All Questions
Tagged with differential voltage
29
questions
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31
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Max voltage per pin when measuring differential voltage with MCP3422
Im measuring differential voltage over a 1 Ohm (shunt) resistor at max 1 Amp, load voltage is 12V DC using one of the channels on MCP3422. MCP3422 is powered from 3v3 DC.
The datasheet https://ww1....
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56
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Interface Ethernet voltage
I just want to know what are the voltage levels on the Ethernet differential lines (both single ended voltage level wrto ground & different voltage between the pairs). I haven't measured the ...
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2
answers
121
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Questions regarding ESD protection
I have a couple of questions regarding the Basics of ESD.
Usually, when we employ ESD protection, say placing a TVS diode on the signal line, the other end of the ESD diode terminal:
a) Will be ...
user220456
0
votes
1
answer
160
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How to find the differential equation of the current i���?
I am trying to find the differential equation of this circuit:
I tried to use KVL at the left mesh which gave me
\$E=R\cdot i+V_c\$
From \$V_c\$ I can calculate \$i_1\$, but then I didn't know how to ...
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1
vote
1
answer
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Ethernet PHY RMII waveform without LAN Cable connected
Is the below waveform that I am getting in TX- line of Ethernet (PHY Used - LAN8700) correct? (Waveform obtained without connecting the LAN cable).
Using RMII mode in the PHY. R801 & R803 (pin 1) ...
user220456
2
votes
2
answers
286
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Ethernet differential signals
I've 2 questions on Ethernet design:
Suppose I am using a current mode Ethernet PHY which requires termination resistor of 49.9 ohms to VDD on the Ethernet differential lines.
Can I increase the ...
user220456
0
votes
3
answers
682
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Splitting of a differential signal
Can the Ethernet Tx and Rx signals (Using all 4 pairs; RGMII interface) be split into 2 so as to connect to 2 RJ-45 connectors, but only 1 will be used at a time. In general, can we split any ...
user220456
-1
votes
1
answer
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What are the voltage levels in 100 Base-TX Ethernet?
I know what the differential voltage looks like. If you measure across Tx+ and Tx- it goes from -1V to 0V to 1V and so on, but how are these voltage levels actually transmitted?
Does Tx+ go from 0V - ...
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2
votes
1
answer
714
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What voltage difference should I use for 10BASE-T?
Looking through some resources about the electronics behind ethernet, specifically the 10BASE-T standard, I've found some conflicting information about what the voltage differential should be for the ...
- 160
1
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1
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289
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How does differential mode noise and common mode noise occur
I was reading this article on common mode and differential mode noise.
But it is not mentioned anywhere on how the differential mode noise and common mode noise occurs.
From the diagram, I kind of ...
user220456
3
votes
6
answers
3k
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Differentiator and integrator - without op-amp
I am trying to understand the working and function of the integrator and differentiator circuits using op-amps.
Can someone tell me why we need to use op-amps for that function? Selecting just the ...
user220456
0
votes
1
answer
85
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Understanding specifications
I have a differential signal which I want to measure with a differential probe.
While reading the specification of the probe, I got confused with a few terms.
Can someone what the highlighted terms ...
user220456
0
votes
0
answers
90
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What are these on the probes
I am having a Lecroy differential probe and trying to measure a LVDS signal. This is the Reference Manual which I am referring to as a guide.
My differential probe tip/lead model number : DX20 - SP/SI/...
user220456
2
votes
0
answers
559
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Differential Signal Measurement best practice
I have 4 differential signal pairs (LVDS Data lines and Clock) running between my Microcontroller and TFT. There are no test points over the lines.
Can someone tell me what is the best practice and ...
user220456
0
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0
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43
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How to identify a coax connector vs twisted pair connector
I need to have a connector that will bring in COAX input to my PCB.
I have this Rosenberger HSD Connector Catalog.
On page 33, "99S12D-40MA5-y" - is this connector a twisted pair connector ...
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