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</o:shapelayout></xml><![endif]--></head><body lang=FR-CA link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoPlainText><span lang=EN-CA>Hi all,<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-CA>I’m looking for a fast and accurate voltage follower circuit.<br>There are plenty of them on the web to build but they all<br>suffer of inaccuracy and lag on the final DC output (final stage of low pass to smooth off the incoming peaks).<br>The incoming voltage will be a varying 0 to +/-5v peak.<br>I thought about implementing a solution using a small PIC with ADC/DAC<br>but even if these micros are very cheap this solution would be overkill.. would it be ?<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-CA>So far the available circuits have too much lag on their DC output.<br>(The envelope takes too much time to get back to zero after a fast incoming peak)<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-CA>Any known & reliable circuits ?<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-CA>JP<o:p></o:p></span></p></div></body></html>