All Questions
Tagged with differential signal
39
questions
0
votes
1
answer
96
views
How to calculate a differential + common mode LPF circuit?
I'm trying to validate my understanding of a differential + common mode LPF circuit using the AK4499EX datasheet (019001308-E-00 2022/07 version, p. 47). It presents the following circuit:
and its ...
5
votes
5
answers
978
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Is the voltage on the negative of a differential pair actually below the ground voltage used to generate the signals?
Apologies if it’s obvious but I always hear that differential pairs have a negative and positive waveform (one on each line) that’s opposite. Now I get that you could choose whatever value or point “...
- 667
6
votes
2
answers
946
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What is the difference between PN- and PM- Differential pairs?
I am looking in the past recent weeks in a lot of datasheets and I see PM labels for LVDS (Low voltage differential signals) or generally Differential pairs on the Block Diagram. Altium would ask me ...
- 96
1
vote
1
answer
72
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Will a pair of identical conductors in the form of identical waves that are 180 degrees out of phase cancel each other out completely? [duplicate]
Since identical waveforms that are 180 degrees out of phase will cancel each other out completely, does that mean a pair of identical conductors in the form of identical waves that are 180 degrees out ...
- 11
0
votes
2
answers
94
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Multiple conductors used for the same signal
I've inherited a design that has a pair of PCBs mated with two-row mezzanine connectors (0.5mm pitch, 2.5mm mated height)
There are two differential pairs that travel through the connectors (RX and TX)...
- 1,364
1
vote
2
answers
160
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Line termination for single-ended to fully-differential conversion
I am trying to convert a single-ended signal from a sensor to a differential one by using THS4500 from TI. The output of the sensor goes through a buffer before being connected to the fully ...
- 21
0
votes
2
answers
407
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Read 4wire pressure transducer via a differential amplifier
I have been trying to read a 4wire pressure transducer (M3021-000005-01KPG) with a microcontroller, but problems keep arising. First of all, I realized that the signal (0-100 mV) is differential, ...
0
votes
1
answer
237
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LvPECL TX and LVDS RX
I have a quick sanity check question because it seems too good to be true.
If I have a LvPECL signal that I want to receive, I can just use a LVDS receiver (422/485 specifically) right? From reading ...
- 111
1
vote
1
answer
41
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Differential signalling with negative feedback
Does differential signalling always comes hand to hand with a negative feedback circuit?Else the 1s and 0s would be the same!because if we have ground in the inverting pin then the output voltage will ...
- 104
1
vote
1
answer
239
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signal types and wire types
I am trying to understand the selection criterion for choosing between a signal types and wire type out of the following:
Signal types:
Gnd reference uni-polar signal
Gnd reference bi-polar signal
...
- 907
0
votes
2
answers
363
views
Is this slide wrong about the differential signal waveform?
While learning about the differential signals I saw this youtube video. It looks like this slide does not correctly shows the voltage levels of the complementary differential signals, as I have marked ...
- 907
7
votes
1
answer
7k
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How to do low pass filtering on a differential signal?
If I have a differential signal on a pair of wires, then how would I do a simple RC low pass filter on this differential signal?
- 907
0
votes
1
answer
278
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What to do with GND of differential mode signals?
Let us say I have 2 modules. First module gives a differential signal output on a pair of wires while the second module takes the differential signal input.
When I connect the differential signal ...
- 907
1
vote
3
answers
299
views
Decode rs-422 without line receiver
I have a encoder on a dc motor that outputs it's signals as RS-422. A, ~A, B and ...
- 215
0
votes
2
answers
138
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How to make sense of the signal trace of differential signal
I am trying to understand following signal trace picture that is shown on the wiki page of 1553 Bus. The Bus has balanced differential pair wires.
As the 1553 bus has differential signals on the ...
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