[AK4675]
SRC CHARACTERISTICS
(Ta=25°C; AVDD=PVDD=SAVDD=DVDD=TVDD2=TVDD3=3.3V; VSS1=VSS2=VSS3=VSS4=0V;
Signal Frequency=1kHz; 16bit Data; Measurement frequency=20Hz ∼ 3.4kHz; unless otherwise specified)
Parameter
Symbol
min
typ
max
Units
SRC Characteristics (Down Sampling: SRC-A): SDTI Æ SRC-A Æ SDTOA/SDTOB
Resolution
Input Sample Rate (Note 47)
Output Sample Rate (Note 47)
THD+N (Input = 1kHz, −1dBFS, Note 46)
FSO/FSI = 8kHz/44.1kHz
-
8
-
-
-
8
16
48
-
Bits
kHz
kHz
FSI (fs)
FSO (fs2)
-
-94
-
dB
Dynamic Range (Input = 1kHz, −60dBFS, Note 46)
FSO/FSI = 8kHz/44.1kHz
Ratio between Input and Output Sample Rate
-
1/6
97
-
-
1
dB
-
FSO/FSI
SRC Characteristics (Up Sampling: SRC-B): SDTIA/SDTIB Æ SRC-B Æ SDTO
Resolution
Input Sample Rate (Note 47)
Output Sample Rate (Note 47)
THD+N (Input = 1kHz, −1dBFS, Note 46)
FSO/FSI = 44.1kHz/8kHz
-
-
8
-
8
-
16
-
48
Bits
kHz
kHz
FSI (fs2)
FSO (fs)
-
-95
-
dB
Dynamic Range (Input = 1kHz, −60dBFS, Note 46)
FSO/FSI = 44.1kHz/8kHz
Ratio between Input and Output Sample Rate
-
1
100
-
-
6
dB
-
FSO/FSI
Note 46. Measured by Audio Precision System Two Cascade.
Note 47. “fs” is the sampling frequency for Stereo CODEC. “fs2” is for PCM I/F.
MS0963-E-00
2008/05
- 18 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
