ADS7280: 正负量程问题

请问这款芯片是不是只能处理正信号呢？看手册是0~Vref的量程，是不是说，就算给到带有负的信号，ADC本身也不能处理，无法输出负的代码，也不能在程序中判断AD前级输入的是正还是负信号？

Links：

是的，只能处理正的。如果处理负信号，需要添加额外电路，比如运放等。

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li tang：

您好，是不是说就算加了运放或额外电路，但是到AD里必须是正的。但是，如果需求是需要在程序里判断前级信号是正是负，是实现不了的，AD只能输出正代码，无法判断出，最初输入的是正信号还是负信号？

,

Links：

是的

TRANSLATE with x

English

Arabic
Hebrew
Polish

Bulgarian
Hindi
Portuguese

Catalan
Hmong Daw
Romanian

Chinese Simplified
Hungarian
Russian

Chinese Traditional
Indonesian
Slovak

Czech
Italian
Slovenian

Danish
Japanese
Spanish

Dutch
Klingon
Swedish

English
Korean
Thai

Estonian
Latvian
Turkish

Finnish
Lithuanian
Ukrainian

French
Malay
Urdu

German
Maltese
Vietnamese

Greek
Norwegian
Welsh

Haitian Creole
Persian

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COPY THE URL BELOW

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li tang：

谢谢了