REF193GSZ-REEL

Overview

The REF193GSZ-REEL is a precision micropower low dropout voltage reference from the Analog Devices REF19x series, housed in an 8-lead SOIC package. It provides a nominal output voltage of 3.00 V with an initial accuracy of ±2 mV maximum at 25°C. The device features a temperature coefficient of 5 ppm/°C maximum and operates over an extended industrial temperature range of −40°C to +85°C. Key electrical specifications include a maximum supply current of 45 μA, a sleep mode current of 15 μA maximum, and a high output current capability of 30 mA.

Feature Summary

• Utilizes patented temperature drift curvature correction circuitry and laser-trimmed thin-film resistors for high stability.
• Features a dedicated SLEEP pin that reduces supply current when enabled by TTL or CMOS logic levels.
• Includes short-circuit protection to safeguard the device during output faults.

Applications

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

Procurement Notes

Verify the specific suffix 'GSZ' corresponds to the 8-lead SOIC package and reel packaging configuration as indicated by the REEL designation. Confirm that the G Grade electrical specifications align with the required performance parameters for the target application environment.

Selection Notes

Select this component when a fixed 3.00 V reference with micropower consumption is required. Ensure the input supply voltage remains within the specified operating range to maintain the low dropout characteristic. Consider the thermal resistance and power dissipation limits if driving loads near the 30 mA maximum output current specification.

Part Context

This part belongs to the REF19x series of precision band gap voltage references manufactured by Analog Devices Inc. The series offers various nominal output voltages including 2.048 V, 2.50 V, 3.00 V, 3.30 V, 4.096 V, 4.50 V, and 5.00 V across different grades and packages.

Replacement Considerations

Other members of the REF19x family such as REF192GSZ (2.5 V) or REF196GSZ (3.3 V) may serve as alternatives if the output voltage requirement differs. Verify pin compatibility and electrical grade specifications before substitution.

FAQ

What is the function of Test Pins 1 and 5 on the REF193GSZ?

Test Pins 1 and 5 are factory test points reserved for in-package Zener zapping to trim the output voltage. Users should leave these pins unconnected to ensure proper operation.

How does the SLEEP pin operate on the REF193GSZ?

Applying a low TTL or CMOS level to the SLEEP pin turns off the output and reduces the supply current to less than 15 μA maximum.