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PICList Thread
'voltage level conversion'
1999\04\02@070439 by pic

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<DIV><FONT color=#000000 size=2>I need to convert levels of 0-5 volts from pic
to 0-9 volts.</FONT></DIV>

<DIV><FONT color=#000000 size=2>Is there any Ic to do this?</FONT></DIV>

<DIV><FONT color=#000000 size=2>My first idea was to use 4049 or 4050.
</FONT></DIV>

<DIV><FONT color=#000000 size=2>Pic is supplied from 5 volts 4049 from 9
volts.</FONT></DIV>

<DIV><FONT color=#000000 size=2>In this case level conversion is done but 4049
consumes great current (100 times or more) comparing to normal situation when
input levels are zero or near power supply. My application consumes less than
2mA. When I use 4049 or 4050 to make level conversion current rises to near
20mA.</FONT></DIV>

<DIV><FONT color=#000000 size=2>I tried to supply pic 16f84 from 9volts.In this
case it worked but it is far too high according to microchip specifications.
</FONT></DIV>

<DIV><FONT color=#000000 size=2></FONT>&nbsp;</DIV>

<DIV><FONT color=#000000 size=2>Michal Gluszczak<BR>Studio7<BR>E-Mail: <A
href="spam_OUTstudio7TakeThisOuTspamfengshui.pl">.....studio7KILLspamspam@spam@fengshui.pl</A><BR><A
href="http://www.fengshui.pl/studio7">http://www.fengshui.pl/studio7</A><BR>tel
+48 602 623 301<BR>Slubica Dobra 2<BR>96 311 Skuly<BR>POLAND</FONT></DIV>
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1999\04\02@075518 by DAZLOGAN

picon face
Why dont you just use an op-amp in non-inverting mode with a gain of 1.8 ???

Use a rail-to-rail op-amp such as the OP-184 (single) and connect it to 9V or
higher.

Darren

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