REF195GRUZ-REEL7

Overview

The REF195GRUZ-REEL7 is a precision micropower voltage reference from the Analog Devices REF19x series, featuring a fixed 5 V output. It operates within an input voltage range of 5.1 V to 15 V and delivers up to 30 mA of output current while consuming only 45 μA of supply current. The device offers high initial accuracy with tolerances of ±0.2% for E grade and ±0.4% for F/G grades. It exhibits a low temperature coefficient of 25 ppm/°C and includes short-circuit protection. The component is housed in an 8-lead TSSOP package and supports operation across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Micropower consumption with low dropout voltage capability
• Integrated sleep mode for reduced power usage
• Short-circuit protection for enhanced reliability
• High initial accuracy with laser trimming

Applications

• Portable instruments
• ADCs and DACs
• Smart sensors
• Solar powered applications
• Loop-current-powered instruments

Procurement Notes

Verify the specific electrical grade (E, F, or G) required for your application, as initial accuracy varies between ±0.2% and ±0.4%. Confirm that the 8-TSSOP package matches your PCB footprint. Ensure the input supply voltage remains within the specified 5.1 V to 15 V range to maintain proper regulation. Check datasheet specifications for line and load regulation requirements under your specific operating conditions.

Selection Notes

Select this component when a stable 5 V reference is needed with minimal quiescent current. The REF195GRUZ-REEL7 is suitable for battery-operated systems due to its micropower design and sleep mode feature. Consider the thermal coefficient and initial accuracy grades based on the precision requirements of your analog front-end. The TSSOP package is ideal for space-constrained designs requiring surface-mount assembly.

Part Context

This part belongs to the REF19x series of precision band gap voltage references. The series utilizes patented temperature drift curvature correction and laser trimming of thin-film resistors. Other variants in the family include different nominal output voltages such as 2.048 V, 2.5 V, 3.0 V, 3.3 V, 4.096 V, and 4.5 V, all sharing similar micropower characteristics and package options.

Replacement Considerations

Direct substitutes within the same family include REF195GSZ-REEL7 (SOIC-8 package) and REF195GRU (TSSOP-8 without reel). For different output voltages, consider REF192GRUZ-REEL7 (2.5 V) or REF196GRUZ-REEL7 (3.3 V). Verify pinout compatibility and thermal performance before substitution.

FAQ

What is the function of Pin 1 and Pin 5?

Pin 1 and Pin 5 are factory test points reserved for in-package Zener zap trimming. They should be left unconnected by the user.

How does the sleep mode operate?

Sleep mode is enabled by applying a low TTL or CMOS level to the SLEEP pin (Pin 3), which turns off the output and reduces supply current to less than 15 μA.

Is a capacitor required for stability?

Yes, for proper operation, a 1 μF capacitor is required between the output pin and the ground pin of the device.