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TRIPLE, DIGITAL, NONVOLATILE POTENTIOMETER FROM DALLAS SEMICONDUCTOR LOWERS COST OF PC POWER SUPPLIES
DALLAS, TX-August 26, 2002-Dallas Semiconductor (NASDAQ: MXIM) introduces the DS3903 nonvolatile (NV) tri-potentiometer. The DS3903 digital potentiometer is ideal for lowering manufacturing costs and automating production calibration of high-volume power supplies used in PC and telecommunications products. The DS3903 is a low-cost replacement for mechanical potentiometers and can be implemented in applications ranging from portable electronics such as PDAs and mobile phones to fiber optics transceiver modules.
The DS3903 contains three NV low-temperature coefficient digital potentiometers that can be accessed through a 2-wire bus. It operates in both 3V and 5V systems, and features a write-protect pin that can lock the positions of the potentiometers. An address pin allows two DS3903s to be placed on the same 2-wire bus. The DS3903 provides designers with increased performance and benefits at a price lower than the closest competition. The device provides one 100k and two 10k 128-position potentiometers.
The DS3903 is available in both a space-saving 20-pin TSSOP package (173mil) and a 20-pin TSSOP tape-and-reel version. It operates from a single 2.7V to 5V power supply over the -40°C to +85°C temperature range. Prices start at $0.95 (1000–up, FOB USA).
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