AD5258

Data Sheet Nonvolatile, I2C®-Compatible 64-Position, Digital Potentiometer AD5258 FEATURES Nonvolatile memory maintains wiper settings 64-position digital potentiometer Compact MSOP-10 (3 mm × 4.9 mm) I2C-compatible interface VLOGIC pin provides increased interface flexibility End-to-end resistance 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ Resistance tolerance stored in EEPROM (0.1% accuracy) Power-on EEPROM refresh time <1 ms Software write protect command Address Decode Pin AD0 and Address Decode Pin AD1 allow four packages per bus 100-year typical data retention at 55°C Wide operating temperature −40°C to +85°C 3 V to 5 V single supply APPLICATIONS LCD panel VCOM adjustment LCD panel brightness and contrast control Mechanical potentiometer replacement in new designs Programmable power supplies RF amplifier biasing Automotive electronics adjustment Gain control and offset adjustment Fiber to the home systems Electronics level settings FUNCTIONAL BLOCK DIAGRAMS VDD VLOGIC GND SCL SDA AD0 AD1 RDAC EEPROM RDAC REGISTER RDAC I2C SERIAL INTERFACE POWERON RESET 6 DATA 6 CONTROL COMMAND DECODE LOGIC ADDRESS DECODE LOGIC CONTROL LOGIC AD5258 A W B 05029-001 VLOGIC Figure 1. Block Diagram VDD EEPROM SCL SDA AD0 AD1 I2C SERIAL INTERFACE COMMAND DECODE LOGIC ADDRESS DECODE LOGIC RDAC REGISTER AND LEVEL SHIFTER GND CONTROL LOGIC Figure 2. Block Diagram Showing Level Shifters A W B 05029-002 GENERAL DESCRIPTION The AD5258 provides a compact, nonvolatile 3 mm × 4.9 mm packaged s...