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Need help for placement of different section in mixed signal PCB Design

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Ashuishere:
Hi Team, I hope you are doing well with your PCB designing, and I'm also working on a project that is BCU (BODY CONTROL UNIT) and prepared the entire schematic but worried about managing different sections, and for that I need your help to do it very smartly.


so there is main  connector

as you can see pin numbers 1 , 2, 3, and 4 are the motor pins that forward and reverse direction
and pins 5 to 11 are the adc pins and so on

So how can I handle it? Is it okay, or how can I manage it effectively because the motor and ADC digital signal are near? Or do you have any recommendation to make it safe and effective design to take care the different signals? during layout.

thm_w:
This is not an altium question, just a general design question.
Its going to depend on how sensitive your ADC is, what impedance, how high the motor currents are, etc.

You can add ground shielding between the traces and have them as far apart as possible, but if they are bundled together in a harness there will still be coupling there.

Probably best if you study existing automotive designs and see how they do it.

ahbushnell:

--- Quote from: Ashuishere on February 17, 2025, 11:24:10 am ---Hi Team, I hope you are doing well with your PCB designing, and I'm also working on a project that is BCU (BODY CONTROL UNIT) and prepared the entire schematic but worried about managing different sections, and for that I need your help to do it very smartly.


so there is main  connector

as you can see pin numbers 1 , 2, 3, and 4 are the motor pins that forward and reverse direction
and pins 5 to 11 are the adc pins and so on

So how can I handle it? Is it okay, or how can I manage it effectively because the motor and ADC digital signal are near? Or do you have any recommendation to make it safe and effective design to take care the different signals? during layout.

--- End quote ---

Is the motor control a signal or power?  Is the motor control PWM? 

Niklas:
Is the connector pinout fixed? If possible, I would have added more 0V (Gnd) pins and spread them around. Just having one single pin as reference for both power and signals is not a good idea.

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