Hi,
I have contacted the Applications Engineer of ADN3000-06 and told me that the product is Non-disclosure Agreement (NDA) protected, that's why we haven't published the full datasheet in the public website. He also told me that we haven't characterized the low cutoff frequency of ADN3000-06 as the product was designed to support high data rate Active Optical Cable (AOC) applications. I recommend that you contact your local ADI technical support should you have more clarifications on ADN3000-06.
http://www.analog.com/en/content/technical_support_page/fca.html
Best regards,
Neil