REF193GS

Overview

The REF193GS is a precision micropower, low dropout voltage reference from the Analog Devices REF19x series. It provides a fixed nominal output voltage of 3.0 V with an initial accuracy of ±2 mV maximum. The device features a maximum temperature coefficient of 5 ppm/°C and consumes a maximum supply current of 45 μA. It supports a load current up to 30 mA and includes short-circuit protection. The component operates within an extended industrial temperature range of −40°C to +85°C.

Feature Summary

• Utilizes patented temperature drift curvature correction circuitry for high stability
• Features a dedicated sleep mode pin to reduce supply current significantly
• Incorporates laser trimming of thin-film resistors for precise initial accuracy
• Provides built-in 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 suffix 'GS' against the manufacturer's ordering guide to confirm package type and grade availability. Ensure compatibility with required operating temperatures and verify that test pins remain unconnected during implementation to maintain specified accuracy levels.

Selection Notes

Select this component when a stable 3.0 V reference is required in space-constrained designs. Consider its low dropout characteristic for battery-operated systems where supply voltage may approach the output level. Evaluate the sleep mode functionality if power conservation is critical for the application lifecycle.

Part Context

This part belongs to the REF19x series of precision band gap voltage references manufactured by Analog Devices Inc. The series offers various fixed output voltages including 2.048 V, 2.5 V, 4.5 V, and 5.0 V options. All variants share similar architectural features such as micropower consumption and low dropout capabilities across different package configurations.

Replacement Considerations

Direct substitutes include other parts within the REF19x family such as REF192 or REF194, provided the output voltage difference is acceptable for the circuit design. Verify pinout compatibility and thermal characteristics before substitution.