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ADC reference voltage

ADC reference voltage

2005-06-07 by tasking12

Hi all,

does anyone know has ADC of LPC210x a one internal reference
or use analog 3.3V as reference.

In other words is the ADC result depend on effektiv voltage
on the analog 3.3V pad?

Thanks

Re: ADC reference voltage

2005-06-07 by Karl Olsen

--- In lpc2000@yahoogroups.com, "tasking12" <ymonyak@l...> wrote:

> does anyone know has ADC of LPC210x a one internal reference
> or use analog 3.3V as reference.
> 
> In other words is the ADC result depend on effektiv voltage
> on the analog 3.3V pad?

The LPC2104, 2105, 2106 don't have an A/D converter.  The A/D
converter of all the other LPC2000 variants uses the V3A pin voltage, 
nominally 3.3V, as reference - they don't have a built-in reference.

Karl Olsen

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