摘要
为克服在A/D转换中输入电压范围窄的问题,介绍了一种采用单片机AT89C51和NE555定时器构成的A/D转换器。详细分析了其工作原理和A/D转换的特性。该A/D转换器对低频输入信号在较高电压范围内具有一定的实用价值。
Aiming at solving the problem of narrow input voltage range in A/D converter,A/D converter based on microcontroller and 555 timer was introduced. The theory and characteristics of A/D converter are analyzed.The A/D converter is of some applied value to low frequency and high voltage input signals within a wide input voltage range.
出处
《国外电子元器件》
2006年第12期18-20,共3页
International Electronic Elements
