AVR-Chat

Lots of factors contribute to ADC accuracy, including (but not limited to):
power supply ripple, voltage reference (level, accuracy, short term stability, drift), internal electrical noise, external noise, load, temperature, and others.  What specific problems are you having?

Jeff Verive

   --- In AVR-Chat@yahoogroups.com, rakesh modi <get_rak20ec@...> wrote:
>
> thanks for ur reply,
> i like to tell u that i am here measuring a dc signal. so how can i get proper accuracy?
>  
> R.P.Modi
> 
> 
> 
> ----- Original Message ----
> From: Sander Pool <sander@...>
> To: AVR-Chat@yahoogroups.com
> Sent: Wednesday, 2 April, 2008 6:14:35 AM
> Subject: Re: [AVR-Chat] problem in adc accuracy
> 
> 
> Shift 2 bits maybe? Unless you meant to throw away the 2 LSBs from the 
> converter? Of course when averaging the readings you need to keep Mr 
> Nyquist in mind and make sure you're sampling fast enough for the 
> frequency domain of your signal.
> 
> Sander
> 
> BobGardner@aol. com wrote:
> >
> > Add 16 samples and right shift total 4 bits
> > ============ ========= ========= =======
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>  
> 
> 
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