X93255
Dual Digitally Controlled Potentiometers (XDCPs™)
Typical Diagram
Key Features
- Dual solid-state potentiometers
- Independent Up/Down interfaces
- 32 wiper tap points per potentiometer
- Wiper position stored in nonvolatile memory and recalled on power-up
- 31 resistive elements per potentiometer
- Temperature compensated
- Maximum resistance tolerance ± 25%
- Terminal voltage, 0 to VCC
- Low power CMOS
- VCC = 5V ± 10%
- Active current, 200µA typ.
- Standby current, 4µA max
- High reliability
- Endurance 200,000 data changes per bit
- Register data retention, 100 years
- RTOTAL value = 50kΩ
- Packages
- 14-lead TSSOP
Description
The Intersil X93255 is a dual digitally controlled potentiometer (XDCP). The device consists of two resistor arrays, wiper switches, a control section, and nonvolatile memory. The wiper positions are controlled by individual Up/Down interfaces.
A potentiometer is implemented by a resistor array composed of 31 resistive elements and a wiper switching network. The position of each wiper element is controlled by a set of independent CS, U/D, and INC inputs. The position of the wiper can be stored in nonvolatile memory and then be recalled upon a subsequent power-up operation.
Each potentiometer is connected as a two-terminal variable resistor and can be used in a wide variety of applications including:
- Bias and Gain control
- LCD Contrast Adjustment
