INA821IDRGR

Instrumentation, Op Amps, Buffer Amps Overview

The INA821IDRGR is a precision instrumentation amplifier from Texas Instruments, housed in an 8-pin WSON package. It features a maximum input offset voltage of 35 µV and a typical drift of 0.4 µV/°C. The device provides a low noise density of 7 nV/√Hz and supports gains from 1 to 10,000 via a single external resistor. It operates on supply voltages ranging from 4.5 V to 36 V (single) or ±2.25 V to ±18 V (dual), with a quiescent current of 650 µA maximum. Input pins are protected up to ±40 V, and it maintains high common-mode rejection ratios across the specified temperature range.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Super-beta input transistors provide ultra-low offset voltage and minimal drift for high-precision signal conditioning.
• Integrated overvoltage protection safeguards inputs against signals reaching ±40 V without damage.
• Optimized architecture ensures high common-mode rejection ratio stability across the full input common-mode voltage range.

Instrumentation, Op Amps, Buffer Amps Applications

• Analog input modules
• Flow transmitters
• Electrocardiogram (ECG) systems

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific DRG suffix indicates the 8-pin WSON package variant when sourcing. Confirm that the ordering information matches the required thermal pad connection to the negative supply rail. Ensure compatibility with standard surface-mount assembly processes for small form-factor designs.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring low power consumption alongside high bandwidth and precision. The wide supply voltage range accommodates both single-supply and dual-supply architectures. Consider the WSON package size constraints and thermal dissipation requirements relative to the application environment.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the INA821 family of low-power, precision instrumentation amplifiers. It shares core electrical characteristics with other package variants like the SOIC and VSSOP versions but utilizes the compact WSON footprint. The family is designed for general-purpose precision analog signal processing tasks.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

INA821IDR

Instrumentation, Op Amps, Buffer Amps FAQ

How is the gain configured for the INA821IDRGR?

Gain is set by a single external resistor connected between the RG pins (Pin 2 and Pin 3). The gain equation is G = 1 + (49.4 kΩ / RG).

What is the input overvoltage protection limit?

The inputs are protected against overvoltage up to ±40 V within the specified operating temperature range.