ZXRE125FRSTOA

Overview

The ZXRE125FRSTOA is a micropower shunt voltage reference providing a fixed output of 1.22V with a tolerance grade of 3%. It utilizes an E-Line (TO-92 style) package and operates within a temperature range of -40°C to +85°C. The device features a typical temperature coefficient of 20ppm/°C, a minimum knee current of 4µA, and supports an operating current range up to 20mA. It exhibits wideband noise of 60µVrms from 10Hz to 10kHz.

Feature Summary

• Provides a stable 1.22V precision reference voltage suitable for space-constrained designs
• Maintains excellent stability under capacitive loads without requiring external compensation
• Operates efficiently at low currents with a minimum knee current of 4µA

Applications

• Battery powered equipment
• Precision power supplies
• Portable instrumentation
• Data acquisition systems

Procurement Notes

Verify the specific ordering suffix 'R' corresponds to the E-Line package configuration when sourcing this component. Confirm that the 3% tolerance grade aligns with circuit requirements, as other grades such as 0.5%, 1%, or 2% are available in different package formats like SOT23. Ensure compatibility with existing board layouts designed for TO-92 style footprints.

Selection Notes

Select this part when a small outline E-Line package is preferred over surface mount options like SOT23. The 3% tolerance offers a balance between cost and performance for general-purpose applications. Consider the 20ppm/°C temperature coefficient for environments where moderate thermal drift is acceptable. Verify that the 20mA maximum reverse current meets the load requirements of the target circuit design.

Part Context

This component belongs to the ZXRE125 series of bandgap voltage references manufactured by Diodes Incorporated. The series includes variants with different tolerances and packages, including SOT23 and E-Line configurations. It serves as a pin-for-pin replacement for older ZRA124 and ZRA125 series references, maintaining similar electrical characteristics while offering improved performance metrics.

Replacement Considerations

The ZXRE125FRSTOA is explicitly documented as a pin-for-pin compatible replacement for the ZRA124 and ZRA125 series voltage references.