I would like to use the AD9257 for my FPGA Device. From the datasheet you are saying to use one supply for analog (AVDD) and one supply for digital (DRVDD) .
Concerning the evaluation design board AD9257-65EBZ you are not providing schematics…
I'm trying to get SerDes output from a set of AD9257's on a custom PCB.
1) No shorts on any pins
2) Correct SPI data and clock (running at ~1.5MHz)
3) Correct SPI register transmission settings things such as ADC digital reset and…
We have found ADI web page for <HIGH SPEED ADC EVALUATION BOARDS>
My team is interfacing with the AD9257 and we have got the demo board, but we need to interface with a custom FPGA setup. Is there some IP already created for the AD9257 like there is for the AD9265 found in this repository?:
I‘ve had a problem using AD9257. I used it to acquire a sine wave, but the waveform will jump if the input exceed a value, as shown below.
The problem does not occur in all of the 8 channels.
I made a few test boards, and each board has different…
I have troubles with SPI communication between AD9257 demo board and a zybo board.
For example, I try to read the register 0x01(the chip ID) with this command, but as you can see the ADC doesn't answer...
We check timing spec, and it is OK.
There are three GND below in our system.
GND for the image sensor
(image sensor is CMOS with analog output)
Connection of GND is shown below.
Image sensor GND---AGND---DGND
ADC will receive the signal from the sensor.
Does GND of AD9257…
I have a question about the digital reset of AD9257.
The digital reset is the following sequence.
How long waiting time is necessary from writing 0x03 to writing 0x00?
Is waiting time of about…