Lpc2000

Sutton Mehaffey wrote:

>Tom,
>
>Since Philips isn't responding / hasn't responded to my ADC leakage
>question, as you said would probably happen, is it safe to say the
>leakage at the AD0 channels is probably 4ua max?  If so, I may put in
>extra circuitry to handle to slop in measuring battery voltage, or I
>may just add another ADC to my board.  I had an ADC on an 8051 project
>and it worked great.  I just thought that an onboard ADC would
>eliminate extra parts.  Maybe not...
>
>  
>
I really couldn't say, the spec sheet just is that vague.  My board is 
only measuring the voltage drop across a 3.3K resistor.  They are being 
used for EOL Burg (security) Zones. 

The only thing I would suggest is to get in contact with the Field Rep 
for Philips and put the question to them.  They have to get you an 
answer of some kind, that is their job to support engineers designing 
with the hardware.

TomW



-- 
Tom Walsh - WN3L - Embedded Systems Consultant
http://openhardware.net, http://cyberiansoftware.com
"Windows? No thanks, I have work to do..."
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