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      參數(shù)資料
      型號(hào): X9250US24-2.7
      廠商: Intersil
      文件頁數(shù): 1/20頁
      文件大小: 0K
      描述: IC DCP QUAD 50K 256TP 24SOIC
      標(biāo)準(zhǔn)包裝: 30
      系列: XDCP™
      接片: 256
      電阻(歐姆): 50k
      電路數(shù): 4
      溫度系數(shù): 標(biāo)準(zhǔn)值 ±300 ppm/°C
      存儲(chǔ)器類型: 非易失
      接口: 6 線 SPI(芯片選擇,設(shè)備位址)
      電源電壓: 2.7 V ~ 5.5 V
      工作溫度: 0°C ~ 70°C
      安裝類型: 表面貼裝
      封裝/外殼: 24-SOIC(0.295",7.50mm 寬)
      供應(yīng)商設(shè)備封裝: 24-SOIC
      包裝: 管件
      1
      X9250
      Low Noise/Low Power/SPI Bus/256 Taps
      Quad Digitally Controlled Potentiometers
      (XDCP)
      FEATURES
      Four potentiometers in one package
      256 resistor taps/pot - 0.4% resolution
      SPI serial interface
      Wiper resistance, 40
      typical @ VCC = 5V
      Four nonvolatile data registers for each pot
      Nonvolatile storage of wiper position
      Standby current < 5A max (total package)
      Power supplies
      —VCC = 2.7V to 5.5V
      —V+ = 2.7V to 5.5V
      —V– = -2.7V to -5.5V
      100k
      , 50k total pot resistance
      High reliability
      —Endurance – 100,000 data changes per bit per
      register
      —Register data retention - 100 years
      24 Ld SOIC, 24 Ld TSSOP
      Dual supply version of X9251
      Pb-free plus anneal available (RoHS compliant)
      DESCRIPTION
      The
      X9250
      integrates
      4
      digitally
      controlled
      potentiometers (XDCP) on a monolithic CMOS
      integrated circuit.
      The digitally controlled potentiometer is implemented
      using 255 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. 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 though 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.
      BLOCK DIAGRAM
      R0 R1
      R2 R3
      Wiper
      Counter
      Register
      (WCR)
      Resistor
      Array
      VH1/RH1
      VL1/RL1
      R0 R1
      R2 R3
      Wiper
      Counter
      Register
      (WCR)
      Interface
      and
      Control
      Circuitry
      CS
      SCK
      A0
      A1
      VH0/RH0
      VL0/RL0
      Data
      8
      VW0/RW0
      VW1/RW1
      SO
      SI
      R0 R1
      R2 R3
      Wiper
      Counter
      Register
      (WCR)
      Resistor
      Array
      Pot 2
      VH2/RH2
      VL2/RL2
      VW2/RW2
      R0 R1
      R2 R3
      Wiper
      Counter
      Register
      (WCR)
      Resistor
      Array
      Pot 3
      VH3/RH3
      VL3/RH3
      VW3/RW3
      Pot1
      HOLD
      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, 2006. All Rights Reserved
      All other trademarks mentioned are the property of their respective owners.
      Data Sheet
      FN8165.3
      August 29, 2006
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