11 Power Supply Recommendations
The PCM3168A requires a 5-V and 3.3-V nominal supply rail. The 3.3-V supply rail is needed for VDD1 and VDD2. The 5-V supply rail is needed for VCCAD1, VCCAD2, VCCDA1, and VCCDA2. The decoupling capacitors for the power supplies should be placed close to the device terminals.