Questions tagged [signal-routing]
The signal-routing tag has no usage guidance.
12 questions
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DDR4 Routing Consideration on pcb (no DIMM)
I need to route DDR4x2(3200MHz) to my FPGA.
my stackup is 12 Layers, TH Via only, and thickness of 2mm PCB.
my question regard which layer to route the FPGA to DDR4, when the two component on the TOP(...
- 471
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USB to FTDI connection
I try to connect USB 2.0 to a FTDI FT2232HL. This is my first high speed layout.
I am planning to use 2-layer board 1.6 mm. I know that I have to keep 50 Ω Z0 and 90 Ω Zdiff. However with the 2-layer ...
- 21
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3
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Importance of copper balance when dealing with small components (0402, 0201)
I usually work with big components (0805, 0603.) Now I'm trying to make a board that would use much smaller packages such as 0402 and 0201.
I know that balancing copper is relatively important to ...
- 193
3
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1
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Can I place vias under components if they're not on the pads?
There are several posts on this site (and elsewhere) discussing why, in general, vias on pads need to be avoided.
Understood. Can I place vias under components if they're not under the pad?
If so: Is ...
- 1,347
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Combining 4 Piezo Discs into One Signal
I want to work with 4 Piezo microphone discs, and would like to join the wires of them as one single signal together. Is this possible, and how can I combine 4 couples of those black/red wires of the ...
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2
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390
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Is it OK to route a signal trace under an STM32?
Is it okay to route an SWCLK signal (for programming the STM32 microcontroller) under the STM32?
I will use it only to program it whenever I need it; it is not something that is always active.
Please ...
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How does electric signal go from point A to point B in this schematic?
I am trying to figure out what path electricity takes from point A to point B.
I assume it will pass trough some transistors, but how exactly, and why?
For example, I assume it somehow gets to TCA671 -...
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2
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2
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714
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Routing USB signal on RP2040
I'm designing a makeshift mouse clicker using an RP2040 microcontroller. To keep this small and concise, I'm using a USB Type-A Male connector on the PCB to connect to the PC directly. From what I ...
- 567
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MUX between 2 digital signals so that one is normally connected and the other is in high Z without any power draw
I need a simple solution to connecting two digital signals to a single physical terminal. One should be normally connected while the other one disconnected while this does not draw any power. Only ...
- 435
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Why is ground meaningless in high speed circuits whereas more important is the path of return current?
I know everything about this topic but I don't know why ground is meaningless in high speed circuits. So basically in high speed circuits these are the factors we need to consider-:
Decoupling caps
...
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5
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Can bussed grounds in an audio patchbay create a ground loop?
I am working on a project to create a patchbay-style interface for guitar pedals, wherein a set of guitar pedals can be routed in different configurations using TT cables (like the patchbay interfaces ...
- 495
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Texas Instrument SPDT TS5A22362DGSR not swtiching properly
I have bought a couple TS5A22362DGSR from TI and it's not switching properly, I'm trying to switch between a record player and a laptop. As shown above, I want the signal from a record player, after a ...
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