REF195FSZ-REEL

Overview

The REF195FSZ-REEL is a precision micropower low dropout voltage reference from the Analog Devices REF19x series, providing a fixed 5.0 V output. It features an initial accuracy of ±5 mV and a maximum temperature coefficient of 10 ppm/°C. The device operates with a supply current of 45 μA maximum and supports up to 30 mA output current. It includes short-circuit protection and functions within an extended industrial temperature range of −40°C to +85°C.

Feature Summary

• Utilizes patented temperature drift curvature correction circuitry for high stability
• Incorporates laser trimming of thin-film resistors to achieve precise initial accuracy
• Features a dedicated sleep mode pin that reduces supply current significantly when activated

Applications

• Portable instruments
• Analog-to-digital and digital-to-analog converters
• Smart sensors
• Solar powered applications
• Loop-current-powered instruments

Procurement Notes

Verify the specific electrical grade (F Grade) against design requirements, as performance parameters such as temperature coefficient and line regulation vary between grades. Confirm package availability matches the REEL suffix designation. Ensure compatibility with the required operating temperature range and verify that test pins remain unconnected during implementation.

Selection Notes

Select this component when a stable 5 V reference is needed with low power consumption. The F Grade offers a balance of accuracy and cost compared to higher-grade options. Consider the low dropout characteristic for battery-operated systems where supply voltage may approach the output level. Verify that the 30 mA output capability meets load requirements without exceeding thermal limits.

Part Context

This part belongs to the REF19x series of precision band gap voltage references manufactured by Analog Devices Inc. The series utilizes thin-film resistor technology and curvature correction to minimize temperature drift. The REF195 variant specifically provides a 5.0 V nominal output, distinguishing it from other members like the REF192 (2.5 V) or REF196 (3.3 V).

Replacement Considerations

Direct substitutes include other REF195 variants such as REF195ESZ or REF195GSZ, depending on the required accuracy grade. Cross-referencing with the REF19x series ordering guide is recommended to ensure equivalent electrical specifications and package compatibility.