REF198ESZ

Overview

The REF198ESZ is a precision micropower, low dropout voltage reference from the Analog Devices REF19x series. It provides a nominal output voltage of 4.096 V with an initial accuracy of ±2 mV maximum and a temperature coefficient of 5 ppm/°C maximum. The device operates over an extended industrial temperature range of −40°C to +85°C. It features a low supply current of 45 μA maximum and includes a sleep mode that reduces current consumption to 15 μA maximum. The component offers high output current capability of 30 mA and incorporates short-circuit protection.

Feature Summary

• Utilizes patented temperature drift curvature correction circuit and laser trimming for high stability
• Features low dropout voltage design allowing operation from supplies as low as 100 mV above output
• Includes a dedicated sleep pin to reduce power consumption in standby states
• Provides integrated short-circuit protection for enhanced reliability

Applications

• Portable instruments
• ADCs and DACs
• Smart sensors
• Solar powered applications
• Loop-current-powered instruments

Procurement Notes

Verify the specific suffix 'ESZ' corresponds to the 8-lead SOIC package and E grade electrical specifications. Confirm the datasheet revision matches the required performance parameters. Ensure compatibility with the intended operating temperature range and supply voltage conditions before procurement.

Selection Notes

Select this component when a stable 4.096 V reference is required with minimal quiescent current. Consider the low dropout characteristic for battery-operated systems where supply voltage may approach the output level. Evaluate the sleep mode functionality if power conservation during idle periods is critical for the application design.

Part Context

The REF198ESZ belongs to the REF19x series of precision band gap voltage references manufactured by Analog Devices. This series is designed for applications requiring high accuracy and low power consumption. The ESZ designation indicates the specific package type and manufacturing variant within the broader product family.

Replacement Considerations

Direct substitutes within the same series include other REF19x variants such as REF198GSZ or REF198GRUZ, which share similar electrical characteristics but may differ in package style or specific grade tolerances. Verify pinout compatibility and thermal requirements when considering alternatives.