INA333AIDGKRG4

Overview

The INA333AIDGKRG4 is a zero-drift instrumentation amplifier manufactured by Texas Instruments. It features a single channel with a 150 kHz bandwidth and a slew rate of 160 mV/us. The device offers a common-mode rejection ratio of 100 dB and an input bias current of 70 pA. Input offset voltage is specified at 10 µV. Operating supply voltage ranges from 1.8 V to 5.5 V, with a typical operating current of 50 µA. The output current per channel is 40 mA. Gain is adjustable from 1 V/V to 1000 V/V. The component operates within a temperature range of -40°C to +125°C and is housed in an 8-VSSOP package.

Feature Summary

• Zero-drift architecture utilizing chopper stabilization for low offset voltage and drift
• High common-mode rejection ratio ensuring accurate differential signal amplification
• Low power consumption suitable for battery-operated applications
• Rail-to-rail output capability for maximum dynamic range

Applications

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

Procurement Notes

Verify the complete part number including the G4 suffix, which indicates lead-free status and RoHS compliance. Confirm the specific tape and reel packaging configuration required for automated assembly processes. Ensure the ordering quantity matches the manufacturer's standard reel sizes. Cross-reference the datasheet revision date to ensure compatibility with design specifications. Validate that the 8-VSSOP footprint aligns with the printed circuit board layout constraints.

Selection Notes

Select this component when low frequency precision is critical due to its zero-drift technology. Consider the 150 kHz bandwidth limitation for high-speed applications where faster amplifiers are required. Evaluate the 1.8 V minimum supply voltage against system power rails. Compare the 70 pA input bias current requirements with source impedance levels to minimize error. Assess the thermal performance within the -40°C to +125°C operating range for environmental suitability.

Part Context

This device belongs to the INA333 family of instrumentation amplifiers designed for high-precision applications. The family is characterized by zero-drift technology, which eliminates the need for external trimming. The INA333 series provides a cost-effective solution for applications requiring high accuracy and stability over temperature variations. It serves as a direct replacement for traditional chopping amplifiers in many industrial and medical contexts.

Replacement Considerations

The INA333AIDGKR is the base part number without the G4 suffix. Verify if the G4 suffix denotes only packaging or material changes in official documentation. Check for functional equivalence with other zero-drift instrumentation amplifiers if supply chain issues arise. Ensure pinout compatibility when substituting with similar packages.