13-bit resolution STFlite29 ?

tomas2 · ‎2007-04-26

Posted on April 26, 2007 at 11:26

tomas2 · ‎2007-04-24

Posted on April 24, 2007 at 12:51

Hi all,

is it possible to activate the input voltage amplifier for just one single ADC input ?

For eg: AIN0 range 0-430mV ( 5VDD ) and the rest of AINx range 0-5V ?

BR

Tomasf

laurent239955_stm1 · ‎2007-04-24

Posted on April 24, 2007 at 13:14

Tomas,

As described in fig 49 of the datasheet, you can see that there is only one amplifier which is connected to the Analog multiplexer output.

So you must enable the amplifier thanks to the AMPSEL and configure correctly the fADC (below 2MHz) thanks to bit SPEED and SLOW before selecting the channel you want to convert. By changing the AD channel you will automatically launch a new conversion.

Hoping you will be successful with your application.

Best regards

Laurent

tomas2 · ‎2007-04-24

Posted on April 25, 2007 at 05:09

Hi Laurent,

thanks for your fast reply.

Ok - so all or nothing.

Pity.

I just needed one single ADC input in ''13-bit mode'' the rest in ''10-bit mode'' for a new application.

Take care,

Tomas

laurent239955_stm1 · ‎2007-04-25

Posted on April 25, 2007 at 13:54

Tomas,

You can manage this by software. It is a little bit more complex but not so much !

Take care too.

Laurent

tomas2 · ‎2007-04-25

Posted on April 26, 2007 at 04:51

Hi Laurent,

Aha - I am not so skilled to figure it out.

Is it possibly so that you are able to assist me ?

Take care,

Tomas

laurent239955_stm1 · ‎2007-04-26

Posted on April 26, 2007 at 11:26

Hi,

For more information you can refer to AN1830.

And if you have still issue don't hesitate to ask questions in the forum.

Best regards

Laurent