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X9110TV14 Datasheet(PDF) 1 Page - Xicor Inc. |
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X9110TV14 Datasheet(HTML) 1 Page - Xicor Inc. |
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1 / 21 page  REV 1.1.4 11/13/00 Characteristics subject to change without notice. 1 of 21 www.xicor.com X9110 Single Digitally-Controlled (XDCP™) Potentiometer FEATURES • 1024 Resistor Taps – 10-Bit Resolution • SPI Serial Interface for write, read, and transfer operations of the potentiometer • Wiper Resistance, 40 Ω Typical @ 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 • System VCC: 2.7V to 5.5V Operation • Analog V+/V-: -5V to +5V • 100K Ω End to End Resistance • 100 yr. Data Retention • Endurance: 100, 000 data changes per bit per register • 14-Lead TSSOP, xx-Lead XBGA • Dual Supply Version of the X9111 • Low Power CMOS DESCRIPTION The X9110 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 SPI bus interface. The potentiometer has associated with it a volatile Wiper Counter Register (WCR) and 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. Dual Supply / Low Power / 1024-tap / SPI bus APPLICATION NOTES AND DEVELOPMENT SYSTEM A V A I L A B L E AN99 • AN115 • AN124 •AN133 • AN134 • AN135 FUNCTIONAL DIAGRAM RH RL Bus RW Interface & Control POT VCC VSS SPI Bus Address Data Status Write Read Wiper 1024-taps Transfer NC NC 100K Ω Power On Recall Wiper Counter Register (WCR) Data Registers (DR0-DR3) Control Interface V+ V- Preliminary Information |
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