INA2137UAG4

Overview

The INA2137UAG4 is a dual-channel, low-cost FET-input operational amplifier from the MicroAmplifier series by Texas Instruments. It features a gain-bandwidth product of 1 MHz and a slew rate of 3.5 V/us. The input offset voltage is specified at 10 mV, with an input bias current of 100 pA. Operating on a single supply from 4.5 V to 36 V or dual supplies from ±2.25 V to ±18 V, it draws 220 uA per channel. Each channel provides 60 mA output current. Key performance metrics include a common-mode rejection ratio of 84 dB and an input voltage noise density of 45 nV/sqrt Hz. The device utilizes rail-to-rail input/output capabilities and is housed in an SOIC-14 package.

Feature Summary

• FET-input architecture providing low input bias current for high impedance applications
• Rail-to-rail input and output capability for maximum dynamic range
• Low cost general-purpose design within the MicroAmplifier family

Applications

• General purpose signal conditioning circuits
• Sensor interface amplification
• Data acquisition systems

Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's current datasheet to confirm compliance details and availability status. Ensure the SOIC-14 package matches the target PCB footprint. Cross-reference the part number with official Texas Instruments documentation to validate that the component remains active and not obsolete before finalizing procurement plans.

Selection Notes

Select this component when a low-cost, dual-channel solution with FET inputs is required. The 1 MHz bandwidth suits moderate-speed applications. Compare against the OPA2137UA for single-channel needs or the OPA4137UA for quad-channel requirements. Verify that the 10 mV offset voltage meets system accuracy requirements compared to higher precision alternatives.

Part Context

This part belongs to the MicroAmplifier series, designed as a low-cost alternative to standard operational amplifiers. It shares core electrical characteristics with the OPA2137 and OPA4137 families, differing primarily in channel count and package configuration. The UAG4 suffix indicates a specific tape and reel packaging variant with lead-free composition.

Replacement Considerations

Direct functional equivalents include the OPA2137UA for single-channel applications and the OPA4137UA for four-channel configurations. Verify pin compatibility and package dimensions when substituting.