Digitally controlled pot has 1% tolerance
Said to be the first low voltage digitally controlled potentiometer to feature a resistor tolerance of less than 1%, the ISL22317 from Intersil can be used as a true variable resistor, enabling standard and non standard values to be set for open loop applications.
The device reduces programming time and development costs by letting users select accurate predetermined resistor values and to use calculated resistor values in schematics. In addition, it allows the known value of one system to be used to calibrate other systems.
The device employs an i2c interface to resistor settings to be programmed in excess of 1million times in the integrated eeprom. It features zero compensated wiper resistance in rheostat mode, improving accuracy at the low tap positions.
The part is available in a 3 x3mm tdfn package
