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=1.0Ω). 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=25°C) Parameter Supply voltage Symbol Limits Unit VCC 15 V W Pd 2.2∗ Operating temperature range Topr −40~+85 °C Storage temperature range Tstg −55~+150 °C Power dissipation ∗ Reduced by 17.6mW for each increase in Ta of 1°C over 25°C, on less than 3% (percentage occupied by copper foil), 70mm×70mm, t=1.6mm, glass epoxy mounting. !Recommended operating conditions (Ta=25°C) Symbol Min. Typ. Max. Unit Supply voltage 1 Parameter VCC1 4.5 8.0 14.0 V Supply voltage 2 VCC2 4.5 8.0 VCC1 V 1/10 BD7960FM Optical disc ICs !Block diagram 33 32 31 30 29 28 27 26 25 24 23 22 4 5 6 7 8 9 10 11 12 13 14 15 10k + − CH2 3 10k 10k F 10k R CH5 + Level shift − + 10k R (POWVCC) (CH1~4) VCC1 + − 10k F 47k + − 100 10k 47k + − GND2 Level shift − + + − 10k + Control logic − Level shift 10k − Control logic 47k + Level shift 10k − + − T.S.D 10k 47k MUTE + − LD CONT2 + − 47k 10k − + 47k (POWGND) (CH5/CH6) 10k LD CONT1 − + 19 CH3 + − + − 47k 10k 47k + − GND1 (POWGND) (CH1~4) BIAS 2 20 10k (POWVCC) VCC2 (CH5/CH6) − + 10k − + 1 21 CH4 + − 34 CH6 + − 35 + − 36 CH1 16 17 18 The resistance values are indicated in Ω. !Pin descriptions Pin No. Pin name Pin No. Pin name 1 GND2 POW GND (loading driver unit) Function 19 OUT3+ BTL driver (CH3) output + Function 2 OUT5− Loading driver (CH5) output − 20 OUT3− BTL driver (CH3) output − 3 OUT5+ Loading driver (CH5) output + 21 OUT4+ BTL driver (CH4) output + 4 IN5FWD Loading driver (CH5) FWD input 22 OUT4− BTL driver (CH4) output − 5 IN5REV Loading driver (CH5) REV input 23 LDCONT2 Loading driver (CH6) voltage setting terminal 6 IN6REV Loading driver (CH6) REV input 24 LDCONT1 Loading driver (CH5) voltage setting terminal 7 IN6FWD Loading driver (CH6) FWD input 25 GND1 8 MUTE BTL driver mute terminal 26 OPOUT Opamp output 9 RESET Reset output terminal 27 OPIN− Opamp negative input 10 OPIN1− CH1 opamp negative input 28 VCC2 11 OP1OUT CH1 opamp output 29 OPIN+ Opamp positive input 12 OPIN2− CH2 opamp negative input 30 OPIN4− CH4 opamp negative input 13 OP2OUT CH2 opamp output 31 OP4OUT CH4 opamp output POW GND (BTL driver unit) Supply voltage (loading driver unit) 14 VCC1 Supply voltage (BTL driver unit) 32 OPIN3− CH3 opamp negative input 15 OUT2− BTL driver (CH2) output − 33 OP3OUT CH3 opamp output 16 OUT2+ BTL driver (CH2) output + 34 OUT6+ Loading driver (CH6) output + 17 OUT1− BTL driver (CH1) output − 35 OUT6− Loading driver (CH6) output − 18 OUT1+ BTL driver (CH1) output + 36 BIAS 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 2/10 BD7960FM Optical disc ICs !Input output circuit OUT1+/OUT1−/OUT2+/OUT2− OUT3+/OUT3−/OUT4+/OUT4− BIAS VCC1 VCC1 VCC1 10k 15~22pin 10k 36pin 3k 10k 50k 50k 10k IN5FWD/IN5REV IN6FWD/IN6REV OUT5+/OUT5− OUT6+/OUT6− LDCONT1/LDCONT2 VCC2 VCC1 4, 5, 6, 7 pin VCC1 200k 23, 24 pin 2, 35pin 25k 3, 34pin 40k 25k GND2 OPIN1−/OPIN2−/OPIN3− OPIN4−/OPIN−/OPIN+ OP1OUT/OP2OUT/OP3OUT OP4OUT/OPOUT VCC1 VCC1 VCC1 ×6 VCC1 10, 12, 27 30, 32pin 29pin 11, 13, 26 31, 33pin ×6 MUTE RESET VCC1 VCC1 8pin 100 50k 9pin T.S.D 50k 3/10 BD7960FM Optical disc ICs !Electrical characteristics (unless otherwise noted, Ta=25°C, VCC1, VCC2=8V, BIAS=2.5V, RL=8Ω) Parameter Symbol Min. Typ. Max. Unit Conditions Quiescent current (VCC1) ICC1 15 25 35 mA Under no load Quiescent current (VCC2) ICC2 − 3 6 mA Under no load 〈 BTL driver CH1 to CH4 〉 Output offset voltage VOFS −40 0 +70 mV Max. output amplitude VOM 5.4 6.0 − V Closed circuit voltage gain GVC 10 12 14 dB VIN=BIAS±0.5V Opamp : Buffer Output offset voltage VOFSL −35 0 +35 mV When brake is applied Output saturation voltage H VOLH − 0.38 0.70 V IO=500mA 〈 Loading driver CH5 and CH6 〉 Output saturation voltage L VOLL − 0.12 0.25 V IO=500mA Voltage gain GVLD 4.0 6.0 8.0 dB LDCONT=1V VOPOFS −5 0 +5 mV 〈 Opamp and Pre Opamp CH1 to CH4〉 Input offset voltage Common mode input voltage range VOPICM 0.3 − VCC−1.2 V Maximum output source current ISOURCE 500 800 − µA ISINK 2 − − mA Output sat voltage VORST − 0.3 0.5 V Output leak current IREAK − 0 10 µA Maximum output sink current 〈 Reset 〉 The product is not designed for protection against radioactive rays. 4/10 BD7960FM Optical disc ICs !Measurement circuits LDCONT LDCONT VCC2 30 29 23 22 28 27 26 25 24 Level shift − + 7 8 9 10 11 12 + − + − 13 14 IQ5F A IQ6R A IQ6F OUT A IQ5R IN− A OUT A 16 17 18 IQ1 IN− OUT+ IMUTE CH1 15 OUT+ 6 OUT− 5 OUT+ 4 OUT− CH2 3 10k 10k VCC1 10k + − CH5 10k F + 10k + − 100 R R 47k 10k F 10k 47k Control logic Level shift − + + − − Level shift 10k + Control logic 47k + Level shift 10k − − + − T.S.D + − 47k MUTE + − LD CONT2 10k 47k 10k − + 47k + − LD CONT1 10k − + 10k + − 47k + − + − 47k 10k VCC2 19 CH3 10k − + 10k − + BIAS 2 20 CH4 CH6 1 21 OUT+ OUT IN− IN+ A ILDC1 + − 31 A OUT_A (CH3) OUT− 32 IN− OUT IN− OUT 33 A IQ2 OUT_A (CH4) ILDC2 OUT+ 34 OPAMP_B OPAMP_A (CH4) + − 35 OPAMP_A (CH3) OUT− 36 OUT+ A OUT− IB OUT− OUT_LD (CH6) VB A 100k (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 Ω. Fig.1 5/10 BD7960FM Optical disc ICs BIAS IN− VOFB+ V OUT + OUT+ SW3 10k 1 OPOUT V 2 1M 3 + 10k 2 1 OUT− + OUT+ V VBOP− OUT− V SW4 VO IOP SW2 RL VB 2 1 OUT_A VIN OPAMP_A IN+ IN− OUT OUT− V + OPOUT SW3 VOFO V 10k 1 2 1M 1 3 4 10k OUT− + 2 SW1 + 1 + OUT+ V VOLD V V 2 + SW5 SW4 V VBOP− OUT+ 2 IOP 1 1 2 SW2 VBOP IO IO 2 1 VIN OUT_LD OPAMP_B Fig.2 6/10 BD7960FM Optical disc ICs !Switch table for measuring circuit diagrams (unless otherwise noted, Ta=25°C, VCC1,VCC2=8V, BIAS=2.5V, VBOP=2.5V, RL=8Ω unless otherwise noted, the switch 1 is used.) Parameter Symbol Switching 1 2 3 4 5 Conditions Measurement circuit Quiescent current ICC1 2 2 LDINF=LDINR=0V, RL=∞, ICC1=IQ1 Fig.1, 2 Quiescent current (BTL MUTE) ICC2 2 2 LDINF=LDINR=0V, RL=∞, ICC2=IQ2 Fig.1, 2 2 VIN=VB, VOFS=VO Fig.1, 2 〈 BTLdriver CH1 to CH4 〉 Output offset voltage VOFS Max. output amplitude VOM VIN=GND, VOM=VO Fig.1, 2 GVC VIN=VB+0.5V, GVC=20log (VO/0.5) Fig.1, 2 VOFSL LDINF=LDINR=5V, VOFSL=VOLD Fig.1, 2 Output saturation voltage H VOLH 2 LDINF=5V, LDINR=0V, IO=500mA, VOLH=VCC−OUT+ LDINF=0V, LDINR=5V, IO=500mA, VOLH=VCC−OUT− Fig.1, 2 Output saturation voltage L VOLL 2 LDINF=5V, LDINR=0V, IO=−500mA, VOLL=OUT− LDINF=0V, LDINR=5V, IO=−500mA, VOLL=OUT+ Fig.1, 2 Voltage gain (Loading) GVLD LDCONT=1, GVLD=20log (VOLD/1V) Fig.1, 2 VOPOFS=VOFB+ Fig.1, 2 VOPICM=Between VIN to OPOUT Fig.1, 2 Closed circuit voltage gain (CH1 to CH4) 〈 Loading driver CH5 and CH6 〉 Output offset voltage 〈 Opamp and Pre Opamp CH1 to CH4 〉 Input offset voltage VOPOFS 2 Common mode input voltage range Max. output source current Max. output sink current 2 VOPICM ISOURCE 2 2 2 Fig.1, 2 ISINK 2 2 2 Fig.1, 2 〈 Reset 〉 Output sat voltage VORST Output leak current 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 LOADING2 CONT BIAS VCC2 34 33 32 31 30 29 28 27 26 25 24 23 22 + − CH2 3 4 5 6 7 8 9 10 11 12 M 13 14 VCC1 LOADING1 FWD IN LOADING2 REV IN LOADING1 REV IN 15 CH1 16 M 10k 10k VCC1 10k + − 10k + − CH5 + Level shift − + 10k F 10k 100 R R 47k 10k F Level shift − + + − 47k Control logic 47k + − − Level shift 10k + + − + Level shift 10k − − T.S.D 10k 47k Control logic − LD CONT2 MUTE 10k 47k + − − + 47k + 10k LD CONT1 + − − + 10k + − 47k 19 CH3 10k VCC2 + − 47k 2 20 10k − + 10k − + BIAS 1 21 CH4 CH6 + − 35 + − 36 + − M 17 18 M MUTE LOADING2 FWD IN 10k VCC RESET OUT CH1 IN CH2 IN The resistance values are indicated in Ω. 8/10 BD7960FM Optical disc ICs !Operation notes (1) BD7960FM has a built-in thermal shutdown circuit. When the chip temperature reaches 175°C (Typ.), the output current from all drivers is muted. When the chip temperature returns to 150°C (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 OUTPUT FWD REV OUT+ OUT− L L Hi Z Hi Z Function High impedance L H L H REV mode H L H L FWD mode H H L L 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. 0.1µF) 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 5 Ta=27°C Circuit current BIAS= 1 VCC 2 MUTE=H 15 MUTE=L 10 0 0 5 10 15 OFFSET VOLTAGE : VOFS (mV) 20 5 Ta=27°C OFFSET VOLTAGE : VOPOFS (mV) CIRCUIT CURRENT : ICC (mA) 25 0 −5 0 5 10 15 BIAS=2.5V VIN=BIAS RL=∞ 0 −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 2.0 RL=8Ω RL=4Ω 0 −5 8 Ta=27°C 1.5 VCC1=5V, VCC2=VCC3=8V BIAS=2.5V 1.0 RL=20Ω (GND standard) VIN=VCC 0.5 0 −0.5 −1.0 (VCC standard) VIN=GND −1.5 −8 −3 5 −2 −1 0 1 2 −2.0 3 0 100 200 300 400 500 600 700 800 900 1000 OUTPUT VOLTAGE : VOLD (V) Ta=27°C BTL driver CH1 VCC1=VCC2=8V 5 BIAS=2.5V LOSS VOLTAGE : VLOSS (V) OUTPUT VOLTAGE : VO (V) 8 RL=20Ω+47µF VCC2=VCC3=8V RL=8Ω+47µF 5 RL=4Ω+47µF FWD mode 0 REV mode −5 −8 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 INPUT VOLTAGE : VIN (V) LOAD CURRENT : IL (mA) LDCONT VOLTAGE : VLD (V) Fig.6 Maximum output amplitude Fig.7 BTL driver output load regulation Fig.8 Load driver maximum output amplitude 4.0 Ta=27°C POWER DISSIPATION : (W) LOSS VOLTAGE : VLOSS (V) 3 Lower DMOS loss 0 Upper PMOS loss −5 −8 0 2 1 0 100 200 300 400 500 600 700 800 900 1000 0 25 50 75 100 125 150 AMBIENT TEMPERATURE : Ta (°C) LOAD CURRENT : IL (mA) 70mm×70mm, thickness of 1.6mm, percentage occupied by copper foil of less than 3%, glass epoxy mounting Fig.10 Power dissipation Fig.9 Loading driver output load regulation !External dimensions (Units : mm) 18.5±0.1 2.2±0.05 0.1±0.05 0.85 2.4Max. 0.5±0.15 1.2±0.2 19 7.5±0.1 9.9±0.2 36 1 18 2.77±0.1 0.8 +0.055 0.27−0.045 0.08 S +0.05 0.37−0.04 0.08 M HSOP-M36 10/10