AK2305 Datasheet, PDF (41/43 Pages) Asahi Kasei Microsystems – Dual PCM CODEC for ISDN TERMINAL ADAPTER

ASAHI KASEI
[AK2305]
Power Supply
To attenuate the power supply noise, connect capacitors between AVDD and AVSS, and DVDD and
DVSS, as shown below.
AK2305
AVDD
C1
AVSS
+
C2
DVDD
C3
DVSS
+ _C4
C1=C3=0.1uF
C2=C4=10uF
To use the same supply for both digital and analog power supply (DVDD and AVDD), insert 10Ω resistor
between AVDD and DVDD. AVSS and DVSS must be separated on the board, and connected them at
power supply unit.
AK2305
AVDD
C1
AVSS
DVDD
C3
DVSS
+ _C2
R1
+ _C4
C1=C3=0.1uF
C2=C4=10uF
R1=10 Ohm
Ground of Power
Supply Unit
C0029-E-02
41
1999/8