X9318 INTERSIL [Intersil Corporation], X9318 Datasheet

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X9318

Manufacturer Part Number
X9318
Description
Digitally Controlled Potwntiometer(XSCP)
Manufacturer
INTERSIL [Intersil Corporation]
Datasheet

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Digitally Controlled Potentiometer
(XDCP™)
FEATURES
• Solid-state potentiometer
• 3-wire serial interface
• Terminal voltage, 0 to +8V
• 100 wiper tap points
• 99 resistive elements
• Low power CMOS
• High reliability
• R
• Packages
• Pb-free plus anneal available (RoHS compliant)
APPLICATIONS
• LCD bias control
• DC bias adjustment
• Gain and offset trim
• Laser diode bias control
• Voltage regulator output control
BLOCK DIAGRAM
—Wiper position stored in nonvolatile memory
—Temperature compensated
—End to end resistance range ± 20%
—V
—Active current, 3mA max.
—Standby current, 1mA max.
—Endurance, 100,000 data changes per bit
—Register data retention, 100 years
—8 Ld SOIC and DIP
Device Select
TOTAL
and recalled on power-up
Increment
CC
Up/Down
(U/D)
(INC)
= 5V
(CS)
value = 10kΩ
V
CC
V
(Supply Voltage)
SS
General
Memory
Control
(Ground)
and
®
1
Data Sheet
R
R
R
H
W
L
U/D
INC
V
V
CS
CC
SS
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved
Nonvolatile
Up/Down
Store and
Counter
Memory
Circuitry
Control
Recall
7-Bit
DESCRIPTION
The Intersil X9318 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.
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.
The device can be used as a three-terminal potentiome-
ter for voltage control or as a two-terminal variable resis-
tor for current control in a wide variety of applications.
PIN CONFIGURATION
September 14, 2005
All other trademarks mentioned are the property of their respective owners.
Hundred
Decoder
|
One
One
of
Intersil (and design) is a registered trademark of Intersil Americas Inc.
U/D
INC
V
Detailed
R
SS
99
98
97
96
H
2
1
0
1
2
3
4
Switches
DIP/SOIC
Wiper
X9318
8
7
6
5
Resistor
Array
V
CS
R
R
CC
L
W
X9318
FN8184.1
R
R
R
H
L
W

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