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X9408YV24I Datasheet(PDF) 1 Page - Intersil Corporation |
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X9408YV24I Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 20 page 1 ® X9408 Low Noise/Low Power/2-Wire Bus Quad Digitally Controlled (XDCP™) Potentiometers Description The X9408 integrates four digitally controlled potentiometers (XDCP) on a monolithic CMOS integrated circuit. The digital 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 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. Power-up 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. Features • Four Potentiometers in One Package • 64 Resistor Taps per Potentiometer • 2-wire Serial Interface • Wiper Resistance, 40 Ω Typical at 5V • Four Nonvolatile Data Registers for Each Pot • Nonvolatile Storage of Wiper Position • Standby Current < 1µA max (Total Package) •VCC = 2.7V to 5.5V Operation V+ = 2.7V to 5.5V V- = -2.7V to -5.5V •10k Ω, 2.5kΩ End to End Resistances • High reliability • Endurance–100,000 Data Changes Per Bit Per Register • Register Data Retention–100 years • 24 Ld SOIC, 24 Ld TSSOP, 24 Ld PDIP Packages • Pb-Free (RoHS Compliant) Block Diagram INTERFACE AND CONTROL CIRCUITRY SCL SDA A0 A1 A2 A3 R0 R1 R2 R3 WIPER COUNTER REGISTER (WCR) RESISTOR ARRAY POT 1 VH1/RH1 VL1/RL1 R0 R1 R2 R3 WIPER COUNTER REGISTER (WCR) VH0/RH0 VL0/RL0 DATA 8 VW0/RW0 VW1/RW1 R0 R1 R2 R3 RESISTOR ARRAY VH2/RH2 VL2/RL2 VW2/RW2 R0 R1 R2 R3 RESISTOR ARRAY VH3/RH3 VL3/RL3 VW3/RW3 WIPER COUNTER REGISTER (WCR) WIPER COUNTER REGISTER (WCR) POT 3 POT 2 WP POT 0 VCC VSS V+ V- 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, 2009. All Rights Reserved All other trademarks mentioned are the property of their respective owners. Data Sheet FN8191.4 January 15, 2009 |
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