English
Language : 

X9241A_15 Datasheet, PDF (1/17 Pages) Intersil Corporation – Non-Volatile/Low Power/2-Wire/64 Taps
Data Sheet
X9241A
Quad Digital Controlled Potentionmeters (XDCP™)
August 17, 2015
FN8164.7
Non-Volatile/Low Power/2-Wire/64 Taps
The X9241A integrates four digitally controlled
potentiometers (XDCP) on a monolithic CMOS integrated
microcircuit.
The digitally controlled potentiometer is implemented using
63 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 2-wire bus interface. Each
potentiometer has associated with it a volatile Wiper Counter
Register (WCR) and 4 nonvolatile Data Registers
(DR0:DR3) 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 through the switches. Power up
recalls the contents of 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.
Features
• Four potentiometers in one package
• 2-wire serial interface
• Register oriented format
- Direct read/write/transfer of wiper positions
- Store as many as four positions per potentiometer
• Terminal Voltages: +5V, -3.0V
• Cascade resistor arrays
• Low power CMOS
• High Reliability
- Endurance–100,000 data changes per bit per register
- Register data retention–100 years
• 16-bytes of nonvolatile memory
• 3 resistor array values
- 2k10k50kor combination
- Cascadable for values of 4kto 200k
• Resolution: 64 taps each pot
• 20 Ld plastic DIP, 20 Ld TSSOP and 20 Ld SOIC
packages
• Pb-free available (RoHS compliant)
Block Diagram
VCC
VSS
SCL
SDA
A0
A1
A2
A3
INTERFACE
AND
CONTROL
CIRCUITRY
8
DATA
R0 R1
R2 R3
WIPER
COUNTER
REGISTER
(WCR)
VH0/RH0
VL0/RL0
VW0/RW0
R0 R1
R2 R3
WIPER
COUNTER
REGISTER
(WCR)
REGISTER
ARRAY
POT 2
VH2/
RH2
VL2/RL2
VW2/RW2
R0 R1
R2 R3
WIPER
COUNTER
REGISTER
(WCR)
REGISTER
ARRAY
POT 1
VH1/RH1
VL1/RL1
VW1/RW1
R0 R1
R2 R3
WIPER
COUNTER
REGISTER
(WCR)
REGISTER
ARRAY
POT 3
VH3/RH3
VL3/RL3
VW3/RW3
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2005, 2006, 2007, 2015. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.