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)