ICs for Compact Disc/CD-ROM Player
1
AN8735NSB
2-channel linear driver IC for CD/CD-ROM player
s
Overview
The AN8735NSB is a 2-channel BTL driver IC
for CD/CD-ROM. It is a small package version of
the AN8735SB.
s
Features
2-channel of D range widening type BTL driver
built in
Optimum to drive a motor actuator
2 pieces of exclusive op-amp. built in
PC (power cut) function
Thermal shut-down circuit built-in (with hyster-
esis)
s
Applications
Car CD player
CD/CD-ROM player
HSOP030-P-0300
Unit: mm
12.630.20
(1.90)
(1.05)
0.500.20
0
to 10
24
19
18
13
1
6
7
(0.715)
(3.20)
0.100.10
2.000.20
7.600.30
5.500.20
0.30
+0.10
0.05
12
0.80
Seating plane
0.20
+0.10
0.05
s
Block Diagram
12
13
PGND
4
2
3
24
1
5
7
11
8
OP2
OP1
Fin
16
22
21
23
9
PC1
IN1
V
REF
IN2
PC2
18
1
2
V
CC
Reset
V
CC
det.
V
REF
det.
PGND
1
2
V
CC
17
6
14
PV
CC2
VO2
+
VO2
-
PV
CC1
VO1
+
SV
CC
VO1
-
Temp.
det.
AN8735NSB
ICs for Compact Disc/CD-ROM Player
2
Pin No.
Description
14
Driver-1 reverse rotation output pin
15
N.C.
16
Power cut input pin 1
17
Driver-1 forward rotation output pin
18
Driver power supply pin 1
19
N.C.
20
N.C.
21
V
REF
input pin
22
Driver-1 input pin
23
Driver-2 input pin
24
Op-amp. 1: non-inverted input pin
Fin
GND pin
s
Pin Descriptions
Pin No.
Description
1
Op-amp. 1: inverted inpuit pin
2
Op-amp. 1: output pin
3
Op-amp. 2: non-inverted input pin
4
Op-amp. 2: inverted inpuit pin
5
Op-amp. 2: output pin
6
Power supply pin
7
Driver power supply pin 2
8
Driver-2 reverse rotation output pin
9
Power cut input pin 2
10
N.C.
11
Driver-2 forward rotation output pin
12
Driver GND pin 1
13
Driver GND pin 2
Parameter
Symbol
Range
Unit
Supply voltage
SV
CC
4.5 to 14
V
PV
CC1
, PV
CC2
3.5 to 14
s
Recommended Operating Range
Parameter
Symbol
Rating
Unit
Supply voltage
V
CC
14.4
V
Supply current
I
SVCC
250
mA
I
PVCC1
, I
PVCC2
800
Power dissipation
*2
P
D
390
mW
Operating ambient temperature
*1
T
opr
-
30 to
+
85
C
Storage temperature
*1
T
stg
-
55 to
+
150
C
s
Absolute Maximum Ratings
Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for T
a
=
25
C.
*2: Referring to "s Usage Notes", use within the range of P
D
=
390 mW or less at T
a
=
85
C, following the allowable power
dissipation characteristic curve of "s Application Notes".
ICs for Compact Disc/CD-ROM Player
AN8735NSB
3
s
Electrical Characteristics at SV
CC
=
12 V, PV
CC1
=
PV
CC2
=
5 V, V
REF
=
1.65 V, R
L
=
8
, V
PC1
=
5 V,
V
PC2
=
5 V, T
a
=
25
C
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Current consumption 1 with no
I
SVCC
I
IN1
=
I
IN2
=
0
A, PC1
=
PC2
=
0 V
2.5
5
mA
signal
Current consumption 2 with no
I
PVCC1
I
IN1
=
I
IN2
=
0
A, PC1
=
0 V
0.3
1
mA
signal
Current consumption 3 with no
I
PVCC2
I
IN1
=
I
IN2
=
0
A, PC2
=
0 V
0.3
1
mA
signal
Driver 1, 2
R
L1
=
R
L2
=
8
Output offset voltage
V
DROF
I
IN1
=
I
IN2
=
0
A
-
65
0
65
mV
Gain (
+
)
G
1
+
R
IN1
=
R
IN2
=
10 k
,
21.5
22.9
24.3
dB
V
IN
=
V
REF
50 mV
Relative gain (
+
/
-
)
G
1
-
0.7
+
0.7
dB
Maximum output amplitude (
+
)
V
L1
+
V
IN
=
3.3 V
3.8
4.25
V
Maximum output amplitude (
-
)
V
L1
-
V
IN
=
0 V
-
4.25
-
3.8
V
Op-amp. 1, 2
Input offset voltage
V
OPOF
SV
CC
=
12 V
-
10
0
10
mV
Input bias current
I
BOP
SV
CC
=
12 V
-
2
-
0.5
0
A
High-level output voltage
V
OH
SV
CC
=
12 V, I
OP
= +
2 mA
10
V
Low-level output voltage
V
OL
SV
CC
=
12 V, I
OP
= -
2 mA
0.9
V
Output driving current sink
I
SIN
SV
CC
=
12 V
2.0
mA
Output driving current source
I
SOU
SV
CC
=
12 V
2.0
mA
Power cut operation
PC1 threshold high-level voltage
V
PC1H
SV
CC
=
12 V
2.9
V
PC1 threshold low-level voltage
V
PC1L
SV
CC
=
12 V
1.0
V
PC2 threshold high-level voltage
V
PC2H
SV
CC
=
12 V
2.9
V
PC2 threshold low-level voltage
V
PC2L
SV
CC
=
12 V
1.0
V
PC1 input current
I
PC1
SV
CC
=
12 V, PC1
=
5 V
70
140
A
PC2 input current
I
PC2
SV
CC
=
12 V, PC2
=
5 V
70
140
A
Reset circuit
Reset operation release supply
V
RST
4.5
V
voltage
V
REF
detection voltage
V
R
1.35
V
AN8735NSB
ICs for Compact Disc/CD-ROM Player
4
s
Electrical Characteristics at SV
CC
=
12 V, PV
CC1
=
PV
CC2
=
5 V, V
REF
=
1.65 V, R
L
=
8
, V
PC1
=
5 V,
V
PC2
=
5 V, T
a
=
25
C (continued)
Design reference data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Thermal protection circuit
Operating temperature
T
THD
160
C
equilibrium value
Operating temperature
T
THD
45
C
hysteresis width
Supply voltage detection
V
HD
0.2
V
hysteresis width
s
Usage Notes
1. Be sure to use SV
CC
in the maximum potential.
Otherwise, it is likely to cause an operating error.
2. On driver gain setting,
Power amp. voltage gain: 23 dB
3. On operating mode of mute,
1) Driver
PC1
PC2
High
Low (open)
High
Low (open)
Channel 1
Active
Mute
Channel 2
Active
Mute
2) General-use op-amp.
PC1
High
Low (open)
PC2
High
Active
Active
Low (open)
Active
Mute
4. Appropriate care should be taken on the characteristics.
When changing an external circuit constant on actual use, secure an appropriate margin in consideration of charac-
teristic fluctuation of external parts and our ICs including transient characteristics as well as static ones.
5. Avoid the short-circuits between output pin and V
CC
, output pin and GND (line-to-supply and line-to-ground), and
between output pins (load short-circuit). Otherwise, the IC is likely to emit smoke and break down.
6. An appropriate prior study should be done for use of dip soldering.
V
REF
Pin17 or pin 11
Pin14 or pin 8
V
REF
10 k
Pin 22 or
pin 23
200
5.5 k
Input
Input pin
Power amp. Output pin
Load
10 k
ICs for Compact Disc/CD-ROM Player
AN8735NSB
5
s
Application Notes
P
D
T
a
curves of HSOP030-P-0300
P
D
T
a
Ambient temperature T
a
(
C)
Po
wer dissipation
P
D
(W)
4.500
4.000
4.152
3.500
3.000
2.500
2.000
1.500
1.000
0.500
0.686
1.343
0.000
0
25
50
Infinite a heat sink
R
th(j-c)
=
30.1
C/W
75
100
125
150
Mounted on standard board
(glass epoxy:
50 mm
50 mm
t0.8 mm)
R
th(j-a)
=
93.1
C/W
Independent IC
without a heat sink
R
th(j-a)
=
182.0
C/W
s
Application Circuit Example
12
13
4
2
3
24
1
5
7
11
8
OP2
OP1
Fin
16
22
21
23
9
PC1
V
REF
PC2
18
1
2
V
CC
Reset
V
CC
det.
V
REF
det.
PGND
1
2
V
CC
17
6
14
PV
CC2
PV
CC1
SV
CC
Temp.
det.
PGND
GND
IN1
R
IN1
=
10 k
IN2
R
IN2
=
10 k
VO1
-
VO1
+
VO2
-
VO2
+
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