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LM386-1 Schematic ( PDF Datasheet ) - Wing Shing Computer Components

Teilenummer LM386-1
Beschreibung Low Voltage Audio Power Amplifier
Hersteller Wing Shing Computer Components
Logo Wing Shing Computer Components Logo怀




Gesamt 8 Seiten
LM386-1 Datasheet, Funktion
LM386-1
Low Voltage
Audio Power Amplifier
Low Voltage Audio Power Amplifier
General Description
Features
The LM386-1 is a power amplifier designed for use in low volt- n Battery operation
age consumer applications. The gain is internally set to 20 to n Minimum external parts
keep external part count low, but the addition of an external
resistor and capacitor between pins 1 and 8 will increase the
gain to any value from 20 to 200.
The inputs are ground referenced while the output automati-
cally biases to one-half the supply voltage. The quiescent
power drain is only 24 milliwatts when operating from a 6 volt
supply, making the WS386M-1 ideal for battery operation
n Wide supply voltage range: 4Vā€“12V
n Low quiescent current drain: 4mA
n Voltage gains from 20 to 200
n Ground referenced input
n Self-centering output quiescent voltage
n Low distortion: 0.2% (AV = 20, VS = 6V, RL = 8ā„¦, PO =
125mW, f = 1kHz)
n Available in 8 pin SOP package and DIP package
Applications
n AM-FM radio amplifiers
n Portable tape player amplifiers
n Intercoms
n TV sound systems
n Line drivers
n Ultrasonic drivers
n Small servo drivers
n Power converters
Ordering Information
PART NO.
LM386M-1
LM386N-1
PACKAGE
SOP-8
DIP-8
Equivalent Schematic and Connection Diagrams
Small Outline,
Dual in Line Package
Pin Connection
Wing Shing Computer Components Co., (H.K.)Ltd.
Homepage: http://www.wingshing.com
Tel:(852)2341 9276 Fax:(852)2797 8153
8-1






LM386-1 Datasheet, Funktion
LM386-1
Typical Applications (Continued)
Frequency Response with Bass Boost
AM Radio Power Amplifier
Note 4: Twist Supply lead and supply ground very tightly.
Note 5: Twist speaker lead and ground very tightly.
Note 6: Ferrite bead in Ferroxcube K5-001-001/3B with 3 turns of wire.
Note 7: R1C1 band limits input signals.
Note 8: All components must be spaced very closely to IC.
8-6

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