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LM381A - LM381/LM381A Low Noise Dual Preamplifier

Download the LM381A datasheet PDF. This datasheet also covers the LM381 variant, as both devices belong to the same lm381/lm381a low noise dual preamplifier family and are provided as variant models within a single manufacturer datasheet.

General Description

The LM381 LM381A 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 individual internal power supply decoupler-regulator providing 120 dB supply rejection and 60 dB channel se

Key Features

  • include high gain (112 dB) large output voltage swing (VCC b 2V) p-p and wide power bandwidth (75 kHz 20 Vp-p) The LM381 LM381A operates from a single supply across the wide range of 9V to 40V Either differential input or single ended input configurations may be selected The amplifier is internally compensated with the provision for additional external compensation for narrow band.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LM381_NationalSemiconductor.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by National Semiconductor (now Texas Instruments)

Part Number Description
LM381 LM381/LM381A Low Noise Dual Preamplifier
LM3812 Precision Current Gauge-IC
LM3813 Precision Current Gauge-IC
LM3814 Fast Current Gauge-IC
LM3815 Fast Current Gauge-IC

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
LM381 LM381A Low Noise Dual Preamplifier July 1987 LM381 LM381A Low Noise Dual Preamplifier General Description The LM381 LM381A 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 individual internal power supply decoupler-regulator providing 120 dB supply rejection and 60 dB channel separation Other outstanding features include high gain (112 dB) large output voltage swing (VCC b 2V) p-p and wide power bandwidth (75 kHz 20 Vp-p) The LM381 LM381A operates from a single supply across the wide range of 9V to 40V Either differential input or single ended input configurations may be selected The amplifier is internally compensated with the provision for additional ext