Questions tagged [differential]
Differential refers to any kind of signaling where the signal information is carried by two or more paths and both are required to properly reconstruct the signal. For example, USB D+ and D-
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Difference between differential op amp and comparator
What is the difference between a differential op amp and a comparator? I know a comparator can only give me two values (the supply values).
The differential op amp amplifies the difference between ...
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How do I lay out PCB traces for a given "differential impedance"
This is an attempt to craft a good general question and answer for a topic that's been asked before, but only in specific situations.
Could you describe what I need to know, prior to laying out a PCB ...
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How do I measure differential signals (like RS-485 or DMX) on an oscilloscope?
I've encountered differential signals in a few places, such as a differential output audio amplifier and now in a project working with DMX which is similar to RS-485. (Here's a similar question about ...
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Difference between natural response and forced response?
Reference
Second post on EdaBoard.com
Time response of a system is the time evolution of the variables. In
circuits, this would be the waveforms of voltage and current versus
time.
...
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USB signal routing - Swap data lines using vias?
I'm making my second USB design, but the D+/D- pins on the MCU (atemga16u2) aren't in the right order for the micro B connector. What's the best practice for routing these to go the right way? My ...
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Length Matching Differential Pairs
I am routing a PCB with an Ethernet connection and I am having a bit of trouble deciding on how best to route the TX and RX differential pairs. I have done the impedance calculations to figure out the ...
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Efficiency of obtaining differential signalling from a single-ended manufactured transducers
This will be a conceptual question. I'm sometimes dealing with data-acquisition of transducers, like strain gauges, accelerometers ect. sort of sensors.
Most of these sensors have their own precision ...
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Battery monitor for a camper van electrical system
As one of my first DIY projects, I'm going to build a battery monitor for the DC battery/solar/inverter system in my camper van.
The van has 440 Ah of lead acid batteries and DC currents up to 200A ...
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How critical is the layout of USB data lines / how does my layout look?
I'm laying out the USB data lines on my board at the moment, and I'm just trying to get an idea of how well off my design is gonna fare. Here are the particulars:
4 layer board (from the top: signal,...
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Ground connection in differential signals
Do I need a ground connection when connecting differential signals between two systems?
I was thinking this should not be needed, but how will common mode voltage at the receiving end behaves? ...
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How does the resistor at the tail act as a current source in a differential pair?
Here is a version of differential pair:
I can understand the working principle of differential pair above. When Ic1 increases Ic2 decreases that's the thing. And for that to happen the tail current ...
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Purpose of split termination in differential pairs
Can anyone tell me what the purpose of split termination is in a differential pair?
If you look at the LVDS article on Wikipedia, you'll see the 100 Ohm termination resistor in parallel across the two ...
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Why the common-mode gain of the differential pair is almost zero?
If you think of a better title, please do edit or let me know to edit, but this is how I thought I could word the question.
I am finding difficulty in understanding how a differential pair exactly ...
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Question about differential signals as input of an operational amplifier
I'm studying the circuits which are used to implement operational amplifiers. For example, I've studied the two stages amplifier (in which the first stage is a differential amplifier with differential ...
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Differential pair biasing by current sources
I'm having a problem understanding of how can a current be injected into emitter and pulled into collector via base, using only current sources at emitters and collectors of differential pair and not ...
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