INA2126U

Overview

The INA2126U is a dual-channel micropower instrumentation amplifier manufactured by Texas Instruments. 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. The device features a gain bandwidth product of 200 kHz and a slew rate of 400 mV/µs. Key electrical specifications include a maximum input offset voltage of 50 µV, a minimum common-mode rejection ratio of 83 dB, and a maximum power supply current of 175 µA per channel. It utilizes a 16-pin SOIC surface-mount package.

Feature Summary

• Micropower consumption with low operating current suitable for battery-powered applications
• High precision performance characterized by low input offset voltage and high common-mode rejection
• Wide single-supply voltage range enabling direct interface with various logic levels

Applications

• Precision data acquisition systems
• Industrial process control signal conditioning
• Medical equipment sensor interfaces

Procurement Notes

Verify the specific suffix 'U' indicates the standard SOIC-16 package variant. Confirm RoHS compliance status as manufacturing processes may update. Ensure the order quantity matches the manufacturer's standard packaging requirements for tape and reel or tube options available for this specific part number.

Selection Notes

Select the INA2126U when a dual-channel solution is required in a compact surface-mount footprint. Compare against the EA/250 variant if an SSOP package is preferred or if a tighter input offset voltage specification of 250 µV is acceptable. Verify that the 200 kHz bandwidth meets the signal frequency requirements of the target application circuit.

Part Context

This component belongs to the INA2126 family of micropower instrumentation amplifiers. The family includes single-channel variants like the INA126 and dual-channel versions such as the INA2126. These devices are designed to replace discrete resistor networks, offering improved accuracy and stability in signal conditioning circuits.

Replacement Considerations

Direct pin-compatible alternatives within the same family include the INA2126EA/250 (SSOP package) and INA2126PA (PDIP package). Cross-referencing datasheets is necessary to verify package dimensions and thermal characteristics before substitution.