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

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 contents of the WR control the position of the wiper. At power up, the device recalls the contents of the DCP’s IVR to the WR.

Features

? Precision Digitally Controlled Potentiometer

- 99 Typical Accuracy Of Resistance Over Operational Conditions

- Zero-Compensated Wiper Resistance

? Integrated Digitally Controlled Potentiometer

- 128-Tap Positions

- I2C Serial Interface

- Pin Selectable Slave Address

- 10kΩ, 50kΩ and 100kΩ Total Resistance

- Monotonic Over-Temperature

- Non-Volatile EEPROM Storage of Wiper Position

- 0 to VCC Terminal Voltage

? Single 2.7V to 5.5V Supply

? High Reliability

- 50 Years Retention @ ≤ +55°C

- 15 Years Retention @ +125°C

- 1,000,000 Cycles Endurance

? 3mmx3mm Thin DFN Package – 0.75mm Max Thickness, 0.65mm Pitch

? Pb-Free (RoHS Compliant)

Applications

? Setting Precise Current Values for DC Margining and Backlight Control

? Replaces Complex Compensation Circuitry That Stores Values in Look-up Tables Needed for Precise Resistor Setting

? Setting Precise Resistance Values for Test and Measurement Circuits

? Adjust Specific Resistances in Analog Circuits

? Precise Calibration and Fine Tune-Up

ISL22317WFRTZ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(chǎn)的ISL22317WFRTZ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(jī)械電位器或變阻器的可調(diào)節(jié)電阻，但通過電子信號而非機(jī)械輸入來進(jìn)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(yuǎn)程控制信號級模擬電路，而這些電路本來可能會使用機(jī)械電位器。