ET- LM386
Description
The MIK386 is a power amplifier designed for use in low voltage consumer applications. The gain is internally set to 20 to keep external
part count low, but the addition of an external resistor and capasitor between pins 1 and 8 will increase the gain to any value up to 200.
The inputs are ground referenced while the output is automatically biased to one half the supply voltage. The quiescent power drain is
only 24 milliwatts when operating from a 6 volt supply, making the MIK386 ideal for battery operation.
Features
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•
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•
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Battery operation
Minimun external parts
Wide supply voltage range 4V to 12V
Low quiescent current drain 4mA (Typ)
Voltage gains: 20 - 200
Ground referenced input
Self-centering output quiescent voltage
Low distortion
Applications
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•
•
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AM-FM radio amplifiers
Portable tape player amplifiers
Intercoms
TV sound systems
Line drivers
Ultrasonic drivers
Small servo drivers
Power converters
Typical Applications
Amplifier with Gain=50 (34dB)
Vcc
1.2K
6
2
V
I
10K
3
-
1
+
10
µ
F
250
µ
F
+
5
7
+
4
BYPASS
Pin connection
MIK386
8
+
10
R
L
0.05
µ
F
Absolute Maximum Ratings
Symbol
V
CC
P
D
V
IN
T
J
T
OPR
T
STG
Parameter
Supply voltage
Power dissipation
Input voltage
Junction temperature
Operating temperature
Storage temperature
Maximum
15
660
±0.4
+150
-20 ... +70
-40 ...+125
Units
V
mW
V
°C
°C
°C
Electrical Characteristics
(T
A
=25°C, V
CC
=6V, R
L
=8Ω, f=1KHz, unless otherwise specified)
Parameter
Quiescent Current
Output Power
Voltage Gain
Bandwidth
Total Harmonic Distortion
Power Supply Rejection Ratio
Input Resistance
Input Bias Current
Symbol
I
CCQ
P
OUT
A
V
BW
THD
PSRR
R
IN
I
BIAS
Conditions
V
IN
=0
V
CC
=6V, THD=10%
V
CC
=9V, THD=10%
Pins 1 and 8 Open
10 µF from Pin 1 to 8
Pins 1 and 8 Open
10 µF from Pin 1 to 8
P
OUT
=125mW, Pins 1 and 8 Open
C
bypass
=10 µF, Pins 1 and 8 Open,
Referred to output
Pins 1 and 8 Open
Min
250
500
Typ
4
325
700
26
46
300
60
0.2
50
50
250
Max
8
Units
mA
mW
dB
KHz
%
dB
kΩ
nA
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BEIJING ESTEK ELECTRONICS CO.,LTD
ESTEK [ Estek Electronics Co. Ltd ]
