The AD5255 is a 3-channel digital potentiometer with nonvolatile memory. It features dual 512-position and single 128-position channels, offering 25kΩ or 250kΩ full-scale resistance. It has a low temperature coefficient, nonvolatile memory, linear increment/decrement, and I2C-compatible serial interface. The AD5255 is suitable for applications such as mechanical potentiometer replacement, LED brightness adjustment, and programmable gain and offset control.
The AD5255 is a 3-channel digitally controlled variable resistor (RDAC) available in a 24-lead TSSOP package. It provides two dual 512-position channels and one single 128-position channel, offering full-scale resistances of either 25 kΩ or 250 kΩ with 1% channel-to-channel matching tolerance.
The device features a standard I²C-compatible serial interface for wiper programming, EEPROM reading, and writing. It includes 256 bytes of general-purpose user EEPROM and 11 bytes of RDAC-specific user EEPROM to retain settings during power cycles. The AD5255 operates on single-supply voltages from 2.7 V to 5.5 V or dual supplies from ±2.25 V to ±2.75 V over an industrial temperature range of -40°C to +85°C.
| Package type | 24-lead TSSOP |
|---|---|
| Operating temperature range (Industrial) | -40°C to +85°C |
| Dual-supply voltage range | +2.25 V to +2.75 V / -2.25 V to -2.75 V |
| EEPROM capacity (General-purpose) | 256 bytes |
| EEPROM capacity (RDAC) | 11 bytes |
| Endurance (cycles) | 100 kcycles qualified |
Yes, it includes 256 bytes of general-purpose user EEPROM and 11 bytes of RDAC user EEPROM.
The device is available in a 24-lead TSSOP package.