Renesas Electronics X9421
The X9421 integrates a single digitally controlled potentiometer (XDCP) on a monolithic CMOS integrated circuit. The digital controlled potentiometer is implemented using 63 resistive elements in a series array. The position of the wiper on the array is controlled by the user through the SPI bus interface.| Part No. | X9421 |
|---|---|
| Datasheet | X9421 Download |
| Manufacturer |  Renesas Electronics |
| Description | Single Digitally Potentiometer |
| Buy | Stock & Price |
DESCRIPTION
Between each element are tap points connected to the wiper terminal through switches. The potentiometer has associated with it a volatile Wiper Counter Register (WCR) and a four non-volatile Data Registers that can be directly written to and read by the user. The contents of the WCR controls the position of the wiper on the resistor array though the switches. Power-up recalls the contents of the default data register (DR0) to the WCR. The XDCP can be used as a three-terminal potentiometer or as a two terminal variable resistor in a wide variety of applications including control, parameter adjustments, and signal processing. Block DiagramFEATURES
● Single Voltage Potentiometer● 64 Resistor Taps
● SPI Serial Interface for Write, Read, and Transfer Operations of the Potentiometer
● Wiper Resistance, 150 Typical at 5V
● 4 Non-Volatile Data Registers
● Non-Volatile Storage of Multiple Wiper Positions
● Power-on Recall. Loads Saved Wiper Position on Power-up.
● Standby Current < 5µA Max
● VCC : 2.7V to 5.5V Operation
● 2.5k, 10k End to End Resistance
● 100 yr.
