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Anonymous
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Oct 23, 2013
07:31 AM
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Oct 23, 2013
07:31 AM
It is possible to route VSSA to a pin. Creator doesn't complain.
Picture is in the attachment.
But when I am connecting it with a load, it breaks down!
VSSA is suddenly at around -200 mV under GND!
Why?
Do I have to use a special pin and not the high impedance analog?
Or do I have to use an Opamp as follower?
regards willi
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PSoC 5LP
5 Replies
Anonymous
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Oct 23, 2013
07:54 AM
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Oct 23, 2013
07:54 AM
Hi Der_Willi
Tell me why connect the load to the VSSA?
I can't quite understand what you want to do.
As you know, VSSA must be connect to the Ground.
Please, do not be made to mention
Tell me why connect the load to the VSSA?
I can't quite understand what you want to do.
As you know, VSSA must be connect to the Ground.
Please, do not be made to mention
Anonymous
Not applicable
Oct 23, 2013
08:06 AM
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Oct 23, 2013
08:06 AM
I want to bring out analog GND of PSoC to a sensor!
I heard that GND on PCB and in PSoC are a bit different.
Or am I wrong?
Oct 23, 2013
08:13 AM
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Oct 23, 2013
08:13 AM
From the datasheet -
Note The Vref component is not intended to source or sink current. It has low drive strength. If
high drive strength is needed, buffer the Vref with an Opamp or PGA component.
Regards, Dana.
Oct 23, 2013
08:21 AM
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Oct 23, 2013
08:21 AM
Vssa is pinned out on the package.
Oct 23, 2013
08:23 AM
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Oct 23, 2013
08:23 AM