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Need help to solve the problem with DAC TLV561

PLEASE READ CAREFULLY: I DO NOT ASK BIDDER TO DESIGN, IMPLEMENT ANYTHING. I just want to ask if bidder had experience of the problem I have, and know how to fix my MY DESIGN. This is less than 1 HOUR OF WORK only if you.

I have my DAC design with TLV5613CPW. THe requirement of my system, I need to generate analog data at the rate of 2Msps. The purpose of my DAC is to generate a waveform as in the image attached here. The data I send to the DAC can be like this code below:

unsigned int data_dac;

while (1){

write_to_dac(data_dac++);

}

The schematic of my design in in a file here, the PCB layout file is also here, this is a 6 layer board with separate analog and digital GND. I also have copper pour on top and bottem of the board. The output from DAC are refernece to AGND only.

But there is the problemin my design: Each time I update the DAC value, there is an over/under shoot as in the image here. I capture the signal with very shoty ground "twezer probe", and the picture from the scope is when I have the DAC out pin lif up (pin down even worst). If you know why I have this problem and you know how I can fix this problem, please help.

I only want to get help from experience electrical engineer, with very strong Analog back ground, and you had done semilar design like mine. Will not accept any paid up front. And I will pay you in full if when your help really improve my design.

Bidder have to have Skype, ability to talk on Skype, Teamviewer

PLEASE READ CAREFULLY: I DO NOT ASK BIDDER TO DESIGN, IMPLEMENT ANYTHING. I just want to ask if bidder had experience of the problem I have, and know how to fix my MY DESIGN. This is less than 1 HOUR OF WORK only if you.

Compétences : Génie Électrique, Electronique

Voir plus : top problem, paid help, need engineering, need engineer help, want electrical engineering, need electrical engineering, get help, engineer electronics, electrical design work, electrical electronics engineering, digital image data, design pcb need, ask engineer, need design engineer, top electrical engineer, solve problem, signal system, pin down, need help pcb, need engineer, rate, electronics engineer, electrical system, electrical layout, electrical electronics engineer

Concernant l'employeur :
( 0 commentaires ) Escondido (San Diego), United States

N° du projet : #2343353

3 freelance ont fait une offre moyenne de 433 $ pour ce travail

beandigital

Please see Pm

500 $ USD en 1 jour
(1 Commentaire)
3.6
hardcorefs

please see the private message

400 $ USD en 1 jour
(0 Commentaires)
0.0
jsamgeorge

Hi, Please see Private message...

400 $ USD en 10 jours
(0 Commentaires)
0.0