ET-LM386 Datasheet, PDF (1/1 Pages) Estek Electronics Co. Ltd – The MIK386 is a power amplifier designed for use in low voltage consumer applications

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
• 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
• 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
V_I
10K
6
+ _10µF
2
-
1
8
MIK386
5
250µF
+
3
7
+
+
4
10
R_L
BYPASS
0.05µF
Pin connection
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
Symbol
Conditions
Quiescent Current
Output Power
Voltage Gain
I_CCQ
P_OUT
A_V
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
Bandwidth
BW
Pins 1 and 8 Open
10 µF from Pin 1 to 8
Total Harmonic Distortion
Power Supply Rejection Ratio
THD
PSRR
P_OUT=125mW, Pins 1 and 8 Open
C_bypass=10 µF, Pins 1 and 8 Open,
Referred to output
Input Resistance
R_IN
Input Bias Current
I_BIAS
Pins 1 and 8 Open
Min
Typ
Max Units
4
8
mA
250
325
mW
500
700
26
dB
46
300
KHz
60
0.2
%
50
dB
50
kΩ
250
nA
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BEIJING ESTEK ELECTRONICS CO.,LTD