概览
简介
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
- 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 = 10kΩ
- Packages
- 8 Ld SOIC and DIP
- Pb-free plus anneal available (RoHS compliant)
产品对比
应用
应用
- LCD bias control
- DC bias adjustment
- Gain and offset trim
- Laser diode bias control
- Voltage regulator output control
设计和开发
软件与工具
模型
ECAD 模块
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
![Diagram of ECAD Models](/themes/idt8/images/ecad-models.jpg)