Hi,
I know that this question was asked multiple times, but none of answers refer to exact circuit. Most of the answers are "SEARCH". The most precise ones refer to manufacturers sites. However, manufacturers do not provide application information. The only useful circuit I've found is http://www.cermetek.com/05/611-0137.pdf. In addition the Cemerec's DAA seems the most attractive in terms of number of pins (only 9 pins vs. 28 in Zaralink's MH88437 vs. 32 in Clare's CPC5621). Nevertheless, it requires additional OpAmp + (-5v). Where do I get -5v in digital circuit?

Is there any experienced DAA designer who can suggest which DAA to use? Despite they all are different, I can't choose between them.