INA823DT

Instrumentation, Op Amps, Buffer Amps Overview

The INA823DT is a precision, low-power instrumentation amplifier from Texas Instruments in an 8-pin SOIC package. It operates on single supplies from 2.7 V to 36 V or dual supplies of ±1.35 V to ±18 V. Gain is set by a single external resistor (RG) using the equation G = 1 + (100 kΩ / RG), covering a range from 1 to 10,000. Key electrical characteristics include a typical input offset voltage of 20 µV and maximum of 100 µV, with a maximum input bias current of 8 nA. The device provides a common-mode rejection ratio of at least 120 dB at gains greater than or equal to 100. It features input overvoltage protection up to ±60 V and maintains stability with capacitive loads up to 1 nF.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Integrated input overvoltage protection capable of withstanding voltages up to ±60 V
• Wide common-mode voltage range extending 150 mV below the negative supply rail
• Low quiescent current consumption suitable for battery-powered applications
• High precision performance with low input offset voltage and drift

Instrumentation, Op Amps, Buffer Amps Applications

• Flow transmitters
• Wearable fitness and activity monitors
• Infusion pumps
• Blood glucose monitors
• Electrocardiogram (ECG) systems

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix 'DT' corresponds to the 8-pin SOIC package variant when sourcing. Confirm that the component is marked as production data rather than advanced information. Ensure the supplier provides documentation confirming the RoHS compliance status for the specific manufacturing lot. Cross-reference the manufacturer part number with the distributor catalog to ensure correct pinout alignment for the SOIC-8 footprint.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring high precision with minimal power consumption. The wide supply voltage range supports both low-voltage portable devices and higher-voltage industrial systems. The gain setting equation allows flexibility across a broad amplification spectrum. Consider the thermal resistance metrics if operating in enclosed environments. Verify that the required bandwidth meets the signal frequency needs at the chosen gain setting.

Instrumentation, Op Amps, Buffer Amps Part Context

This device belongs to the INA823 family of instrumentation amplifiers designed for cost-effective, high-performance signal conditioning. It shares architectural similarities with other TI precision amplifiers but distinguishes itself through its specific combination of ultra-low power and wide supply range. The family targets medical and industrial sensor interfaces where accuracy and battery life are critical constraints.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The INA823DGKR is a verified substitute part number within the same product family, offering identical functionality in an 8-pin VSSOP package.