The INA143 and INA2143 are high slew rate, gain of 10V/V or 0.1V/V difference amplifiers consisting of a precision op amp with a precision resistor network. The on-chip resistors are laser trimmed for accurate gain and high common-mode rejection. Excellent TCR tracking of the resistor maintains gain accuracy and common- mode rejection over temperature. They operate over a wide supply range, ±2.25V to ±18V (+4.5V to +36V single supply), and input common-mode voltage range extends beyond the positive and negative supply rails.
The INA143 (single‑ended) and INA2143 (dual) are high‑speed, precision difference amplifiers offering gains of 10 V/V or 0.1 V/V. They feature laser‑trimmed on‑chip resistors for accurate gain and excellent common‑mode rejection, making them suitable for differential input, voltage‑controlled current sources, battery‑powered systems and automotive applications.
The devices operate from a supply range of +2.25 V to +18 V, have a low offset voltage of +250 µV max, a low gain error of 0.01 %, a slew rate of 5 V/µs, and a quiescent current of about 0.95 µA per amplifier. They are offered in SO‑8 (INA143) and SO‑14 (INA2143) surface‑mount packages and are specified for operation over –55 °C to +125 °C.
| Offset Voltage (max) | 250 µV |
|---|---|
| Gain Error (typ) | 0.01 % |
| Slew Rate | 5 V/µs |
| Quiescent Current (per amp) | ≈0.95 µA |
| Supply Voltage Range | +2.25 V to +18 V |
| Input Impedance (Differential) | 20 kΩ |
| Common‑Mode Rejection Ratio | ≈140 dB |
| Small‑Signal Bandwidth (‑3 dB) | 0.15 MHz |
Both devices operate from +2.25 V up to +18 V.
The offset voltage is specified as a maximum of +250 µV.
The quiescent current is about 0.95 µA per amplifier.