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X9119 fiches techniques PDF

Xicor - Single Digitally-Controlled Potentiometer

Numéro de référence X9119
Description Single Digitally-Controlled Potentiometer
Fabricant Xicor 
Logo Xicor 





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X9119 fiche technique
APPLICATION NOTES AND DEVELOPMENT SYSTEM
AVAILABLE
AN99 • AN115 • AN124 •AN133 • AN134 • AN135
Single Supply / Low Power / 1024-tap / 2-Wire bus
Preliminary Information
X9119
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, 40Typical @ 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
• 100KEnd to End Resistance
• 100 yr. Data Retention
• Endurance: 100,000 Data Changes Per Bit Per
Register
• 14-Lead TSSOP, 15-Lead XBGA
• Low Power CMOS
• Single Supply version of the X9118
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.
FUNCTIONAL DIAGRAM
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
100K
1024-taps
POT
VSS NC NC
RW RL
REV 1.1.11 3/12/02
www.xicor.com
Characteristics subject to change without notice. 1 of 22

PagesPages 23
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