ZXRE330ASA-7

Overview

The ZXRE330ASA-7 is a precision micro-power shunt voltage reference manufactured by Diodes Incorporated. It provides a fixed output voltage of 3.3V with an initial accuracy tolerance of ±0.5% at +25°C. The device operates within a wide current range from 1µA to 5mA and features a low temperature coefficient of 20ppm/°C (typical). It is housed in a surface-mount SOT-23 package and supports an extended operating ambient temperature range from -40°C to +85°C.

Feature Summary

• Offers tight output voltage tolerance of ±0.5% at room temperature for high precision applications
• Designed for stability without requiring external output capacitors
• Maintains excellent performance across a wide operating current range from 1µA to 5mA
• Features low output noise characteristics suitable for sensitive circuits

Applications

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

Procurement Notes

Verify the specific suffix '-7' indicates the standard tape and reel packaging configuration containing 3,000 units per carrier. Confirm that the 'A' designation corresponds to the ±0.5% accuracy grade required for the design. Ensure the SOT-23 package footprint matches the PCB layout guidelines provided in the datasheet.

Selection Notes

Select this component when a stable 3.3V reference is needed in space-constrained designs utilizing surface-mount technology. The ±0.5% tolerance makes it suitable for applications demanding higher accuracy than standard ±2% references. Consider the low knee current characteristic for battery-operated devices where minimal quiescent drain is critical.

Part Context

This part belongs to the ZXRE330 family of precision micro-power shunt voltage references produced by Diodes Incorporated. The family includes variants with different accuracy grades and packages, such as the TO-92 through-hole options. The ZXRE330ASA-7 specifically denotes the SOT-23 surface-mount package with the tighter ±0.5% accuracy specification.

Replacement Considerations

The datasheet notes the device offers a pin-for-pin compatible alternative to industry standard shunt voltage references. Verify compatibility with existing circuit designs using generic shunt regulators before substitution.