hallovipin
Member level 1
Hi,
I am designing a mixed signal PCB. I have to sample an analog signal with an ADC and send samples to FPGA for processing. I read a lot about mixed signal PCB layout guidelines on internet and came out with a power supply and grounding scheme. Can you please check and tell
whether my layout (attached below) will be good enough to prevent high frequency digital currents from the digital ground plane to corrupt sensitive analog signals over analog ground plane.
I have made sure:
1. No trace crosses the split (MOT) between digital and analog ground planes.
2. There is no secondary ground plane and chassis contact point except at the input supply point.
I have one doubt:
Should I put input supply connector (+12V, Chassis ground) on digital ground side or analog ground side?
Thanx.
-Vipin
I am designing a mixed signal PCB. I have to sample an analog signal with an ADC and send samples to FPGA for processing. I read a lot about mixed signal PCB layout guidelines on internet and came out with a power supply and grounding scheme. Can you please check and tell
whether my layout (attached below) will be good enough to prevent high frequency digital currents from the digital ground plane to corrupt sensitive analog signals over analog ground plane.
I have made sure:
1. No trace crosses the split (MOT) between digital and analog ground planes.
2. There is no secondary ground plane and chassis contact point except at the input supply point.
I have one doubt:
Should I put input supply connector (+12V, Chassis ground) on digital ground side or analog ground side?
Thanx.
-Vipin