Hi Markos. Did Yoy take a look on the PIC datasheet? If you have a Voltage reference (2 pins) on the IC apart power supply, and in the datasheet is specified that can support 12 V with 5V on power supply, of course you can.
I didn´t see that PIC datasheet, but in case that you cannot use that voltage reference range, you will have to make a conditioning signal circuit with an operational amplifier. Take care to not exed the specified ranges or damage of the device may ocurr. On a simple way, if you use a couple of resistors use metal film resistor diu to the lower inductance they have compared with others. On most AD imputs its not recommended to use caps, inductors exept you have the impedances well separated. I hope this help you. Regards, Casiano. ----- Original Message ----- From: "Markos" <[EMAIL PROTECTED]> To: <sdcc-user@lists.sourceforge.net> Sent: Thursday, March 08, 2007 5:48 AM Subject: [Sdcc-user] [OT] - ADC Ideas > Hi guys, > maybe this is a little offtopic, but i'm sure you could > help me. I'm implementing a simple battery charger, and I need to > messaure voltages ranges from 0 to 12 V. > ¿Could I use the PIC integrated ADC to messaure above 5 V (provided that > I use the voltage reference pins tied to 0 and 12 V, for example)? Most > external ADC have a 0 to 5V input range.... > How would you guys solve this? Any Ideas? > > Thanks in advance. > > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share > your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Sdcc-user mailing list > Sdcc-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/sdcc-user > > __________ NOD32 1.1458 (20060324) Information __________ > > This message was checked by NOD32 antivirus system. > http://www.eset.com > > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
