MAX187是一个具有串行接口的12位A／D转换器。设计精巧，工作速度快。小巧的封装体积适合在传感器中使用。本文介绍了该芯片的功能、操作时序。最后给出了应用实例和C51源程序。-MAX187 serial interface is a 12-bit A/D converter. Compact design, to work fast. Small package sizes suitable for use in sensors. This article describes the functions of the chip, the operation timing. Finally, application examples and the C51 source.