AKD4631-VN Datasheet, PDF (26/44 Pages) Asahi Kasei Microsystems – 16bit mono CODEC with MIC/SPK amplifier.

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)
PLL Reference clock
Sampling Frequency
S/(N+D) (-1dBFS)
D-Range (-60dBFS)
S/N
1fs (FCK pin)
8kHz
16kHz
65.1dB
72.2dB
86.3dB
85.0dB
86.4dB
85.0dB
Result
16fs (BICK pin)
8kHz
16kHz
85.0dB
83.6dB
87.8dB
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
8kHz
16kHz
S/(N+D) (-1dBFS)
D-Range (-60dBFS)
S/N
84.4dB
86.1dB
86.4dB
83.9dB
85.3dB
85.3dB
<KM077302>
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2005/12