REF195GSZ

Overview

The REF195GSZ is a precision micropower voltage reference from the Analog Devices REF19x series, providing a fixed 5 V output. It operates with a supply voltage range of 5.1 V to 18 V and delivers up to 30 mA of output current while consuming a maximum of 45 μA in active mode. The device features an initial accuracy of ±0.2% (±10 mV) and a temperature coefficient of 25 ppm/°C over the industrial temperature range of -40°C to +85°C. It includes short-circuit protection and a sleep mode that reduces supply current to 15 μA.

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 low dropout voltage capability allowing operation with minimal supply headroom
• Includes integrated short-circuit protection for enhanced reliability

Applications

• Portable instrumentation
• Analog-to-digital and digital-to-analog converters
• 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 performance specifications vary by grade. Confirm the package suffix matches your PCB footprint requirements. Check for recent Product Change Notifications regarding manufacturing site updates. Ensure compliance with RoHS directives if applicable to your region.

Selection Notes

Select this component when a stable 5 V reference is needed with low power consumption. Consider the REF195GRUZ variant if a TSSOP package is preferred over SOIC. Evaluate the REF195GSZ-REEL7 option if tape and reel packaging is required for automated assembly processes. Verify input voltage constraints against your system's supply rails.

Part Context

The REF195GSZ belongs to the REF19x series of precision band gap voltage references manufactured by Analog Devices. This series offers multiple nominal output voltages including 2.048 V, 2.5 V, 3.0 V, 3.3 V, 4.096 V, and 4.5 V. All variants share similar architectural features such as micropower operation and low dropout characteristics within the same family.

Replacement Considerations

REF195GRUZ: Same electrical specifications but in TSSOP-8 package instead of SOIC-8.

FAQ

What is the function of Pins 1 and 5 on the REF195GSZ?

Pins 1 and 5 are Test Pins (TP) reserved for factory Zener zapping during the laser trimming process. They should be left unconnected by the user.

How does the REF195GSZ enter sleep mode?

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