I2C Bus, 256 Taps, 5 Bytes General Purpose Memory, Low Noise, Low Power

The ISL95811 integrates a digitally controlled potentiometer (XDCP) and non-volatile memory 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 controls the position of the wiper. At power-up the device recalls the contents of the DCP’s IVR to the WR.

Features

• 256 Resistor Taps - 0.4 Resolution

• I2C Serial Interface

• 5 General Purpose Non-Volatile Bytes

• Non-volatile Storage of Wiper Position

• Write Protection

• Wiper Resistance: 70Ω Typical @ VCC = 3.3V

• Standby Current 10µA Max

• Power Supply: 2.7V to 5.5V

• 50kΩ, 10kΩ Total Resistance

• High Reliability

- Endurance: 1,000,000 Data Changes per Bit per Register

- Register Data Retention: 50 Years @ T ≤ +55°C

• 8 Ld MSOP and 8 Ld TDFN Packaging

• Pb-Free (RoHS compliant)