ZXRE125DRSTOB

Overview

The ZXRE125DRSTOB is a bandgap voltage reference IC providing a fixed 1.22V output with ±1% initial accuracy. It operates within an input current range of 8µA to 20mA and features a typical temperature coefficient of 20ppm/°C. The device is housed in a surface-mount SOT-23 package, measuring 3.04mm by 2.10mm with a maximum height of 1.12mm. It supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Provides a stable 1.22V precision reference voltage suitable for space-constrained designs
• Maintains excellent stability across a wide operating current range from 8µA to 20mA
• Features low temperature drift characteristics for consistent performance over varying thermal conditions

Applications

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

Procurement Notes

Verify the specific suffix 'RSTOB' against official manufacturer documentation, as standard datasheets list tape-and-reel suffixes like 'DFTA'. Confirm availability status, as E-line variants are noted as obsolete. Ensure compliance with RoHS3 specifications and check for any recent product change notifications affecting this specific marking code.

Selection Notes

Select this component when a compact SOT-23 footprint is required for high-precision applications. The ±1% tolerance offers a balance between cost and accuracy compared to tighter 0.5% grades. Verify that the system's quiescent current requirements fall within the specified 8µA to 20mA operational window to ensure optimal regulation.

Part Context

This part belongs to the ZXRE125 series of micropower voltage references manufactured by Diodes Incorporated. The series utilizes bandgap circuitry to achieve precise voltage regulation in a small outline package. It serves as a pin-compatible replacement for older ZRA124 and ZRA125 series references, facilitating upgrades in existing designs.

Replacement Considerations

The datasheet identifies the ZRA124 and ZRA125 series as pin-for-pin compatible replacements. Verify electrical parameters such as temperature coefficient and operating current limits match the original design requirements before substitution.