LM389 National Semiconductor, LM389 Datasheet
LM389
Manufacturer Part Number
LM389
Description
LM389 Low Voltage Audio Power Amplifier with NPN Transistor Array
Manufacturer
National Semiconductor
Datasheet
1.LM389.pdf
(8 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM3891E-MR-1.2
Manufacturer:
NS/国半
Quantity:
20 000
Part Number:
LM3892EMR-1.2
Manufacturer:
NS/国半
Quantity:
20 000
Part Number:
LM389N
Manufacturer:
NS/国半
Quantity:
20 000
www.DataSheet4U.com
C 1995 National Semiconductor Corporation
LM389 Low Voltage Audio Power Amplifier
with NPN Transistor Array
General Description
The LM389 is an array of three NPN transistors on the same
substrate with an audio power amplifier similar to the
LM386
The amplifier inputs are ground referenced while the output
is automatically biased to one half the supply voltage The
gain is internally set at 20 to minimize external parts but the
addition of an external resistor and capacitor between pins
4 and 12 will increase the gain to any value up to 200
The three transistors have high gain and excellent matching
characteristics They are well suited to a wide variety of ap-
plications in DC through VHF systems
Features
Amplifier
Y
Y
Y
Equivalent Schematic and Connection Diagrams
Battery operation
Minimum external parts
Wide supply voltage range
TL H 7847
See NS Package Number N18A
Order Number LM389N
Dual-In-Line Package
Y
Y
Y
Y
Y
Transistors
Y
Y
Y
Applications
Y
Y
Y
Y
Y
Y
Y
Low quiescent current drain
Voltage gains from 20 to 200
Ground referenced input
Self-centering output quiescent voltage
Low distortion
Operation from 1 A to 25 mA
Frequency range from DC to 100 MHz
Excellent matching
AM-FM radios
Portable tape recorders
Intercoms
Toys and games
Walkie-talkies
Portable phonographs
Power converters
TL H 7847 – 2
RRD-B30M115 Printed in U S A
December 1994
TL H 7847 – 1
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