REF43GSZ

Overview

The REF43GSZ is a low power precision voltage reference providing a stable 2.5 V output, housed in an 8-pin SOIC package. It features an initial accuracy of 0.10% and a temperature coefficient of 25 ppm/°C. The device operates within a supply voltage range of 4.5 V to 40 V and draws a supply current of 450 µA. It supports a maximum output current of 20 mA and exhibits noise of 10 µVrms from 10 Hz to 10 Hz. The operating temperature range extends from -40°C to +85°C.

Feature Summary

• Provides a stable 2.5 V output independent of variations in supply voltage, load conditions, or ambient temperature.
• Utilizes zener-zap trimming for both output voltage and temperature coefficient to ensure tight tolerances and low thermal drift.
• Incorporates a unique curvature correction circuit to reduce the thermal curvature characteristic of many previous bandgap references.

Applications

• Reference level for 8-bit data acquisition systems
• Reference level for 10-bit data acquisition systems
• Reference level for 12-bit data acquisition systems

Procurement Notes

Verify that the component matches the specific ordering suffix GSZ, which indicates an 8-pin plastic SOIC package with lead-free construction. Confirm the manufacturer is Analog Devices Inc. Ensure the part number corresponds to the standard tube packaging variant rather than reel-based versions like REEL7. Cross-reference the datasheet revision D specifications against the received hardware to confirm compliance with the stated electrical characteristics.

Selection Notes

Select this component when a fixed 2.5 V reference is required for moderate precision applications involving 8- to 12-bit data converters. The 450 µA supply current makes it suitable for power-sensitive designs compared to higher consumption alternatives. The 20 mA output capability allows direct driving of moderate loads without external buffering in many scenarios.

Part Context

The REF43GSZ belongs to the REF43 family of low power precision voltage references manufactured by Analog Devices Inc. This series includes various package options such as hermetic DIP, plastic DIP, and SOIC, with different accuracy grades ranging from 0.06% to 0.20%. The GSZ designation specifically identifies the 0.10% accuracy version in a lead-free 8-pin SOIC package.

Replacement Considerations

REF43GZ (Hermetic DIP), REF43GP (Plastic DIP), REF43GS (Standard SOIC)