[Solved] Which of the following is the correct way to place a guard trace for a sensitive analog signal? - Ans: Place a grounded trace directly adjacent to the signal trace | PCB Design

PCB Design - Advanced Routing Techniques

Which of the following is the correct way to place a guard trace for a sensitive analog signal?

APlace a grounded trace directly adjacent to the signal trace

BPlace a power trace adjacent to the signal trace

CPlace the guard trace on a different PCB layer far from the signal trace

DPlace the guard trace only at the start of the signal trace

Step-by-Step Solution

Solution:

Step 1: Identify proper guard trace placement
Guard traces must be placed directly next to the sensitive signal and connected to ground to shield it effectively.
Step 2: Evaluate options
Only Place a grounded trace directly adjacent to the signal trace correctly places a grounded trace adjacent to the signal trace, which is the standard practice.
Final Answer:
Place a grounded trace directly adjacent to the signal trace -> Option A
Quick Check:
Guard trace placement = Adjacent grounded trace [OK]

Quick Trick: Guard traces must be grounded and adjacent to signals [OK]

Common Mistakes:

MISTAKES

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Which of the following is the correct way to place a guard trace for a sensitive analog signal?