AK4125XF Overview
Moreover, the book has an appendix that contains a case study.
AK4125XF Features

AK4125XF Applications
There are a lot of AKM Semiconductor Inc.
AK4125XF Audio Special Purpose applications.

High-End Audio/Sound Card for PC
Replacement of DIR1703
Other Applications Requiring S/PDIF Receiver
Audio Differential Line Drivers
Audio Mix Consoles
Distribution Amplifiers
Graphic and P arametric Equalizers
Dynamic Range Processors
Digital Effects Processors
Telecom Systems

Packaging	Tape & Reel (TR)
Part Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)