INA2126E/2K5

Overview

The INA2126E/2K5 is a micropower instrumentation amplifier from Texas Instruments, featuring two channels in a 16-pin SSOP package. It operates on a single supply voltage ranging from 2.7 V to 36 V or dual supplies of ±1.35 V to ±18 V. Key electrical specifications include a gain-bandwidth product of 200 kHz, an input bias current of 25 nA, and an input offset voltage of 50 µV. The device provides a common-mode rejection ratio of 83 dB and draws an operating supply current of 175 µA. It functions within a temperature range of -40°C to +85°C.

Feature Summary

• Micropower architecture designed for low energy consumption applications
• High precision performance with low input offset voltage and bias current
• Wide single-supply operation capability simplifying power system design

Applications

• Battery-powered measurement systems requiring extended operational life
• Industrial process control signal conditioning
• Medical instrumentation front-end stages

Procurement Notes

Verify the specific suffix '2K5' indicates tape-and-reel packaging when ordering. Confirm the SSOP-16 package variant matches your PCB footprint requirements. Ensure the 83 dB CMRR specification meets your noise immunity needs. Check RoHS compliance status for environmental regulations. Validate the 2.7 V minimum supply voltage against your system's power rails.

Selection Notes

Select this component when dual-channel instrumentation amplification is required with strict power constraints. The 200 kHz bandwidth supports moderate-speed signal processing tasks. Consider the 50 µV offset voltage for high-accuracy DC measurements. The wide supply range accommodates various industrial voltage standards. Evaluate thermal performance within the specified -40°C to +85°C operating window.

Part Context

This device belongs to the INA2126 family of micropower instrumentation amplifiers, which includes single-channel variants like the INA2126A. The E/2K5 designation specifies the commercial grade temperature range and surface-mount packaging format. Texas Instruments designs this series to bridge the gap between general-purpose op-amps and higher-cost precision instruments.

FAQ

What is the maximum supply voltage for the INA2126E/2K5?

The maximum supply voltage is 36 V for single-supply operation or ±18 V for dual-supply configurations.

Does the INA2126E/2K5 support rail-to-rail output?

No, the datasheet specifications indicate that the device does not feature rail-to-rail output capability.