INA333AIDGKR

Overview

The INA333AIDGKR is a single-channel instrumentation amplifier from Texas Instruments, housed in an 8-VSSOP package. It operates on a supply voltage range of 1.8 V to 5.5 V with a typical quiescent current of 50 µA. Key electrical specifications include a 150 kHz -3dB bandwidth, a slew rate of 0.16 V/µs, and a common-mode rejection ratio (CMRR) of 100 dB. The input bias current is 70 pA, and the input offset voltage is 10 µV. It supports gains from 1 V/V to 1000 V/V and delivers up to 40 mA output current per channel.

Feature Summary

• Zero-drift architecture minimizes offset voltage drift over temperature and time
• Rail-to-rail output capability allows full signal swing within the supply range
• Micro-power consumption enables operation in battery-powered applications

Applications

• Programmable Logic Controller (PLC) I/O modules
• Precision sensor signal conditioning
• Medical instrumentation

Procurement Notes

Verify the specific suffix 'DGKR' corresponds to the 8-VSSOP package and reel packaging configuration. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the operating temperature range of -40°C to +125°C meets your environmental specifications before finalizing procurement.

Selection Notes

Select this component when low power consumption and high precision are required simultaneously. The zero-drift technology eliminates the need for external chopper stabilization circuits. The wide gain range and rail-to-rail output make it suitable for single-supply applications where maximizing dynamic range is critical.

Part Context

This device belongs to the INA333 family of micro-power instrumentation amplifiers. It is designed to replace older bipolar or CMOS instrumentation amplifiers that require higher supply voltages or consume more power. The family offers various package options including WSON and VSSOP to suit different board space constraints.

Replacement Considerations

Check for direct pin-compatible alternatives within the INA333 series such as INA333AIDRGT if WSON packaging is acceptable. Verify that substitute parts maintain the same 100 dB CMRR and 50 µA current consumption to ensure circuit performance parity.