LM1819 Datasheet | National Semiconductor

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 m A Better than 2% linearity is guaranteed over a full 305-degree operating range Features Self-centering 20 m A outputs 12V operation Norton amplifier Function generator Applications Air-core meter driver Tachometers Ruggedized instruments Typical Application .Data Sheet.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) ponents 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://..co.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 m W 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 h FE 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 Generator Gain Pin(s) 13 11 11 4 4 5 6 9 10 1 2 12 2 V1 e 5 1V ILOAD e 20 m A V8 e VREF FSD e 305...