1/4 rev. a structure : silicon monolithic integrated circuit product name : wide bandwidth audio-video sw for tv type : BH7645KS2 outer dimensions : fig.1 sqfp-t52 block diagram : fig.2 features : 1) video inputs selector : 2-inputs component, 2-in puts y/c, and 2-inputs composite 2) component inputs : correspond to d5 standard 3) built-in lpf selector(6.75mhz/13.5mhz/30mhz/through) 4) built-in video mute function 5) audio inputs selector : 6-inputs (lch, rch) 6) built-in power-on mute function 7 ) i 2 c-bus control 8) optional slave address modifications(90h/92h) 9) i 2 c-bus is compatible with fast mode of version2.0, but not compa tible with hs mode 10) built-in detector 3ch(s_sw1/s_sw2/s_sw3) 11) built-in output port 2ch(port1_out/port2_out) absolute maximum ratings (ta=+25) parameter symbol ratings unit supply voltage1 (2pin, 29pin, 33pin, 39pin, 44pin) vcc1 7 v supply voltage2 (12pin) vcc2 8.8 v power dissipation pd 1300 *1 mw input voltage range video part, logic part v in1 0 vcc1+0.2 v audio part v in2 0 vcc2+0.2 v storage temperature range tstg -55 +125 *1 when mounting on a 70mm70mm1.6mm pcb board reduced by 13mw/ at ta = +25 or higher operating range parameter symbol range unit supply voltage1 (2pin, 29pin, 33pin, 39pin, 44pin) vcc1 +4.5 +5.5 v supply voltage2 (12pin) vcc2 +7.5 +8.5 v operating temperature range topr -40 +85 * this product is not designed for protection against radioacti ve rays. * note the power supply sequence.
2/4 rev. a electrical characteristics unle ss otherwise specified, ta= 25 , vcc1=5.0v, vcc2=8.0v item symbol limits unit conditions min. typ. max. [video part] circuit current icc v 55 80 ma no signal voltage gain gv v -0.5 0.0 0.5 db vin=1.0vpp, f=100khz frequency characteristics1 [f=6.75mhz lpf mode] gf 1-1v -1.5 0.0 1.0 db vin=1.0vpp, f=6.75mhz/100khz gf 1-2v - -30 -20 b vin=1.0vpp, f=27mhz/100khz frequency characteristics 2 [f=13.5mhz lpf mode] gf 2-1v -1.5 0.0 1.0 db vin=1.0vpp, f=13.5mhz/100khz gf 2-2v - -30 -20 db vin=1.0vpp, f=54mhz/100khz frequency characteristics 3 [f=30mhz lpf mode] gf 3-1v -1.5 0.0 1.0 db vin=1.0vpp, f=30mhz/100khz gf 3-2v - -18 -10 db vin=1.0vpp, f=74mhz/100khz frequency characteristics 4 [f=through mode] gf 4-1v -3.0 -0.5 2.0 db vin=1.0vpp, f=54mhz/100khz maximum output level vom v 2.6 3.0 - vpp f=10khz, thd=1.0% sw crosstalk ctsw v -60 -50 db vin=1.0vpp, f=10mhz channel crosstalk ctch v -60 -50 db vin=1.0vpp, f=10mhz mute attenuation mt v -60 -50 db vin=1.0vpp, f=10mhz bias input terminal input impedance zin v 100 150 k [audio part] (at gain=0db) circuit current icc a 10 15 ma no signal voltage gain 0db gv0 a -0.5 0.0 0.5 db vin=1.0vrms, f=1khz 6db gv6 a 5.5 6.0 6.5 db vin=1.0vrms, f=1khz frequency characteristics gf a -3.0 0.0 3.0 db vin=1.0vrms, f=50khz/1khz total harmonic distortion thd a 0.03 0.1 % vin=1.0vrms, f=1khz 1 maximum output level 0db vom0 a 2.0 2.4 vrms maximum value of distortion<0.3% f=1khz 1 6db vom6 a 2.0 2.4 vrms maximum value of distortion<0.3% f=1khz 1 channel crosstalk ctch a -100 -85 db vin=2.0vrms, f=1khz 1 sw crosstalk ctsw a -100 -85 db vin=2.0vrms, f=1khz 1 mute attenuation mt a -100 -85 db vin=2.0vrms, f=1khz 1 remain noise n a 30 50 uvrms 1 psrr psrr a -45 -38 db 2 input impedance zin a 100 150 k [logic part etc.] [scl] [sda] vil vin1l 0 1.0 v low level input voltage vih vin1h 2.0 vcc1 v high level input voltage input bias current iini2c -10 0 10 ua sda output voltage vinl 0 0.4 v i l =3.0ma(sink) [adr] vil vin2l 0 1.0 v low level input voltage vih vin2h 2.0 vcc1 v high level input voltage input impedance zin adr 70 100 130 k [s_sw1] [s_sw2] [s_sw3] vil vin2l 0 1.0 v low level input voltage vih vin2h 2.0 vcc1 v high level input voltage input impedance zin ssw 100 150 k pull up resistance [port1_out] [port2_out] port output voltage v pl 0.5 v i l =2.5ma leak current i ph 5.0 ua vcc2=8.0v 1 400hzhpf + 30khzlpf on 2 vin=0.3vpp, f=100hz at vcc, 30khzlpf on
3/4 rev. a physical dimensions block diagram pin number and pin name pin number pin name pin number pin name pin number pin name pin number pin name 1 y1in1 14 l1in 27 rout 40 port1 out 2 vcc5v video in1 15 r1in 28 lout 41 cyin1 3 cvbs1 16 l2in 29 vcc5v au 42 address 4 vref video 17 r2in 30 dgnd 43 cyin2 5 y1in2 18 l3in 31 scl 44 vcc5v video in2 6 gnd 19 r3in 32 sda 45 pbin1 7 cvbs2 20 l4in 33 dvcc5v 46 test1 8 gnd video in 21 r4in 34 pr/cout1 47 pbin2 9 c1in1 22 l5in 35 gnd rgbout 48 s sw3 10 vref au 23 r5in 36 pbout1 49 s sw2 11 c1in2 24 l6in 37 gnd 50 prin1 12 vcc8v au 25 r6in 38 cy/y/cvbsout1 51 s sw1 13 port2 out 26 gnd au 39 vcc5v rgbout 52 prin2 ?hd av BH7645KS2 L 1) ??? ` ? 2 ? y y/c 2 ? BH7645KS2 lot no. fig.1 sqfp-t52 ( unit:mm ) fig.2 block diagram 40 41 42 43 44 45 46 47 48 49 50 1 2 3 4 5 6 7 8 9 10 11 16 17 18 19 20 21 22 23 24 25 26 29 30 31 32 33 34 35 36 3738 39 y1in1 r1in l2in r2in l3in r3in l4in r4in l5in r5in l6in r6in vcc5v rgbout cy/y/ cvbsout1 pbout1 gnd rgbout pr/cout1 dvcc5v sda scl dgnd clamp 0db 0db 0db clamp bias bias s sw bias bias clamp clamp clamp clamp bias bias mute mute mute 0/6db 0/6db p-on mute p-on mute mute mute 6in-1out 2728 lout rout 51 52 12 13 14 15 l1in gnd au gnd port1 out lpf2 6.75m/13.5m/ 30m/through lpf1 6.75m/13.5m/ 30m/through lpf3 6.75m/13.5m/ 30m/through cy_s w pb_s w pr_sw y_sw c_sw audio_sw gain_sel vcc5v video in1 cvbs1 vref video y1in2 gnd cvbs2 gnd video in c1in1 vref au c1in2 vcc8v au port2 out vcc5v au cyin1 address cyin2 vcc5v video in2 pbin1 test1 pbin2 s sw3 s sw2 prin1 s sw1 prin2 i2c logic
4/4 rev. a cautions for use (1) absolute maximum ratings if the absolute maximum ratings for applied voltage and/or oper ation temperature are exceeded, lsi damage may result. therefore, do not apply voltage or use in a temperature that exceeds these absolute maximum ratings. if it is possible that absolute maximum ratings will be exceede d, use a physical safety device such as a fuse and make sure that no condition s that might exceed the absolute maximum ratings will be applied to the lsi ic. (2) power supply line design pcb pattern to provide lo w impedance for the wiring betw een the power supply and the gnd lines. in this regard, for the digital block power supply and the anal og block power supply, even though these power supplies has the same level of potential, separate the power supply patt ern for the digital block from that for the analog block, thus suppressing the diffraction o f digital noises to the analo g block power supply resulti ng from impedance common to the wiring patterns. for the gnd line, give consideration to de sign the patterns in a similar manner. furthermore, for all power suppl y terminals to ics, mount a cap acitor between the power su pply and the gnd terminal. at the same time, in order to use an electrolytic capacitor, th oroughly check to be sure the characteristics of the capacitor to be used present no problem including the occurrenc e of capacity dropout at a low temperature, thus determining the constant. (3) gnd potential regardless of the operation mode, the voltage of the gnd pin sh ould be at least the minimum voltage. actually check whether or not the voltage at each pin, includin g transient phenomena, is less than the gnd pin voltage. (4) thermal design the thermal design should be done using an ample margin that ta kes into consideration the allowable dissipation under actual use conditions. (5) shorts between pins and mounting errors when mounting lsi ics onto the circuit board, make sure each ls i's orientation and position is correct. the ics may become damaged if they are not mounted correctly wh en the power is turned on. similarly, damage may also result if a short occurs, such as wh en a foreign object is positioned between pins in an ic, or between a pin and a power supply or gnd connection. (6) operation in strong electromagnetic field when used within a strong electromagnetic field, evaluate caref ully to avoid the risk of operation faults. (7) power supply sequence [power-up sequence] supply voltage1 (vcc1 : 2pin, 29pin, 33pin, 39pin, 44pin) must be powered up before or at the same time as the supply voltage2 (vcc2 : 12pin). [power-down sequence] supply voltage2 (vcc2 : 12pin) must be powered up before or at the same time as the supply voltage1(vcc1 : 2pin, 29pin, 33pin, 39pin, 44pin).
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