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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LTC5599: why are these baseband inputs passed through 49.9 ohms and the capacitor + SPI
I'm designing a radar transceiver board using the LTC5599. In the datasheet for the part, there is a schematic that shows the circuit configuration for the evaluation board. Here is an image of the ...
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Function generator cannot generate differential voltage?
I am using the AD620 as instrumentation amplifier to amplify the body's ECG signal. An ECG is a differential signal (measured with two electrodes) and I want a differential gain of \$G_d = 1000\$.
The ...
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Differential equation of the NPN transistor configured as a voltage divider
The mathematical model in AC of the NPN transistor is represented by the pi model which is only one resistance in parallel to the resistors of the divider and the DC source in parallel to the ...
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differential measurement vs ground
I am looking to measure an incoming V vs ground with an ADC (MCP3424 or equal). The Vin vs Gnd can be anywhere from -1.5V to +2.0VDC. I looked at using an op amp with level shift, when I came across ...
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Why am I seeing a signal on a shorted differential probe?
I am chasing the cause of some weird microcontroller resetting behaviour in a prototype robot. As part of the debugging, I decided to look at the stability of the power supply for the MCU.
I soldered ...
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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 ...
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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?
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How do non-flowing common mode or bias currents cause common mode range to exceed/float?
Below is a very simplistic view of differential ended inputs of a data-acquisition channel's inAmp which measures a floating battery voltage V. To make concepts and explanations simpler I use two ...
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Display port eye diagram evaluation
I was testing my display port diagram, all 4 lines.
The first three look good, the 4th line looks like it has only one signal (not differential.)
My question:
Is the 4th line okey to be like this. (...
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surface/external edge coupled microstrip vs (internal) asymmetric edge coupled microstrip
In the process of determining the track width/separation of differential pairs for a board design
that needs to route usb2, pcie(90R) , gigabit ethernet(100R), CSI/DSI(100R), HDMI
im looking a a four ...
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How to find the differential equation of the current i₁?
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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What do you connect to IN+ and IN- for ADC differential input configuration?
I was trying to understand how to read analog inputs on a Raspberry Pi. I found this video post and I think I understood how it works.
This video uses a potentiometer and read its analog outputs ...
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Which is preferred over differential pairs: trombones or sawtooths?
I have been told that trombones are much better to use than sawtooths, even if sawtooths may be prefered in some certians scenarios.
Here I have added trombones to the differential pairs. If I had ...
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Distortion in a negative channel of the differential amplifier THS4505
I designed a single-ended to differential signal amplifier using a tool provided by Texas Instruments:
The source signal passes through a voltage follower (OPA810IDBVR), so the output resistance ...
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CAN bus accidentally swapped TX and RX is it possible to solve (in firmware) without board rework
I am interfacing an isolated can transceiver with my microcontroller. My schematic is given below.
Accidently TXD is connected to RXD of microcontroller and RXD is connected to TXD of the ...
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