TS821AIZ

Overview

The TS821AIZ is a micropower shunt voltage reference manufactured by STMicroelectronics, providing a stable 1.225V output. It features an initial accuracy of ±1% at 25°C and a maximum temperature coefficient of 120ppm/°C. The device operates within an industrial temperature range of -40°C to +85°C with a typical operating current of 45µA. It is housed in a TO-92-3 (TO-226AA) through-hole package.

Feature Summary

• Provides a precise 1.225V reference voltage suitable for low-power applications
• Maintains high stability under capacitive load conditions
• Offers improved accuracy compared to standard versions

Applications

• Battery-powered measurement systems
• Portable instrumentation requiring space-saving packages
• Precision analog-to-digital converter references

Procurement Notes

Verify the specific suffix 'AIZ' against official datasheets to confirm the combination of A-grade accuracy and TO-92-3 packaging. Confirm RoHS compliance status and check for End-of-Life notices or obsolescence warnings before finalizing procurement plans.

Selection Notes

Select this component when a fixed 1.225V reference is required with tighter tolerance than the standard version. Ensure the design accommodates the TO-92-3 footprint and that the 45µA quiescent current aligns with power budget constraints.

Part Context

This part belongs to the TS821 series of micropower shunt voltage references. The series includes variants with different accuracies (±2%, ±1%, ±0.5%) and packages (SOT-23-3, TO-92-3). The TS821AIZ specifically denotes the 1% accuracy grade in the through-hole TO-92-3 configuration.

Replacement Considerations

Consider TS821IZ for standard ±2% accuracy requirements or TS821BILT for surface mount SOT-23-3 packaging with higher precision.