Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
No that is the wrong question for a designer. The datasheets define those answers.
The right question is to say “For this purpose and output function I need this characteristic. So define your “must have” sources or “givens, and output response.
Then define what is the problem.(s)...
Sorry TL;DR your diagrams
Please show your assumptions. I do see a contradiction.
What does you logic suggest for Agnd current effects using the Avdd cap on Dgnd ? ( low AC current and only low DC current ??)
Let's tell Microchip how to correct their logic diagram.
They suggest it is sometimes...
The reason is in order to have an accurate Ground for the ADC, there must be one and only one point of reference for ground from which all return currents flow independently of this measurement. It is commonly called a Star-ground as this point is the centre of the star. It may be supplied by...
What is the speed of light? 3e8 m/s = or 3e5 m/ms in air approx.
What distance is required to delay 1 ms on a common dielectric medium? = 200 km or 195 kilometers
What makes you think this is possible to transmit > 1MHz this distance or even with an LC simulation when you have been shown that...
BTW camera shots are perfect with a cardboard hood over the display to block FL ceiling lights.
We used a black cube hood attached to camera with Polaroids in our day. Even a pc. of cardboard would work for you.
I can't seem to find it yet either. I think their search algorithm is much worse...
Thank you for the high quality print screen images.
What is the scale> V/div, dB/div MHz/div?
What are the levels of noise floor, spurious levels in 1st photo, frequency harmonic spacing? Noise source?
The photos should tell a story with all this, but they don't since every FFT data is the same...
These can be independently controlled if done in this order.
1. Frequency between 355 Hz and 3 kHz
2. Duty cycle between 10% and 90%.
3. Amplitude between 80 mV and 2V
Not stated is the DC output or if the units are +/- Vpk, Vp-p or 0~Vpk
Start by measuring your source for SNR, calibrate it. Then measure noise floor of each stage , BW and SNR.
Don't leave a bad photo for us to interpret your settings for noise floor < scan BW (linear/log etc) with useful markers.
There are many reasons for your noise but not enough info to...
oops of course that is correct.
2.6 million sec/mo * 1ppm = 2.6 seconds / month is what I meant for a conversion factor.
These are tuning fork MEMS and tuning to this nominal error would require a 1~5 pF trim cap. and ultrastable reference counter.
20 ppm is pretty good and requires...
no
I don't know about 450 kHz but 20A per phase is not outrageous. It may not be the most efficient so a u-Fan is needed.
<=50 kHz is recommended for high C, low RdsOn unless GaN is SiC FETs are used.
WZ6020 controllers have generated 1kW designs.
All the specs to answer you were in this comment, but you were too afraid to ask what you need to understand.
First. How fast or slow is it?
Second How accurate do you need it? Or nice to have. 1ppm is about $5 0.001 ppm is is about a hundred times more unless connected to the web.
What can...
Do you agree that the question can be improved?
False conclusions, missing data, is this real problem or a simulation
The skin depth of 0.5MHz on a printed copper trace is 100%.
After examining your plot
- the current spikes are from the capacitance ESR || RdsOn for all (I=V/R)
- the...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
