REF195ES

Overview

The REF195ES is a precision micropower, low dropout voltage reference from the Analog Devices REF19x series. It provides a fixed nominal output voltage of 5 V with an initial accuracy of ±2 mV maximum and a maximum temperature coefficient of 5 ppm/°C. The device operates within an input supply range of 5.1 V to 15 V and delivers up to 30 mA of output current while consuming a maximum supply current of 45 μA. It features short-circuit protection and includes a sleep mode that reduces supply current to 15 μma maximum.

Feature Summary

• Utilizes patented temperature drift curvature correction circuitry and laser trimming for high stability
• Operates with low dropout voltage requirements relative to the supply input
• Includes a dedicated sleep pin to disable the output and minimize power consumption
• Provides integrated short-circuit protection for robust operation

Applications

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

Procurement Notes

Verify the specific electrical grade suffix (E, F, or G) required for your application's accuracy and temperature coefficient specifications before ordering. Confirm the package type matches the design, as the E-grade is available in SOIC packages. Ensure the part number corresponds to the correct revision level specified in the latest datasheet to guarantee compatibility with existing designs.

Selection Notes

Select the REF195ES when a stable 5 V reference is needed with minimal quiescent current draw. The E-grade offers superior line and load regulation compared to lower grades. Consider the sleep functionality if power management is critical. Ensure the input voltage remains above the minimum dropout threshold to maintain regulation under all load conditions.

Part Context

The REF195ES belongs to the REF19x series of precision band gap voltage references manufactured by Analog Devices. This family utilizes thin-film resistors and advanced curvature correction to achieve low temperature coefficients. The ES designation indicates the E-electrical grade packaged in an 8-lead SOIC format, distinguishing it from other voltage outputs and package options within the broader REF19x lineup.

Replacement Considerations

Direct replacements include other REF195 variants such as REF195GSZ or REF195GRUZ, provided the electrical grade and package type meet the design requirements. Verify that any substitute maintains the same 5 V output and compatible operating voltage range.