LM381 - Low Noise Dual Preamplifier [Discontinued]
Datasheet Application Notes Knowledge Base

Features
Low noise - 0.5 µV total input noise
High gain - 112 dB open loop
Single supply operation
Wide supply range 9V-40V
Power supply rejection - 120 dB
Large output voltage swing (VCC - 2V)p-p
Wide bandwidth 15 MHz unity gain
Power bandwidth 75 kHz, 20 Vp-p
Internally compensated
Short circuit protected

 

General Description


The LM381/LM381A is a dual preamplifier for the amplification of low level signals in applications requiring optimum noise performance. More...


Additional Resources


Application Notes



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM381/LM381A Low Noise Dual Preamplifier 130
Kbytes
7-Jan-96 Download

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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 - 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 applications. For additional information see AN-64, AN-104.

Application Notes


TitleSize in Kbytes Date Click link below to Download
AN-104: Application Note 104 Noise Specs Confusing? 208
Kbytes
14-Oct-02 Download

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If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 8-Nov-2009]