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Anonymous
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Jan 22, 2012
10:36 PM
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Jan 22, 2012
10:36 PM
I downloaded DMA DAC training code from the site. Direct output from the VDAC contains "switching" noise of the DAC. A simple low-pass filter is added to remove the noise.
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PSoC 3
5 Replies
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Anonymous
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Jan 22, 2012
10:37 PM
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Jan 22, 2012
10:37 PM
Anonymous
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Jan 22, 2012
11:13 PM
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Jan 22, 2012
11:13 PM
Panson thanks for sharing this with the rest of the community.
Anonymous
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Jul 29, 2015
01:22 AM
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Jul 29, 2015
01:22 AM
Hi,
Thanks for sharing!
The noise you got was 80KHz?
I am getting ~ 50Hz according to the oscilloscope
Jul 29, 2015
02:30 AM
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Jul 29, 2015
02:30 AM
If you are getting power line noise your grounds to scope not right. The principle
noise seen in the Vdacout is relatively high (to 50 Hz) switching noise coupled
on chip and external by stray C.
Depending on what you are doing you may have to float scope ground. See attached.
Regards, Dana.
Jul 29, 2015
03:16 AM
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Jul 29, 2015
03:16 AM
Take a look at this discussion on power line interference -
Regards, Dana.