|
X9318 Datasheet, PDF (1/10 Pages) Intersil Corporation – Digitally Controlled Potwntiometer(XSCP) | |||
|
®
Data Sheet
September 14, 2005
X9318
FN8184.1
Digitally Controlled Potentiometer
(XDCPâ¢)
FEATURES
⢠Solid-state potentiometer
⢠3-wire serial interface
⢠Terminal voltage, 0 to +8V
⢠100 wiper tap points
âWiper position stored in nonvolatile memory
and recalled on power-up
⢠99 resistive elements
âTemperature compensated
âEnd to end resistance range ± 20%
⢠Low power CMOS
âVCC = 5V
âActive current, 3mA max.
âStandby current, 1mA max.
⢠High reliability
âEndurance, 100,000 data changes per bit
âRegister data retention, 100 years
⢠RTOTAL value = 10kâ¦
⢠Packages
â8 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
1
8
2 X9318 7
3
6
4
5
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
RH
98
97
One 96
of
One
Hundred
Decoder
2
Wiper
Switches
Resistor
Array
1
0
RL
RW
Detailed
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.
|
▷ |