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Part: BD7960FM
Category:
Optoelectronics
-> Drivers/Controllers
-> Optical Drivers
Description:
Company: ROHM Electronics
Datasheet: Download BD7960FM datasheet File size : 130 kB
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Datasheet text preview:
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=25°C)
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 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)
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 ×6 VCC1 11, 13, 26 31, 33pin 10, 12, 27 30, 32pin
29pin
×6
MUTE
RESET
VCC1
VCC1
8pin 50k T.S.D 50k
100
9pin
3/10
BD7960FM
Optical disc ICs
!Electrical characteristics (unless otherwise noted, Ta=25°C, 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=BIAS±0.5V 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 µA mA
VORST IREAK
0.3 0
0.5 10
V µA
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
-+
-+
+
-
-
+
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