DS4303

Rev 0; 3/05 www.DataSheet4U.com Voltage Sample and Infinite Hold General Description The DS4303 is a nonvolatile (NV) sample and infinitehold adjustable voltage reference. The reference voltage is programmed in-circuit during factory calibration/ programming. Programming the reference voltage, VOUT, is as simple as applying the desired voltage on VIN and toggling the adjust pin (ADJ) to lock the VOUT 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. 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 DS4303 Applications Power-Supply Calibration Threshold Setting Offset Nulling Bias Adjusting Power Amps Pressure Bridges Factory-Calibrated Equipment Ordering Information...