X9313
®
Digitally Controlled Potentiometer (XDCP™)
Data Sheet
January 15, 2008
FN8177.6
Linear, 32 Taps, 3 Wire Interface, Terminal
Voltages ± V
Features
CC
• Solid-state potentiometer
• 3-wire serial interface
• 32 wiper tap points
The Intersil X9313 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.
- Wiper position stored in nonvolatile memory and
recalled on power-up
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.
• 31 resistive elements
- Temperature compensated
- End-to-end resistance range ±20%
- Terminal voltages, -V
to +V
CC
CC
• Low power CMOS
- V
CC
= 3V or 5V
- Active current, 3mA max.
- Standby current, 500µA max.
The device can be used as a three-terminal potentiometer or
as a two-terminal variable resistor in a wide variety of
applications including:
• High reliability
- Endurance, 100,000 data changes per bit
- Register data retention, 100 years
• Control
• R
TOTAL
values = 1kΩ, 10kΩ, 50kΩ
• Parameter adjustments
• Signal processing
• Packages
- 8 Ld SOIC, 8 Ld MSOP and 8 Ld PDIP
• Pb-free available (RoHS compliant)
Block Diagram
DECODER
31
5-BIT
UP/DOWN
COUNTER
U/D
INC
CS
R /V
H
H
V
(SUPPLY VOLTAGE)
CC
30
29
28
R /V
H
H
UP/DOWN
(U/D)
5-BIT
NONVOLATILE
MEMORY
CONTROL
AND
MEMORY
ONE OF
INCREMENT
(INC)
R
/V
W
W
THIRTY-TWO
OUTPUTS
TRANSFER
GATES
RESISTOR
ARRAY
ACTIVE
AT A
TIME
DEVICE SELECT
(CS)
R /V
L
L
2
STORE AND
RECALL
CONTROL
CIRCUITRY
V
(GROUND)
SS
1
0
V
V
CC
SS
GENERAL
R /V
L
L
/V
R
W
W
DETAILED
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
1
XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005, 2006, 2008. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.