Low Noise, Low Power I2C Bus, 256 Taps The ISL95810 integrates a digitally controlled potentiometer (XDCP) on a monolithic CMOS integrated circuit. The digitally controlled potentiometer is implemented with a combination of resistor elements and CMOS switches. The
position of the wiper is controlled by the user through the I2C bus interface. The potentiometer has an associated volatile Wiper Register (WR) and a non-volatile Initial Value Register (IVR), that can be directly written to and read by the user. The content of the WR controlsthe position of the wiper. At power-up the device recalls the contents of the DCP’s IVR to the WR.
Feature
• 256 resistor taps - 0.4% resolution
• I2C serial interface
• Wiper resistance: 70Ωtypical @ 3.3V
• Non-volatile storage of wiper position
• Standby current 5µA max
• Power supply: 2.7V to 5.5V
• 50kΩ, 10kΩ total resistance
• High reliability
- Endurance: 200,000 data changes per bit per register
- Register data retention: 50 years @ T ≤75°C
• 8 Ld MSOP and 8 Ld TDFN packaging
• Pb-free plus anneal available (RoHS compliant)
