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PDF LM390 Data sheet ( Hoja de datos )
| Número de pieza | LM390 | |
| Descripción | LM390 1W Battery Operated Audio Power Amplifier | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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www.DataSheet4U.com
April 1995
LM390 1W Battery Operated Audio Power Amplifier
General Description
The LM390 Power Audio Amplifier is optimized for 6V 7 5V
9V operation into low impedance loads The gain is internal-
ly set at 20 to keep the external part count low but the
addition of an external resistor and capacitor between pins
2 and 6 wil increase the gain to any value up to 200 The
inputs are ground referenced while the output is automati-
cally biased to one half the supply voltage
Features
Y Battery operation
Y 1W output power
Y Minimum external parts
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
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 7848 – 1
TL H 7848 – 2
Order Number LM390N
See NS Package Number N14A
C1995 National Semiconductor Corporation TL H 7848
RRD-B30M115 Printed in U S A
1 page  
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Typical Applications (Continued)
FIGURE 6(a) Amplifier with Bass Boost
TL H 7848 – 10
TL H 7848 – 11
FIGURE 6(b) Frequency Response
with Bass Boost
FIGURE 7 Intercom
TL H 7848 – 12
FIGURE 8 AM Radio Power Amplifier
TL H 7848 – 13
Note 1 Twist supply lead and supply ground very tightly
Note 2 Twist speaker lead and ground very tightly
Note 3 Ferrite bead is Ferroxcube K5-001-001 3B with 3 turns of wire
Note 4 R1C1 band limits input signals
Note 5 All components must be spaced very close to IC
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet LM390.PDF ] | |
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