DUAL PRE-POWER AMP WITH VOLUME CONTROLLER
S1
A0136A01
1
INTRODUCTION
The S1A0136A01 is a monolithic intergrated circuit designed
for use in low voltage and low power applications. It has func-
tions including dual audio pre-power amplifier, electronic vol-
ume controller and DC motor speed controller in a single chip.
It is suitable for portable tape recorders headphone cassette
tape recorders or radios that are battery-operated.
FEATURES
Low current consumption in an operating voltage range
Operating supply voltage range: Vcc = 2.1V
-
5V
Only a few components in composing a headphone cassette
tape recorder
Dual audio pre-power amplifier, electronic volume controller
and DC motor speed controller in a single chip
Reduced input and output coupling capacitors because of 1/2
Vcc AMP adoption on chip as AC GND
ORDERING INFORMATION
Device
Package
Operating Temperature
S1A0136A01-A0B0
28
-
SDIP
-
20
C -- + 65
C
S1A0136A01-S0B0
28
-
SOP
28
-
SDIP
28
-
SOP
S1A0136A01
DUAL PRE-POWER AMP WITH VOLUME CONTROLLER
2
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS (Ta = 25
C)
Characteristic
Symbol
Value
Unit
Supply Voltage
V
CC
7.5
V
Power Dissipation
P
O
450
mW
Operating Temperature
T
OPR
-
20 -- +70
C
Storage Temperature
T
STG
-
40 -- +125
C
12
19
18
17
21
20
26
25
24
23
22
28
27
BIAS
CIRCUIT
PRE 1
+
-
PRE 2
+
-
1
2
3
4
5
6
7
PWR 2
VOLUME
CONTROL
PWR 2
BIAS
CIRCUIT
8
9
10
MOTOR
SPEED
CONTROL
16
15
13
14
V
CC
1
PRE COM-
NF1
PRE
ATT VOLUME VOL
PWR
PWR
IN1
PENSATION
OUT1
IN1
REF
OUT1
GND
11
1/2 V
CC
2 MOTOR MOTOR
MOTOR
CNT
GND
PRE
GND
PRE COMPEN
NF2
PRE
ATT
PRE
PRE
PWR
IN2
-SATION
OUT2
IN2
V
CC
V
CC
OUT2
MOTOR MOTOR TORQUE SPEED
ADJ
V
CC
OFF
CNT
CNT
DUAL PRE-POWER AMP WITH VOLUME CONTROLLER
S1
A0136A01
3
ELECTRICAL CHARACTERISTICS
(Ta = 25
C, V
CC
= 3V, unless otherwise specified)
PRE AMPLIFIER SECTION
(V
CC
= 3V, f = 1kHz, R
L1
= 10k
,
unless otherwise specified)
POWER AMPLIFIER SECTION
(Ta = 25
C, V
CC
= 3V, unless otherwise specified)
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Quiescent Circuit Current
I
CCQ
V
CC
= 3V, V
I
= 0, I
M
= 0
-
18
25
mA
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Open Loop Voltage Gain
G
VO
V
O
=
-
10dBm, R
L
=
-
70
-
dB
Closed Loop Voltage Gain
G
VC1
V
O
=
-
10dBm
40
42
44
dB
Output Voltage
V
O
THD = 1%
0.45
0.6
-
V
Total Harmonic Distortion
THD
V
O
= 0.2V
-
0.05
0.5
%
Output Noise Voltage
V
NO1
V
i
= 0, R
g
= 2.2k
,
BPF(30
-
20kHz)
-
150
300
V
Input Resistance
R
I
V
O
= 10dBm
18
22
-
k
Cross Talk
CT
1
R
G
= 2.2k
, V
O
=
-
10dBm
30
-
-
dB
Output Voltage In Pre OFF
V
O (OFF)
V
I
= 100mV
Pre OFF (pin 22) = V
CC
-
-
-
50
dB
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Closed Loop Voltage Gain
G
VC2
P
O
= 5mW
26
28
30
dB
Voltage Gain Difference
G
V
V
CONT
= Max
-
0
3
dB
Output Power 1
P
O1
THD = 10%, R
L
= 32
20
28
-
mW
Output Power 2
P
O2
THD = 10%, R
L
= 16
30
-
-
mW
Total Harmonic Distortion
THD
2
P
O
= 5mW
-
0.2
2.0
%
Pre+ Power Output Noise Voltage
V
NO2I
V
I
= 0, R
G
= 2.2k
, V
CONT
= Max
-
6
10
mV
Output Noise Voltage
V
NO3I
R
G
= 2.2 k
, V
CONT
= Min
-
0.25
1.0
mV
Cross Talk
CT
2
R
o
= 5mW
20
30
-
dB
Ripple Rejection Ratio
RR
V
CC
= 3V, 100Hz, 100mVp-p
34
40
-
dB
S1A0136A01
DUAL PRE-POWER AMP WITH VOLUME CONTROLLER
4
ATTENUATOR SECTION
(Ta = 25
C, V
CC
= 3V, f = 1kHz, unless otherwise specified)
MOTOR SPEED CONTROLLER
(Ta = 25
C, V
CC
= 3V, I
M
= 100mA, unless otherwise specified)
* Voltage across Pin 13, 17
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Maximum Input Voltage
V
I(MAX)
-
0.2
-
-
V
Maximum Attenuation
V
ATT(MAX)
V
CONT
= Min
66
-
-
dB
Attenuation Error
V
ATT(ERR)
V
CONT
= Max
-
0
-
dB
Input Impedance
Z
I
-
15
20
-
K
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Circuit Current
I
MC
-
-
3.0
5.0
mA
Starting Current
I
MS
-
500
-
-
mA
Reference Voltage
V
REF
V(pin 15, 16)
0.72
0.80
0.87
V
Reference Voltage Regulation 1
V
REF1
V
CC
= 2.1
-
5.0 V
-
0.05
-
%/V
Reference Voltage Regulation 2
V
REF2
I
M
= 25
-
250 mA
-
0.01
-
%/mA
Reference Voltage Regulation 3
V
REF3
Ta = -10 ~ 50
C
-
0.01
-
%/
C
Current Coefficient
K
-
32
38
43
-
Current Coefficient Regulation 1
K1
V
CC
= 2.1
-
5.0 V
-
0.50
-
%/V
Current Coefficient Regulation 2
K2
I
M
= 25
-
250 mA
-
0.05
-
%/mA
Current Coefficient Regulation 3
K3
Ta =
-
10
-
50
C
-
0.02
-
%/
C
Saturation Voltage
V
SAT
I
M
= 200mA, Pin14 = V
CC
-
-
0.6
V
Leakage Current
I
LKG
Pin 18 = V
CC
-
50
200
V
DUAL PRE-POWER AMP WITH VOLUME CONTROLLER
S1
A0136A01
5
TEST CIRCUIT
12
18
17
21
20
26
25
24
23
22
28
27
1
2
3
4
5
6
7
8
10
16
15
13
14
11
S1A0136A01
+
+
+
+
19
9
+
M
0.1
R
L2
ON CONT
30K
V
CC
33
0.022
2
.
2
K
220
3.3
2.2K
0.022
RL1
10K
220
R
L2
O
F
F
C
O
N
T
MOTOR
SW
0.15K
1.5K
RL1
10K
PRE OFF SW
S.G
S.G
16
16
S.G
S.G
S1A0136A01
DUAL PRE-POWER AMP WITH VOLUME CONTROLLER
6
APPLICATION CIRCUIT
12
18
17
21
20
25
24
23
22
28
27
1
2
3
4
6
7
8
10
16
15
13
14
11
S1A0136A01
+
+
+
+
19
9
M
0.1
R
L2
SW
30K
V
CC
33
0.022
220
33
0.022
10k
220
R
L2
0
.
1
5
K
1.5K
26
102
5
102
SW
SW
R
L1
10k
16
16
R
L1
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