INA321E/2K5G4

Overview

The INA321E/2K5G4 is a micropower single-supply CMOS instrumentation amplifier from Texas Instruments. It features a gain bandwidth product of 500 kHz, a common mode rejection ratio of 90 dB, and an input bias current of 10 pA. The device operates on a supply voltage ranging from 2.7 V to 5.5 V with an operating supply current of 40 uA. It has an input offset voltage of 1 mV and a slew rate of 400 mV/us. The component is housed in a VSSOP-8 package and supports surface mount installation.

Feature Summary

• Detects differential signals from interference voltages to maintain high precision in electrically noisy environments
• Suitable for driving sampling analog-to-digital converters
• Designed for general-purpose applications requiring low power consumption

Applications

• Driving sampling A/D converters
• General-purpose signal conditioning
• IoT sensor interfaces using modified topology designs

Procurement Notes

Verify the specific suffix against official documentation to confirm package type and reel specifications. Ensure the ordering code matches the required VSSOP-8 configuration. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and compliance status before finalizing procurement orders.

Selection Notes

Select this component when high precision is required in noisy environments. The low power consumption makes it suitable for battery-operated systems. Verify that the 500 kHz bandwidth meets the application requirements. Check compatibility with the target supply voltage range between 2.7 V and 5.5 V.

Part Context

This device belongs to the INA321 series of instrumentation amplifiers. It utilizes CMOS technology to achieve micropower operation. The series is designed for applications where low noise and high common mode rejection are critical. It serves as a foundational component for precision signal acquisition systems.

Replacement Considerations

Consult official substitution guides for compatible alternatives within the same family or equivalent performance tiers.