X95820

Dual Digital Controlled Potentiometers (XDCP™); Low Noise/Low Power/2-Wire Bus/256 Taps

Product Status: Mass Production

OVERVIEW

The X95820 integrates two digitally controlled potentiometers (XDCP) on a monolithic CMOS integrated circuit.

The digitally controlled potentiometers are implemented with a combination of resistor elements and CMOS switches. The position of the wipers are controlled by the user through the I2 C bus interface. Each potentiometer has an associated volatile Wiper Register (WR) and a non-volatile Initial Value Register (IVR), that can be directly written to and read by the user. The contents of the WR controls the position of the wiper. At power up the device recalls the contents of the two DCP's IVR to the corresponding WRs.

The DCPs can be used as three-terminal potentiometers or as two-terminal variable resistors in a wide variety of applications including control, parameter adjustments, and signal processing.

KEY FEATURES

  • Two potentiometers in one package
  • 256 resistor taps-0.4% resolution
  • I2C serial interface
  • Three address pins, up to eight devices/bus
  • Wiper resistance: 70Ω typical @ 3.3V
  • Non-volatile storage of wiper position
  • Standby current <5µA max
  • Power supply: 2.7V to 5.5V
  • 50kΩ, 10kΩ total resistance
  • High reliability
  • Endurance: 150,000 data changes per bit per register
  • Register data retention: 50 years @ T ≤75°C
  • 14 Ld TSSOP
  • Pb-free plus anneal available (RoHS compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
X95820
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
I2C
阻抗选项 (kΩ)
10, 50
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
0 V
VL最大终端电压
5.5 V
Wiper电流 (mA)
3
Wiper电阻 (Ω)
70
双电源范围 (V)
N/A
最高工作温度
85 °C
端到端温度系数 (ppm/øC)
45
中点比率温度系数
4
特性
Dual version of ISL95810
资质级别
Standard
单电源范围 (V)
0 to 5.5
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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