>Even 10 bits of resolution gives a LSB that is aprox 0.098 % of
>full scale. Even that is hard to get in a repeateble way.
>
>May I ask,  *what* needs a 16 bit A/D value ?
>
>Jan-Erik Svderholm.

Thanks for your input. But if it was so difficult to get repeatable result
in 10bit ADC, why would there be 24 bit ADC? made?

I have used 4andhalf digit ADCs (7135) and it has no problems of
repeatability. 7109 which is a 12 bit ADC also has no problems.



> >May I ask,  *what* needs a 16 bit A/D value ?
>
> Weighing systems, for one, especially when dollars (euros, dinars
whatever)
> are involved. Also if you need wide dynamic range (eg. hi-fi audio).
>
> The PIC14000 was a first cut attempt, if you want high resolution, use
> a delta-sigma converter with a microcontroller or use one of those other
> micros that has an on board converter (two types, both of them 8051 core).
> You can get a 24 bit converter.

>Spehro Pefhany --"it's the network..."            "The Journey is the
reward"

May I ask which one? I have used 8051 core micros, but haven't come across
one with 24 bit adc.
(Though I must confess, I haven't searched for it). I was told to use
PIC14000, so I didnot look beyond it.

Regards,

Vyas

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