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Intersil Corporation - Dual Digitally Controlled Potentiometers

Numéro de référence X93255
Description Dual Digitally Controlled Potentiometers
Fabricant Intersil Corporation 
Logo Intersil Corporation 





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X93255 fiche technique
®
Data Sheet
March 4, 2005
X93255
FN8187.0
Dual Digitally Controlled Potentiometers
(XDCPs™)
FEATURES
• Dual solid-state potentiometers
• Independent Up/Down interfaces
• 32 wiper tap points per potentiometer
—Wiper position stored in nonvolatile memory
and recalled on power-up
• 31 resistive elements per potentiometer
—Temperature compensated
—Maximum resistance tolerance ± 25%
—Terminal voltage, 0 to VCC
• Low power CMOS
—VCC = 5V ± 10%
—Active current, 200µA typ.
—Standby current, 4µA max
• High reliability
—Endurance 200,000 data changes per bit
—Register data retention, 100 years
• RTOTAL value = 50k
• Packages
—14-lead TSSOP
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DESCRIPTION
The Intersil X93255 is a dual digitally controlled
potentiometer (XDCP). The device consists of two
resistor arrays, wiper switches, a control section, and
nonvolatile memory. The wiper positions are controlled
by individual Up/Down interfaces.
A potentiometer is implemented by a resistor array
composed of 31 resistive elements and a wiper switching
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 nonvolatile memory
and then be recalled upon a subsequent power-up
operation.
Each potentiometer is connected as a two-terminal
variable resistor and can be used in a wide variety of
applications including:
– bias and gain control
– LCD Contrast Adjustment
BLOCK DIAGRAM
VCC (Supply Voltage)
Up/Down
(U/D1)
Increment
(INC1)
Device Select
(CS1)
30k
30k
Control
and
Memory
RH1
RL1
RH2
Up/Down
(U/D2)
Increment
(INC2)
Control
and
Memory
RL2
Device Select
(CS2)
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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