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Issue:
A Method of Realization Slope A/D Converter by MSP430 MCU
Author(s):
GUO Zhihong
,
XU Xuncheng
,
FAN Xingmei
Pages:
47
-
50
Year:
2008
Issue:
6
Journal:
ELECTRONIC ENGINEER
Keyword:
MSP430
;
Slope A/D
;
比较模块
;
定时器
;
Abstract:
能否用最小的成本完成A/D转换有时决定着一个产品的成败.介绍了一种MSP430系列单片机运用其内部的比较模块及捕获模块实现Slope A/D的方法,这种方法原理上只需要外加一个高精度电阻和稳定性能好的电容便能实现.分析了实现该过程具体的工作原理和一些参数的计算方法,研究讨论了一些对A/D转换结果精度、稳定性等性能参数的影响因素.经过试验证明,这种原理在对转换精度要求并不十分严格的场合具有很高的选择性.
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