DS4305R+T&R

Overview

The DS4305R+T&R is a nonvolatile electronically programmable voltage reference in a 5-lead SOT23 package. It operates on a single supply of 4.0V to 5.5V with a maximum supply current of 2.1mA. The output voltage range spans from 0.3V up to VCC minus 0.3V, providing ±1mA of output-current drive. Factory calibration allows the output to be adjusted within ±1.5mV quantization accuracy. The device features low temperature coefficients ranging from -43 to +60 ppm/°C and includes output short-circuit protection.

Feature Summary

• Nonvolatile memory stores the calibrated voltage indefinitely without power
• Enables automated factory trimming using standard bed-of-nails test equipment
• Adjustable output voltage tracks input voltage with high precision
• Integrated output short-circuit protection safeguards the component

Applications

• Power-supply calibration
• Threshold setting
• Offset nulling
• Bias adjusting for power amplifiers
• Pressure bridges

Procurement Notes

Verify the specific ordering suffix T&R indicates tape-and-reel packaging when sourcing components. Confirm that the part number corresponds to the lead-free designation (+) as specified by the manufacturer. Ensure compatibility with the required operating temperature range of -40°C to +125°C for your application environment before finalizing procurement decisions.

Selection Notes

Select this component when precise, factory-adjustable voltage references are required for embedded systems. It serves as a direct replacement for cumbersome mechanical potentiometers or hand-selected resistor networks. The small SOT23 package and low power consumption make it suitable for space-constrained designs requiring automated manufacturing alignment capabilities.

Part Context

This component belongs to the DS4305 series of electronically programmable voltage references manufactured by Analog Devices Inc./Maxim Integrated. The series provides a cost-effective solution for replacing traditional factory adjustment arrangements. It is designed to integrate seamlessly into automated production lines, reducing inventory costs and accelerating time-to-market for calibrated electronic equipment.

Replacement Considerations

DS4305R+U

FAQ

How is the output voltage programmed?

The output voltage is programmed by applying the desired voltage to the VIN pin and toggling the ADJ pin low to initiate the self-adjust procedure, which then locks the voltage level in nonvolatile memory.

Can the voltage be readjusted after assembly?

Yes, the DS4305 can be readjusted after the unit has been fully assembled and tested, allowing for flexible manufacturing arrangements and post-production calibration.