ak4368 AKM Semiconductor, Inc., ak4368 Datasheet - Page 21
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ak4368
Manufacturer Part Number
ak4368
Description
Dac With Built-in Pll & Hp-amp
Manufacturer
AKM Semiconductor, Inc.
Datasheet
1.AK4368.pdf
(60 pages)
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ASAHI KASEI
For low sampling rates, DR and S/N degrade because of the out-of-band noise. DR and S/N are improved by using higher
frequency for MCKI. Table 10 shows DR and S/N when the DAC output is to the HP-amp.
MS0529-E-00
Mode
11-15
3, 7,
10
MCKI pin
MCKO pin MCKO bit = “0”: “L”
BICK pin
LRCK pin
0
1
2
4
5
6
8
9
MCKI pin
MCKO pin MCKO bit = “0”: “L”
BICK pin
LRCK pin
Table 6. Relationship between Sampling Frequency and MCKI Frequency (EXT mode)
Table 10. Relationship between MCKI frequency and DR (and S/N) of HP-amp (2.4V)
FS3
0
0
0
0
0
0
1
1
1
Power Up (PMDAC bit = “1”)
Refer to Table 6.
MCKO bit = “1”: Output
BF bit = “1”: 64fs output
BF bit = “0”: 32fs output
Output
Power Up (PMDAC bit = “1”)
Refer to Table 6.
MCKO bit = “1”: Output
Input
Input
Table 7. MCKO frequency (EXT mode, MCKO bit = “1”)
Table 8. Clock Operation in Master mode (EXT mode)
Others
Table 9. Clock Operation in Slave mode (EXT mode)
FS2
0
0
0
1
1
1
0
0
0
1024fs
MCKI
256fs
512fs
PS1
0
0
1
1
FS1
0
0
1
0
0
1
0
0
1
DR, S/N (BW=20kHz, A-weight)
PS0
fs=8kHz
Master Mode (M/S bit = “1”)
0
1
0
1
Slave Mode (M/S bit = “0”)
56dB
75dB
90dB
FS0
0
1
0
0
1
0
0
1
0
- 21 -
MCKO
256fs
128fs
64fs
32fs
Power Down (PMDAC bit = “0”)
Input or
fixed to “L” or “H”
“L”
“L”
“L”
Power Down (PMDAC bit = “0”)
Input or
fixed to “L” or “H”
“L”
Fixed to “L” or “H” externally
Fixed to “L” or “H” externally
8kHz ∼ 48kHz
8kHz ∼ 24kHz
8kHz ∼ 12kHz
8kHz ∼ 48kHz
8kHz ∼ 24kHz
8kHz ∼ 12kHz
8kHz ∼ 48kHz
8kHz ∼ 24kHz
8kHz ∼ 12kHz
fs=16kHz
75dB
90dB
N/A
N/A
Default
fs
1024fs
1024fs
1024fs
MCKI
256fs
512fs
256fs
512fs
256fs
512fs
N/A
Default
[AK4368EG]
2006/07
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