ADR512ART-R2

Overview

The ADR512ART-R2 is a precision shunt voltage reference providing a fixed 1.200 V output in an ultracompact 3-lead SOT-23 package. It features low temperature drift of 60 ppm/°C and high initial accuracy of ±0.3%. The device operates with an input current range from 100 µA to 10 mA and exhibits ultralow noise of 4 µV p-p between 0.1 Hz and 10 Hz. Designed for stability without external capacitors, it includes a trim terminal for adjusting the output voltage by ±0.5%.

Feature Summary

• Ultracompact 3 mm × 3 mm SOT-23 package designed for space-critical applications
• Low output noise performance of 4 µV p-p (0.1 Hz to 10 Hz)
• Integrated trim terminal allows adjustment of output voltage over ±0.5%
• Stable operation without requiring an external output capacitor

Applications

• Precision data acquisition systems
• Battery-powered equipment such as cellular phones and GPS devices
• Portable medical instruments
• Industrial process control systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging type and reel specifications. Ensure compatibility with the required operating temperature range of −40°C to +85°C. Confirm that the selected variant matches the necessary initial accuracy and temperature coefficient requirements for the target design.

Selection Notes

Select this component when a compact footprint and low power consumption are critical constraints. The integrated trim feature provides flexibility for system-level error correction without affecting temperature stability. Verify that the bias resistor network supports the minimum 100 µA operating current across the full supply voltage range.

Part Context

This part belongs to the ADR512 series of precision shunt voltage references manufactured by Analog Devices. The series is characterized by its ability to operate effectively in handheld and battery-powered environments due to its low quiescent current and small physical size. It serves as a stable reference source for analog-to-digital converters and other precision measurement circuits.

Replacement Considerations

Check the official ordering guide for equivalent models within the same family, such as the ADR512ARTZ-REEL7, which shares identical electrical characteristics and pinout configuration.

FAQ

Does the ADR512 require an external capacitor for stability?

No, the ADR512 is designed to be stable without an external output capacitor, although one can be added for additional filtering.

How does the trim terminal affect the temperature coefficient?

Adjusting the output voltage using the trim terminal does not affect the temperature coefficient of the device.