DUAL PRE-POWER AMP WITH VOLUME CONTROLLER S1A0136A01
1
INTRODUCTION
The S1A0136A01 is a monolithic intergrated circuit designed
for use in low voltage and low power applications. It has functions including dual audio pre-power amplifier, electronic volume 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
TSTG
− 40 — +125 °C
12
19 18 1721 2026 25 24 23 2228 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
VCC1 PRE COM- NF1 PRE ATT VOLUME VOL PWR PWR
IN1 PENSATION OUT1 IN1 REF
OUT1
GND
11
1/2 VCC2 MOTOR MOTOR MOTOR
CNTGND
PRE
GND
PRE COMPEN
NF2
PRE ATT PRE PRE PWR
IN2 -SATION OUT2 IN2 V
CC
V
CC
OUT2
MOTOR MOTOR TORQUE SPEED
ADJV
CC
OFF
CNT CNT
DUAL PRE-POWER AMP WITH VOLUME CONTROLLER S1A0136A01
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ELECTRICAL CHARACTERISTICS
(Ta = 25°C, VCC = 3V, unless otherwise specified)
PRE AMPLIFIER SECTION
(VCC = 3V, f = 1kHz, RL1 = 10kΩ, unless otherwise specified)
POWER AMPLIFIER SECTION
(Ta = 25°C, VCC = 3V, unless otherwise specified)
Characteristic Symbol Test Conditions Min. Typ. Max. Unit
Quiescent Circuit Current I
CCQ
VCC = 3V, VI = 0, IM = 0 − 18 25 mA
Characteristic Symbol Test Conditions Min. Typ. Max. Unit
Open Loop Voltage Gain G
VO
VO = −10dBm, RL = ∞ − 70 − dB
Closed Loop Voltage Gain G
VC1
VO = −10dBm 40 42 44 dB
Output Voltage V
O
THD = 1% 0.45 0.6 − V
Total Harmonic Distortion THD VO = 0.2V − 0.05 0.5 %
Output Noise Voltage V
NO1
Vi = 0, Rg = 2.2kΩ,
BPF(30 − 20kHz)
− 150 300 µV
Input Resistance R
I
VO = 10dBm 18 22 − kΩ
Cross Talk CT
1
RG = 2.2kΩ, VO = −10dBm 30 − − dB
Output Voltage In Pre OFF V
O (OFF)
VI = 100mV
Pre OFF (pin 22) = V
CC
− − −50 dB
Characteristic Symbol Test Conditions Min. Typ. Max. Unit
Closed Loop Voltage Gain G
VC2PO
= 5mW 26 28 30 dB
Voltage Gain Difference ∆GVV
CONT
= Max − 0 3 dB
Output Power 1 P
O1
THD = 10%, RL = 32Ω 20 28 − mW
Output Power 2 P
O2
THD = 10%, RL = 16Ω 30 − − mW
Total Harmonic Distortion THD2PO = 5mW − 0.2 2.0 %
Pre+ Power Output Noise Voltage V
NO2IVI
= 0, RG = 2.2kΩ, V
CONT
= Max − 6 10 mV
Output Noise Voltage V
NO3I
RG = 2.2 kΩ, V
CONT
= Min − 0.25 1.0 mV
Cross Talk CT
2
Ro = 5mW 20 30 − dB
Ripple Rejection Ratio RR VCC = 3V, 100Hz, 100mVp-p 34 40 − dB
S1A0136A01 DUAL PRE-POWER AMP WITH VOLUME CONTROLLER
4
ATTENUATOR SECTION
(Ta = 25°C, VCC = 3V, f = 1kHz, unless otherwise specified)
MOTOR SPEED CONTROLLER
(Ta = 25°C, VCC = 3V, IM = 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)VCONT
= Min 66 − − dB
Attenuation Error V
ATT(ERR)
V
CONT
= Max − 0 − dB
Input Impedance Z
I
− 15 20 − KΩ
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
VCC = 2.1 − 5.0 V − 0.05 − %/V
Reference Voltage Regulation 2 ∆V
REF2IM
= 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 VCC = 2.1 − 5.0 V − 0.50 − %/V
Current Coefficient Regulation 2 ∆K2 IM = 25 − 250 mA − 0.05 − %/mA
Current Coefficient Regulation 3 ∆K3 Ta = −10 − 50 °C − 0.02 − %/°C
Saturation Voltage V
SAT
IM = 200mA, Pin14 = V
CC
− − 0.6 V
Leakage Current I
LKG
Pin 18 = V
CC
− 50 200 µV
DUAL PRE-POWER AMP WITH VOLUME CONTROLLER S1A0136A01
5
TEST CIRCUIT
12
18 1721 2026 25 24 23 2228 27
1 2 3 4 5 6 7 8 10
16 15
13 1411
S1A0136A01
+
+
+
+
19
9
+
M
0.1µ
R
L2
ON CONT
30K
V
CC
33µ
0.022µ
2.2K
220µ
3.3µ
2.2K
0.022µ
RL1
10K
220µ
R
L2
OFF CONT
MOTOR
SW
0.15K
1.5K
RL1
10K
PRE OFF SW
S.G
S.G
16Ω
16Ω
S.G
S.G
S1A0136A01 DUAL PRE-POWER AMP WITH VOLUME CONTROLLER
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APPLICATION CIRCUIT
12
18 1721 2025 24 23 2228 27
1 2 3 4 6 7 8 10
16 15
13 1411
S1A0136A01
+
+
+
+
19
9
M
0.1µ
R
L2
SW
30K
V
CC
33µ
0.022µ
220µ
33µ
0.022µ
10kΩ
220µ
R
L2
0.15K
1.5K
26
102
5
102
SW
SW
R
L1
10kΩ
16Ω
16Ω
R
L1
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