The Intersil X93256 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 three-terminal

variable resistor and can be used in a wide variety of

applications including:

? Bias and Gain Control

? LCD Contrast Adjustment

特性 Features

? Dual solid-state potentiometers

? Individual 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 of ±25

- Terminal voltage, 0 to VCC

? Low power CMOS

- VCC = 2.7V to 5.5V.

- Active current, 200μA typical per potentiometer

- Standby current, 4μA max per potentiometer

? High reliability

- Endurance 200,000 data changes per bit

- Register data retention, 100 years

? RTOTAL value = 12.5kΩ, 50kΩ

? Package

- 14 Ld TSSOP

? Pb-free available (RoHS compliant)