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Re: 12f685的AD采样基准电压的问题??
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版主
 
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基本上 Vref+ 是要穩壓的，如果 +Vref 接在Vdd，那 Vdd 最好是穩壓的。
雜訊干擾，注意一下數位的地線電流回路不要經過 Analog 的地線，以免造成地線的干擾。還有取樣時間要足夠，太短會不準。
發表於: 2008/8/6 14:21
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12f685的AD采样基准电压的问题??
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新會員
 
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我用12F685,Vref直接用的VDD,
那么VDD是否要加稳压电路呢??? 怎么采的值误差比较大!!!!!
發表於: 2008/8/6 8:59
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