Podcast
Questions and Answers
What is the primary purpose of using Kelvin connections in electronic design?
What is the primary purpose of using Kelvin connections in electronic design?
Which of the following is a recommended approach to reduce power consumption in electronic devices?
Which of the following is a recommended approach to reduce power consumption in electronic devices?
What is the main concern when designing a PCB layout to minimize electromagnetic interference (EMI)?
What is the main concern when designing a PCB layout to minimize electromagnetic interference (EMI)?
Why is grounding an essential consideration in electronic device design?
Why is grounding an essential consideration in electronic device design?
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In analog circuit design, what is a key consideration when designing for low noise operation?
In analog circuit design, what is a key consideration when designing for low noise operation?
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When designing electronic devices, why is it important to consider reducing electromagnetic interference (EMI)?
When designing electronic devices, why is it important to consider reducing electromagnetic interference (EMI)?
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What is the primary goal of coding firmware for an electronic device?
What is the primary goal of coding firmware for an electronic device?
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When designing a PCB layout, what is the primary concern when placing components?
When designing a PCB layout, what is the primary concern when placing components?
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What is a key consideration when designing analog circuits for low noise operation?
What is a key consideration when designing analog circuits for low noise operation?
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When designing electronic devices, why is it important to consider starting the board design?
When designing electronic devices, why is it important to consider starting the board design?
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Study Notes
Design Considerations for Electronic Devices
- Grounding is the reference point of a circuit, where all other points are measured with respect to this point.
- In digital circuits and single rail analog circuits, the ground is the negative terminal of the power supply.
- In analog circuits using dual supply, the ground is the common point of the two supplies, which is accepted as the reference point (zero potential).
Grounding Rules
- Do not use the same conductor (wire or PCB trace) for small analog signal ground and power signal's ground.
- Do not use the same conductor for analog signals and digital signals.
- The analog signal ground, power ground, and digital ground should be connected at a single point (star connection).
PCB Design Considerations
- Use at least two layers board, with one of the layers designated as a ground layer.
- Take into account the manufacturer's recommendations for circuit layout.
- Follow the steps for drawing the layout:
- Give a part number (P/N) to the bare board and the board assembly.
- Define the dimensions of the board.
- Place the mounting holes.
- Place the p/n and Serial Number (S/N) markings on a suitable location on the board.
- Define the locations of the components that interface the board to other assemblies.
- Place the other components for easy routing.
- Place test pads to take measurements during the factory tests.
- Route or auto-route the traces.
- Use a bigger width trace for power connections.
- Prefer at least two layers for the board and use the bottom layer as a ground plane.
- Add sufficient numbers of vias to transfer the heat from one side to the other side for thermal planes.
Important Considerations in Designing and Manufacturing Electronic Assemblies
- The document provides brief information on electronic design for beginner-level engineers.
- It can be used by anybody interested in electronic design to start designing and manufacturing electronic assemblies.
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Description
Learn about the importance of grounding in electronic device design, including its role as a reference point in digital and analog circuits.
