REF192ES-REEL

Overview

The REF192ES-REEL is a precision micropower voltage reference from the Analog Devices REF19x series, featuring a nominal output voltage of 2.5 V. It utilizes patented temperature drift curvature correction and laser trimming for high accuracy. The device operates with a maximum supply current of 45 μA and supports a sleep mode reducing consumption to 15 μA. It provides a maximum output current of 30 mA with short-circuit protection. The unit is housed in an 8-lead SOIC package and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Features a low dropout voltage design allowing stable operation with minimal supply headroom.
• Includes a dedicated sleep pin that reduces supply current significantly when activated by logic levels.
• Incorporates internal short-circuit protection to safeguard the device during fault conditions.

Applications

• Portable instrumentation
• Analog-to-digital converters (ADCs)
• Digital-to-analog converters (DACs)
• Smart sensors
• Loop-current-powered instruments

Procurement Notes

Verify the specific electrical grade suffix (E, F, or G) required for your application, as performance metrics such as initial accuracy and temperature coefficient vary between grades. Confirm the REEL7 packaging designation matches your automated assembly requirements. Ensure the input voltage remains within the specified limits relative to the 2.5 V output to maintain regulation.

Selection Notes

Select this component when a fixed 2.5 V reference is needed with low power consumption. Consider the E grade for tighter initial accuracy specifications compared to F or G grades. Evaluate the need for the sleep function if power conservation is critical in standby modes. Ensure the load current does not exceed the 30 mA limit to prevent triggering protection mechanisms.

Part Context

This part belongs to the REF19x family of precision band gap voltage references. The series offers various output voltages including 2.048 V, 3.0 V, 4.5 V, and 5.0 V. The REF192 specifically targets applications requiring a 2.5 V rail. The ES suffix indicates the SOIC package variant, while REEL7 denotes tape and reel packaging for surface mount technology.

Replacement Considerations

REF192ESZ-REEL7

FAQ

What is the purpose of Test Pins 1 and 5 on the REF192?

Test Pins 1 and 5 are factory test points used for Zener zapping during production to trim the output voltage. They should remain unconnected by the user to ensure proper operation.

How does the sleep mode function on the REF192?

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, enabling significant power savings in standby states.