cancel
Showing results for 
Search instead for 
Did you mean: 

PSoC 5, 3 & 1 MCU

Anonymous
Not applicable

Thanks about the Enoa parameter. The datasheets states:       

   

ENOA Noise at 1 kHz (Power = Medium, Opamp Bias = High) – 100 – nV/rt-Hz       

   

But anyway, I introduce  a sinusoid into a PGA follower  (Gain=1) and apart  I monitories the input and output in the First column and I get the image 1, obtaining the expected.       

   

Input=Output (Port 0_3)       

   

(Vsin input= 500Hz 1Vpp and 1Voffset)       

   

When I did the same in the second row I got a noisy sinusoid  output.  The output is equal to the input but the noise is much higher than the specifications told in the datasheet, so I still thinking my part is damaged.       

   

Image 3 shows the add noise is around 800KHz and 1MHz.

   

       

What do you think about it?       

   

Is damaged my part?

   

       

        By the way, I have a RC filter in my Port 0_5  board outout.       

   

Could it produce the noise?

0 Likes
Reply
1 Reply
Anonymous
Not applicable

Image2

0 Likes
Reply