INA819ID

Instrumentation, Op Amps, Buffer Amps Overview

The INA819ID is a low-power precision instrumentation amplifier manufactured by Texas Instruments. It features a maximum input offset voltage of 35 µV and a low input voltage noise density of 8 nV/√Hz. The device operates with a supply current of 200 µA per channel, supporting single-supply operation from 2.7 V to 36 V or dual supplies up to ±18 V. It provides a fixed gain of 100 V/V and includes an internal reference buffer for high-impedance output drive. The component is housed in an 8-pin SOIC package and is rated for operation over an extended temperature range of -40°C to +125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultra-low input offset voltage of 35 µV maximum ensures high DC accuracy.
• Low input voltage noise density of 8 nV/√Hz supports precision signal conditioning.
• Integrated internal reference buffer simplifies circuit design and improves drive capability.

Instrumentation, Op Amps, Buffer Amps Applications

• Precision strain gauge and bridge sensor interfaces
• Medical equipment signal acquisition
• Industrial process control systems

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix against the manufacturer's official datasheet to confirm pinout compatibility and electrical specifications. Ensure the selected variant matches the required operating temperature range and packaging type for your application environment.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high DC accuracy and low noise are critical requirements. The fixed gain of 100 V/V suits applications requiring minimal external components. Consider the internal reference buffer feature if driving subsequent stages without additional amplification is necessary.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the INA81x family of low-power precision instrumentation amplifiers. It shares architectural similarities with the INA818 but offers improved offset voltage performance. The family is designed for battery-powered and portable applications where power consumption must be minimized without sacrificing signal integrity.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The INA818ID is a related component within the same product family. Verify that the slightly higher offset voltage of the INA818 meets your system requirements before substituting.