used. although this pin can be used as an independent reset pin controlled by the microcontroller, an input current limiting resistor inserted in series is absolutely required for connection with the microcontroller. (this is the only case where the pull-up resistor is not required, since the current can be supplied by the microcontroller port.) 13. parallel control mode the compressor/expander system muting control adopts an independent parallel control technique. 14. data shaper threshold the built-in data shaper can support either a fixed threshold or threshold following operation depending on the application circuit at pin 60. (1) threshold following: insert a capacitor between pin 60 and ground (following function internal bias resistor: 50 k ). (2) fixed threshold: connect pin 60 to ground. 15. vox (voice signal level detection) circuit the vox circuit consists of an input block amplifier that sets the sensitivity, a full-wave rectifier that rectifies that signal, and comparator that compares the rectified voltage. the smoothing capacitor for the full-wave rectifier is connected to pin 56. since the ripple component increases and an ac component may be output from the vox circuit if that capacitor is too small, a capacitor of 0.47 f or greater must be used. if the vox circuit is not used, short pins 54 and 55 together, and connect pins 56 and 57 to ground. 16. esd protection diode the esd protection diodes have been removed from the control pin and data output pin circuits to allow these pins to be connected directly to the microcontroller. however if the microcontroller input and output ports are connected directly, the LA8580W substrate may be affected and that can lead to degradation of the signal-to-noise ratio. to avoid this problem, we recommend the insertion of series resistors with a value of about 1 k to 2.2 k . pins with no protection diodes: v cc 1 (pin 9), v cc 2 (pin 58), gnd1 (pin 40), and gnd2 (pin 1) pins with only low side protection diodes: pin 2, 3, 4, 5, 57, 59, 61, 62, 63, 64 pins with only high side protection diodes: all other pins no. 7737- 11 /26 LA8580W pin no. pin low or open high 2 cmp-mute compressor system audio: muted compressor system audio: normal output 3 exp-mute expander system audio: muted expander system audio: normal output
17. crosspoint switch system dynamic range the overall dynamic range of the LA8580W built-in crosspoint switch is determined by the following two factors. ? the dynamic range of the analog switch itself (ability: C1.5 dbv, limiting value: C5 dbv) ? dynamic range due to the output amplifier output current capability (when the output load resistance rl is 10 k ) 1. alc (ability: C0.5 dbv, limiting value: C5 dbv => when the alc circuit is off) 2. ln, cdc1, cdc2, op1, and op2 system outputs (ability: C3.5 dbv, limiting value: C7.5 dbv = 0.0178 mw) 3. hd, rf1, rf2, dr, and vol system outputs (ability: C6 dbv, limiting value: C10 dbv = 0.01 mw) which is to say, other than the alc amplifier, the crosspoint switch dynamic range is dominated by the output current capabilities of the output stage amplifiers. therefore, except for the alc amplifier, the dynamic range rating is due to the maximum power of the output blocks. therefore, due to the above, a normal dynamic range rating would be as follows. ? alc amplifier output dynamic range => C5.0 dbv ? line and dsp system output dynamic range => C7.5 dbv ? dynamic range of all other output systems => C10 dbv however, for lighter loads, the LA8580W can provide amplitudes of up to C5 dbv. therefore, we recommend taking the input impedance of the receiving system into consideration. we also recommend expanding the amplitude by inserting resistors between the output pins and ground to increase the current capability. 18. pin shorting the LA8580W may be damaged or destroyed if power is applied with any pairs of ic pins shorted together. always verify that there is no solder or other foreign matter on the pwb that could short ic pins together before applying power. 19. load shorting the LA8580W may be damaged or destroyed if operated with the load shorted for extended periods. do not short the LA8580W loads. 20. maximum ratings if the LA8580W is operated in the vicinity of the maximum ratings, those ratings may be exceeded by even the slightest change in the operating conditions, and the ic may be damaged or destroyed. LA8580W applications must be designed so that adequate margins are provided for supply voltage and other operating condition variations so that the maximum ratings are never exceeded. no. 7737- 12 /26 LA8580W
crosspoint switch system level diagram (for reference purposes) no. 7737- 13 /26 LA8580W normal input type hd/rf1/cdc1/cdc2/mic alc (internally connected type) beep tone input system rf2 input system doorphone input system line input system input output (set with external components) 0 db 0 db 14.8 db 16.5 db 0.5 db 1.0 db 6.3 db 9.8 db 16.7 db 28.5 db (set with external components) alc output 11.8 db input amplifier analog switch output amplifier output gain normal type rf2 output doorphone output 0.5 db 5.8 db 9.3 db compander system level diagram (for reference purposes) input output tx data input 6 db preamplifier +19.9 db set with external components. compressor variable gain gain formula g = (15.3 db + the pin 35 signal level)/2 gain formula g = 19.4 db + muting switch 0 db limiter 1.8 db input output preamplifier 0.1 db expander variable gain muting switch 0 db output amplifier 3 db addition amplifier 0 db splatter filter 3.5 db output amplifier 6 db
no. 7737- 14 /26 LA8580W pin functions pin no. pin name pin voltage remarks equivalent circuit ground 2 1 gnd2 transmit system audio mute control 2 cmp-mute 0 v cc 30 k 2 3 70 k v cc 4 5 vref 6 7 50 k 50 k vref 8 50 k 25 k receive system audio mute control 3 exp-mute control output 4 pa-cnt 1.4 (when a 33 k resistor has been inserted between this pin and ground) 2.5 2.5 control output 5 tr-cnt beep tone input 6 beep-in oscillator input 7 osc-in transmit data input 8 tx-data-in 10 13 11 12 vref 500 1 6 1 7 v r e f applied supply voltage power supply 1 9 v cc 1 2.5 2.5 codec 1 amplifier input 10 cdca1-in codec 1 amplifier output 11 cdca1-out codec 2 amplifier output 12 cdca2-out codec 2 amplifier input 13 cdca2-in cdc1 output 16 cdc1-out cdc2 output 17 cdc2-out continued on next page.
no. 7737- 15 /26 LA8580W continued from preceding page. pin no. pin name pin voltage remarks equivalent circuit op1 amplifier output 14 op1-out 2.5 2.5 2.5 2.5 2.5 2.5 1.2 0.2 15 18 44 54 14 19 43 55 vref 500 21 22 vref 500 22 10 k 60 k vref 23 24 25 vref 26 28 27 v cc 500 500 29 30 vbgp 31 v cc 3.3 k 45 k op1 amplifier input 15 op1-in op2 amplifier input 18 op2-in op2 amplifier output 19 op2-out rf1 amplifier output 43 rf1-out rf1 amplifier input 44 rf1-in vox amplifier input 54 voxa-in vox amplifier output 55 voxa-out handset amplifier output 20 hand-out handset amplifier input 21 hand-in line input 22 line-in line output 23 line-out handset output 24 hand-out electronic volume control output 25 vol-out microphone amplifier output 26 mic-out microphone amplifier minus output 27 mic-nf microphone amplifier plus output 28 mic-in internal reference voltage output 29 vref 30 vbgp splatter filter cutoff frequency setting 31 freq-set continued on next page.
no. 7737- 16 /26 LA8580W continued from preceding page. pin no. pin name pin voltage remarks equivalent circuit cmp output 32 cmp-out 2.6 32 vref compressor addition amplifier ac feedback suppression 33 cmp-nf 2.5 33 v cc vref 50 k 50 k 50 k compressor circuit full-wave rectifier circuit output block 34 cmp-rct undefined (when no input signal is present) 34 v cc 30 k cmp preamplifier output 35 cpre-out 2.5 2.5 35 36 vref 500 37 vref cmp preamplifier input 36 cpre-in rf1 output 37 rf1-out 2.5 38 vref rf2 output 38 rf2-out 2.5 39 vref doorphone output 39 door-out 41 vref 10 k 50 k ground 1 40 gnd1 2.5 doorphone input 41 door-in continued on next page.
no. 7737- 17 /26 LA8580W pin no. pin name pin voltage remarks equivalent circuit rf2 input 42 rf2-in 2.5 42 vref 50 k 50 k expander output 45 exp-out 2.5 45 vref expander circuit full-wave rectifier circuit output block 46 exp-rct undefined (when no input signal is present) 30 k 30 k 20 k vref vref 47 46 v cc v cc 500 vref 49 48 50 v cc expander input 47 exp-in 2.5 exp preamplifier output 48 epre-out 2.5 exp preamplifier input 49 epre-in alc time constant setting 50 alc-cnt 0 (when no input signal is present) continued from preceding page. continued on next page.
no. 7737- 18 /26 LA8580W pin no. pin name pin voltage remarks equivalent circuit alc preamplifier minus input 51 alc-pre-nf 2.5 alc output 52 alc-out alc input 53 alc-in 2 51 52 v cc vref 500 53 th1 th2 20 k 40 k voc circuit full-wave rectifier circuit output 56 vox-rct 0 (when no input signal is present) comparator output 57 vox-out 4.97 (when no input signal is present) power supply 2 58 v cc 2 applied supply voltage data shaper output 59 fsk-out undefined (when no input signal is present) data shaper threshold following/fixed threshold control 60 ds-th 2.5 reset 61 reset 0.78 (current insertion) v cc rct 57 56 60 k vth 60 59 vref 50 k from 48 pin 61 1 k latch 100 k v cc chip enable input 62 ce 0 data input 63 dt clock input 64 cl 62 63 64 controller 30 k 50 k continued from preceding page.
no. 7737- 19 /26 LA8580W quiescent current characteristics supply voltage, v cc v 10 f, 22 f, 33 f, output voltage cdc1 input 10 f distortion 33 f distortion 22 f distortion cdc1 input cdc1(pin 10) input cdc2 input rf2 output quiescent current, i cco ma pin 29 reference voltage vs. supply voltage characteristics supply voltage, v cc v alc output characteristics input level, v in dbv total harmonic distortion, thd % output level, v out dbv crosspoint switch output level supply voltage, v cc v crosspoint switch output distortion vs. supply voltage characteristics supply voltage, v cc v total harmonic distortion, thd % output noise voltage vrms output noise voltage supply voltage, v cc v crosspoint switch crosstalk characteristics supply voltage, v cc v crosstalk level dbv total harmonic distortion, thd % crosspoint switch output distortion vs. output level characteristics output level, v out dbv reference voltage, vref v cdc1 input rf2 output cdc2 output cdc2 output cdc2 output cdc1 output line output vol output rf2 output cdc2 output vol output vol output vol output line output line output op2 output rf2 output rf2 output mic output alc output alc output vol output
no. 7737- 20 /26 LA8580W c r o s s p o i n t s w i t c h m a x i m u m i n p u t l e v e l s u p p l y v o l t a g e , v c c v c d c 2 i n p u t , t h d = 1 . 5 % i n p u t : p i n 2 8 o u t p u t : p i n 2 6 l i n e o u t p u t a l c o u t p u t v o l o u t p u t r f 2 o u t p u t c d c 2 o u t p u t l i n e o u t p u t c d c 1 o u t p u t v o l o u t p u t r l = 1 0 k i n p u t : p i n 2 8 i n p u t : p i n 5 4 o u t p u t : p i n 5 7 p i n 5 6 c a p a c i t o r = 0 . 4 7 f c d c 1 i n p u t c d c 1 i n p u t c m p c h a r a c t e r i s t i c s t x - d a t a c h a r a c t e r i s t i c s m a x i m u m i n p u t l e v e l d b v m i c r o p h o n e a m p l i f i e r o u t p u t d i s t o r t i o n v s . i n p u t l e v e l c h a r a c t e r i s t i c s i n p u t l e v e l , v i n d b v t o t a l h a r m o n i c d i s t o r t i o n , t h d % m i c r o p h o n e a m p l i f i e r i n p u t v s . c r o s s t a l k c h a r a c t e r i s t i c s s u p p l y v o l t a g e , v c c v c r o s s t a l k l e v e l d b v e l e c t r o n i c v o l u m e c o n t r o l a t t e n u a t i o n s u p p l y v o l t a g e , v c c v a t t e n u a t i o n d b h a n d - a t t a t t e n u a t i o n s u p p l y v o l t a g e , v c c v a t t e n u a t i o n d b v o x s e n s i t i v i t y s u p p l y v o l t a g e , v c c v i n p u t l e v e l , v i n d b v c o m p r e s s o r / e x p a n d e r i / o c h a r a c t e r i s t i c s i n p u t l e v e l , v i n d b v e x p c h a r a c t e r i s t i c s o u t p u t l e v e l , v o u t d b v c o m p r e s s o r o u t p u t d i s t o r t i o n v s . p i n 3 3 c a p a c i t a n c e c h a r a c t e r i s t i c s c a p a c i t a n c e f t o t a l h a r m o n i c d i s t o r t i o n , t h d %
no. 7737- 21 /26 LA8580W compressor output level supply voltage, v cc v cmp input tx-data input cmp input tx-data input output level, v out dbv compressor output distortion supply voltage, v cc v output distortion, thd % compressor output noise voltage supply voltage, v cc v output noise voltage mvrms compressor gain error supply voltage, v cc v gain error db compressor muting attenuation level supply voltage, v cc v muting attenuation level dbv expander to compressor crosstalk characteristics supply voltage, v cc v crosstalk level dbv expander output level supply voltage, v cc v output level, v out dbv expander output distortion supply voltage, v cc v output distortion, thd %
no. 7737- 22 /26 LA8580W expander output noise voltage supply voltage, v cc v output noise voltage vrms expander gain error supply voltage, v cc v gain error dbv expander muting attenuation level supply voltage, v cc v muting attenuation level dbv compressor to expander crosstalk characteristics supply voltage, v cc v threshold fixed: v in = 30 dbv threshold fixed: v in = 20 dbv threshold follow: v in = 20 dbv when att is down by 3 db threshold follow: v in = 30 dbv crosstalk level dbv expander output distortion vs. pin 46 capacitance characteristics capacitance f total harmonic distortion, thd % data shaper duty supply voltage, v cc v duty % data shaper dead zone supply voltage, v cc v minimum input level dbv splatter filter cutoff frequency pin 31 resistance k cutoff frequency khz 2
no. 7737- 23 /26 LA8580W splatter filter characteristics frequency khz resistor: 18 k resistor: 18 k resistor: 18 k when att is down by 3 db response db splatter filter cutoff frequency vs. supply voltage characteristics supply voltage, v cc v cutoff frequency dbv splatter filter attenuation supply voltage, v cc v cmp input tx-data input attenuation db limiter level supply voltage, v cc v limiting voltage, lmt vp-p compressor output level vs. temperature characteristics temperature c output level, v out dbv compressor output distortion vs. temperature characteristics temperature c distortion % compressor output noise voltage vs. temperature characteristics temperature c output noise voltage mvrms compressor gain error vs. temperature characteristics temperature c gain error db cmp input tx-data input
no. 7737- 24 /26 LA8580W compressor muting attenuation vs. temperature characteristics temperature c muting attenuation dbv crosstalk level dbv expander to compressor crosstalk vs. temperature characteristics temperature c expander output level vs. temperature characteristics temperature c output level, v out dbv distortion % expander output distortion vs. temperature characteristics temperature c expander output noise voltage vs. temperature characteristics temperature c output noise voltage vrms gain error db expander gain error vs. temperature characteristics temperature c expander muting attenuation vs. temperature characteristics temperature c muting attenuation dbv crosstalk level dbv compressor to expander crosstalk vs. temperature characteristics temperature c
no. 7737- 25 /26 LA8580W crosspoint switch output level vs. temperature characteristics temperature c output level, v out dbv total harmonic d istortion, thd % crosspoint switch output distortion vs. temperature characteristics temperature c crosspoint switch maximum input level vs. temperature characteristics temperature c maximum input level dbv voc sensitivity vs. temperature characteristics temperature c input level, v in dbv total harmonic d istortion, thd % output level, v out mvrms alc output vs. temperature characteristics input level, v in dbv cdc1 input pin 56 capacitance = 0.47 f 90 c distortion 50 c distortion 75 c distortion 30 c distortion 20 c distortion 0 c distortion 30 c output power, 20 c output power 0 c output power, 50 c output power 75 c output power, 90 c output power cdc1 input rf1 output rf1 output rf1 output rf1 output op2 output op2 output line output line output line output op2 output op2 output cdc1 input
ps no. 7737- 26 /26 LA8580W this catalog provides information as of march, 2004. specifications and information herein are subject to change without notice. specifications of any and all sanyo products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customers products or equipment. to verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customers products or equipment. sanyo electric co., ltd. strives to supply high-quality high-reliability products. however, any and all semiconductor products fail with some probability. it is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. when designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. in the event that any or all sanyo products (including technical data, services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned in accordance with the above law. no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of sanyo electric co., ltd. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equipment, refer to the delivery specification for the sanyo product that you intend to use. information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. sanyo believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.

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