INA351ABSIDDFR

Instrumentation, Op Amps, Buffer Amps Overview

The INA351ABSIDDFR is a single-channel instrumentation amplifier from Texas Instruments, housed in an 8-pin SOT-23-THN package. It operates on a supply voltage ranging from 1.8V to 5.5V and consumes a typical quiescent current of 110µA. The device features selectable gain options of 10 V/V or 20 V/V via the GS pin. Key electrical specifications include a typical input offset voltage of 200µV, a typical common-mode rejection ratio (CMRR) of 95dB, and a -3dB bandwidth of 100kHz at G=10. It supports a specified operating temperature range from -40°C to +125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Selectable gain configuration with integrated reference buffer
• Ultra-small space-saving package design
• Optimized low-power consumption for battery applications
• Integrated shutdown capability for power management

Instrumentation, Op Amps, Buffer Amps Applications

• Bridge network sensing
• Weigh scale systems
• Flow transmitters
• Pressure and temperature sensing
• Blood glucose monitors

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix DDF corresponds to the SOT-23-8 package variant when ordering. Confirm that the ABS grade meets the required offset voltage and gain error tolerances for your application. Ensure the gain select pin logic levels align with your system's control signals. Check for any regional distribution restrictions or lead time variations directly with authorized suppliers before finalizing procurement plans.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for designs requiring minimal board space and low power consumption. The fixed internal resistors eliminate the need for external precision matching components. Verify that the selected gain (10 or 20) provides sufficient signal amplification for your downstream ADC. Consider the thermal resistance characteristics if operating near the upper temperature limits.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the INA351 family of cost and size-optimized instrumentation amplifiers. It is designed to replace discrete implementations using commodity amplifiers and resistors. The ABS variant specifically offers gain options of 10 or 20, distinguishing it from the CDS variant which provides gains of 30 or 50. All variants share similar architectural benefits and performance profiles.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct functional replacements within the same family include other INA351 variants such as INA351CDSIDDFR for different gain requirements. Cross-family replacements may require significant circuit redesign due to differences in architecture and pinout compatibility.