描述 Description

The Intersil X9318 is a digitally controlled potentiometer (XDCP). The device consists of a resistor array, wiper switches, a control section, and nonvolatile memory. The wiper position is controlled by a 3-wire interface. The potentiometer is implemented by a resistor array composed of 99 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 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. The device can be used as a three-terminal potentiometer for voltage control or as a two-terminal variable resistor for current control in a wide variety of applications.

特性 Features

? Solid-state potentiometer
? 3-wire serial interface
? Terminal voltage, 0 to +8V
? 100 wiper tap points
? Wiper position stored in nonvolatile memory and recalled on power-up
? 99 resistive elements
? Temperature compensated
? End to end resistance range ± 20%
? Low power CMOS
? VCC = 5V
? Active current, 3mA max.
? Standby current, 1mA max.
? High reliability
? Endurance, 100,000 data changes per bit
? Register data retention, 100 years
? RTOTAL value = 10k?
? Packages
? 8 Ld SOIC and DIP
? Pb-free plus anneal available (RoHS compliant)

應(yīng)用 Application

? LCD bias control
? DC bias adjustment
? Gain and offset trim
? Laser diode bias control
? Voltage regulator output control