UTC LM386
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R107-007,B
LOW VOLTAGE AUDIO POWER
AMPLIFIER
DESCRIPTION
The UTC LM386 is a power amplifier, designed for
use in low voltage consumer applications. The gain is
internally set to 20 keep the external part count low,
but the additional of external resistor and capacitor
between pin 1 and pin 8 will increase the gain to any
value up to 200.
FEATURES
*Minimum external parts
*Wide supply voltage range: 4V~12V
*Voltage gains:20~200
*Ground referenced input
*Low distortion
DIP-8
SOP-8
PIN CONFIGURATIONS
1
2
3
4
5
6
7
8
Gain
VCC
Output
GND
-Input
Gain
Bypass
UTC LM386
+Input
BLOCK DIAGRAM
6
VCC
4 GND
2
-Input
7
Bypass
8
Gain
1
Gain
15k
3
+Input
15k
15k
1.35k
150
50k
50k
5
Output
UTC LM386
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R107-007,B
ABSOLUTE MAXIMUM RATINGS
(Ta=25
C )
PARAMETER
SYMBOL
VALUE
UNIT
Supply Voltage
Vcc
15
V
Power Dissipation DIP-8
SOP-8
Pd
1250
600
mW
Input Voltage
Vi
-0.4V~+0.4V
V
Operating Temperature
Topr
0 to 70
C
Storage Temperature
Tstg
-40 to 150
C
ELECTRICAL CHARACTERISTICS
( Ta=25
C, all voltage referenced to GND unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Quiescent circuit current
ICCQ
Vi=0
4
8
mA
Output Power
Po
Vcc=6V,THD=10%
250
325
mW
Vcc=9V,THD=10%
500
700
mW
Voltage Gain
GV
Pin1 and pin 8 open
26
dB
10
F fron pin 1 and pin 8
46
dB
Bandwidth
BW
Pin1 and pin 8 open
300
kHz
10
F fron pin 1 and pin 8
60
kHz
Total harmonic distortion
THD
Po=125mW,pin1 and pin 8 open
0.2
%
Input Resistance
Ri
50
k
Input Bias current
IBIAS
Pin1 and pin 8 open
250
nA
APPLICATION CIRCUIT
UTC
LM386
2
6
1
8
4
7
5
3
Vs
Vin
250
F
0.1
F
10
10k
Fig. 1 G
V
=20dB
UTC
LM386
2
6
1
8
4
7
5
3
10
F
250
F
10
10k
Vin
Vs
bypass
Fig. 2 G
V
=200dB
0.1
F
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