中频数字接收机对ADC有很高的要求,ADC的精度和转换速率必须足够高,以实现对中频信号的采样.AD9230是12位精度、最高速率达250MSPS的ADC芯片,可为一般中频处理系统提供足够的动态性能.对AD9230的主要原理功能进行了描述,对关键管脚进行了介绍,最后给出了基于AD9230的数字中频接收机工程应用实例,为基于AD9230的中频数字接收机设计提供了参考依据.%The intermediate frequency digital receiver requires of ADC high accuracy and high rate conversion, so as to realize the intermediate frequency signal sample. The AD9230 is a 12-bit analog-to-digital converter chip, whose maximum speed is up to 250 MSPS, and can provides high enough dynamic performance for the common intermediate frequency systems. The principle and main functions of AD9230 are described. The important pins of AD9230 are introduced. The application examples of intermediate frequency digital receiver based on AD9230 are presented. This research provided a reference for design of digital intermediate frequency receivers based on AD9230.
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