X9C102, X9C103, X9C104, X9C503
®
Data Sheet
September 19, 2005
FN8222.1
DESCRIPTION
Digitally Controlled Potentiometer
(XDCP™)
The X9Cxxx are Intersil digitally controlled (XDCP)
potentiometers. The device consists of a resistor
array, wiper switches, a control section, and nonvola-
tile memory. The wiper position is controlled by a
three-wire interface.
FEATURES
• Solid-state potentiometer
• 3-wire serial interface
• 100 wiper tap points
—Wiper position stored in nonvolatile memory
and recalled on power-up
• 99 resistive elements
—Temperature compensated
—End to end resistance, ±20%
—Terminal voltages, ±5V
• Low power CMOS
The potentiometer is implemented by a resistor array
composed of 99 resistive elements and a wiper switch-
ing 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.
—VCC = 5V
—Active current, 3mA max.
—Standby current, 750µA max.
• High reliability
The device can be used as a three-terminal potentiom-
eter or as a two-terminal variable resistor in a wide
variety of applications including:
—Endurance, 100,000 data changes per bit
—Register data retention, 100 years
• X9C102 = 1kΩ
• X9C103 = 10kΩ
• X9C503 = 50kΩ
– control
– parameter adjustments
– signal processing
• X9C104 = 100kΩ
• Packages
—8-lead SOIC and DIP
• Pb-free plus anneal available (RoHS compliant)
BLOCK DIAGRAM
U/D
INC
CS
7-Bit
RH/VH
99
98
97
96
Up/Down
Counter
VCC (Supply Voltage)
Up/Down
(U/D)
7-Bit
Nonvolatile
Memory
VH/RH
One
of
Control
and
Memory
Increment
(INC)
RW/VW
One-
Hundred
Decoder
Resistor
Array
Transfer
Gates
Device
(CS)
Select
VL/RL
2
1
0
Store and
Recall
Control
Circuitry
VSS (Ground)
VCC
GND
General
RL/VL
RW/VW
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.
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.
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