AD9262/AD9267 are not recommended for new designs with no replacements proposal. What would you recommend as CTSD ADC with similar performance?
Not Recommended for New Designs
The AD9262 is a dual, 16-bit analog-to-digital converter (ADC) based on a continuous time sigma-delta (S-?) architecture that achieves -87 dB of dynamic...
AD9262 on Analog.com
The AD9650 would be a suitable replacement since it can achieve low level SNR performance of 83 dBFS @ 100 MSPS (or -160 dBFS/Hz NSD) with spurious below -100 dBFS for baseband signals. If one operates the AD9650 with higher oversampling ratio to reduce anti-aliasing requirements, then decimate in the FPGA is required to reduced data rate to a level that the AD9262 would have provided. Regards.