Our customer evaluate AD9375 EVB + Aria 10 .
Evaluating TX performance with PA,DPD off,
SYNCOUT_B is from HI to Low, when change TXATT to 0dBFS from -2dBFS with 0dBFS digital input.
TXATT at -2 dBFS or less is normal operation.
What is happening ?
In the datasheet @ AD9375 Rev. 0 Page 10, following noted.
8 Note that the input signal power limit does not correspond to 0 dBFS at the digital output because of the nature of the continuous time Σ-Δ ADCs.
Unlike the hard clipping characteristic of pipeline ADCs, these converters exhibit a soft overload behavior when the input approaches the maximum level.
What is the " a soft overload behavior " ?
But we do not understand why require to reset the link with SYNCOUT_B ?
Please advices to us !
Hi Vinod - san,
Thank you for very useful replly！
Our customer checked the power supply line again.
Then, when setting to the DAC FS output,
they confirmed that the power line was unstable !