Part Number	Replacement	Explanation

Description

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The DS4303 is a nonvolatile (NV) electronically programmable voltage reference. The reference voltage is programmed in-circuit during factory calibration/programming. Programming the reference voltage, V_OUT, is as simple as applying the desired voltage on V_IN and toggling the adjust pin (ADJ-bar) to lock the V_OUT voltage level indefinitely, even if the device is power cycled. The DS4303 replaces current cumbersome factory adjustment arrangements with a low-cost solution that can be adjusted using automated techniques. In addition, the DS4303 has the ability to be readjusted after the unit has been fully assembled and tested. This results in a much more flexible manufacturing arrangement, lower inventory costs, and a quicker time-to-market.

DS4303, DS4303K: Typical Operating Circuit Enlarge+

Key Features

Precise Electronically Adjustable Voltage Reference

Enables Automated Factory Trimming of Devices Needing Voltage Adjustment

Can be Adjusted to Within ±1mV

Wide Adjustable Output Voltage Range Within 300mV of the Supply Rails

Low Temperature Coefficient

±1mA of Output-Current Drive

NV Memory Stores the Voltage Indefinitely

Output Short-Circuit Protection

Low Cost

Low Power Consumption

2.4V to 3.6V Single-Supply Operation

Small 5-Lead SOT23 Package

Applications/Uses

• Bias Adjusting
• Factory-Calibrated Equipment
• Offset Nulling
• Power Amplifiers
• Power-Supply Calibration
• Pressure Bridges
• Threshold Setting