INA117PG4

高共模电压差动放大器 High Common-Mode Voltage DIFFERENCE AMPLIFIER

DESCRIPON

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 conventional isolation amplifiers.

FEATURES

● COMMON-MODE INPUT RANGE:

   ±200V VS = ±15V

● PROTECTED INPUTS:

   ±500V Common-Mode

   ±500V Differential

● UNITY GAIN: 0.02% Gain Error max

● NONLINEARITY: 0.001% max

● CMRR: 86dB min

APPLICATIONS

● CURRENT MONITOR

● BATTERY CELL-VOLTAGE MONITOR

● GROUND BREAKER

● INPUT PROTECTION

● SIGNAL ACQUISITION IN NOISY ENVIRONMENTS

● FACTORY AUTOMATION