X9268

Dual Digitally Controlled (XDCP™) Potentiometers

Product Status: Mass Production

OVERVIEW

The X9268 integrates 2 digitally controlled potentiometer (XDCP) on a monolithic CMOS integrated circuit.

The digital 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 2-Wire bus interface. Each potentiometer has associated with it a volatile Wiper Counter Register (WCR) and a four nonvolatile 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.

KEY FEATURES

  • Dual-Two Separate Potentiometers
  • 256 Resistor Taps/Pot-0.4% Resolution
  • 2-Wire Serial Interface for Write, Read, and Transfer Operations of the Potentiometer
  • Wiper Resistance, 100Ω typical @ V+ = 5V, V- = -5V
  • 16 Nonvolatile Data Registers for Each Potentiometer
  • Nonvolatile Storage of Multiple Wiper Positions
  • Power-on Recall. Loads Saved Wiper Position on Power-up.
  • Standby Current < 5µA Max
  • VCC: ±2.7V to ±5.5V Operation
  • 50kΩ, 100kΩ Versions of End to End Pot Resistance
  • Endurance: 100,000 Data Changes per Bit per Register
  • 100 yr. Data Retention
  • 24-Lead SOIC, 24-Lead TSSOP
  • Low Power CMOS
  • Power Supply VCC = ±2.7V to ±5.5V
    V+ = 2.7V to 5.5V
    V- = -2.7V to -5.5V
  • Pb-Free Plus Anneal Available (RoHS Compliant)

PARAMETRICS

Parameters
X9268
Basic Information
生产状态
Mass Production
器件/通道数量
2
抽头数量
256
内存类型
Nonvolatile
总线/输出接口
2-Wire
阻抗选项 (kΩ)
50, 100
供电电压Vcc (最小值) (V)
2.7
供电电压Vcc (最大值) (V)
5.5
供电电流Icc
5 µA
阻抗变化特性
Linear
VL最小终端电压
-5.5 V
VL最大终端电压
5.5 V
Wiper电流 (mA)
3
Wiper电阻 (Ω)
150
双电源范围 (V)
-2.7 to -5.5, +2.7 to +5.5
最高工作温度
85 °C
端到端温度系数 (ppm/øC)
300
中点比率温度系数
20
资质级别
Standard
供电电压Vcc范围 (V)
2.7 to 5.5
CAN 采样
YES
温度范围
-40 to +85

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