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Details, datasheet, quote on part number:LM381A
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| Part: | LM381A |
| Category: | Analog & Mixed-Signal Processing => Amplifiers => Operational Amplifiers => Low Noise |
| Description: | Low Noise Dual Preamplifier |
| Company: | National Semiconductor Corporation |
| Datasheet: | Download LM381A datasheet File size : 134 kB |
| Request For quote: | Find where to buy LM381A
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Datasheet text preview:
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 g aain (112 dB) large output voltage swing (VCC b 2V) p-p Lnd wide power bandwidth (75 kHz 20 Vp-p) The LM381 M381A operates from a single supply across the wide E range of 9V to 40V ither 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
Features
Y Y Y Y Y Y Y Y Y Y
Low noise 0 5 mV 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 b 2V)p-p Wide bandwidth 15 MHz unity gain Power bandwidth 75 kHz 20 Vp-p Internally compensated Short circuit protected
Schematic Diagram
TL H 7841 1
C1995 National Semiconductor Corporation
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RRD-B30M115 Printed in U S A
Absolute Maximum Ratings
p If Military Aerospace specified devices are required lease contact the National Semiconductor Sales S Office Distributors for availability and specifications upply Voltage Power Dissipation (Note 1)
a 40V
Operating Temperature Range Storage Temperature Range Lead Temperature (Soldering 10 sec )
b 65
0 C to a 70 C C to a 150 C 260 C
1 56 W VCC e 14V unless otherwise stated Min Typ 160 000 320 000 10 100 200 05 Open Loop Source Sink 150 8 2 VCC b 2 15 20 VPP (VCC e 24V) Linear Operation f e 1 kHz f e 1 kHz 60 dB Gain f e 1 kHz RS e 60X 1010 000 Hz (Single Ended Input Flat Gain Circuit AV e 1000) 05 05 07 10 mVrms mVrms 120 60 01 75 300 Max Units VV VV mA kX kX mA X mA mA V MHz kHz mVrms dB dB %
Electrical Characteristics TA e 25 C P
arameter Voltage Gain
Conditions Open Loop (Differential Input) f e 100 Hz Open Loop (Single Ended) f e 100 Hz
Supply Current Input Resistance (Positive Input) (Negative Input) Input Current (Negative Input) Output Resistance Output Current
VCC 9V to 40V RL e %
Output Voltage Swing Unity Gain Bandwidth Power Bandwidth Maximum Input Voltage Supply Rejection Ratio Channel Separation Total Harmonic Distortion Total Equivalent Input Noise LM381A LM381
Peak-to-Peak
Note 1 For operation in ambient temperatures above 25 C the device must be derated based on a 150 C maximum junction temperature and a thermal resistance C 0 C W junction to ambient of 8
onnection Diagram
Dual-In-Line Package
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Top View Order Number LM381N or LM381AN See NS Package Number N14A
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Typical Applications
Typical Tape Playback Amplifier Typical Magnetic Phono Preamp
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Two-Pole Fast Turn-On NAB Tape Preamp Audio Mixer
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TL H 7841 5 TL H 7841 6
Ultra-Low Distortion Amplifier (AV e 10 THD k 0 05% VOUT e 3 VRMS)
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