Linked Questions

1 vote
0 answers
70 views

USB C 2.0 Receptacle shield connection [duplicate]

I want to know if I should also connect the shield pin (Pin S1) in my schematic to GND or should I leave it not connected?
JoeyB's user avatar
  • 2,361
47 votes
8 answers
38k views

USB Shield. To ground or not to ground?

I have been given a device at work to do some testing on. Basically an IC is becoming obsolete so I need to test a replacement part. Upon redoing the ESD checks, the device failed. I checked the ...
MCG's user avatar
  • 12k
6 votes
5 answers
6k views

USB micro B receptacle has 6 mounting tabs. How many do I actually need to ground?

This USB micro B has 6 mounting tabs. If I ground none or only 1 of them, will it ruin the signal? There is a pad for the signal ground that is separate from the mounting tabs. Fyi USB 2.0 has a max ...
AlcubierreDrive's user avatar
7 votes
2 answers
8k views

How to correctly connect a USB shield on a PCB

I have designed a simple PCB on EasyEDA; I am using USB 3.0 as a convenient means of providing power, ground and taking outputs from the magnet sensors (connected to the PCB) which will be routed to ...
StefanGE's user avatar
1 vote
1 answer
7k views

Why is the usb shield always tied to ground (GND pin)?

The shielding on a cable is to avoid interference from the outside world however it is always tied directly to the GND pin. Not inside the cable itself but inside a device. Every single device I take ...
Codebeat's user avatar
  • 1,346
3 votes
1 answer
4k views

Power selection circuit for USB or DC Jack - both at 5V

I am designing a new board, where I need to detect if the DC input jack for powering the board has been plugged and then disconnect the USB power supply. I also need to detect it with the uC in order ...
sanotronics's user avatar
3 votes
1 answer
3k views

How do I deal with multiple, separate shields?

With HDMI or USB3.0/3.1, a cable assembly, in addition to the main braided shield, has multiple separate shields for each differential pair, here an example of a USB3.0 cable: Image source The inner ...
iFreilicht's user avatar
8 votes
1 answer
2k views

Proper shielding techniques for chassis grounded equipment located 30 feet apart

I am just hoping to get some best practices out of this discussion: I have two pieces of equipment that are located about 30 feet apart and bolted to a metal frame (chassis ground). They interface ...
Peter's user avatar
  • 350
2 votes
1 answer
1k views

Connecting the Shield of a strain gage cable connector to PCB with ADC

I have a half-bridge strain gage sensor (pre-assembled product) with a 30cm cable, which I am trying to interface with my PCB containing a 24-bit ADC. The connector at the cable end toward the ADC (i....
boardbite's user avatar
  • 4,922
4 votes
2 answers
2k views

Where to connect shield and ferrites in PCB with isolated planes

I have a device which has two sections of the PCB completely isolated form each other, but connected by an isolator IC (PN: ????). I think I need to shield the whole device for reducing EMI because ...
zud's user avatar
  • 1,856
1 vote
1 answer
524 views

USB shield for analog and digital ground?

I'm new to Mixed-signal design and I'm having trouble deciding how to connect my digital and analog ground. I'm doing a 4 layer design, so I have a split ground plane. As I understand, since I'm ...
DCrown's user avatar
  • 45
0 votes
1 answer
659 views

How can I ground the external shield of the USB cable?

Currently, we're trying to carry out electrophysiological recordings from the mouse brain using Open Ephys acquisition box and a silicon probe, and we are suffering from severe noise in probe signals. ...
Kouichi C. Nakamura's user avatar
1 vote
1 answer
289 views

Is it a good idea to connect the mounting connectors of a USB port?

I have designed multiple small PCBs for personal projects, and have used USB ports many times for an output. I have always wondered if it is a good idea to connect the two mounting holes for the USB ...
Benjamin Owen's user avatar
1 vote
1 answer
382 views

How to shield a battery powered instrumentation with USB interface?

I would like to ask for advice on shielding the following setup. I have a measurement target sitting inside a Faraday cage, connected through a shielded cable to a measurement circuit. The cable ...
rob's user avatar
  • 13
2 votes
1 answer
189 views

Atmega32u - Ground in bus powered configuration

The Datasheet provides an example configuration for when the device is powered from the bus, and shows the bus Vss connected to ...
Tyzoid's user avatar
  • 123

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