AKD4631 Datasheet, PDF (21/43 Pages) Asahi Kasei Microsystems – AK4631-VN Evaluation board Rev.0

ASAHI KASEI
[AKD4631-VN]
2.AK4631 Mode: PLL SLAVE mode
[Measurement condition]
• Measurement unit: ROHDE & SCHWARZ, UPD05
• Bit: 16bit
• Sampling Frequency: 8kHz & 16kHz
• Measurement Frequency: 20 ∼ 3.4kHz (fs=8kHz), 20 ∼ 8kHz (fs=16kHz)
• Power Supply: AVDD=DVDD=SVDD=3.3V
• Temperature: Room
• Input Frequency: 1kHz


[Measurement Results]
2-1. PLL Reference clock : BICK or FCK pin
Loop-back (MIC Æ ADC Æ DAC Æ AOUT)
Result
PLL Reference clock
1fs (FCK pin)
16fs (BICK pin)
Sampling Frequency
8kHz
16kHz
8kHz
16kHz
S/(N+D) (-1dBFS)
65.1dB
72.2dB
85.0dB
83.6dB
D-Range (-60dBFS)
86.3dB
85.0dB
87.8dB
85.0dB
S/N
86.4dB
85.0dB
87.9dB
85.0dB


2-2. PLL Reference clock : MCKI pin



Loop-back (MIC Æ ADC Æ DAC Æ AOUT)
Result
PLL Reference clock
12.288MHz
Sampling Frequency
8kHz
16kHz
S/(N+D) (-1dBFS)
84.5dB
83.4dB
D-Range (-60dBFS)
86.3dB
85.1dB
S/N
86.6dB
85.2dB




3.AK4631 Mode: PLL MASTER mode


[Measurement condition]
• Measurement unit: ROHDE & SCHWARZ, UPD05
• MCKI: 12.288 MHz
• BICK: 16fs
• Bit: 16bit
• Sampling Frequency: 8kHz & 16kHz
• Measurement Frequency: 20 ∼ 3.4kHz (fs=8kHz), 20 ∼ 8kHz (fs=16kHz)
• Power Supply: AVDD=DVDD=SVDD=3.3V
• Temperature: Room
• Input Frequency:1kHz
[Measurement Results]
Loop-back (MIC Æ ADC Æ DAC Æ AOUT)
Result
S/(N+D) (-1dBFS)
D-Range (-60dBFS)
S/N
8kHz
84.4dB
86.1dB
86.4dB
16kHz
83.9dB
85.3dB
85.3dB


<KM077301>
- 21 -
2005/01