RPI AD/DA Extend Board SKU:EP-0022

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Revision as of 20:31, 1 August 2016 by TaterLi (talk | contribs) (Created page with "=RPI AD/DA Extend Board= ==Description== 通过PCF8591读取模拟电压的数值,并且可以驱动DAC模块,但是不能提供电流输出.可以通过Shell读取数值.测...")
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RPI AD/DA Extend Board

Description

通过PCF8591读取模拟电压的数值,并且可以驱动DAC模块,但是不能提供电流输出.可以通过Shell读取数值.测量范围从0-5V.根据环境的不同,测量范围可能有差异. 警告:因为转换速度太慢而且准确度较差,功耗较大,最差情况需要200mA,准备供应下一代产品.


Feature

1)通过I2C读取. 2)转换速度:小于1ksps 因为实在很低,不好意思说了,实际是11.1sps. 3)不带输入保护,需要注入输入范围. 4)模拟输出:250nA 不适用与驱动电路,请使用缓冲芯片进行扩大电流. 5)片上跟踪保持功能; 6)8 位逐次逼近 A/D转换; 7)Dimensions: 1.9cm × 3.35cm


Presentation



Package includes

  • 1x ...........

How to use

http://wiringpi.com/extensions/i2c-pcf8591/ 和 参照 http://www.52pi.net/forum.php?mod=viewthread&tid=813


Purchase Links

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