INA823DR

Instrumentation, Op Amps, Buffer Amps Overview

The INA823DR is a precision, low-power instrumentation amplifier from Texas Instruments. It operates on a single supply of 2.7 V to 36 V or dual supplies of ±1.35 V to ±18 V. The device features a typical quiescent current of 180 µA and an input offset voltage of 20 µV (typical) with a maximum of 100 µV. Gain is set by a single external resistor, ranging from 1 to 10,000 V/V. It provides a bandwidth of 1.9 MHz at G=1 and includes input overvoltage protection up to ±60 V.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Integrated input overvoltage protection capable of withstanding voltages up to ±60 V.
• Low power consumption with a typical supply current of 180 µA for battery-operated systems.
• High precision performance characterized by low input offset voltage and low bias current.
• Wide common-mode voltage range extending 150 mV below the negative supply rail.

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 package type matches the 'D' suffix designation for an 8-pin SOIC. Confirm the operating temperature range requirements align with the specified -40°C to +125°C limits. Ensure the gain setting resistor selection adheres to the internal gain equation provided in the datasheet. Check for any specific handling precautions related to electrostatic discharge during assembly.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when low power consumption is critical alongside high precision requirements. It is suitable for applications requiring wide supply voltage flexibility, including single-supply operation down to 2.7 V. Consider the gain range and bandwidth trade-offs based on the specific application frequency needs. Verify that the input signal levels remain within the specified common-mode voltage range.

Instrumentation, Op Amps, Buffer Amps Part Context

The INA823 belongs to Texas Instruments' family of precision instrumentation amplifiers designed for cost-effective, low-power signal conditioning. It complements other devices like the INA821 and INA826 by offering a balance of precision and low current draw. The DR variant specifically denotes the surface-mount SOIC-8 package option.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

INA823DT

Instrumentation, Op Amps, Buffer Amps FAQ

How is the gain of the INA823 configured?

The gain is set using a single external resistor connected between pins 1 and 8, following the equation G = 1 + (100 kΩ / RG).

What is the input overvoltage protection capability?

The inputs are protected against overvoltages up to ±60 V relative to the negative supply rail.