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LM1819

National Semiconductor
Part Number LM1819
Manufacturer National Semiconductor
Description Air-Core Meter Driver
Published Mar 22, 2005
Detailed Description LM1819 Air-Core Meter Driver February 1995 LM1819 Air-Core Meter Driver General Description The LM1819 is a function g...
Datasheet PDF File LM1819 PDF File

LM1819
LM1819

Overview
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 conditioning as required Driver outputs are self-centering and develop g 4 5V swing at 20 mA Better than 2% linearity is guaranteed 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 www.
DataSheet.
net/ TL H 5263 – 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 C1995 National Semiconductor Corporation TL H 5263 RRD-B30M115 Printed in U S A Datasheet pdf - http://www.
DataSheet4U.
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kr/ Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage V a (pin 13) Power Dissipation (note 1) 20V 1300 mW Operating Temperature Storage Temperature Lead Temp (Soldering 10 seconds) BVCEO b 40 C to a 85 C b 65 C to b 150 C 260 C 20VMIN Electrical Characteristics VS e 13 1V TA e 25 C unless otherwise specified Symbol IS VREG Parameter Supply Current Regulator Voltage Regulator Output Resistance VREF Reference Voltage Reference Output Resistance Norton Amplifier Mirror Gain hFE NPN Transistor DC Gain Function Generator Feedback Bias Current Drive Voltage Extremes Sine and Cosine Sine Output Voltage with Zero Input Function Generator Linearity k Function ...


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