LM387 Datasheet | National Semiconductor

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 pletely independent with an internal power supply decoupler-regulator providing 110 d B supply rejection and 60 d B channel separation Other outstanding features include high gain (104 d B) large output voltage swing (VCC b 2V)p-p and wide power bandwidth (75 k Hz 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 pensated 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 Low noise 1 0 m V total input noise High gain 104 d B open loop Single supply operation Wide supply range LM387 9 to 30V LM387A 9 to 40V Power supply rejection 110 d B Large output voltage swing (VCC b 2V)p-p Wide bandwidth 15 MHz unity gain Power bandwidth 75 k Hz 20 Vp-p Internally pensated 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 Number N08E TL H 7845 - 1 Typical Applications TL H 7845 - 3 FIGURE 1 Flat Gain Circuit (AV e 1000) TL H 7845 - 4 FIGURE 2 NAB Tape Circuit C1995 National Semiconductor Corporation TL H 7845 RRD-B30M115 Printed in U S A Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage LM387 LM387A a 30V a 40V Power Dissipation (Note 1) Operating Temperature Range Storage Temperature Range Lead Temperature (Soldering 10 sec ) 1 5W 0 C to a 70 C b 65 C to a 150 C 260...