ASAHI KASEI
[AK4122]
SRC CHARACTERISTICS
(Ta=25°C; AVDD=DVDD=3.3V; AVSS=BVSS=DVSS=0V; data = 24bit; measurement bandwidth = 20Hz ~ FSO/2;
unless otherwise specified.)
Parameter
Symbol
min
typ
max
Units
SRC Characteristics:
Resolution
(Note 4)
24
Bits
Input Sample Rate
FSI
8
96
kHz
Output Sample Rate
FSO
32
96
kHz
THD+N
(Input = 1kHz, 0dBFS, Note 5)
FSO/FSI = 44.1kHz/48kHz
-
−113
-
dB
FSO/FSI = 48kHz/44.1kHz
-
−113
-
dB
FSO/FSI = 32kHz/48kHz
-
−114
-
dB
FSO/FSI = 96kHz/32kHz
-
−111
-
dB
Worst Case (FSO/FSI = 48kHz/8kHz)
-
-
−103
dB
Dynamic Range (Input = 1kHz,
−60dBFS,
Note 5)
FSO/FSI = 44.1kHz/48kHz
-
114
-
dB
FSO/FSI = 48kHz/44.1kHz
-
115
-
dB
FSO/FSI = 32kHz/48kHz
-
115
-
dB
FSO/FSI = 96kHz/32kHz
-
116
-
dB
Worst Case (FSO/FSI = 32kHz/44.1kHz)
112
-
-
dB
Dynamic Range (Input = 1kHz,
−60dBFS,
A-weighted, Note 5)
FSO/FSI = 44.1kHz/48kHz
-
117
-
dB
Ratio between Input and Output Sample Rate
(Note 6) FSO/FSI
0.33
6
-
Note 4. Input data for SRC corresponds to 24bit data. When LSB 4bit data is input, the AK4122 calculates as “0” data
because SRC is 20bit calculation. Therefore, SRC outputs “0” data.
Note 5. Measured by ROHDE & SCHWARZ UPD04, Rejection Filter = wide, 8192point FFT.
Note 6. The “0.33” is the ratio of FSO/FSI when FSI is 96kHz and FSO is 32kHz. The “6” is the ratio of FSO/FSI
when FSI is 8kHz and FSO is 48kHz.
S/PDIF RECEIVER CHARACTERISTICS
(Ta=25°C; AVDD, DVDD=3.0
∼
3.6V)
Parameter
Symbol
min
typ
Input Resistance
Zin
-
10
Input Voltage
VTH
200
Input Sample Frequency
fs
32
-
max
-
96
Units
kΩ
mVpp
kHz
MS0267-E-03
-8-
2004/08
AKM [ ASAHI KASEI MICROSYSTEMS ]
