This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Part Number: ADS4245-EP
I am using ADS4245-EP.
I programmed ADC for both Serial DDR LVDS and Parallel Mode but in both the cases ADC sample data is same.
I am using Sampling clock of 100MHz LVPECL. At present R_C_R filter is unmounted,as It was damping the signal (was not getting enough amplitude at the ADC input).
Input termination is 100E with Bandpass filter of 60MHz, BW 10MHz
Captured data when plotted in FPGA chipscop-pro.
1) For Input 50MHz, 1Vpp - Output was Varying amplitude of Triangular wave.
2) For frequency less than 50MHz, Ex Sine 40MHz or 35MHz expected plot was Sine. But observed plot was kind of modulated op.
3) For frequencies even smaller, 20 to 35 MHz sine/square the output samples was just toggling between almost 0 to Fullscale.
I am not able to conclude the reason.
Can you help in this?
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to Wade VonBergen:
Schematic is attached,
I have not read registers from serial port.
There is confusion with Data Format Offset binary which is MSB and LSB bits. As it is not mentioned Clearly in Datasheet.
In reply to Amit Jagtap:
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.