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X93254 Datasheet, PDF (1/10 Pages) Intersil Corporation – Dual Digitally Controlled Potentiometers | |||
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Data Sheet
March 1, 2005
X93254
FN8186.0
Dual Digitally Controlled Potentiometers
(XDCPsâ¢)
FEATURES
⢠Dual solid-state potentiometers
⢠Independent Up/Down interfaces
⢠32 wiper tap points per potentiometer
âWiper position stored in nonvolatile memory
and recalled on power-up
⢠31 resistive elements per potentiometer
âTemperature compensated
âMaximum resistance tolerance of ± 30%
âTerminal voltage, 0 to VCC
⢠Low power CMOS
âVCC = 3V±10%
âActive current, 250µA max
âStandby current, 1µA max
⢠High reliability
âEndurance 200,000 data changes per bit
âRegister data retention, 100 years
⢠RTOTAL value = 50kâ¦
⢠14-lead TSSOP package
DESCRIPTION
The Intersil X93254 is a dual digitally controlled poten-
tiometer (XDCP). The device consists of two resistor
arrays, wiper switches, a control section, and nonvola-
tile memory. The wiper positions are controlled by indi-
vidual Up/Down interfaces.
A potentiometer is implemented by a resistor array
composed of 31 resistive elements and a wiper switch-
ing network. The position of each wiper element is
controlled by a set of independent CS, U/D, and INC
inputs. The position of the wiper can be stored in non-
volatile memory and then be recalled upon a subse-
quent power-up operation.
Each potentiometer is connected as a two-terminal
variable resistor and can be used in a wide variety of
applications including:
â Bias and Gain control
â LCD Contrast Adjustment
BLOCK DIAGRAM
Up/Down
(U/D1)
Increment
(INC1)
Device Select
(CS1)
Up/Down
(U/D2)
Increment
(INC2)
Device Select
(CS2)
VCC (Supply Voltage)
30K
30K
Control
and
Memory
Control
and
Memory
RH1
RL1
RH2
RL2
VSS (Ground)
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-352-6832 | 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.
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