INA350ABSIRUGR

Instrumentation, Op Amps, Buffer Amps Overview

The INA350ABSIRUGR is a selectable-gain instrumentation amplifier from Texas Instruments, housed in a 10-pin X2QFN package. It operates on a single supply voltage ranging from 1.8 V to 5.5 V or dual supplies of ±0.9 V to ±2.75 V. The device offers four gain options: G=10 and G=20 for the ABS variant, selected via the GS pin logic levels. Key electrical specifications include a typical quiescent current of 100 µA, an input offset voltage of ±0.2 mV at 25°C, and a minimum common-mode rejection ratio (CMRR) of 85 dB across all gains. It features a bandwidth of 100 kHz at G=10 and supports capacitive loads up to 500 pF with less than 20% overshoot.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Selectable gain architecture allowing configuration between G=10 and G=20 via the Gain Select (GS) pin logic state.
• Ultra-small footprint utilizing a 10-pin X2QFN package measuring 1.5 mm by 2.0 mm to minimize board space.
• Integrated shutdown capability that reduces power consumption significantly when the amplifier is idle.
• Precision matched internal resistors eliminate the need for external gain-setting components.

Instrumentation, Op Amps, Buffer Amps Applications

• Bridge network sensing
• Differential to single-ended conversion
• Weigh scales
• Analog input modules
• Flow transmitters

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix IRUGR corresponds to the X2QFN-10 package and tape-and-reel shipping format. Confirm the ABS designation ensures the correct gain selection logic for G=10 and G=20. Ensure the orderable part number matches the required thermal pad connection and pinout configuration for the target PCB layout.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for designs requiring low power consumption and minimal board area. The integrated precision resistors simplify the bill of materials compared to discrete solutions. Verify that the required gain settings align with the ABS variant capabilities. Consider the shutdown feature for battery-operated applications to extend operational life during inactive periods.

Instrumentation, Op Amps, Buffer Amps Part Context

This device belongs to the INA350 family of cost and size optimized instrumentation amplifiers. It is designed to replace discrete implementations using commodity amplifiers and resistors. The family includes variants like INA350CDS for higher gain options and different package types such as WSON and SOT-23-THN.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

INA350ABSIDDFR

Instrumentation, Op Amps, Buffer Amps FAQ

How is the gain configured on the INA350ABS?

Gain is selected via the GS pin. A logic low sets G=10, while a logic high sets G=20. Leaving the pin unconnected defaults to G=20.

What is the maximum capacitive load the device can drive?

The device can drive a capacitive load of up to 500 pF with less than 20% overshoot.