LM1819 Datasheet

  • LM1819

  • National Semiconductor [Air-Core Meter Driver]

  • 210.78KB

  • NSC

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LM1819 Air-Core Meter Driver
February 1995
LM1819 Air-Core Meter Driver
General Description
The LM1819 is a function generator driver for air-core
(moving-magnet) meter movements A Norton amplifier and
an NPN transistor are included on chip for signal condition-
ing as required Driver outputs are self-centering and devel-
op
g
4 5V swing at 20 mA Better than 2% linearity is guar-
anteed over a full 305-degree operating range
Features
Y
Y
Y
Y
Self-centering 20 mA outputs
12V operation
Norton amplifier
Function generator
Applications
Y
Y
Y
Air-core meter driver
Tachometers
Ruggedized instruments
Typical Application
TL H 5263 鈥?1
FIGURE 1 Automotive Tachometer Application Circuit shown operates
with 4 cylinder engine and deflects meter pointer (270 ) at 6000 RPM
Order Number LM1819M or LM1819N
See NS Package Number M14A or N14A
TRW Type X463UW Polycarbonate Capacitor
RN60D Low TC Resistor (
g
100 ppm)
Components Required for Automotive Load Dump Protection
Available from FARIA Co
P O Box 983 Uncasville CT 06382
Tel 203-848-9271
C
1995 National Semiconductor Corporation
TL H 5263
RRD-B30M115 Printed in U S A

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