INA351CDSIRUGR

Instrumentation, Op Amps, Buffer Amps Overview

The INA351CDSIRUGR is a selectable-gain instrumentation amplifier from Texas Instruments, featuring an integrated reference buffer. It operates on a single supply voltage ranging from 1.8V to 5.5V or dual supplies of ±0.9V to ±2.75V. The device offers gain options of 30 V/V and 50 V/V, selected via the GS pin. Key electrical specifications include a typical input offset voltage of 0.2mV, a quiescent current of 110µA, and a bandwidth of 40kHz at G=30. It supports a specified operating temperature range from -40°C to +125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Selectable gain architecture with integrated precision resistors for G=30 and G=50
• Integrated unity-gain reference buffer for simplified system design
• Ultra-small package footprint optimized for space-constrained applications
• Low power consumption with dedicated shutdown mode for battery operation

Instrumentation, Op Amps, Buffer Amps Applications

• Bridge network sensing
• Differential to single-ended conversion
• Weigh scale systems
• Analog input modules
• Flow transmitters

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'RUG' corresponds to the X2QFN-10 package when ordering. Confirm that the 'CDS' variant designation matches the required gain settings of 30 or 50. Ensure the component meets RoHS compliance requirements for your manufacturing process. Cross-reference the datasheet revision date to confirm parameter stability before finalizing procurement.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this part when high gain accuracy is required without external resistor matching. The integrated reference buffer eliminates the need for additional op-amps. Consider the thermal resistance characteristics of the X2QFN package if operating near maximum temperature limits. Verify that the 110µA quiescent current aligns with system power budgets.

Instrumentation, Op Amps, Buffer Amps Part Context

This component belongs to the INA351 family of cost and size-optimized instrumentation amplifiers. It replaces discrete implementations using commodity amplifiers and matched resistors. The CDS variant specifically provides higher gain options compared to the ABS series. It is designed for 10-bit to 14-bit ADC interfacing in portable and industrial devices.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

INA351ABSIRUGR: Offers different gain options (10 or 20) but shares the same RUG package and general features.