The Intersil X9315 is a digitally controlled potentiometer
(XDCP). The device consists of a resistor array, wiper
switches, a control section, and nonvolatile memory. The
wiper position is controlled by a 3-wire interface.
The potentiometer is implemented by a resistor array
composed of 31 resistive elements and a wiper switching
network. Between each element and at either end are tap
points accessible to the wiper terminal. The position of the
wiper element is controlled by the CS, U/D, and INC inputs.
The position of the wiper can be stored in nonvolatile
memory and then be recalled upon a subsequent power-up
operation.
The device 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
• Signal Processing

Features
• Solid-state potentiometer
• 3-wire serial interface
• 32 wiper tap points
- Wiper position stored in nonvolatile memory and
recalled on power-up
• 31 resistive elements
- Temperature compensated
- End to end resistance range ± 20%
- Terminal voltage, 0 to VCC
• Low power CMOS
- VCC = 2.7V or 5V
- Active current, 80/400µA max.
- Standby current, 5µA max.
• High reliability
- Endurance, 100,000 data changes per bit
- Register data retention, 100 years
• RTOTAL values = 10kΩ, 50kΩ, 100kΩ
• Packages
- 8 Ld SOIC, MSOP and PDIP
• Pb-free available (RoHS compliant)