X9118

Dual Supply/Low Power/1024-Tap/2-Wire Bus Single Digitally-Controlled (XDCP™) Potentiometer

Product Status: Mass Production

OVERVIEW

The X9118 is 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 2-wire bus interface. The potentiometer has associated with it a volatile Wiper Counter Register (WCR) and a 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 resistors in a wide variety of applications including control, parameter adjustments, and signal processing.

KEY FEATURES

  • 1024 resistor taps – 10-bit resolution
  • 2-wire serial interface for write, read and transfer operations of the potentiometer
  • Wiper resistance, 40Ω typical @ 5V
  • Four non-volatile data registers for each potentiometer
  • Non-volatile storage of multiple wiper positions
  • Power on recall: Loads saved wiper position on power-up
  • Standby current < 15µA Max
  • System VCC: 2.7V to 5.5V operation
  • Analog V+/V-: -5V to +5V
  • 100kΩ end-to-end resistance
  • Endurance: 100,000 data changes per bit per register
  • 100 years data retention
  • 14 Ld TSSOP
  • Low power CMOS
  • Pb-free (RoHS compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
X9118
Basic Information
生产状态
Mass Production
器件/通道数量
1
抽头数量
1024
内存类型
Nonvolatile
总线/输出接口
2-Wire
阻抗选项 (kΩ)
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
3 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)
40
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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