AVR-Chat

If you have 10, 100 ohm resistors in series, and each is 1% tolarance, the 
tolarance of the total group is +- 10%.. That is indeed correct, and if each 
is +-10%, then the total tolerance is +-100%.. odd as it may sound. 

In this R2R circuit though, this is not a series circuit. However, without 
really taking the time to do the calculations, I would suspect a similar 
outcome. Each resistor's tolerance would contribute to the tolerance of the 
circuit as a whole in an additive or subtractive manner. 

I would agree with Thomas in this regard. 

-Micah 


On Monday 09 January 2006 2:13 pm, gtbecker@rightime.com wrote:
>  > ... Each component contributes to the overall tolerance of  the
>  > system...
>
>  I have no doubt, but the tolerances simply add?
>
>  What happens if, in this case of 16 resistors, one uses 10%-tolerance
> resistors?  The sum exceeds 100%?  Does the error of either LSB resistance
> contribute to the system error as do the MSB resistances?
>
>
>  Tom
>
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