REF198ES-REEL

Overview

The REF198ES-REEL is a precision micropower voltage reference from the Analog Devices REF19x series, providing a nominal output of 4.096 V. It features a maximum temperature coefficient of 5 ppm/°C and an initial accuracy of ±2 mV. The device operates with a supply current of 45 μA maximum and delivers up to 30 mA of output current. It includes a sleep mode reducing current to 15 μa and short-circuit protection. Packaged in an 8-lead SOIC, it functions within a -40°C to +85°C range.

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 low dropout voltage capability allowing operation near the output level
• Includes a dedicated sleep pin for significant power reduction in standby states

Applications

• Portable instruments requiring low power consumption
• Analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
• Smart sensors and solar powered applications
• Loop-current-powered instruments

Procurement Notes

Verify the specific suffix 'ES' against the manufacturer's ordering guide to confirm package type and grade. Ensure the REEL designation matches the required tape and reel quantity for automated assembly processes. Confirm RoHS compliance status if environmental regulations apply to the final product design.

Selection Notes

Select this component when a stable 4.096 V reference is needed with minimal quiescent current. Consider the 5 ppm/°C temperature coefficient for environments with thermal variations. Evaluate the 30 mA output drive capability against load requirements to ensure adequate performance without external buffering.

Part Context

This part belongs to the REF19x family of precision band gap voltage references. The series offers various fixed output voltages including 2.048 V, 2.5 V, 3.0 V, 3.3 V, 4.5 V, and 5.0 V. All variants share similar architectural features such as micropower operation and low dropout characteristics, differing primarily in their calibrated output levels.

Replacement Considerations

Direct replacements include other REF198 variants such as REF198GSZ or REF198GRUZ, provided they match the required electrical grade and packaging format. Verify that any substitute maintains the same 4.096 V output and compatible pinout configuration.