Datasheet

1
®
FN8222.3
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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| Intersil (and design) is a registered trademark of Intersil Americas Inc.
XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005, 2006, 2009. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
X9C102, X9C103, X9C104, X9C503
Digitally Controlled Potentiometer
(XDCP™)
The X9C102, X9C103, X9C104, X9C503 are Intersils’
digitally controlled (XDCP) potentiometers. The device
consists of a resistor array, wiper switches, a control section,
and non-volatile memory. The wiper position is controlled by
a three-wire interface.
The potentiometer is implemented by a resistor array
composed of 99 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 non-volatile
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 ranging from control to signal processing to
parameter adjustment.
Pinout
X9C102, X9C103, X9C104, X9C503
(8 LD SOIC, 8 LD PDIP)
TOP VIEW
Features
• Solid-State Potentiometer
• Three-Wire Serial Interface
• 100 Wiper Tap Points
- Wiper Position Stored in Non-volatile Memory and
Recalled on Power-up
• 99 Resistive Elements
- Temperature Compensated
- End-to-End Resistance, ±20%
- Terminal Voltages, ±5V
• Low Power CMOS
-V
CC
= 5V
- Active Current, 3mA max.
- Standby Current, 750µA max.
• High Reliability
- Endurance, 100,000 Data Changes per Bit
- Register Data Retention, 100 years
• X9C102 = 1kΩ
• X9C103 = 10kΩ
• X9C503 = 50kΩ
• X9C104 = 100kΩ
• Packages
- 8 Ld SOIC
- 8 Ld PDIP
• Pb-Free Available (RoHS Compliant)
Block Diagram
V
CC
CS
V
L
/R
L
V
W
/R
W
INC
U/D
V
H
/R
H
V
SS
1
2
3
4
8
7
6
5
7-BIT
UP/DOWN
COUNTER
7-BIT
NON-VOLATILE
MEMORY
STORE AND
RECALL
CONTROL
CIRCUITRY
ONE
OF
HUNDRED
DECODER
RESISTOR
ARRAY
R
L
/V
L
R
W
/V
W
R
H/
V
H
U/D
INC
CS
TRANSFER
V
CC
ONE-
GATES
99
98
97
96
2
1
0
GND
UP/DOWN
(INC
)INCREMENT
DEVICE
(U/D
)
(CS
)
V
CC
(SUPPLY VOLTAGE)
V
SS
(GROUND)
CONTROL
AND
MEMORY
GENERAL
V
H
/R
H
R
W
/V
W
V
L
/R
L
SELECT
DETAILED
Data Sheet July 20, 2009