In front of the a / d converter in an analog conversion system is usually located a sample - and - hold circuit 在模拟量转换系统中在模/数转换器的前端通常都会有一个采样-保持电路。
( 4 ) design an output board to process the result data , transfer digital data out and realize digital to analog conversion . ( 5 ) debug and improve on the system hardware ( 4 )以一片adsp21160m和一片ep1k100qc208为核心,设计输出板电路,完成数据对齐、求模和数据向下一级的输出,并产生模拟输出。