INA327EA/250G4

Overview

The INA327EA/250G4 is a precision, low-drift CMOS instrumentation amplifier manufactured by Texas Instruments. It features a single channel with a 1 kHz bandwidth and a gain of 80 dB. Key electrical parameters include a common-mode rejection ratio (CMRR) of 100 dB, an input bias current of 2 nA, and an input offset voltage of 100 uV. The device operates on a supply voltage ranging from 2.7 V to 5.5 V with a quiescent current of 2.4 mA. It offers a power supply rejection ratio (PSRR) of approximately 94 dB and a gain error of 0.01%. The component is housed in a 10-pin MSOP package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Precision low-drift CMOS architecture designed for high accuracy applications
• Integrated shutdown capability for power management optimization
• High common-mode rejection ratio ensuring signal integrity in noisy environments

Applications

• Battery-powered sensor interfaces requiring low power consumption
• Precision data acquisition systems
• Industrial process control monitoring

Procurement Notes

Verify the specific suffix G4 indicates RoHS compliance and lead-free status as per manufacturer standards. Confirm the EA/250 designation corresponds to the correct tape-and-reel packaging quantity of 250 units. Ensure the MSOP-10 package variant matches your PCB footprint requirements. Cross-reference the datasheet revision date to confirm technical specifications have not been updated.

Selection Notes

Select this component when a balance of precision and low power is required for single-supply operation. The 1 kHz bandwidth limits suitability for high-speed applications but optimizes noise performance for DC or low-frequency signals. Consider the 2.4 mA quiescent current against stricter battery life requirements where lower current alternatives might be necessary.

Part Context

This part belongs to the INA327 family of instrumentation amplifiers, which are characterized by their low drift and CMOS technology. It serves as a specialized solution for applications demanding high CMRR and low input bias currents within a compact surface-mount package. The family is distinct from higher-bandwidth counterparts like the INA321.

Replacement Considerations

The INA326EA/250G4 is a documented alternative within the same product family, offering similar precision characteristics but utilizing a VSSOP-8 package instead of MSOP-10. Verify pinout compatibility and package dimensions before substitution.