Single Digitally Controlled Potentiometer (XDCP™) Low Noise, Low Power I2C™ Bus, 128 Taps

The ISL22316 integrates a single digitally controlled potentiometer (DCP) 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 wipers are 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 contents 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

• 128 resistor taps

• I2C serial interface

- Two address pins, up to four devices/bus

• Non-volatile storage of wiper position

• Wiper resistance: 70Ω typical @ VCC = 3.3V

• Shutdown mode

• Shutdown current 5µA max

• Power supply: 2.7V to 5.5V

• 50kΩor 10kΩ total resistance

• High reliability

- Endurance: 1,000,000 data changes per bit per register

- Register data retention: 50 years @ T ≤ +55°C

• 10 Ld MSOP or 10 Ld TDFN package

• Pb-free (RoHS compliant)

ISL22316WFRT10Z属于集成电路（IC） > 数字电位计。瑞萨科技有限公司制造生产的ISL22316WFRT10Z数字电位计数字电位器是一系列集成电路器件，可提供类似于传统机械电位器或变阻器的可调节电阻，但通过电子信号而非机械输入来进行控制。虽然这些器件的电阻可耗散的电能相对有限，但其电子控制能力有助于小型化、自动化和远程控制信号级模拟电路，而这些电路本来可能会使用机械电位器。