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PDF LM387 Data sheet ( Hoja de datos )
| Número de pieza | LM387 | |
| Descripción | LM387/LM387A Low Noise Dual Preamplifier | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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March 1987
LM387 LM387A Low Noise Dual Preamplifier
General Description
The LM387 is a dual preamplifier for the amplification of low
level signals in applications requiring optimum noise per-
formance Each of the two amplifiers is completely indepen-
dent with an internal power supply decoupler-regulator pro-
viding 110 dB supply rejection and 60 dB channel separa-
tion Other outstanding features include high gain (104 dB)
large output voltage swing (VCC b 2V)p-p and wide power
bandwidth (75 kHz 20 Vp-p) The LM387A is a selected
version of the LM387 that has lower noise in a NAB tape
circuit and can operate on a larger supply voltage The
LM387 operates from a single supply across the wide range
of 9V to 30V the LM387A operates on a supply of 9V to
40V
The amplifiers are internally compensated for gains greater
than 10 The LN387 LM387A is available in an 8-lead dual-
in-line package The LM387 LM387A is biased like the
LM381 See AN-64 and AN-104
Features
Y Low noise
1 0 mV total input noise
Y High gain
104 dB open loop
Y Single supply operation
Y Wide supply range LM387
LM387A
9 to 30V
9 to 40V
Y Power supply rejection
110 dB
Y Large output voltage swing (VCC b 2V)p-p
Y Wide bandwidth 15 MHz unity gain
Y Power bandwidth 75 kHz 20 Vp-p
Y Internally compensated
Y Short circuit protected
Y Performance similar to LM381
Schematic and Connection Diagrams
Dual-In-Line Package
Typical Applications
Top View
TL H 7845 – 2
Order Number LM387N or LM387AN
See NS Package Number N08E
TL H 7845 – 1
TL H 7845 – 3
FIGURE 1 Flat Gain Circuit (AV e 1000)
C1995 National Semiconductor Corporation TL H 7845
FIGURE 2 NAB Tape Circuit
TL H 7845 – 4
RRD-B30M115 Printed in U S A
1 page | ||
| Páginas | Total 4 Páginas | |
| PDF Descargar | [ Datasheet LM387.PDF ] | |
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