DS4303R+T&R

Overview

The DS4303R+T&R is a nonvolatile electronically programmable voltage reference in a 5-lead SOT23 package. It operates on a single supply of 2.4V to 3.6V with a typical supply current of 1.6mA. The output voltage range spans from 0.3V to VCC - 0.3V, providing ±1mA drive capability. Factory calibration allows adjustment within ±1mV quantization accuracy. Temperature coefficients vary by range: ±104µV/°C (-40°C to +85°C at 0.4V) and -5 to +62ppm/°C (+25°C to +85°C at 3.0V). Noise is 200µVP-P (0.1Hz to 10Hz) and 26µVRMS (10Hz to 1kHz).

Feature Summary

• Nonvolatile memory stores the calibrated voltage indefinitely without power.
• Enables automated factory trimming using simple VIN and ADJ pin toggling.
• Provides low-noise precision output suitable for sensitive analog circuits.

Applications

• Power-supply calibration
• Threshold setting
• Offset nulling
• Bias adjusting

Procurement Notes

Verify the specific suffix 'R' indicates tape-and-reel packaging when sourcing. Confirm the '+ ' designation ensures lead-free compliance. Check datasheet revision history for any updates to electrical characteristics or recommended operating conditions before finalizing procurement specifications.

Selection Notes

Select this component when a precise, adjustable voltage reference is required that can be programmed post-manufacturing. Ensure the application supports the 2.4V to 3.6V supply range. Consider the SOT23-5 footprint constraints and verify that the ±1mA output current meets the load requirements.

Part Context

This device belongs to the DS4303 family of nonvolatile voltage references manufactured by Analog Devices Inc./Maxim Integrated. It serves as a modern replacement for traditional shunt references and mechanical potentiometers, offering digital adjustability and long-term stability in a compact surface-mount package.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

FAQ

How is the output voltage adjusted?

Apply the desired target voltage to the VIN pin and pull the ADJ pin low for at least 100ns. The device internally adjusts the DAC until VOUT matches VIN, then stores the value in EEPROM.

What is the programming endurance?

The internal EEPROM supports up to 50,000 programming cycles at temperatures up to +70°C.