AKD4627-A Datasheet, PDF (21/72 Pages) Asahi Kasei Microsystems – Evaluation board Rev.0 for AK4627

MEASUREMENT RESULTS
1) ADC part
[Measurement condition]
• Measurement unit : Audio Precision, System two, Cascade
• MCLK
: 512fs at 48kHz, 256fs at 96kHz
• BICK
: 64fs
• fs
: 48kHz, 96kHz
• BW
: 20Hz∼20kHz at fs=48kHz, 20Hz∼40kHz at 96kHz
• Bit
: 24bit
• Power Supply : AVDD=DVDD= TVDD=5V
• Interface
: DIT (AK4118)
• Temperature : Room
a) Single-ended Inputs
fs=48kHz
Parameter
S/(N+D)
DR
S/N
Input signal
1kHz,
-0.5dBFS
1kHz,
-60dBFS
No signal
Measurement filter
20kHz LPF
20kHz LPF
20kHz LPF+A-weighted
20kHz LPF
20kHz LPF+A-weighted
LIN1
96.9
99.8
102.7
99.9
102.8
RIN1
96.5
99.9
102.7
100.1
103.1
fs=96kHz
Parameter
S/(N+D)
DR
S/N
Input signal
1kHz,
-0.5dBFS
1kHz,
-60dBFS
No signal
Measurement filter
40kHz LPF
40kHz LPF
40kHz LPF+A-weighted
40kHz LPF
40kHz LPF+A-weighted
LIN1
93.1
98.0
104.7
98.1
105.2
RIN1
93.0
98.1
104.8
98.1
105.2
b) Differential Inputs
fs=48kHz
Parameter
S/(N+D)
DR
S/N
Input signal
1kHz,
-0.5dBFS
1kHz,
-60dBFS
No signal
Measurement filter
20kHz LPF
20kHz LPF
20kHz LPF+A-weighted
20kHz LPF
20kHz LPF+A-weighted
LIN1±
98.3
100.2
102.9
100.4
103.3
RIN1±
97.4
100.3
103.0
100.4
103.3
fs=96kHz
Parameter
S/(N+D)
DR
S/N
Input signal
1kHz,
-0.5dBFS
1kHz,
-60dBFS
No signal
Measurement filter
40kHz LPF
40kHz LPF
40kHz LPF+A-weighted
40kHz LPF
40kHz LPF+A-weighted
LIN1±
95.9
98.4
105.2
98.4
105.6
RIN1±
95.5
98.5
105.4
98.5
105.5
Units
dB
dB
dB
dB
dB
Units
dB
dB
dB
dB
dB
Units
dB
dB
dB
dB
dB
Units
dB
dB
dB
dB
dB
[AKD4627-A]
<KM102000>
-21-
2010/08