LM387

LM387 LM387A Low Noise Dual Preamplifier 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 performance Each of the two amplifiers is completely independent with an internal power supply decoupler-regulator providing 110 dB supply rejection and 60 dB channel separation 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 dualin-line package The LM387 LM387A is biased like the LM381 See AN-64 and AN-104 Features Y Y Y Y Y Y Y Y Y Y Y Low noise 1 0 mV 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 (VCC b 2V)p-p Wide bandwidth 15 MHz unity gain Power bandwidth 75 kHz 20 Vp-p Internally compensated Short circuit protected Performance similar to LM381 Schematic and Connection Diagrams Dual-In-Line Package TL H 7845 – 2 Top View Order Number LM387N or LM387AN See NS Package N...