REF195GRUZ

Overview

The REF195GRUZ is a micropower, low dropout voltage reference IC from the Analog Devices REF19x series. It provides a fixed nominal output voltage of 5.0 V with an initial accuracy of ±2 mV maximum and a temperature coefficient of 5 ppm/°C maximum. The device operates within an extended industrial temperature range of −40°C to +85°C. Key electrical specifications include a maximum supply current of 45 μA, a maximum sleep mode current of 15 μA, and a high output current capability of 30 mA. It features short-circuit protection and low line/load regulation.

Feature Summary

• Utilizes patented temperature drift curvature correction circuitry and laser trimming for high precision.
• Operates with minimal supply current consumption in both active and sleep modes.
• Provides stable output voltage with very low dropout characteristics relative to the supply input.
• Includes integrated short-circuit protection for enhanced reliability.

Applications

• Portable instrumentation
• Analog-to-digital (ADC) and digital-to-analog (DAC) converters
• Smart sensors
• Solar powered applications
• Loop-current-powered instruments

Procurement Notes

Verify the specific grade (E, F, or G) required for your application, as performance metrics like temperature coefficient and accuracy vary by grade. Confirm that the TSSOP-8 package suffix matches your PCB footprint requirements. Ensure the input supply voltage remains within the specified limits to maintain regulation and avoid damage. Check for any specific handling precautions related to the test pins which should remain unconnected.

Selection Notes

Select the REF195GRUZ when a precise 5 V reference is needed with strict power constraints. The low supply current makes it suitable for battery-operated devices. Consider the available grades if tighter temperature coefficients are required; Grade E offers the best performance. Ensure the load current does not exceed 30 mA and verify that the input voltage allows for sufficient headroom above the 5 V output.

Part Context

The REF195GRUZ belongs to the REF19x series of precision band gap voltage references. This family includes various nominal output voltages such as 2.048 V, 2.5 V, 3.0 V, 3.3 V, 4.096 V, 4.5 V, and 5.0 V. The GRUZ suffix indicates an 8-lead TSSOP package. Other packages in the series include SOIC and PDIP options, though some electrical grades may be limited to specific package types.

Replacement Considerations

Direct replacements within the same series include REF195GSZ (SOIC package). For different output voltages, consider REF192GRUZ (2.5 V), REF193GRUZ (3.0 V), REF196GRUZ (3.3 V), or REF198GRUZ (4.096 V). Ensure pin compatibility and thermal characteristics match the design constraints when substituting.