REF196GSZ-REEL

Overview

The REF196GSZ-REEL is a precision micropower voltage reference from the Analog Devices REF19x series, housed in an 8-lead SOIC package. It provides a fixed nominal output voltage of 3.3 V with a maximum initial accuracy of ±2 mV and a temperature coefficient of 5 ppm/°C. The device operates within an extended industrial temperature range of −40°C to +85°C and features a low dropout voltage design that allows stable regulation from supplies as low as 100 mV above the output. It consumes a maximum supply current of 45 μA under normal operation, which reduces to less than 15 μA when the sleep mode is activated via the dedicated SLEEP pin.

Feature Summary

• Utilizes patented temperature drift curvature correction circuitry combined with laser trimming for high stability.
• Features a dedicated SLEEP pin that enables power reduction by turning off the output and lowering supply current.
• Includes short-circuit protection and low dropout voltage capability for efficient operation near supply limits.

Applications

• Portable instruments
• Analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
• Smart sensors
• Solar powered applications

Procurement Notes

Verify the specific electrical grade (G Grade) against the application requirements, as specifications vary between grades. Confirm the presence of the REEL suffix indicates tape and reel packaging rather than tube or cut tape formats. Ensure the operating environment stays within the specified -40°C to +85°C range for guaranteed performance parameters.

Selection Notes

Select this component when a precise 3.3 V reference is required with minimal quiescent current consumption. The G Grade offers a balance of accuracy and cost for general industrial applications. Consider the low dropout characteristic if the system operates on battery supplies where headroom is limited. Verify compatibility with the host logic levels for the SLEEP pin control signal.

Part Context

This part belongs to the REF19x Series of precision band gap voltage references manufactured by Analog Devices Inc. The series includes various output voltages such as 2.048 V, 2.5 V, 4.5 V, and 5 V. The GSZ suffix denotes the 8-lead SOIC package variant, while the REEL suffix specifies the bulk packaging format used for automated assembly processes.

Replacement Considerations

Other members of the REF19x family, such as REF192GSZ or REF195GSZ, may serve as alternatives if different output voltages are acceptable. Cross-referencing the specific electrical grade and package dimensions is necessary to ensure functional equivalence in existing designs.

FAQ

What is the function of Test Pins 1 and 5?

Test Pins 1 and 5 are factory test points reserved for in-package Zener zapping during manufacturing. Users should leave these pins unconnected to maintain optimal accuracy.

How does the device achieve its low temperature coefficient?

The REF19x series uses a patented temperature drift curvature correction circuit along with laser trimming of highly stable thin-film resistors to minimize temperature-induced errors.