REF196GSZ

Overview

The REF196GSZ is a micropower, low dropout voltage reference from the Analog Devices REF19x series. It provides a nominal output voltage of 3.3 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. It features a maximum supply current of 45 μA and supports a high output current of 30 mA. The component utilizes a patented temperature drift curvature correction circuit and laser trimming for stability.

Feature Summary

• Utilizes a patented temperature drift curvature correction circuit combined with laser trimming of thin-film resistors to achieve high initial accuracy and low temperature coefficients.
• Features a dedicated sleep mode that reduces supply current to less than 15 μA when enabled by applying a low TTL or CMOS level to the SLEEP pin.
• Provides stable output voltage from supplies as low as 100 mV above the output voltage, ensuring efficient operation in low-power applications.

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 specifications such as line regulation and load regulation vary between grades. Confirm package availability, noting that PDIP and TSSOP packages are restricted to the lowest electrical grade, while all grades are available in the SOIC package. Ensure compatibility with the required operating temperature range.

Selection Notes

Select the REF196GSZ for applications requiring a precise 3.3 V reference with minimal power consumption. Consider the electrical grade based on the necessary line and load regulation performance. The device is suitable for designs where low dropout voltage and micropower operation are critical constraints.

Part Context

The REF196GSZ belongs to the REF19x series of precision band gap voltage references manufactured by Analog Devices. This series is characterized by its micropower capabilities and low dropout voltage design, making it distinct from standard voltage references that may require higher supply headroom or consume more quiescent current.

Replacement Considerations

Other members of the REF19x series, such as the REF195GSZ or REF198GSZ, offer different nominal output voltages but share similar architectural features. When substituting, ensure the replacement part matches the required output voltage and meets the specific electrical grade requirements for accuracy and regulation.

FAQ

What is the function of Test Pins 1 and 5?

Test Pins 1 and 5 are reserved for in-package Zener zap trimming during manufacturing. Users should leave these pins unconnected as their resistance values vary widely and they are not intended for user connection.

How does the sleep mode operate?

Sleep mode is enabled by applying a low TTL or CMOS level to the SLEEP pin. In this state, the output is turned off, and the supply current is reduced to less than 15 μA.