March 1, 2005
Dual Digitally Controlled Potentiometers
• Dual solid-state potentiometers
• Independent Up/Down interfaces
• 32 wiper tap points per potentiometer
—Wiper position stored in nonvolatile memory
and recalled on power-up
• 31 resistive elements per potentiometer
—Maximum resistance tolerance of ± 30%
—Terminal voltage, 0 to VCC
• Low power CMOS
—VCC = 3V±10%
—Active current, 250µA max
—Standby current, 1µA max
• High reliability
—Endurance 200,000 data changes per bit
—Register data retention, 100 years
• RTOTAL value = 50kΩ
• 14-lead TSSOP package
The Intersil X93254 is a dual digitally controlled poten-
tiometer (XDCP). The device consists of two resistor
arrays, wiper switches, a control section, and nonvola-
tile memory. The wiper positions are controlled by indi-
vidual Up/Down interfaces.
A potentiometer is implemented by a resistor array
composed of 31 resistive elements and a wiper switch-
ing network. The position of each wiper element is
controlled by a set of independent CS, U/D, and INC
inputs. The position of the wiper can be stored in non-
volatile memory and then be recalled upon a subse-
quent power-up operation.
Each potentiometer is connected as a two-terminal
variable resistor and can be used in a wide variety of
– Bias and Gain control
– LCD Contrast Adjustment
VCC (Supply Voltage)
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-352-6832 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.