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| BD7960FM Optical disc ICs Power driver IC for CD changer BD7960FM BD7960FM is a 6-channel driver (4-channel BTL driver + 2-channel loading driver) for car CD changer. This IC integrates 1-channel operational amplifier for various purposes. The size reduction of the set is achieved by integrating loading driver and actuator driver into a single chip. !Applications CD changer !Features 1) This circuit is a 6-channel driver IC consisting of four BTL drivers and two loading drivers. 2) Two wide dynamic range loading drivers of MOS output (RON=1.0). 3) The circuit is provided with loading driver voltage setting terminals. 4) A general Opamp and Pre Opamp are built in. 5) The circuit has a mute switch. 6) The circuit has a reset terminal. 7) A thermal shutdown circuit is built in. 8) Since HSOP-M36 power package is used, the set requires a reduced space. !Absolute maximum ratings (Ta=25C) Parameter Supply voltage Power dissipation Operating temperature range Storage temperature range Symbol VCC Pd Topr Tstg Limits 15 2.2 -40~+85 -55~+150 Unit V W C C Reduced by 17.6mW for each increase in Ta of 1C over 25C, on less than 3% (percentage occupied by copper foil), 70mmx70mm, t=1.6mm, glass epoxy mounting. !Recommended operating conditions (Ta=25C) Parameter Supply voltage 1 Supply voltage 2 Symbol VCC1 VCC2 Min. 4.5 4.5 Typ. 8.0 8.0 Max. 14.0 VCC1 Unit V V 1/10 BD7960FM Optical disc ICs !Block diagram 36 35 CH6 34 33 32 31 30 29 28 27 26 25 24 23 22 CH4 21 20 CH3 19 -+ BIAS 47k -+ 47k 47k -+ (POWVCC) VCC2 (CH5/CH6) +- 10k 10k 10k 10k GND1 (POWGND) (CH1~4) LD CONT1 + - 10k 10k + - 10k + - 10k + - 47k -+ LD CONT2 Level shift Level shift 47k -+ -+ MUTE T.S.D 47k Level shift + - Level shift + - (POWGND) (CH5/CH6) GND2 CH5 47k 100 47k Control logic F R R Control logic F (POWVCC) (CH1~4) VCC1 + - + - + - CH2 CH1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 The resistance values are indicated in . !Pin descriptions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Pin name GND2 OUT5- OUT5+ IN5FWD IN5REV IN6REV IN6FWD MUTE RESET OPIN1- OP1OUT OPIN2- OP2OUT VCC1 OUT2- OUT2+ OUT1- OUT1+ Function POW GND (loading driver unit) Loading driver (CH5) output - Loading driver (CH5) output + Loading driver (CH5) FWD input Loading driver (CH5) REV input Loading driver (CH6) REV input Loading driver (CH6) FWD input BTL driver mute terminal Reset output terminal CH1 opamp negative input CH1 opamp output CH2 opamp negative input CH2 opamp output Supply voltage (BTL driver unit) BTL driver (CH2) output - BTL driver (CH2) output + BTL driver (CH1) output - BTL driver (CH1) output + Pin No. 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 Pin name OUT3+ OUT3- OUT4+ OUT4- Function BTL driver (CH3) output + BTL driver (CH3) output - BTL driver (CH4) output + BTL driver (CH4) output - LDCONT2 Loading driver (CH6) voltage setting terminal LDCONT1 Loading driver (CH5) voltage setting terminal GND1 OPOUT OPIN- VCC2 OPIN+ OPIN4- OP4OUT OPIN3- OP3OUT OUT6+ OUT6- BIAS POW GND (BTL driver unit) Opamp output Opamp negative input Supply voltage (loading driver unit) Opamp positive input CH4 opamp negative input CH4 opamp output CH3 opamp negative input CH3 opamp output Loading driver (CH6) output + Loading driver (CH6) output - BIAS terminal Symbol of + and - (output of BTL driver) means polarity to opamp output pin. For example if Opamp output voltage is H, BTL driver +output is H, -output is L + - 18 + - + - 10k 10k 10k 10k -+ -+ + - - + 10k 10k 10k 10k 2/10 BD7960FM Optical disc ICs !Input output circuit BIAS OUT1+/OUT1-/OUT2+/OUT2- OUT3+/OUT3-/OUT4+/OUT4- VCC1 VCC1 VCC1 10k 36pin 3k 10k 50k 50k 10k 10k 15~22pin IN5FWD/IN5REV IN6FWD/IN6REV VCC1 4, 5, 6, 7 pin OUT5+/OUT5- OUT6+/OUT6- VCC2 LDCONT1/LDCONT2 200k 2, 35pin 25k 3, 34pin 23, 24 pin VCC1 40k 25k GND2 OPIN1-/OPIN2-/OPIN3- OPIN4-/OPIN-/OPIN+ OP1OUT/OP2OUT/OP3OUT OP4OUT/OPOUT VCC1 VCC1 VCC1 x6 VCC1 11, 13, 26 31, 33pin 10, 12, 27 30, 32pin 29pin x6 MUTE RESET VCC1 VCC1 8pin 50k T.S.D 50k 100 9pin 3/10 BD7960FM Optical disc ICs !Electrical characteristics (unless otherwise noted, Ta=25C, VCC1, VCC2=8V, BIAS=2.5V, RL=8) Parameter Quiescent current (VCC1) Quiescent current (VCC2) BTL driver CH1 to CH4 Output offset voltage Max. output amplitude Closed circuit voltage gain Loading driver CH5 and CH6 Output offset voltage Output saturation voltage H Output saturation voltage L Voltage gain Opamp and Pre Opamp CH1 to CH4 Input offset voltage Common mode input voltage range Maximum output source current Maximum output sink current Reset Output sat voltage Output leak current Symbol Min. 15 - -40 5.4 10 -35 - - 4.0 -5 0.3 500 2 - - Typ. 25 3 Max. 35 6 +70 - 14 +35 0.70 0.25 8.0 +5 VCC-1.2 - - Unit mA mA Conditions Under no load Under no load ICC1 ICC2 VOFS VOM GVC 0 6.0 12 mV V dB VIN=BIAS0.5V Opamp : Buffer VOFSL VOLH VOLL GVLD 0 0.38 0.12 6.0 mV V V dB When brake is applied IO=500mA IO=500mA LDCONT=1V VOPOFS VOPICM ISOURCE ISINK 0 - 800 - mV V A mA VORST IREAK 0.3 0 0.5 10 V A The product is not designed for protection against radioactive rays. 4/10 BD7960FM Optical disc ICs !Measurement circuits LDCONT VCC2 OUT_LD (CH6) OUT- OUT+ LDCONT OPAMP_A (CH3) OUT IN- OPAMP_A (CH4) IN+ OUT IN- OPAMP_B OUT OUT_A (CH4) OUT- OUT+ OUT_A (CH3) OUT- OUT+ IB A 36 IQ2 29 A 28 IN- VB ILDC2 A ILDC1 25 24 A 23 35 CH6 34 33 32 31 30 27 26 22 CH4 21 10k 20 CH3 19 10k 10k 10k -+ BIAS 47k -+ 47k 47k -+ VCC2 +- LD CONT1 + - 10k 10k + - 10k + - 10k + - 47k -+ LD CONT2 Level shift Level shift 47k -+ -+ MUTE T.S.D 47k Level shift + - Level shift + - 47k 100 47k + - Control logic F CH5 Control logic R R F + - + - VCC1 CH2 CH1 1 2 OUT- 3 OUT+ 4 5 6 7 8 IMUTE 9 10 IN- 11 OUT 12 IN- 13 OUT 14 IQ1 15 OUT- 16 OUT+ 17 OUT- A IQ5F A IQ5R A IQ6R A IQ6F A 100k A (CH5) OUT_LD (CH1) OPAMP_A (CH2) OPAMP_A (CH2) OUT_A (CH1) OUT_A VCC1 LDINF LDINR LDINR LDINF VMUTE VCC1 The resistance values are indicated in . Fig.1 OUT+ + - 18 5/10 + 10k 10k 10k - 10k 10k + 10k 10k - 10k -+ -+ + - - + BD7960FM Optical disc ICs BIAS VOFB+ IN- + OUT V OUT+ SW3 OUT- 1 2 10k OPOUT V 1M 1 2 SW4 + OUT+ OUT- 3 + 10k SW2 V VO V VBOP- IOP RL VB 2 VIN 1 OUT_A OPAMP_A IN+ IN- OUT OUT- OUT+ V + SW3 OPOUT 1 2 10k VOFO V + OUT- V VOLD OUT+ SW1 + 1M 1 2 SW4 2 1 V SW5 V + 3 4 10k SW2 + V IOP VBOP- 2 1 1 2 VBOP 2 VIN 1 IO IO OUT_LD OPAMP_B Fig.2 6/10 BD7960FM Optical disc ICs !Switch table for measuring circuit diagrams (unless otherwise noted, Ta=25C, VCC1,VCC2=8V, BIAS=2.5V, VBOP=2.5V, RL=8 unless otherwise noted, the switch 1 is used.) Parameter Quiescent current Quiescent current (BTL MUTE) BTLdriver CH1 to CH4 Output offset voltage Max. output amplitude Closed circuit voltage gain (CH1 to CH4) Loading driver CH5 and CH6 Output offset voltage Symbol Switching 1 2 2 2 2 2 3 4 5 Conditions LDINF=LDINR=0V, RL=, ICC1=IQ1 LDINF=LDINR=0V, RL=, ICC2=IQ2 Measurement circuit Fig.1, 2 Fig.1, 2 ICC1 ICC2 VOFS VOM GVC 2 VIN=VB, VOFS=VO VIN=GND, VOM=VO VIN=VB+0.5V, GVC=20log (VO/0.5) Fig.1, 2 Fig.1, 2 Fig.1, 2 VOFSL LDINF=LDINR=5V, VOFSL=VOLD 2 LDINF=5V, LDINR=0V, IO=500mA, VOLH=VCC-OUT+ LDINF=0V, LDINR=5V, IO=500mA, VOLH=VCC-OUT- LDINF=5V, LDINR=0V, IO=-500mA, VOLL=OUT- LDINF=0V, LDINR=5V, IO=-500mA, VOLL=OUT+ LDCONT=1, GVLD=20log (VOLD/1V) Fig.1, 2 Output saturation voltage H VOLH Fig.1, 2 Output saturation voltage L VOLL 2 Fig.1, 2 Voltage gain (Loading) GVLD Fig.1, 2 Opamp and Pre Opamp CH1 to CH4 Input offset voltage Common mode input voltage range Max. output source current Max. output sink current Reset Output sat voltage Output leak current VOPOFS VOPICM ISOURCE ISINK 2 2 2 2 2 2 2 2 VOPOFS=VOFB+ VOPICM=Between VIN to OPOUT Fig.1, 2 Fig.1, 2 Fig.1, 2 Fig.1, 2 VORST IREAK CHIP Ta=T.S.D Fig.1, 2 Fig.1, 2 7/10 BD7960FM Optical disc ICs !Application example CH3 IN CH4 IN LOADING1 CONT BIAS LOADING2 CONT M 36 35 CH6 VCC2 34 33 32 31 30 29 28 27 26 25 24 23 22 CH4 21 20 CH3 19 10k 10k 10k 10k -+ BIAS 47k -+ 47k 47k -+ VCC2 +- LD CONT1 + - 10k 10k + - 10k + - 10k + - 47k -+ LD CONT2 Level shift Level shift 47k -+ -+ MUTE T.S.D 47k Level shift + - Level shift + - 47k 100 47k Control logic F CH5 Control logic R R F + - + - + - VCC1 CH2 CH1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 M LOADING1 FWD IN LOADING2 REV IN MUTE 10k VCC1 M M LOADING1 REV IN LOADING2 FWD IN VCC RESET OUT CH1 IN CH2 IN The resistance values are indicated in . + - 18 8/10 + - + - 10k 10k 10k 10k -+ -+ + - - + 10k 10k 10k 10k BD7960FM Optical disc ICs !Operation notes (1) BD7960FM has a built-in thermal shutdown circuit. When the chip temperature reaches 175C (Typ.), the output current from all drivers is muted. When the chip temperature returns to 150C (Typ.), the circuit of the driver unit starts up. (2) When the mute terminal (8pin) is opened or the terminal voltage is reduced to 0.5V or less, the output current of the BTL driver unit is muted. In the normal state of use, pull up the voltage to 2.0V or more. (3) When the bias terminal (36pin) voltage is reduced to 0.7V or less, the BTL driver unit is muted. In the normal state of use, set the voltage to 1.1V or more. (4) Thermal shutdown mutes all drivers. When the mute ON voltage and the bias terminal voltage are reduced, only the BTL drivers are muted. But Opamp are not muted by all condition. When the drivers are muted, the BTL driver output terminal voltage becomes the internal bias voltage (VCC1-0.7)/2V. (5) The loading drivers operate according to the following logic. INPUT FWD L L H H REV L H L H OUTPUT OUT+ Hi Z L H L OUT- Hi Z H L L Function High impedance REV mode FWD mode Brake mode The output voltage can be changed by adjusting the voltage input to the LDCONT terminal (gain of 6dB Typ.). However, even if the input voltage is increased excessively, the output voltage will not exceed the max. output voltage that depends on the supply voltage. (6) Supply the same voltage to VCC1 (14pin) and VCC2 (28pin). Insert by the pass capacitor (approx. 0.1F) between VCC pin and GND pin of IC as near as possible. (7) Connect the radiating fin with external GND. (8) Output pin is to avoid short-circuit with VCC, GND and other output pins. An integrated circuit is damaged, and smoke may come out by the case. !Electrical characteristic curves 25 OFFSET VOLTAGE : VOPOFS (mV) 20 MUTE=H 15 MUTE=L 0 OFFSET VOLTAGE : VOFS (mV) CIRCUIT CURRENT : ICC (mA) Ta=27C Circuit current BIAS= 1 VCC 2 5 Ta=27C 5 BIAS=2.5V VIN=BIAS RL= 0 10 0 0 5 10 15 -5 0 5 10 15 -5 0 5 10 15 SUPPLY VOLTAGE : VCC (V) SUPPLY VOLTAGE : VCC (V) SUPPLY VOLTAGE : VCC (V) Fig.3 Circuit current characteristic Fig.4 OP-amp offset voltage Fig.5 BTL driver offset voltage 9/10 BD7960FM Optical disc ICs 8 Ta=27C BTL driver CH1 VCC1=VCC2=8V 5 BIAS=2.5V 2.0 RL=20 RL=8 RL=4 OUTPUT VOLTAGE : VOLD (V) OUTPUT VOLTAGE : VO (V) LOSS VOLTAGE : VLOSS (V) Ta=27C 1.5 VCC1=5V, VCC2=VCC3=8V BIAS=2.5V 1.0 0.5 0 -0.5 -1.0 -1.5 (VCC standard) VIN=GND (GND standard) VIN=VCC 8 VCC2=VCC3=8V RL=20+47F 5 FWD mode RL=8+47F RL=4+47F 0 0 REV mode -5 -8 -3 -5 -8 -2 -1 0 1 2 3 -2.0 0 100 200 300 400 500 600 700 800 900 1000 LOAD CURRENT : IL (mA) 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 INPUT VOLTAGE : VIN (V) LDCONT VOLTAGE : VLD (V) Fig.6 Maximum output amplitude Fig.7 BTL driver output load regulation Fig.8 Load driver maximum output amplitude 5 Ta=27C 3 Lower DMOS loss 0 POWER DISSIPATION : (W) LOSS VOLTAGE : VLOSS (V) 2 Upper PMOS loss 1 -5 -8 0 100 200 300 400 500 600 700 800 900 1000 LOAD CURRENT : IL (mA) 0 0 25 50 75 100 125 150 AMBIENT TEMPERATURE : Ta (C) 70mmx70mm, thickness of 1.6mm, percentage occupied by copper foil of less than 3%, glass epoxy mounting Fig.9 Loading driver output load regulation Fig.10 Power dissipation !External dimensions (Units : mm) 18.50.1 36 19 9.90.2 7.50.1 0.85 1 18 2.4Max. 2.770.1 0.8 0.37-0.04 +0.05 0.27-0.045 0.08 S 0.08 M 2.20.05 0.10.05 HSOP-M36 0.50.15 1.20.2 +0.055 10/10 |
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