OPA2188AIDGKR

Instrumentation, Op Amps, Buffer Amps Overview

The OPA2188AIDGKR is a dual-channel zero-drift operational amplifier manufactured by Texas Instruments. It features an input offset voltage of 6 µV and a drift of 0.03 µV/°C, utilizing auto-zero technology for high precision. The device operates on a single supply from +4.0 V to +36 V or dual supplies of ±2 V to ±18 V. Key electrical parameters include a gain-bandwidth product of 2 MHz, a slew rate of 0.8 V/µs, and a quiescent current of 415 µA. It offers rail-to-rail output capability with a maximum output current of 18 mA per channel.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Zero-drift architecture using auto-zero technology minimizes offset voltage and temperature drift
• Rail-to-rail output stage provides full signal swing near supply rails
• Low noise performance with 8.8 nV/√Hz voltage noise density at 1 kHz
• High common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR)

Instrumentation, Op Amps, Buffer Amps Applications

• Electronic scales and weighing systems
• Bridge amplifiers and strain gauge interfaces
• Medical instrumentation devices
• Sensor signal conditioning

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'DGKR' corresponds to the 8-VSSOP package and tape-and-reel quantity. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the operating temperature range meets your environmental specifications.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when low offset drift and high precision are critical. Compare against standard chopper amplifiers if lower noise is required. Consider the VSSOP-8 package constraints for PCB layout. Verify that the 18 mA output current suffices for your load requirements.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the OPA2188 series of zero-drift operational amplifiers. It shares architectural similarities with the OPA2180 but offers distinct noise and offset characteristics. The family includes single, dual, and quad variants in various packages such as SOIC, MSOP, and VSSOP.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Check for direct pin-compatible alternatives within the TI precision amplifier portfolio. Verify that substitute parts meet the same 36 V maximum supply voltage and 2 MHz bandwidth requirements.