1/4 Structure ： Silicon Monolithic Integrated Circuit Product name ： 6ch Video driver ( for DVD ) Type ： BH7856FS Outer dimensions ： Block diagram ： Feature ： Fig.1 SSOP-A32（Plastic Package） Fig.2 1) Built in LPF with characteristics suited to DVD players and recorders (Y, C, Y/C MIX : 6.75MHz, Py/G ,Pb/B, and Pr/R : 13.5MHz) 2) Built in 6ch video driver (Y, C, Y/C MIX, Py/G, Pb/B, and Pr/R ) 3) 75Ω×2 Driver (Y, C, Y/C MIX,Py/G, Pb/B and Pr/R) 4) Built in MUTE switch ( double as power save function ) 5) Built in S1/S2 circuit 6) Built in selection switch for SCART connector (CVBS,R or C,Y output) ○Absolute Maximum Ratings(Ta=25℃) Parameter Supply Voltage Power Dissipation Symbol VccMAX Limits 6.0 Unit V Pd 1.35 *1 W Terminal applied voltage Vin -0.3～Vcc+0.3 V Storage Temperature Ｔstg -55 ～ +125 ℃ Range *1 When mounted on a 100mm×100mm×1.6mmt PCB board, the rated values are reduced at 13.5mW/℃ when temperature exceeds 25℃. (Glass epoxy substrate) ○Operating Range Parameter Symbol Limits Unit Supply Voltage Vcc +4.5 ～ +5.5 V Operation Temperature Ｔopr -40 ～ +85 ℃ Range * This product is not designed for protection against radioactive rays. REV. A 2/4 ○Electrical characteristics （Ta= 25℃, Vcc=5.0V Unless otherwise specified） Parameter Symbol Specification Min Typ Max Unit Testing condition No signal 6ch Active MODE No signal Mute1 ON (C,Y,CV system) No signal Mute2 ON (Py/G, Pb/B, Pr/R system) No signal Mute1 & Mute2 ON f=10 kHz, THD = 1.0% C, Py/G(BIAS), Pｂ/B,Pｒ/R f=10 kHz, THD = 1.0% CV,Y,MIX, Py/G(CLAMP) Circuit current 1 ICC1 50 75 100 mA Circuit current 2 ICC2 25 45 65 mA Circuit current 3 ICC3 15 35 55 mA Circuit current 4 ICC4 1 2.5 5 mA Output dynamic range 1 VOM1 2.4 3.0 － Vpp Output dynamic range 2 VOM2 2.4 2.8 － Vpp GVC 5.6 6 6.4 dB CIN：f=3.58MHz, 1Vpp C-Pr/R(SEL3="H") GVCPr 5.6 6 6.4 dB CIN：f=3.58MHz, 1Vpp MIX(C) GVMIXC 5.6 6 6.4 dB CIN：f=3.58MHz, 1Vpp MIX(Y) GVMIXY 5.6 6 6.4 dB YIN：f=1MHz, 1Vpp CV GVCVIN 5.6 6 6.4 dB CVIN：f=1MHz, 1Vpp Y-CV(SEL3="H") GVYCV 5.6 6 6.4 dB YIN：f=1MHz, 1Vpp Y GVY 5.6 6 6.4 dB YIN：f=1MHz, 1Vpp Py/G (CLAMP/BIAS) GVPY 5.6 6 6.4 dB Py/G IN：f=1MHz, 1Vpp Pb/B GVPb 5.6 6 6.4 dB Pb/B IN：f=1MHz, 1Vpp Pr/R GVPr 5.6 6 6.4 dB Pr/R IN：f=1MHz, 1Vpp Frequency Characteristics 1 (CIN、CVIN、YIN) f11 -1.5 -0.5 0.5 dB fin=100k/6.75MHz, 1Vpp f12 － -33 -25 dB fin=100k/27MHz, 1Vpp f21 -1.5 -0.5 0.5 dB f22 － -30 -23 dB CT － -60 -50 dB fin=4.43MHz, 1Vpp Voltage gain C Frequency Characteristics 2 (Py/G IN、Pb/B IN、Pr/R IN) Crosstalk ＭＴ － -60 -50 dB CIN : f = 4.43MHz, 1Vpp YIN,CVIN,Py/GIN,Pb/BIN,Pr/RIN : f=1MHz, 1Vpp L VSDCL － 0.1 0.5 V RL=10kΩ+100kΩ S1=L,S2=L M VSDCM 1.9 2.1 2.3 V RL=10kΩ+100kΩ S1=L,S2=H S1=H,S2=H H VSDCH 4.3 4.6 － V RL=10kΩ+100kΩ S1=H,S2=L VTHH 2.0 － VCC V MUTE OFF VTHL GND － 0.7 V MUTE ON MUTE attenuation S-DCOUT Voltage MUTE Control Voltage LPF13.5MHz fin=100k/13.5MHz, 1Vpp LPF13.5MHz fin=100k/54MHz, 1Vpp REV. A 3/4 Parameter Symbol SEL1 （CV /MIX） Control Voltage SEL2 (BIAS/CLAMP) Control Voltage Specification Typ Max Min Unit Testing condition CV MODE CVIN→CV_Y OUT MIX MODE CIN,YIN→CV_Y OUT BIAS MODE Py/G IN→Py/G OUT CLAMP MODE Py/G IN→Py/G OUT SCART OUT MODE YIN→CV_Y OUT CIN→Pr/R_C OUT 6ch OUT MODE CVIN→CV_Y OUT Pr/R IN→Pr/R_C OUT VTHH 2.0 － VCC V VTHL GND － 0.7 V VTHH 2.0 － VCC V VTHL GND － 0.7 V VTHH 2.0 － VCC V VTHL GND － 0.7 V VTHH 2.0 － VCC V High VTHL GND － 0.7 V Low SEL3 (SCART OUT/6ch OUT) Control Voltage S1/S2 Control Voltage Control terminal Input current ＩlH － － 155 μA ＶH= 4.5V ＩlL － － 20 μA VL = 0.4V ○Outer dimensions BH7856FS Lot. No. Fig.1 Outer dimensions SSOP-A32( Unit ： mm ) ○Operation mode table Table.1 Operation mode table Operation Mode MUTE1 MUTE2 SEL1 SEL3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 L L L L L L L L H H H H H H H H L L L L H H H H L L L L H H H H L L H H L L H H L L H H L L H H L H L H L H L H L H L H L H L H COUT × × × × × × × × CIN CIN CIN CIN CIN CIN CIN CIN CV_Y OUT × × × × × × × × YC MIX YIN CV IN YIN YC MIX YIN CV IN YIN Output Signal YOUT Py/G OUT Pb/B OUT Pr/R_C OUT × × × × × × × × × × × × × × × × × Py/G IN Pb/B IN Pr/R IN × × × × × Py/G IN Pb/B IN Pr/R IN × × × × YIN × × × YIN × × CIN YIN × × × YIN × × CIN YIN Py/G IN Pb/B IN Pr/R IN YIN × × CIN YIN Py/G IN Pb/B IN Pr/R IN YIN × × CIN * When SEL3＝"H", Py,Pb,Pr block power on without MUTE2="H", but Py and Pb block are no signal output. * "×" express no output. And other output signal from input pin written in table. REV. A 4/4 ○Block diagram Vcc1 ○Pin number/Pin name 6.75 MHz LPF 1 + S1 2 S2 3 CIN 4 MUT E1 (MUT E OFF/ON) 5 CVIN SEL1(CV/MIX) Y IN B IA S 6 8 BIAS 11 Clamp Clamp 31 S-DCOUT 75 Ω 30 CV_Y OUT 29 CV_Y OUT SAG H 28 SEL3 （SCARTOUT / 6chOUT ) 27 Y OUT SCART/6ch SEL3 6.75 MHz LPF 6dB 75Ω T EST 12 6dB 75Ω H Y OUT SAG 25 GND 24 Py/GOUT 23 Py/GOUT SAG 22 GND 21 Pb/B OUT 20 Pb/B OUT SAG 19 GND 18 Pr/R_COUT 17 Pr/R_COUT SAG SEL3 L： ON H： OFF 6dB L 75Ω BIAS 26 SEL3 13.5 MHz LPF Clamp 13 L ：ON H ：OFF BIAS BIAS Vcc2 S-DCOUT S1/S2 L 6dB MUTE1(C,CV, Y Block) 9 Py/GIN Pr/RIN COUT 7 10 MUT E2 (MUT E OFF/ON) 32 H SEL2( BIAS/ CLAMP) Pb/B IN L 6.75 MHz LPF 75 Ω 13.5 MHz LPF 6dB SEL3 MUTE2(Py, Pb, Pr BLOCK) 14 15 BIAS H 13.5 MHz LPF 6dB L 75Ω 16 *12pin is for the test . Please shor t the test pin to GND. Fig.2 Block diagram Table.2 Control pin function Pin name SEL1 SEL2 SEL3 MUTE1 MUTE2 State H L H L H L H L H L Function CVIN→CV_Y OUTPUT MODE MIX(CIN,YIN)→CV_Y OUTPUT MODE BIAS MODE (Py/G INPUT) CLAMP MODE (Py/G INPUT) SCART OUTPUT MODE 6ch OUTPUT MODE C, CV, Y BLOCK MUTE OFF C, CV, Y BLOCK MUTE Py/G, Pb/B, Pr/R BLOCK MUTE OFF Py/G, Pb/B, Pr/R BLOCK MUTE No. Pin name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Vcc1 28 29 30 31 32 S1 S2 CIN MUTE1(OFF/ON) CV IN SEL1(CV/MIX) Y IN BIAS SEL2(BIAS/CLAMP) Py/G IN TEST Pb/B IN MUTE2(OFF/ON) Pr/R IN Vcc2 Pr/R_C OUT SAG Pr/R_C OUT GND Pb/B OUT SAG Pb/B OUT GND Py/G OUT SAG Py/G OUT GND YOUT SAG YOUT SEL3 (SCART OUT/6ch OUT) CV_Y OUT SAG CV_Y OUT S-DCOUT COUT ○ Cautions on use (1) Absolute maximum ratings This IC may be damaged if the absolute maximum ratings for the applied voltage, temperature range, or other parameters are exceeded. Therefore, avoid using a voltage or temperature that exceeds the absolute maximum ratings. If it is possible that absolute maximum ratings will be exceeded, use fuses or other physical safety measures and determine ways to avoid exceeding the IC's absolute maximum ratings. (2) GND voltage Make setting of the potential of the GND terminal so that it will be maintained at the minimum in any operating state. Furthermore, check to be sure no terminals are at a potential lower than the GND voltage including an actual electric transient. (3) Thermal design Ensure sufficient margins to the thermal design by taking in to account the allowable power dissipation during actual use modes. (4) Shorting between pins and mounting errors When mounting the IC chip on a board, be very careful to set the chip's orientation and position precisely. When the power is turned on, the IC may be damaged if it is not mounted correctly. The IC may also be damaged if a short occurs (due to a foreign object, etc.) between two pins, between a pin and the power supply, or between a pin and the GND. (5) Operation in strong magnetic fields Note with caution that operation faults may occur when this IC operates in a strong magnetic field. (6) Place the power supply bypass capacitor as close as possible to the Vcc pin (PIN1, PIN16). (7) When not using a sag correction circuit Connect the sag correction pin and output pin as closely as possible. There is a danger of high frequency oscillation. Also make the distance from the output pin (OUT pin, SAG pin) to the 75Ω resistance as short as possible. (8) When using a sag correction circuit Make the length of the output pin (OUT pin, SAG pin) and capacitor as short as possible. There is a danger of high frequency oscillation. Also make the distance from the output pin (OUT pin, SAG pin) to the 75Ω resistance as short as possible. If these cautions is not observed in board layout, connect a capacitor (0.01μF~0.1μF) as short as possibl REV. A Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. 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