The X95820 integrates two digitally controlled
potentiometers (XDCP) on a monolithic CMOS integrated
circuit.
The digitally controlled potentiometers are implemented with
a combination of resistor elements and CMOS switches. The
position of the wipers are controlled by the user through the
I
2C bus interface. Each 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 contents of the WR controls the position of the
wiper. At power up the device recalls the contents of the two
DCP’s IVR to the corresponding WRs.
The DCPs can be used as three-terminal potentiometers or
as two-terminal variable resistors in a wide variety of
applications including control, parameter adjustments, and
signal processing.

Features
• Two potentiometers in one package
• 256 resistor taps-0.4% resolution
• I2C serial interface
- Three address pins, up to eight devices/bus
• Wiper resistance: 70Ω typical @ 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: 150,000 data changes per bit per register
- Register data retention: 50 years @ T ≤ 75°C
• 14 Ld TSSOP
• Pb-free plus anneal available (RoHS compliant)