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PDF LM388 Data sheet ( Hoja de datos )
| Número de pieza | LM388 | |
| Descripción | LM388 1.5W Audio Power Amplifier | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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February 1995
LM388 1 5W Audio Power Amplifier
General Description
The LM388 is an audio amplifier designed for use in medium
power consumer applications The gain is internally set to
20 to keep external part count low but the addition of an
external resistor and capacitor between pins 2 and 6 will
increase the gain to any value up to 200
The inputs are ground referenced while the output is auto-
matically biased to one half the supply voltage
Features
Y Minimum external parts
Y Wide supply voltage range
Y Excellent supply rejection
Y Ground referenced input
Y Self-centering output quiescent voltage
Y Variable voltage gain
Y Low distortion
Y Fourteen pin dual-in-line package
Y Low voltage operation 4V
Applications
Y AM-FM radio amplifiers
Y Portable tape player amplifiers
Y Intercoms
Y TV sound systems
Y Lamp drivers
Y Line drivers
Y Ultrasonic drivers
Y Small servo drivers
Y Power converters
Equivalent Schematic and Connection Diagrams
Dual-In-Line Package
TL H 7846 – 1
Top View
TL H 7846 – 2
Order Number LM388N-1
See NS Package Number N14A
C1995 National Semiconductor Corporation TL H 7846
RRD-B30M115 Printed in U S A
1 page  
Typical Applications (Continued)
FIGURE 3
TL H 7846 – 7
TL H 7846 – 8
FIGURE 4 Ampifier with Gain e 200 and Minimum CB
VS e 6V
VS e 12V
RL e 4X
RL e 8X
FIGURE 5 Bridge Amp
PO e 1 0W
PO e 4W
TL H 7846 – 9
FIGURE 6a Amplifier with Bass Boost
TL H 7846 – 10
TL H 7846 – 11
FIGURE 6b Frequency Response
with Bass Boost
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet LM388.PDF ] | |
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