REF198GP

Overview

The REF198GP is a precision micropower voltage reference from the Analog Devices REF19x series, housed in an 8-lead PDIP package. It provides a nominal output voltage of 4.096 V with a maximum initial accuracy of ±2 mV and a temperature coefficient of 5 ppm/°C. The device operates within an extended industrial temperature range of −40°C to +85°C, featuring low dropout voltage capability, short-circuit protection, and a sleep mode that reduces supply current to less than 15 μA.

Feature Summary

• Utilizes patented temperature drift curvature correction circuitry and laser trimming for high stability.
• Features a dedicated SLEEP pin to disable the output and minimize power consumption.
• Includes internal short-circuit protection for enhanced reliability under fault conditions.

Applications

• Portable instrumentation
• Analog-to-digital converters (ADCs)
• Digital-to-analog converters (DACs)
• Smart sensors
• Loop-current-powered instruments

Procurement Notes

Verify the specific suffix 'P' indicates the PDIP package variant when sourcing. Confirm the electrical grade requirements against datasheet specifications for line and load regulation. Ensure compatibility with the required operating temperature range and verify that test pins remain unconnected during implementation.

Selection Notes

Select this component for applications requiring low quiescent current and precise voltage stability over temperature variations. Consider the PDIP package for through-hole mounting needs. Evaluate the need for sleep mode functionality to optimize battery life in portable designs compared to standard continuous operation references.

Part Context

This part belongs to the REF19x series of precision band gap voltage references. The series offers various nominal output voltages including 2.048 V, 2.5 V, 3.0 V, 3.3 V, 4.096 V, 4.5 V, and 5.0 V. All variants share similar architectural features such as micropower operation and low dropout characteristics.

Replacement Considerations

Cross-reference with other REF19x series members like REF198GSZ for SOIC packaging or different voltage outputs if pinout compatibility is maintained. Verify thermal resistance and package dimensions differ significantly between PDIP and surface-mount alternatives.