DS4303K

Overview

The DS4303K is a nonvolatile, electronically programmable voltage reference featuring sample-and-hold and infinite-hold capabilities. It accepts an analog input voltage and utilizes an internal 12-bit DAC to reproduce this voltage at the output. The device stores the encoded output value in EEPROM for nonvolatile retention. Key electrical parameters include an adjustable output range of 0.3V to 3.3V, a maximum output current of 1mA, and a supply current of 1.6mA. It operates within a supply voltage window of 2.4V to 3.6V. The component exhibits a tolerance of ±0.03%, a temperature coefficient of 62ppm/°C, and noise levels of 200µVp-p (0.1Hz to 10Hz) and 26µVp-p (10Hz to 10kHz).

Feature Summary

• Integrates a 12-bit digital-to-analog converter (DAC) to reconstruct and buffer the sampled analog input voltage.
• Features nonvolatile EEPROM storage that retains the encoded output voltage data without external power.
• Provides an internally generated low-temperature-coefficient reference buffered by a full-swing operational amplifier.

Applications

• Automated factory calibration systems requiring precise voltage setting.
• LDMOS RF power amplifier bias circuits with temperature compensation.
• Systems needing nonvolatile analog reference values stored on-chip.

Procurement Notes

Verify the specific suffix 'K' against the manufacturer's official documentation to confirm package type and availability status. Ensure the design supports the required 2.4V to 3.6V supply range and that the input signal remains stable during the programming update cycle to guarantee accurate voltage reproduction.

Selection Notes

Select this component when a nonvolatile, adjustable voltage reference is required that eliminates the need for external storage or complex calibration logic. It is suitable for applications where the reference voltage must be set once and retained indefinitely. Consider the 62ppm/°C temperature coefficient and ±0.03% tolerance against system accuracy requirements.

Part Context

The DS4303 series belongs to the family of electronically programmable voltage references designed for automated manufacturing environments. These devices simplify calibration by allowing the system to store the exact required reference voltage directly into the chip's memory, ensuring consistency across production batches without relying on discrete resistor networks.

Replacement Considerations

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