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X9119 Datasheet, PDF (1/18 Pages) Xilinx, Inc – Single Digitally-Controlled (XDCP ™ ) Potentiometer
®
PRELIMINARY
Data Sheet
X9119
Single Supply/Low Power/1024-Tap/2-Wire Bus
September 15, 2005
FN8162.2
Single Digitally-Controlled (XDCP™)
Potentiometer
FEATURES
• 1024 Resistor Taps – 10-Bit Resolution
• 2-Wire Serial Interface for Write, Read, and
Transfer Operations of the Potentiometer
• Wiper Resistance, 40Ω Typical @ VCC = 5V
• Four Non-Volatile Data Registers
• Non-Volatile Storage of Multiple Wiper Positions
• Power-on Recall. Loads Saved Wiper Position
on Power-up.
• Standby Current < 3µA Max
• VCC: 2.7V to 5.5V Operation
• 100kΩ End to End Resistance
• 100 yr. Data Retention
• Endurance: 100,000 Data Changes Per Bit Per
Register
• 14 Ld TSSOP
• Low Power CMOS
• Single Supply Version of the X9118
• Pb-Free Plus Anneal Available (RoHS Compliant)
FUNCTIONAL DIAGRAM
DESCRIPTION
The X9119 integrates a single digitally controlled
potentiometer (XDCP) on a monolithic CMOS
integrated circuit.
The digital controlled potentiometer is implemented
using 1023 resistive elements in a series array.
Between each element are tap points connected to the
wiper terminal through switches. The position of the
wiper on the array is controlled by the user through the
2-wire bus interface. The potentiometer has
associated with it a volatile Wiper Counter Register
(WCR) and a four non-volatile Data Registers that can
be directly written to and read by the user. The
contents of the WCR controls the position of the wiper
on the resistor array though the switches. Powerup
recalls the contents of the default data register (DR0)
to the WCR.
The XDCP can be used as a three-terminal
potentiometer or as a two terminal variable resistor in
a wide variety of applications including control,
parameter adjustments, and signal processing.
VCC
RH
2-Wire
Bus
Interface
Address
Data
Status
Bus
Interface &
Control
Write
Read
Transfer
Control
Power On Recall
Wiper Counter
Register (WCR)
Data Registers
(DR0-DR3)
Wiper
100KΩ
1024-taps
POT
VSS
NC
NC
RW
RL
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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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.