AKD4632 Datasheet, PDF (26/48 Pages) Asahi Kasei Microsystems – AK4632 Evaluation board Rev.0

ASAHI KASEI
[AKD4632-A]
2.AK4632 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=VVDD=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)
PLL Reference clock
Sampling Frequency
S/(N+D) (-1dBFS)
D-Range (-60dBFS)
S/N
1fs (FCK pin)
8kHz
16kHz
75.3dB
78.6dB
86.5dB
86.0dB
86.5dB
85.9dB
Result
16fs (BICK pin)
8kHz
16kHz
84.7dB
83.8dB
87.7dB
85.9dB
87.6dB
85.8dB
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)
84.7dB
83.8dB
D-Range (-60dBFS)
87.4dB
85.8dB
S/N
88.0dB
85.8dB
3.AK4632 Mode: PLL MASTER mode
[Measurement condition]
• Measurement unit: ROHDE & SCHWARZ, UPD05
• MCKI: 12.288MHz
• BICK: 16fs
• Bit: 16bit
• Sampling Frequency: 8kHz & 16kHz
• Measurement Frequency: 20 ∼ 3.4kHz (fs=8kHz), 20 ∼ 8kHz (fs=16kHz)
• Power Supply: AVDD=DVDD=SVDD=VVDD=3.3V
• Temperature: Room
• Input Frequency: 1kHz
[Measurement Results]
Loop-back (MIC Æ ADC Æ DAC Æ AOUT)
Result
8kHz
16kHz
S/(N+D) (-1dBFS)
84.2dB
83.3dB
D-Range (-60dBFS)
S/N
86.9dB
87.0dB
85.0dB
85.0dB
<KM075602>
- 26 -
2005/04