一种高性能16位A/D转换器

A High Performance 16Bit AnalogtoDigital Converter

用一块双极ＩＣ芯片和一块ＣＭＯＳＩＣ芯片实现了一种高性能１６位Ａ／Ｄ转换器，详细讨论了该转换器的内部结构和逻辑控制。此Ａ／Ｄ转换器的最大转换时间为１７μｓ，时钟频率可高达１．４ＭＨｚ。此外，还可用其实现１６位及１６位以下分辨率的模／数转换，当用作１２位Ａ／Ｄ转换器时，转换时间为１２μｓ。

A 16bit high performance A/D converter has been realized using a bipolar IC and a CMOS chip. The internal structure and logic control in the converter are discussed in detail. A maximum conversion time of 17 μs and a clock frequency up to 1.4 MHz have achieved for the device. The A/D converter can also realize analogtodigital conversion for 16bit and below. When it is used as a 12bit A/D converter, the conversion time is 12μs.