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, providing 110 dB supply rejection and 60 dB channel separa-tion. Other outstanding features include high gain (104 dB),large output voltage swing (VCCb2V)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. TheLM387 operates from a single supply across the wide range of 9V to 30V, the LM387A operates on a supply of 9V to 40V.

Features

Low noise: 1.0mV total input noise
High gain: 104 dB open loop
Single supply operation
Wide supply range
LM387: 9 to 30V
LM387A: 9 to 40V
Power supply rejection: 110 dB
Large output voltage swing (VCCb2V)p-p
Wide bandwidth 15 MHz unity gain
Power bandwidth 75 kHz, 20 Vp-p
Internally compensated
Short circuit protected
Performance similar to LM381