INA129PG4

Overview

The INA129PG4 is a precision, low-power instrumentation amplifier manufactured by Texas Instruments. It features a high common-mode rejection ratio of 130 dB and operates with a supply current of 700 μA. The device utilizes an 8-pin PDIP package. Key electrical specifications include a maximum input offset voltage of 550 μV, a typical bandwidth of 1.3 MHz, and a maximum average bias current of 0.005 μA. It is designed for applications requiring high accuracy and low power consumption in signal conditioning circuits.

Feature Summary

• High precision performance with 130-dB common-mode rejection ratio
• Low power consumption suitable for battery-operated systems
• Ultra-low input bias current for minimal loading effects

Applications

• Strain gauge and bridge sensor signal conditioning
• Medical equipment such as ECG and EEG front-ends
• Industrial process control and monitoring systems
• Precision data acquisition systems

Procurement Notes

Verify the specific package variant and temperature grade against the official Texas Instruments datasheet before procurement. Ensure compatibility with existing PCB footprints and thermal management requirements. Confirm RoHS compliance status for the specific order code.

Selection Notes

Select this component when high common-mode rejection and low power are critical. Compare input offset voltage and drift specifications against application requirements. Consider the 8-pin DIP package constraints for board layout and assembly processes.

Part Context

This part belongs to the INA12x family of precision instrumentation amplifiers from Texas Instruments. It shares architectural similarities with the INA128 but offers optimized performance characteristics for specific low-power applications within the same product line.

Replacement Considerations

Official substitutes within the INA12x family should be verified against the manufacturer's replacement guide. Ensure pinout compatibility and electrical parameter equivalence before substitution.

FAQ

What is the typical supply current for the INA129PG4?

The typical supply current is 700 μA.

What is the maximum input offset voltage specified for this device?

The maximum input offset voltage is 550 μV.