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X9241AYSZ Datasheet(PDF) 1 Page - Intersil Corporation |
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X9241AYSZ Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 16 page 1 ® X9241A Low Power/2-Wire Serial Bus Quad Digitally Controlled Potentiometer (XDCP™) The X9241A integrates four digitally controlled potentiometers (XDCP) on a monolithic CMOS integrated microcircuit. The digitally controlled potentiometer is implemented using 63 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. Each potentiometer has associated with it a volatile Wiper Counter Register (WCR) and 4 nonvolatile Data Registers (DR0:DR3) 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 through the switches. Power up recalls the contents of 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. Features • Four potentiometers in one package • 2-wire serial interface • Register oriented format - Direct read/write/transfer of wiper positions - Store as many as four positions per potentiometer • Terminal Voltages: +5V, -3.0V • Cascade resistor arrays • Low power CMOS • High Reliability - Endurance–100,000 data changes per bit per register - Register data retention–100 years • 16-bytes of nonvolatile memory • 3 resistor array values -2k Ω to 50kΩ mask programmable - Cascadable for values of 500 Ω to 200kΩ • Resolution: 64 taps each pot • 20 Ld plastic DIP, 20 Ld TSSOP and 20 Ld SOIC packages • Pb-free plus anneal available (RoHS compliant) Block Diagram Data 8 R1 R0 R3 R2 VH0/RH0 VL0/RL0 VW0/RW0 Wiper Counter Register (WCR) VH1/RH1 VL1/RL1 VW1/RW1 Register Array Pot 1 Wiper Counter Register (WCR) R1 R0 R3 R2 SCL SDA A0 A1 A2 A3 Interface and Control Circuitry VH2/ VL2/RL2 VW2/RW2 VH3/RH3 VL3/RL3 VW3/RW3 Register Array Pot 2 Wiper Counter Register (WCR) R1 R0 R3 R2 Register Array Pot 3 Wiper Counter Register (WCR) R1 R0 R3 R2 VCC VSS RH2 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | 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. Data Sheet FN8164.1 September 15, 2005 |
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