REF198GSZ

Overview

The REF198GSZ is a precision micropower voltage reference from the Analog Devices REF19x series, housed in an 8-lead SOIC package. It provides a nominal output voltage of 4.096 V with an initial accuracy of ±2 mV maximum. The device features a low dropout voltage design and consumes a maximum supply current of 45 μA. It includes a sleep mode that reduces current consumption to 15 μa maximum. The unit offers high output current capability up to 30 mA and incorporates short-circuit protection.

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 pin for significant power reduction when inactive
• Includes built-in short-circuit protection for enhanced reliability

Applications

• Portable instrumentation
• Analog-to-digital converters (ADCs)
• Digital-to-analog converters (DACs)
• Smart sensors
• Solar powered applications

Procurement Notes

Verify the specific electrical grade (E, F, or G) required for your application, as performance specifications vary by grade. Confirm the package suffix matches the desired footprint. Ensure compatibility with the system's input voltage range and load requirements before finalizing procurement decisions.

Selection Notes

Select this component when a stable 4.096 V reference is needed with minimal power consumption. Consider the REF19x series for applications requiring low dropout operation and high output drive capability. Evaluate the specific accuracy grade against the system's tolerance requirements to ensure optimal cost-performance balance.

Part Context

This part belongs to the REF19x series of precision band gap voltage references manufactured by Analog Devices. The series is designed for micropower applications, offering various fixed output voltages in compact packages. It is commonly used in battery-operated systems where low quiescent current and high precision are critical for maintaining system accuracy over time.

Replacement Considerations

Direct replacements within the same family include other REF19x variants with different output voltages if the voltage requirement changes. Verify pinout compatibility and thermal characteristics when substituting with similar low-dropout references from other manufacturers.