EVAL-AD5228EBZ:  32-Position Manual Up/Down Control Potentiometer

The AD5228 is Analog Devices’ latest 32-step-up/step-down control digital potentiometer emulating mechanical potenti-ometer operation1. Its simple up/down control interface allows manual control with just two external pushbutton tactile switches. The AD5228 is designed with a built-in adaptive debouncer that ignores invalid bounces due to contact bounce commonly found in mechanical switches. The debouncer is adaptive, accommodating a variety of pushbutton tactile switches that generally have less than 10 ms of bounce time during contact closures. When choosing the switch, the user should consult the timing specification of the switch to ensure its suitability in an AD5228 application.

The AD5228 can increment or decrement the resistance in discrete steps or in autoscan mode. When the PU or PD button is pressed briefly (no longer than 0.6 s), the resistance of the AD5228 changes by one step. When the PU or PD button is held continuously for more than a second, the device activates the autoscan mode and changes four resistance steps per second.

The AD5228 can also be controlled digitally; its up/down features simplify microcontroller usage. The AD5228 is available in a compact thin SOT-23-8 (TSOT-8) package. The part is guaranteed to operate over the automotive temperature range of −40°C to +105°C.

The AD5228’s simple interface, small footprint, and very low cost enable it to replace mechanical potentiometers and trimmers with typically 3× improved resolution, solid-state reliability, and faster adjustment, resulting in considerable cost saving in end users’ systems.

Users who consider EEMEM potentiometers should refer to the recommendations in the Applications section

产品应用领域 Applications
EVAL-AD5228EBZ 特点
EVAL-AD5228EBZ 功能框图

AD5228 芯片订购指南
产品型号 产品状态 封装 引脚 温度范围
AD5228BUJZ10-R2 量产 8 ld TSOT 8 汽车级
AD5228BUJZ10-RL7 量产 8 ld TSOT 8 汽车级
AD5228BUJZ10-U2 量产 8 ld TSOT 8 汽车级
AD5228BUJZ100-R2 量产 8 ld TSOT 8 汽车级
AD5228BUJZ100-RL7 量产 8 ld TSOT 8 汽车级
AD5228BUJZ50-R2 量产 8 ld TSOT 8 汽车级
AD5228BUJZ50-RL7 量产 8 ld TSOT 8 汽车级
EVAL-AD5228EBZ 量产 评估板 - 汽车级
EVAL-AD5228EBZ 应用技术支持与电子电路设计开发资源下载
  1. EVAL-AD5228EBZ 评估版资料下载 . pdf
  2. Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .pdf