LVDS stands for Low Voltage Differential Signalling. It is a popular high-speed (>100 Mb/s) way to connect chips.
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Correct place to attach shields for twisted pairs
I have two PCBs connected by a cable containing 5 sub-cables:
6v power through a custom made coaxial cable (similar to that found on laptop power supplies).
2x 100mbps LVDS through 100ohm impedance ...
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1answer
369 views
Connecting old webcam via USB
I have removed the webcam (Chicony CNF-9157) from an old laptop with the intention of connecting it up to a computer via USB. The webcam and the LCD were connected to the motherboard by LVDS. ...
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1answer
83 views
how does bi-directional differential signalling work?
I've always thought that differential signalling was a single-sender, single-receiver, one direction architecture.
However, I've come across an SDRAM chip where DQS strobes are differential and ...
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0answers
43 views
networking platform to meet the IEC61850 sampled value requirements
I've developed a linux based simulator of the IEC 61850 sampled value publisher, even with RT linux I still can't meet the requirement to publish a message with MTU =-1500, every 1uS on a PC platform. ...
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1answer
118 views
Issue with TI comparator
I'm having trouble with a comparator from TI (LMH7322). I use it in the circuit shown in the attached image "Comparator_1".
Outputs go to an FPGA. The circuit is supposed to take a single ended input ...
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1answer
237 views
Corrupt LVDS Display
We are using an Advantech PCM-3363 PC104 board to drive a NLT Technologies NL10276BC13-01C LVDS Display in an embedded device.
While everything works fine usually, the display sometimes is corrupt.
...
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1answer
188 views
Signal reflections at the driver?
This question is related to How do I use directional couplers on a differential signal?
I understand that if I have an impedance mismatch at the end of a signal cable, E.G. from a terminator which ...
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2answers
274 views
How do I use directional couplers on a differential signal?
I understand how a directional coupler can be used to measure signals travelling in one direction on a wire. What I don't understand is exactly how this would work on a differential signal, E.G. LVDS ...
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1answer
676 views
Homebrew differential 'scope probe
I may be able to get my hands on an old 600MHz LeCroy oscilloscope. However, it doesn't have any probes.
Is it feasible to make an active differential probe for it using a high-speed op-amp, like the ...
2
votes
1answer
191 views
Microstrip over power plane
I am designing a 4-layer PCB with 16 channels of LVDS (differential signalling, 480MHz). My layer stackup is Signal-GND-Power-Signal. A microstrip design for the LVDS channels is usually traces over a ...
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3answers
435 views
Measuring impedance
I am designing and building circuits which use 100Mb/s on a Low Voltage Differential Signaling (LVDS) bus. Some of these signals need to travel between PCBs on hand made cables. The problem is that I ...
