8-bit Microcontrollers中的主题 ADC converts negative voltage? https://community.nxp.com/t5/8-bit-Microcontrollers/ADC-converts-negative-voltage/m-p/215283#M18663 <HTML><HEAD></HEAD><BODY><SPAN>Does the ADC convert negative voltage? If so, where is the negative bit stored?</SPAN><BR /><SPAN>Thanks</SPAN><BR /><DIV> </DIV></BODY></HTML> Mon, 12 Jan 2009 16:29:25 GMT mmm 2009-01-12T16:29:25Z ADC converts negative voltage? https://community.nxp.com/t5/8-bit-Microcontrollers/ADC-converts-negative-voltage/m-p/215283#M18663 <HTML><HEAD></HEAD><BODY><SPAN>Does the ADC convert negative voltage? If so, where is the negative bit stored?</SPAN><BR /><SPAN>Thanks</SPAN><BR /><DIV> </DIV></BODY></HTML> Mon, 12 Jan 2009 16:29:25 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/ADC-converts-negative-voltage/m-p/215283#M18663 mmm 2009-01-12T16:29:25Z Re: ADC converts negative voltage? https://community.nxp.com/t5/8-bit-Microcontrollers/ADC-converts-negative-voltage/m-p/215284#M18664 <HTML><HEAD></HEAD><BODY>Hi Katback,<BR /><BR /><BLOCKQUOTE><HR />KATBACK wrote:<BR />Does the ADC convert negative voltage?<BR /><DIV></DIV><BR /><HR /></BLOCKQUOTE><BR />Answer: No!<BR /><BR /><BR /><BLOCKQUOTE><HR />KATBACK wrote:<BR />If so, where is the negative bit stored?<BR /><BR /><DIV></DIV><HR /></BLOCKQUOTE>Answer: Not Applicable!<BR /><BR />If you have a signal that goes positive and negative you usually use an op-amp to "level shift" it up so that the entire range of the signal now falls between 0v and Vcc<BR /><BR /><DIV></DIV></BODY></HTML> Mon, 12 Jan 2009 17:35:06 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/ADC-converts-negative-voltage/m-p/215284#M18664 peg 2009-01-12T17:35:06Z