INA117

高共模电压差动放大器

The 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 quiescent current. The INA117\x92s 0.001% nonlinearity and 200kHz bandwidth are superior to those of conventional isolation amplifiers.

The INA117 is available in 8-pin plastic mini-DIP and SO-8 surface-mount packages, specified for the \x9640°C to +85°C temperature range. The metal TO-99 models are available specified for the \x9640°C to +85°C and \x9655°C to +125°C temperature range.

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COMMON-MODE INPUT RANGE:

±200V VS = ±15V

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PROTECTED INPUTS:

±500V Common-Mode

±500V Differential

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UNITY GAIN: 0.02% Gain Error max

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NONLINEARITY: 0.001% max

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CMRR: 86dB min

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APPLICA ONS

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CURRENT MONITOR

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BATTERY CELL-VOLTAGE MONITOR

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GROUND BREAKER

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INPUT PROTECTION

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SIGNAL ACQUISITION IN NOISY ENVIRONMENTS

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FACTORY AUTOMATION