The DS3903 contains three nonvolatile (NV) low temperature coefficient digital potentiometers, which can be accessed through a 2-wire bus. The DS3903 operates in both 3V and 5V systems, and it 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. Applications * A Small and Low-Cost Replacement for Mechanical Potentiometers * Fiber Optic Transceiver Modules * Mobile Phones and PDAs * Portable Electronics * Power Supply Calibration * Three 128-Position Linear Potentiometers (Two 10kΩ, One 100kΩ) * NV Wiper Storage * Low End-to-End Temperature Coefficient * Operates on an Industry-Standard 2-Wire Bus * Write-Protect Pin * Supply Range: 3V or 5V * Operating Temperature Range: -40°C to +85°C * Packaging: 20-Pin TSSOP https://elecena.pl/product/22302607/triple-128-position-nonvolatile-digital-potentiometer 2022-12-25 https://elecena.pl/product/22302607/triple-128-position-nonvolatile-digital-potentiometer 2025-01-17