X9318 Potentiometer Datasheet

X9318 Datasheet, PDF, Equivalent


Part Number

X9318

Description

Digitally Controlled Potentiometer

Manufacture

Intersil

Total Page 10 Pages
Datasheet
Download X9318 Datasheet


X9318
®
Data Sheet
September 14, 2005
X9318
FN8184.1
Digitally Controlled Potentiometer
(XDCP™)
FEATURES
• Solid-state potentiometer
• 3-wire serial interface
• Terminal voltage, 0 to +8V
• 100 wiper tap points
—Wiper position stored in nonvolatile memory
and recalled on power-up
• 99 resistive elements
—Temperature compensated
—End to end resistance range ± 20%
• Low power CMOS
—VCC = 5V
—Active current, 3mA max.
—Standby current, 1mA max.
• High reliability
—Endurance, 100,000 data changes per bit
—Register data retention, 100 years
• RTOTAL value = 10k
• Packages
—8 Ld SOIC and DIP
• 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
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
DIP/SOIC
INC
U/D
RH
VSS
18
2 X9318 7
36
45
VCC
CS
RL
RW
BLOCK DIAGRAM
VCC (Supply Voltage)
Up/Down
(U/D)
Increment
(INC)
Device Select
(CS)
Control
and
Memory
VSS (Ground)
General
U/D
INC
CS
RH
RW
RL
VCC
VSS
Up/Down
Counter
7-Bit
Nonvolatile
Memory
Store and
Recall
Control
Circuitry
99
98
97
One 96
of
One
Hundred
Decoder
2
1
0
Wiper
Switches
Resistor
Array
Detailed
RH
RL
RW
1
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.

X9318
X9318
Ordering Information
PART NUMBER
X9318WP8
PART MARKING
X9318WP
RTOTAL (k)
10
TEMP RANGE (°C)
0 to 70
8 Ld PDIP
PACKAGE
X9318WP8I
X9318WP I
-40 to 85
8 Ld PDIP
X9318WS8*
X9318W
0 to 70
8 Ld SOIC (150 mil)
X9318WS8Z* (Note)
X9318W Z
0 to 70
8 Ld SOIC (150 mil) (Pb-free)
X9318WS8I*
X9318W I
-40 to 85
8 Ld SOIC (150 mil)
X9318WS8IZ* (Note)
X9318W Z I
-40 to 85
8 Ld SOIC (150 mil) (Pb-free)
*Add "T1" suffix for tape and reel.
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate
termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
PIN DESCRIPTIONS
DIP/SOIC
1
2
3
4
5
6
7
8
Symbol
INC
U/D
RH
VSS
RW
RL
CS
VCC
Brief Description
Increment. Toggling INC while CS is low moves the wiper either up or down.
Up/Down. The U/D input controls the direction of the wiper movement.
The high terminal is equivalent to one of the fixed terminals of a mechanical potentiometer.
Ground.
The wiper terminal is equivalent to the movable terminal of a mechanical potentiometer.
The low terminal is equivalent to one of the fixed terminals of a mechanical potentiometer.
Chip Select. The device is selected when the CS input is LOW, and de-selected when CS is high.
Supply Voltage.
2 FN8184.1
September 14, 2005


Features ® Data Sheet September 14, 2005 X9318 FN8184.1 Digitally Controlled Potenti ometer (XDCP™) FEATURES • Solid-sta te potentiometer • 3-wire serial inte rface • Terminal voltage, 0 to +8V 100 wiper tap points —Wiper positio n stored in nonvolatile memory and reca lled on power-up • 99 resistive eleme nts —Temperature compensated —End t o end resistance range ± 20% • Low p ower CMOS —VCC = 5V —Active current , 3mA max. —Standby current, 1mA max. • High reliability —Endurance, 100 ,000 data changes per bit —Register d ata retention, 100 years • RTOTAL val ue = 10kΩ • Packages —8 Ld SOIC a nd DIP • Pb-free plus anneal availabl e (RoHS compliant) APPLICATIONS • LCD bias control • DC bias adjustment Gain and offset trim • Laser diode bias control • Voltage regulator outp ut control DESCRIPTION The Intersil X9 318 is a digitally controlled potentiom eter (XDCP). The device consists of a r esistor array, wiper switches, a control section, and nonvolatile memory. The wiper position is controlled by a 3-wir.
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