INA125PA

Overview

The INA125PA is a single-channel instrumentation amplifier manufactured by Texas Instruments, housed in a 8-pin PDIP package. It operates on dual or single power supplies ranging from 2.7 V to 36 V. Key electrical specifications include a maximum input offset voltage of 0.5 mV, an input bias current of 25 nA, and a minimum common-mode rejection ratio (CMRR) of 100 dB. The device features a 3 dB bandwidth of 150 kHz and a slew rate of 200 V/ms. It functions within a temperature range of -40°C to +85°C with a typical operating supply current of 460 µA.

Feature Summary

• Integrates a precision voltage reference for simplified circuit design
• Provides high common-mode rejection ratio for accurate signal amplification
• Supports low-power operation suitable for battery-driven applications

Applications

• Precision data acquisition systems
• Medical equipment signal conditioning
• Industrial process control sensors

Procurement Notes

Verify the specific suffix 'PA' confirms the through-hole PDIP-8 package variant. Confirm RoHS compliance status as indicated in official documentation. Ensure the order matches the single-channel configuration distinct from multi-channel family members. Validate that the integrated voltage reference requirement aligns with system architecture needs before procurement.

Selection Notes

Select this component when a built-in reference voltage reduces external component count. Choose the INA125PA over other INA12x variants if the 150 kHz bandwidth meets system requirements. Consider the 100 dB CMRR for noisy environments. Evaluate the 2.7 V minimum supply voltage against available power rails. Verify thermal performance within the specified operating temperature range.

Part Context

The INA125 belongs to Texas Instruments' general-purpose instrumentation amplifier family. It shares architectural similarities with the INA126 and INA128 but includes an internal reference. This integration distinguishes it from basic models requiring external references. The PDIP package facilitates prototyping and manual assembly compared to surface-mount alternatives.

FAQ

Does the INA125PA include an internal voltage reference?

Yes, the INA125PA integrates a precision voltage reference, eliminating the need for external reference components.

What is the maximum supply voltage for the INA125PA?

The maximum supply voltage is 36 V, supporting both single and dual supply configurations.