INA331AIDGKR

The Texas Instruments INA331AIDGKR is a cost-optimized, low-power, single-supply CMOS instrumentation amplifier designed for high gain accuracy. It supports a voltage gain range from 5 V/V to 1000 V/V, with a gain error of ±0.1% maximum. The device features a low input offset voltage of ±500 µV maximum and a high Common-Mode Rejection Ratio (CMRR) of 90 dB.

With a typical quiescent current of 0.415 mA and a shutdown current of 0.01 µA, the INA331AIDGKR is suitable for power-sensitive applications. It operates over a wide temperature range of -55°C to 125°C. The amplifier provides a bandwidth of 2 MHz at minimum gain and a slew rate of 5 V/µs. Its output swing is rail-to-rail, with a typical headroom of 0.025 V to the negative supply and -0.025 V to the positive supply.

The INA331AIDGKR is available in a VSSOP (DGK) 8-lead package, measuring 14.7 mm² (3 mm × 4.9 mm). It is also offered in MSOP-8 and TSSOP-14 packages. This instrumentation amplifier is ideal for applications such as industrial sensor amplifiers, physiological amplifiers, A/D converter signal conditioning, and differential line receivers.