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.
The INA117 precision difference amplifier offers a very high common‑mode input voltage range of up to +200 V while maintaining a unity‑gain error of only 0.02 % and a non‑linearity of 0.001 %. Its inputs are protected against momentary overloads of up to +500 V, making it suitable for current monitoring, battery cell‑voltage monitoring, and signal acquisition in noisy environments.
Available in 8‑pin DIP, SO‑8, and metal TO‑99 packages, the device operates from a 5 V to +18 V supply and is specified for temperatures from –55 °C to +125 °C (SM) or –40 °C to +85 °C (other packages). The datasheet includes detailed specifications, pin configuration, typical performance curves, and application circuits for current measurement and offset trimming.
| Common‑Mode Input Range | +200 V |
|---|---|
| Unity‑Gain Error (max) | 0.02 % |
| Non‑linearity (max) | 0.001 % |
| CMRR (DC, min) | 86 dB |
| Gain Bandwidth (-3 dB) | 200 kHz |
| Supply Voltage Range | 5 V to +18 V |
| Operating Temperature (SM) | –55 °C to +125 °C |
The INA117 can handle a continuous common‑mode input voltage of up to +200 V.
The device provides at least 86 dB of common‑mode rejection at DC.
The gain bandwidth (‑3 dB) of the INA117 is 200 kHz.