摘要
通过对美国TI公司推出的24位高精度A/D转换器ADS1255的实验研究,给出了ADS1255实现23位ENOB的硬件测量电路、软件设计,并利用电路内部噪声的测试方法对ADS1255进行测试,结果表明ADS1255在单端、差分输入时的有效精度分别达到了22.87、22.85位。文末给出了提高ADS1255精度的一些设计要点。
Based on experimental study of A/D convertor ADS1255 with high-accuracy of 24-bit produced by Texas Instruments,the paper presents a design of hardware circuits and software design to realize 23-Bit ENOB. ADS1255 was tested by the method of testing internal circuit noise,and the result show that the accuracy was up to 22.87 ENOB in single-ended input while 22.85 ENOB in differential input. Some design points that improve the accuracy of ADS1255 were offered at the end of the paper.
出处
《自动化与仪表》
北大核心
2014年第3期52-55,共4页
Automation & Instrumentation
基金
国家杰出青年科学基金(41025015)
四川省科技支撑计划项目(2013SZ0168)
四川省教育厅科研项目(13ZB0059)
地质灾害防治国家重点实验室基金项目(SKLGP2010Z002)
关键词
ADS1255
ENOB
精度
A
D转换
ADS 1255
effective number of bits （ENOB）
accuracy
A/D convertor （ ADC ）
