
AD5258 Series
Nonvolatile, I2C®-Compatible 64-Position, Digital Potentiometer
Manufacturer: Analog Devices
Catalog
Nonvolatile, I2C®-Compatible 64-Position, Digital Potentiometer
Key Features
• Nonvolatile memory maintains wiper settings
• 64-position digital potentiometer
• Compact MSOP-10 (3 mm × 4.9 mm)
• I2C-compatible interface
• VLOGICpin 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
Description
AI
The AD5258 provides a compact, nonvolatile 3 mm × 4.9 mm packaged solution for 64-position adjustment applications. These devices perform the same electronic adjustment function as mechanical potentiometers or variable resistors, but with enhanced resolution and solid-state reliability.The wiper settings are controllable through an I2C-compatible digital interface that is also used to read back the wiper register and EEPROM content in addition, resistor tolerance is stored within EEPROM, providing an end-to-end tolerance accuracy of 0.1%. There is also a software write protection function that ensures data cannot be written to the EEPROM register.A separate VLOGICpin delivers increased interface flexibility. For users who need multiple parts on one bus, Address Bit AD0 and Address Bit AD1 allow up to four devices on the same bus.APPLICATIONSLCD panel VCOM adjustmentLCD panel brightness and contrast controlMechanical potentiometer replacement in new designsProgrammable power suppliesRF amplifier biasingAutomotive electronics adjustmentGain control and offset adjustmentFiber to the home systemsElectronics level settings