INA2126PA

Overview

The INA2126PA is a dual micropower instrumentation amplifier from Texas Instruments, housed in a 16-pin PDIP package. It operates on single or dual supplies ranging from 3V to 36V (±1.5V to ±18V). Key electrical parameters include a gain bandwidth product of 200kHz, a maximum input offset voltage of 0.5mV, and a minimum common-mode rejection ratio of 74dB. The device draws a maximum supply current of 0.4mA and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Dual-channel micropower instrumentation amplifier design
• Wide single-supply operating voltage range up to 36V
• High input impedance with low bias current characteristics

Applications

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

Procurement Notes

Verify the specific suffix 'PA' confirms the 16-lead plastic DIP package type. Ensure the required input offset voltage specification aligns with the 0.5mV maximum limit for this variant. Confirm that the through-hole mounting style matches the PCB layout requirements. Check for any specific environmental compliance certifications if required by the end application standards.

Selection Notes

Select this component when a dual-channel solution is needed with low power consumption and moderate precision. The 0.5mV offset voltage suits applications where higher accuracy variants like the INA2126E/250 are not strictly necessary. The wide supply voltage range allows flexibility in system power design without requiring additional level shifting circuits.

Part Context

This part belongs to the INA12x family of instrumentation amplifiers, designed for general-purpose analog signal conditioning. The 'P' designation indicates the plastic DIP package, while 'A' typically denotes the commercial grade temperature range and standard offset specifications within the series.

Replacement Considerations

The INA2126EA/250 offers improved offset voltage (250µV) and CMRR (83dB) in an SSOP package. The INA2126UA provides similar performance in a smaller SOIC package. Verify pin compatibility and thermal management requirements when substituting surface-mount alternatives.