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INA117BM-3 Datasheet(PDF) 1 Page - Texas Instruments |
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INA117BM-3 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 17 page  INA117 FEATURES q COMMON-MODE INPUT RANGE: ±200V (V S = ±15V) q PROTECTED INPUTS: ±500V Common-Mode ±500V Differential q UNITY GAIN: 0.02% Gain Error max q NONLINEARITY: 0.001% max q CMRR: 86dB min APPLICATIONS q CURRENT MONITOR q BATTERY CELL-VOLTAGE MONITOR q GROUND BREAKER q INPUT PROTECTION q SIGNAL ACQUISITION IN NOISY ENVIRONMENTS q FACTORY AUTOMATION DESCRIPTION The INA117 is a precision unity-gain difference amplifier with very high common-mode input voltage range. It is a single monolithic IC consisting of a precision op amp and integrated thin-film resistor network. It can accurately measure small differential voltages in the presence of common-mode signals up to ±200V. The INA117 inputs are protected from momentary common-mode or differential overloads up to ±500V. In many applications, where galvanic isolation is not essential, the INA117 can replace isolation amplifiers. This can eliminate costly isolated input-side power supplies and their associated ripple, noise and quies- cent current. The INA117’s 0.001% nonlinearity and 200kHz bandwidth are superior to those of conven- tional isolation amplifiers. The INA117 is available in 8-pin plastic mini-DIP and SO-8 surface-mount packages, specified for the –40 °C to +85 °C temperature range. The metal TO-99 models are available specified for the –40 °C to +85°C and –55 °C to +125°C temperature range. High Common-Mode Voltage DIFFERENCE AMPLIFIER Ref B –In +In V– Comp V+ V O Ref A 1 2 3 4 8 7 6 5 21.11k Ω 380k Ω 380k Ω 380k Ω 20k Ω INA11 7 INA117 www.ti.com Copyright © 2000, Texas Instruments Incorporated SBOS154A Printed in U.S.A. December, 2000 |
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