DS1803

DS1803 Addressable Dual Digital Potentiometer www.maxim-ic.com FEATURES ƒ 3V or 5V Operation ƒ Ultra-Low Power Consumption ƒ Two Digitally Controlled, 256-Position Potentiometers ƒ 14-Pin TSSOP (173 mil) and 16-Pin SO (150 mil) Packaging Available for Surface-Mount Applications ƒ Addressable Using 3 Address Inputs ƒ 2-Wire Serial Interface ƒ Operating Temperature Range: - Industrial: -40°C to +85°C ƒ Standard Resistance Values: - DS1803-010 10kΩ - DS1803-050 50kΩ - DS1803-100 100kΩ PIN DESCRIPTION L0, L1 - Low End of Resistor H0, H1 - High End of Resistor W0,W1 - Wiper terminal of Resistor VCC - 3V/5V Power Supply Input A0, A1, A2 - Chip Select Inputs SDA - Serial Data I/O SCL - Serial Clock Input GND - Ground NC - No Connection PIN ASSIGNMENT H1 L1 W1 A2 A1 A0 GND 1 2 3 4 5 6 7 14 VCC 13 NC 12 H0 11 L0 10 W0 9 SDA 8 SCL DS1803 14-PIN TSSOP (173 MIL) H1 NC L1 W1 A2 A1 A0 GND 1 2 3 4 5 6 7 8 16 VCC 15 NC 14 H0 13 L0 12 W0 11 NC 10 SDA 9 SCL DS1803Z 16-PIN SO (150 MIL) DS1803 16-PIN DIP (300 MIL) See Mech. Drawings Section on Website DESCRIPTION The DS1803 addressable dual digital potentiometer features two independently controlled 256-position potentiometers. Device control is achieved through a 2-wire serial interface. Three address pins allow up to 8 DS1803’s to share the same 2-wire interface. The exact wiper position of each potentiometer can be written or read. The DS1803 is available in a 16-pin DIP, 16-pin SO, and 14-pin TSSOP package. The devi...