REF193GP

Overview

The REF193GP is a precision micropower, low dropout voltage reference from the Analog Devices REF19x series. It provides a fixed 3V output with an initial accuracy of ±0.33% and a maximum temperature coefficient of 5 ppm/°C. The device operates within a supply voltage range of 3.3V to 15V and draws a maximum supply current of 45µA. It features short-circuit protection and can deliver up to 30mA of output current. The component is housed in an 8-lead PDIP package and functions across a temperature range of -40°C to +85°C.

Feature Summary

• Patented temperature drift curvature correction circuit for high stability
• Laser-trimmed thin-film resistors ensure high initial accuracy
• Integrated short-circuit protection for robust operation
• Low dropout voltage design suitable for battery-powered systems

Applications

• Portable instrumentation
• Analog-to-digital and digital-to-analog converters
• Smart sensors
• Loop-powered instrumentation

Procurement Notes

Verify the specific suffix 'GP' against the official Analog Devices datasheet to confirm the package type and temperature grade. Ensure the ordering part number matches the required packaging format. Cross-reference with authorized distributors to confirm availability and authenticity. Check for any recent product change notices that may affect specifications or manufacturing sites.

Selection Notes

Select this component when a stable 3V reference is required with minimal power consumption. The low supply current makes it ideal for battery-operated devices. The high output current capability allows direct driving of ADCs without additional buffering. Verify that the input voltage remains within the specified dropout limits for the expected load conditions.

Part Context

The REF193 is part of the broader REF19x family of precision voltage references. This series utilizes bandgap technology with patented curvature correction. Other members include different output voltages such as 2.5V, 5V, and 10V variants. The family shares common features like micropower operation and low dropout characteristics, offering designers a standardized solution for various reference needs.

Replacement Considerations

Check for pin-compatible alternatives with similar accuracy and current capabilities. Verify that substitute parts meet the same temperature coefficient and noise specifications. Ensure the replacement supports the required output current and operating voltage range.