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屬于集成電路（IC） > 數(shù)字電位計。瑞薩科技有限公司制造生產的ISL22316WFRT10Z數(shù)字電位計數(shù)字電位器是一系列集成電路器件，可提供類似于傳統(tǒng)機械電位器或變阻器的可調節(jié)電阻，但通過電子信號而非機械輸入來進行控制。雖然這些器件的電阻可耗散的電能相對有限，但其電子控制能力有助于小型化、自動化和遠程控制信號級模擬電路，而這些電路本來可能會使用機械電位器。