INA117KU/2K5

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 quiescent current. The INA117’s 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 -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.

Applications

• CURRENT MONITOR
• BATTERY CELL-VOLTAGE MONITOR
• GROUND BREAKER
• INPUT PROTECTION
• SIGNAL ACQUISITION IN NOISY ENVIRONMENTS
• FACTORY AUTOMATION

Key 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