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LM387 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LM387
Description  LM387/LM387A Low Noise Dual Preamplifier
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM387 Datasheet(HTML) 1 Page - National Semiconductor (TI)

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TLH7845
March 1987
LM387LM387A 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
10 mV total input noise
Y
High gain
104 dB open loop
Y
Single supply operation
Y
Wide supply range LM387
9 to 30V
LM387A
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
TLH7845 – 1
Dual-In-Line Package
TLH7845 – 2
Top View
Order Number LM387N or LM387AN
See NS Package Number N08E
Typical Applications
TLH7845 – 3
FIGURE 1 Flat Gain Circuit (AV e 1000)
TLH7845 – 4
FIGURE 2 NAB Tape Circuit
C1995 National Semiconductor Corporation
RRD-B30M115Printed in U S A


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