DS1804

19-5876; Rev 6/11 DS1804 Nonvolatile Trimmer Potentiometer FEATURES  Single 100-Position Taper Potentiometer  Nonvolatile (NV) On-Demand Wiper Storage  Operates from 3V or 5V Supplies  Up/Down, Increment-Controlled Interface  Available in 8-Pin (300 mils) DIP, 8-Pin (150 mils) SO, and 8-Pin (118 mils) µSOP  -40°C to +85°C Operating Temperature Range  Standard Resistance Values: – DS1804-010: 10kΩ – DS1804-050: 50kΩ – DS1804-100: 100kΩ PIN ASSIGNMENT INC 1 U/D 2 H3 GND 4 8 VCC 7 CS 6L 5W DIP (300 mils) SO (150 mils) μSOP (118 mils) PIN DESCRIPTION H - High-Terminal of Potentiometer L - Low-Terminal of Potentiometer W - Wiper of Potentiometer VCC - 3V or 5V Power Supply CS - Chip Select U/ D - Up/Down Control INC - Increment/Decrement Wiper Control GND - Ground DESCRIPTION The DS1804 NV trimmer potentiometer is a nonvolatile digital potentiometer that has 100 positions. The device provides an ideal method for low-cost trimming applications using a CPU or manual control input with minimal external circuitry. Wiper position of the DS1804 can be stored in EEPROM memory on demand. The device’s wiper position is manipulated by a three-terminal port that provides an increment/ decrement counter controlled interface. This port consists of the control inputs CS , INC , and U/ D . The DS1804 is available in three resistor grades, which include a 10kΩ, 50kΩ, and 100kΩ. The device is provided in an industrial temperature grade. Additionally, the DS1804 will operate...