LTC2357-16Production
The LTC2357-16 is a 16-bit, low noise 4-channel simultaneous sampling successive approximation register (SAR) ADC with buffered differential, wide common...
Datasheet LTC2357-16 on Analog.com
It looks like you are sending clock pulses and SDI data during the BUSY phase. (SCKO is a copy of the SCKI signal.) If CSL is low, the LTC2357 will respond to clocks even during a conversion. This is not recommended as this can corrupt the conversion result.
Thanks the issue is fxed now but the ADC is sending incorrect data. If I give a DC signal I should see same or somewhat same values over N samples but I see the returned values are different. Any pointer what might be wrong. Also I am interfacing the ADC with FPGA so any pointers on input/output delays should be used in constraints file of FPGA
This could be a noise issue. What is your signal source? Another possibility is that some interference could be corrupting the conversion. Can you provide a schematic?
