AKM AKD4953A-B, Manual

Page: 29 / 64

[AKD4953A-B]
<KM104800> 2010/10
- 29 -
MEASUREMENT RESULTS
[Measurement condition]
Measurement unit : Audio Precision, System two Cascade
MCKI : 256fs (11.2896MHz,24.576MHz)
BICK : 64fs
fs : 44.1kHz,96kHz
Bit : 24bit
Measurement Mode : EXT Slave Mode
Power Supply
: SVDD=AVDD=TVDD=3.3V, DVDD=1.8V
Input Frequency : 1kHz
Measurement Frequency : 20 ~ 20kHz
Temperature
: Room
[Measurement Results]
1. ADC
Result
Lch Rch
Unit
ADC: LIN1/RIN1 → ADC → IVOL, IVOL=0dB, ALC=OFF, MGAIN = +0dB
fs=44.1kHz, BW=20kHz
S/(N+D) (-1dBFS)
85.3 85.2 dB
DR (-60dBFS, A-Weighted) 96.1 96.1 dB
S/N (A-weighted) 96.1 96.1 dB
fs=96kHz, BW=40kHz
S/(N+D) (-1dBFS)
80.4 80 dB
DR (-60dBFS, A-Weighted) 97.3 97.3 dB
S/N (A-weighted) 97.3 97.3 dB
Result
Lch Rch
Unit
ADC: LIN1/RIN1 → ADC → IVOL, IVOL=0dB, ALC=OFF, MGAIN = +20dB
fs=44.1kHz, BW=20kHz
S/(N+D) (-1dBFS)
82.7 82.7 dB
DR (-60dBFS, A-Weighted) 87.7 87.7 dB
S/N (A-weighted) 87.7 87.7 dB
fs=96kHz, BW=40kHz
S/(N+D) (-1dBFS)
78.6 78.4 dB
DR (-60dBFS, A-Weighted) 87.8 87.7 dB
S/N (A-weighted) 87.7 87.7 dB
2. DAC
Result
Lch Rch
Unit
Headphone-Amp: DAC Æ HPL/HPR, ALC=OFF,OVOL=DVOL=0dB, RL=16 Ω
S/(N+D) fs=44.1kHz, BW=20kHz (-3dBFS) 80.2 80.2 dB
S/(N+D) fs=96kHz, BW=40kHz (-3dBFS) 77.4 77.8 dB
S/N (A-weighted) 96.4 96.4 dB
Speaker-Amp: DAC
Æ
SPP/SPN, IVOL=DVOL=0dB, R
L
=8
Ω
fs=44.1kHz, BW=20kHz
S/(N+D) (-0.5dBFS)
70.5 dB
S/N (A-Weighted) 97.2 dB