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X9319 Datasheet, PDF (1/10 Pages) Xicor Inc. – Digitally Controlled Potentiometer (XDCP) | |||
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Digitally Controlled Potentiometer (XDCPâ¢)
X9319
FEATURES
⢠Solid-state potentiometer
⢠3-wire serial interface
⢠Terminal voltage, 0 to +10V
⢠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 = 10K⦠and 50Kâ¦
⢠Packages
â8-lead SOIC and DIP
APPLICATIONS
⢠LCD bias control
⢠DC bias adjustment
⢠Gain and offset trim
⢠Laser diode bias control
⢠Voltage regulator output control
DESCRIPTION
The Xicor X9319 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
potentiometer for voltage control or as a two-terminal
variable resistor for current control in a wide variety of
applications.
BLOCK DIAGRAM
VCC (Supply Voltage)
Up/Down
(U/D)
Increment
(INC)
Device Select
(CS)
Control
and
Memory
VSS (Ground)
General
XDCP is a trademark of Xicor, Inc.
REV 1.7 7/10/03
U/D
INC
CS
RH
RW
RL
VVCSSC
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
www.xicor.com
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