Intersil X9261TS24Z-2.7T1

Description
The X9261 is a single-supply, low-power, 256-tap, SPI bus-controlled digital potentiometer (XDCP) that integrates two separate potentiometers on a monolithic CMOS integrated circuit. The digital controlled potentiometer is implemented using 255 resistive elements in a series array. Between each element are tap points connected to the wiper terminal through switches. The position of the wiper on the array is controlled by the user through the SPI bus interface. Each potentiometer has associated with it a volatile Wiper Counter Register (WCR) and 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. Powerup recalls the contents of the default Data Register (DRO) to the WCR.

Features
Dual-Two Separate Potentiometers
256 Resistor Taps/pot-0.4% Resolution
SPI Serial Interface for Write, Read, and Transfer Operations of the Potentiometer Single Supply Device.
Wiper Resistance, 100Ω typical @ Vcc = 5V
4 Nonvolatile Data Registers for Each Potentiometer. Nonvolatile Storage of Multiple Wiper Positions
Power-on Recall Loads Saved Wiper Position on Power-up.
Standby Current < 5μA Max
50k/100k Versions of End to End Resistance
100 yr. Data Retention
Endurance: 100,000 Data Changes per Bit per Register
24 LD SOIC, 24 Ld TSSOP
Low Power CMOS
Power Supply Vcc = 5V ±10%
Pb-Free Plus Anneal Available (RoHS Compliant)

Applications
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.