ASAHI AK55X2, Manual

Page: 33 / 55

[AKD5572-B]
< KM119202> 2015/09
Measurement Results
[Measurement condition]
・ Measurement unit : Audio Precision, SYS-2722
・
MCKI : 256fs/256fs/128fs (12.288MHz/24.576MHz/24.576MHz )
・ BICK : 64fs
・
fs : 48kHz / 96kHz / 192kHz
・ Bit : 24bit
・
Measurement Mode : ADC @ Slave Mode
・ Power Supply : VOP+(15V)=15V, GND
AVDD=5.0V (Regulator), DVDD=3.3V (Regulator)
・ Input Frequency : 1kHz
・ Measurement Frequency : 20 ~ 20kHz @48kHz / 20 ～ 40kHz @96kHz / 20 ～ 80kHz @192kHz
・ Temperature : Room
[Measurement Results]
1. Stereo ADC
（
Differential Inputs
）
Result
Unit
SDTO1 SDTO2
Lch Rch Lch Rch
Stereo ADC : AINL/R => ADC => SDTO1/2
S/(N+D)
fs = 48kHz (-1dBFS) 112.3 112.1 - - dB
fs = 96kHz (-1dBFS) 109.2 109.1 - - dB
fs = 192kHz (-1dBFS) 108.6 108.4
- -
dB
DR fs = 48kHz (-60dBFS, A-Weighted) 121.2 121.2 - - dB
S/N fs = 48kHz (A-weighted) 121.3 121.2 - - dB
2. Mono ADC （ Differential Inputs ）
Result
Unit
SDTO1 SDTO2
Lch Rch Lch Rch
Mono ADC : AINL/R => ADC => SDTO1/2
S/(N+D)
fs = 48kHz (-1dBFS) 113.6 113.6
- -
dB
fs = 96kHz (-1dBFS) 111.3 111.3
- -
dB
fs = 192kHz (-1dBFS) 110.3 110.4 - - dB
DR fs = 48kHz (-60dBFS, A-Weighted) 124.2 124.2 - - dB
S/N fs = 48kHz (A-weighted) 124.3 124.3 - - dB
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