The application is an Ultra Wide-Band Direct Conversion Receiver (400MHz-6GHz) for a Spectrum Analyzer utilizing the ADL5380 and AD9262.
The datasheet for ADL5380 states it's Image Rejection (worst-case) is -46 dB @ 3.6GHz.
1) I am interested in knowing how much the AD9262's QEC algorithms help improve the Image Rejection / Distortion caused by I/Q imbalance and DC offset?
2) Is the QEC (if enabled) automatically done or does it require calibration from known RF inputs?
3) Worst case convergence time/number of samples of the QEC?
Requirement we are attempting to meet SFDR of >80dBc.
We have the capability to do this in DSP however, we are hoping that the AD9262 removes that design effort.