AK4122A Datasheet, PDF (8/54 Pages) Asahi Kasei Microsystems – 24-Bit 96kHz SRC with DIR

[AK4122A]
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
FSO/FSI = 48kHz/44.1kHz
FSO/FSI = 32kHz/48kHz
FSO/FSI = 96kHz/32kHz
Worst Case (FSO/FSI = 48kHz/8kHz)
Dynamic Range (Input = 1kHz, −60dBFS, Note 5)
-
−113
-
dB
-
−113
-
dB
-
−114
-
dB
-
−111
-
dB
-
-
−103 dB
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)
Dynamic Range (Input = 1kHz, −60dBFS, A-weighted, Note 5)
112
-
-
dB
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 AK4122A calculates the data as
“0” 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
Units
-
kΩ
mVpp
96
kHz
MS1076-E-01
-8-
2010/05