ISL90728

Single Volatile 128-Tap Digitally Controlled Potentiometer (XDCP™)

Product Status: Mass Production

OVERVIEW

The Intersil ISL90727 and ISL90728 are digitally controlled potentiometers (XDCP™). Each device consists of a resistor array, wiper switches, and a control section. The wiper position is controlled by an I2 C Bus™.

The potentiometer is implemented by a resistor array composed of 127 resistive elements and a wiper switching network. Between each element and at either end are tap points accessible to the wiper terminal. The position of the wiper element is controlled by the SDA and SCL inputs.

KEY FEATURES

  • Volatile Solid-State Potentiometer
  • I2C Serial Bus Interface
  • DCP Terminal Voltage, 2.7V to 5.5V
  • Low Tempco
  • Rheostat - 45 ppm/°C Typical
  • Divider - 15 ppm/°C Typical
  • 128 Wiper Tap Points
  • Wiper Resistance 70Ω Typ at VCC = 3.3V
  • Low Power CMOS
  • Active Current, 200µA Max
  • Standby Current, 500nA Max
  • Available RTOTAL Values = 50kΩ, 10kΩ
  • Power-on Preset to Midscale
  • Packaging
  • 6 Ld SC-70
  • Pb-Free (RoHS Compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL90728
Basic Information
生产状态
Mass Production
器件/通道数量
1
抽头数量
128
内存类型
Volatile
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
0.5 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)
85
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
15
特性
Same as ISL90727 with different I2C address; RL connected to GND
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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