INA819IDRGR

Instrumentation, Op Amps, Buffer Amps Overview

The INA819IDRGR is a precision instrumentation amplifier from Texas Instruments, featuring low offset voltage of 35 µV maximum and 8 nV/√Hz noise. It operates on single supplies from 4.5 V to 36 V or dual supplies of ±2.25 V to ±18 V. The device offers a gain range of 1 to 10,000 via a single external resistor, with a bandwidth of 2 MHz at G=1. It includes input protection up to ±60 V and maintains high common-mode rejection ratios across the specified temperature range of –40°C to +125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Super-beta input transistors provide exceptionally low input offset voltage and drift for high precision.
• Integrated overvoltage protection safeguards inputs against signals up to ±60 V.
• Optimized circuitry ensures high common-mode rejection ratio exceeding 90 dB at unity gain.
• Low power consumption allows operation in battery-powered applications with minimal current draw.

Instrumentation, Op Amps, Buffer Amps Applications

• Analog input modules
• Flow transmitters
• Electrocardiogram (ECG) systems
• Process analytics including pH and gas sensing

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific package type associated with the IDRGR suffix against the manufacturer's official documentation before procurement. Confirm that the ordering suffix aligns with the required reel quantity and tape-and-reel specifications. Ensure the component meets the intended environmental operating conditions as defined in the datasheet recommendations.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high precision and low power are critical requirements. The wide supply voltage range supports both single and dual supply designs. Consider the gain setting resistor tolerance if tight gain accuracy is needed, as the internal gain equation relies on an external resistor for values greater than unity.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the INA819 family of precision instrumentation amplifiers. It shares architectural similarities with the INA818 but differs in pin configuration for gain setting. The device is designed for applications requiring high accuracy and low noise in compact packages such as WSON.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

INA819IDR

Instrumentation, Op Amps, Buffer Amps FAQ

How is the gain of the INA819 configured?

The gain is set by a single external resistor connected between the RG pins, following the equation G = 1 + 50 kΩ / RG.

What is the maximum input voltage the device can withstand?

The inputs are protected against overvoltage up to ±60 V within the specified temperature range.