ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 1 -
AKD4556-B 24 A/D & D/A AK4556 A/D → D/A
A/D D/A
AKD4556-B --- AK4556-B
•
- DIT(AK4114) BNC
- DIR(AK4114) BNC
• 10
AK4114
(DIR&DIT)
Opt In
Opt Out
A
K4556
5V
LIN
RIN
LOUT
ROUT
10pin Header
DSP
GND
Regulator
BNC
BNC
Figure 1. AKD4556-B Block Diagram
*
AK4556 Rev.1
A
KD4556-B
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 2 -
1)
[VCC] ( ) = +5 V (AK4556 , AK4114 , Digial Logic +3.3V
)
[GND] ( ) = 0 V
2) DIP SW
3)
SW1(PDN) “L” AK4556 “H”
SW1 (PDN) : AK4556 AK4114 “H”
“L”
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 3 -
AK4114 AK4556 AK4114 AK4556
AK4114 Quad Speed RX TX BNC
(1) AK4114 A/D D/A <Default>
(2) AK4114 DIR D/A
(3) AK4114 DIT A/D
(4) DSP (PORT3)
(1) AK4114 A/D D/A
(X1) 24.576 MHz
(1-1) <Default>
JP1 : Short
JP2 : Short
SW3-1 (XTL1) : H
SW3-2 (XTL0) : L
SW3-7 (CM0) : H
AK4556 AK4114 Table 3 Table 6 Table 7
AK4556 Mode4 (HPF:ON , Audio Format: I
2
S)
SW2 AK4556 SW3 AK4114
CKS3 CKS2 CKS1 CKS0 DIF1 DIF0 OCKS1 OCKS0
Speed
(SW2-3) (SW2-4) (SW2-5) (SW2-6) (SW3-3) (SW3-4) (SW3-5) (SW3-6)
Normal L H L L L H H L
Double L H L L L H L L
Quad L H L L L H H H
(1-2)
JP1 : Short
JP2 : Short
SW3-1 (XTL1) : H
SW3-2 (XTL0) : L
SW3-3 (DIF1) : H
SW3-4 (DIF0) : H
SW3-7 (CM0) : H
AK4556 AK4114 Talbe 3 Table 7
AK4556 Master Mode (HPF:ON , Audio Format: I
2
S)
SW2 AK4556 SW3 AK4114
CKS3 CKS2 CKS1 CKS0 OCKS1 OCKS0
Speed
(SW2-3) (SW2-4) (SW2-5) (SW2-6) (SW3-5) (SW3-6)
Normal H H L H H L
Double H H L L L L
Quad H H H L H H
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 4 -
(2) AK4114 DIR D/A
(PORT1) BNC (J6) DIR MCLK BCLK LRCK SDATA
(2-1)
JP1 : Short
JP2 : Short
JP3 : (OPT or BNC)
SW3-1 (XTL1) : H
SW3-2 (XTL0) : H
SW3-7 (CM0) : L
AK4556 AK4114 Table 3 Table 6 Table 7
AK4556 Mode4 (HPF:ON , Audio Format: I
2
S)
SW2 AK4556 SW3 AK4114
CKS3 CKS2 CKS1 CKS0 DIF1 DIF0 OCKS1 OCKS0
Speed
(SW2-3) (SW2-4) (SW2-5) (SW2-6) (SW3-3) (SW3-4) (SW3-5) (SW3-6)
Nomal L H L L L H H L
Double L H L L L H L L
Quad L H L L L H H H
(2-2)
JP1 : Short
JP2 : Short
JP3 : (OPT or BNC)
SW3-1 (XTL1) : H
SW3-2 (XTL0) : H
SW3-3 (DIF1) : H
SW3-4 (DIF0) : H
SW3-7 (CM0) : L
AK4556 AK4114 Talbe 3 Table 7
AK4556 Master Mode (HPF:ON , Audio Format: I
2
S)
SW2 AK4556 SW3 AK4114
CKS3 CKS2 CKS1 CKS0 OCKS1 OCKS0
Speed
(SW2-3) (SW2-4) (SW2-5) (SW2-6) (SW3-5) (SW3-6)
Normal H H L H H L
Double H H L L L L
Quad H H H L H H
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 5 -
(3) AK4114 DIT A/D
(PORT2) BNC (J7) A/D
(3-1)
(3-1-1) AK4114 PLL
PORT1 (OPT) J6 (BNC) AK4114 DIR
JP1 : Short
JP2 : Short
JP3,JP4 : (OPT or BNC)
SW3-1 (XTL1) : H
SW3-2 (XTL0) : H
SW3-7 (CM0) : L
(3-1-2) (X1) 24.576 MHz
JP1 : Short
JP2 : Short
JP4 : (OPT or BNC)
SW3-1 (XTL1) : H
SW3-2 (XTL0) : L
SW3-7 (CM0) : H
AK4556 AK4114 Table 3 Table 6 Table 7
AK4556 Mode8 (HPF:ON , Audio Format:LJ)
SW2 AK4556 SW3 AK4114
CKS3 CKS2 CKS1 CKS0 DIF1 DIF0 OCKS1 OCKS0
Speed
(SW2-3) (SW2-4) (SW2-5) (SW2-6) (SW3-3) (SW3-4) (SW3-5) (SW3-6)
Normal H L L L L L H L
Double H L L L L L L L
Quad H L L L L L H H
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 6 -
(3-2)
(3-2-1) AK4114 PLL
PORT1 (OPT) or J6 (BNC) AK4114 DIR
JP1 : Short
JP2 : Short
JP3,JP4 : (OPT or BNC)
SW3-1 (XTL1) : H
SW3-2 (XTL0) : H
SW3-3 (DIF1) : H
SW3-4 (DIF0) : H
SW3-7 (CM0) : L
(3-2-2) (X1) 24.576 MHz
JP1 : Short
JP2 : Short
JP4 : (OPT or BNC)
SW3-1 (XTL1) : H
SW3-2 (XTL0) : L
SW3-3 (DIF1) : H
SW3-4 (DIF0) : H
SW3-7 (CM0) : H
AK4556 AK4114 Talbe 3 Table 7
AK4556 Master Mode (HPF:ON , Audio Format: I
2
S)
SW2 AK4556 SW3 AK4114
CKS3 CKS2 CKS1 CKS0 OCKS1 OCKS0
Speed
(SW2-3) (SW2-4) (SW2-5) (SW2-6) (SW3-5) (SW3-6)
Normal H H L H H L
Double H H L L L L
Quad H H H L H H
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 7 -
(4) DSP (PORT3)
PORT3
(4-1)
JP1 : Open
JP2 : Open
SW3-3 (DIF1) : H
SW3-4 (DIF0) : H
AK4556 SW2
(4-2)
JP1 : Open
JP2 : Open
SW3-3 (DIF1) : H
SW3-4 (DIF0) : H
AK4556 SW2
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 8 -
DIP SW
1. SW2 (AK4556)
No. Name Default
1 DEM1 L
2 DEM0 H
3 CKS3 L
4 CKS2 H
5 CKS1 L
6 CKS0 L
Table 1 . SW2 AK4556 Mode Setting
DEM1 DEM0 Mode
L L 44.1kHz
L H OFF
H L 48kHz
H H 32kHz
Table 2 . De-emphasis filter control
Mode CKS3 CKS2 CKS1 CKS0 HPF M/S MCLK Audio I/F
0 L L L L ON Slave
128/192fs (Quad Speed)
256/384fs (Double Speed)
512/768fs (Normal Speed)
LJ/RJ
1 L L L H ON Slave
256/384/512/768fs
(Normal Speed)
LJ/RJ
2 L L H L OFF Slave
128/192fs (Quad Speed)
256/384fs (Double Speed)
512/768fs (Normal Speed)
LJ/RJ
3 L L H H OFF Slave
256/384/512/768fs
(Normal Speed)
LJ/RJ
4 L H L L ON Slave
128/192fs (Quad Speed)
256/384fs (Double Speed)
512/768fs (Normal Speed)
I
2
S
5 L H L H ON Slave
256/384/512/768fs
(Normal Speed)
I
2
S
6 L H H L OFF Slave
128/192fs (Quad Speed)
256/384fs (Double Speed)
512/768fs (Normal Speed)
I
2
S
7 L H H H OFF Slave
256/384/512/768fs
(Normal Speed)
I
2
S
8 H L L L ON Slave
128/192fs (Quad Speed)
256/384fs (Double Speed)
512/768fs (Normal Speed)
LJ
9 H L L H ON Slave
256/384/512/768fs
(Normal Speed)
LJ
10 H L H L OFF Slave
128/192fs (Quad Speed)
256/384fs (Double Speed)
512/768fs (Normal Speed)
LJ
11 H L H H OFF Slave
256/384/512/768fs
(Normal Speed)
LJ
12 H H L L ON Master 256fs (Double Speed) I
2
S
13 H H L H ON Master 512fs (Normal Speed) I
2
S
14 H H H L ON Master 128fs (Quad Speed) I
2
S
15 H H H H ON Master 256fs (Normal Speed) I
2
S
Table 3 . AK4556 Mode Settting
AK4114 Audio I/F LJ/RJ (Mode 0 Mode 3)
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 9 -
2. SW3 (AK4114)
No. Name Default
1 XTL1 H
2 XTL0 L
3 DIF1 L
4 DIF0 H
5 OCKS1 L
6 OCKS0 L
7 CM0 H
Table 4 . SW3 AK4114 Mode Setting
XTL1 XTL0 X’tal Frequency
L L 11.2896 MHz
L H 12.288 MHz
H L 24.576 MHz
H H OFF
Table 5 . Reference X’tal Frequency
DIF1 DIF0 DAUX SDTO LRCK,BCLK
L L 24bit LJ 24bit LJ O
L H 24bit I
2
S 24bit I
2
S O
H H 24bit I
2
S 24bit I
2
S I
Table 6. Audio Data Format
OCKS1 OCKS0 MCKO1 X’tal fs Max Speed
L L 256fs 256fs 96kHz Double
H L 512fs 512fs 48kHz Normal
H H 128fs 128fs 192kHz Quad
Table 7. Master Clock Output Frequency
CM0 PLL Clock Souce SDTO
L ON PLL RX
H OFF X’tal DAUX
Table 8 . Clock Operation Mode
JP1 : MCLK
Short : AK4114 MCLK
Open : PORT3 MCLK
JP2 : SDTI
Short : AK4114 SDTI
Open : PORT3 SDTI
JP3 : RX (DIR)
OPT : (PORT1)
BNC : BNC (J5)
JP4 : TX (DIT)
OPT : (PORT2)
BNC : BNC (J6)
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 10 -
J1
RIN
+
C7
10u
J2
LIN
+
C8
10u
LIN
RIN
Figure 2. Analog Input Circuit
+
C9
22u
R8
220
J3
ROU
T
R9
10k
+
C10
22u
R10
10k
R11
220
J4
LOU
T
LOUT
ROUT
Figure 3. Analog Output Circuit
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 11 -
MEASUREMENT RESULTS
[Measurement condition]
● Measurement unit: Audio Precision, System two Cascade
● Slave Mode
● BCLK: 64fs
● Bit: 24bit
● Measurement Frequency: Nomal Speed : 20Hz ∼ 20kHz , Double & Quad Speed : 20Hz 40kHz
● Power Supply: VA=VD=3.3 V
● Temperature: Room
● Input Frequency: 1kHz
● Sampling Frequency: 48kHz , 96kHz , 192kHz
[Measurement Results]
ADC (LIN/RIN) characteristics
Sampling
Frequency
Parameter Condition Filter L ch R ch Units
S / (N+D) -1dB Input 20kHzLPF 92.2
92.1
dB
DR -60dB Input 20kHzLPF 102.4
102.4
dB
DR -60dB Input A-weighted 104.8
104.8
dB
48kHz
S/N No Signal A-weighted 104.9
104.9
dB
S / (N+D) -1dB Input 40kHzLPF 90.8
90.8
dB
DR -60dB Input 40kHzLPF 98.7
98.7
dB
DR -60dB Input A-weighted 104.3
104.3
dB
96kHz
S/N No Signal A-weighted 104.4
104.4
dB
S / (N+D) -1dB Input 40kHzLPF 90.8
90.8
dB
DR -60dB Input 40kHz LPF 98.6
98.6
dB
DR -60dB Input A-weighted 103.8
103.8
dB
192kHz
S/N No Signal A-weighted 103.9
103.9
dB
DAC (LOUT/ROUT) characteristics
Sampling
Frequency
Parameter Condition Filter L [dB] R [dB] Units
S / (N+D) 0dB Input 20kHzLPF 90.8
90.9
dB
DR -60dB Input 20kHzLPF 105.0
105.0
dB
DR -60dB Input A-weighted 107.5
107.5
dB
48kHz
S/N No Signal A-weighted 107.8
107.8
dB
S / (N+D) 0dB Input 40kHzLPF 89.2
89.1
dB
DR -60dB Input 40kHzLPF 102.7
102.7
dB
DR -60dB Input A-weighted 107.7
107.7
dB
96kHz
S/N No Signal A-weighted 107.7
107.7
dB
S / (
N
+D) 0dB Input 40kHzLPF 89.2
89.2
dB
DR -60dB Input 40kHz LPF 102.7
102.7
dB
DR -60dB Input A-weighted 107.7
107.7
dB
192kHz
S/N No Signal A-weighted 107.7
107.7
dB
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 12 -
[Plots]
ADC
fs=48kHz
AKM AK4556 ADC FFT
fs=48kHz , -1dB Input
20 20k50 100 200 500 1k 2k 5k 10k
Hz
-180
+0
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
Figure 4. FFT (fin=1kHz , Input Level=-1dBFS)
AKM AK4556 ADC FFT
fs=48kHz , -60dB Input
20 20k50 100 200 500 1k 2k 5k 10k
Hz
-180
+0
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
Figure 5. FFT (fin=1kHz , Input Level=-60dBFS)
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 13 -
AKM AK4556 ADC FFT
fs=48kHz , No Signal
20 20k50 100 200 500 1k 2k 5k 10k
Hz
-180
+0
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
Figure 6. FFT (fin=1kHz , No Signal)
AKM AK4556 ADC THD + N vs Input Level
fs=48kHz
-120 -10-110 -100 -90 -80 -70 -60 -50 -40 -30 -20
dBr
-120
-60
-115
-110
-105
-100
-95
-90
-85
-80
-75
-70
-65
d
B
F
S
Figure 7. THD+N vs Input Level (fin=1kHz)
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 14 -
AKM AK4556 ADC THD + N vs Input Frequency
fs=48kHz
20 20k50 100 200 500 1k 2k 5k 10k
Hz
-120
-60
-115
-110
-105
-100
-95
-90
-85
-80
-75
-70
-65
d
B
F
S
Figure 8. THD+N vs Input Frequency (Input Level =-1dBFS)
AKM AK4556 ADC Linearity
fs=48kHz
-120 +0-110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10
dBr
-120
+0
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
Figure 9. Linearity (fin=1kHz)
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 15 -
AKM AK4556 ADC Freqency Response
fs=48kHz
20 20k50 100 200 500 1k 2k 5k 10k
Hz
-2
+0
-1.8
-1.6
-1.4
-1.2
-1
-0.8
-0.6
-0.4
-0.2
d
B
F
S
Figure 10. Frequency Response
AKM AK4556 ADC Crosstalk
fs=48kHz
20 20k50 100 200 500 1k 2k 5k 10k
Hz
-150
-80
-145
-140
-135
-130
-125
-120
-115
-110
-105
-100
-95
-90
-85
d
B
Figure 11. Crosstalk
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 16 -
fs=96kHz
AKM AK4556 ADC FFT
fs=96kHz , -1dB Input
20 40k50 100 200 500 1k 2k 5k 10k 20k
Hz
-180
+0
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
Figure 12. FFT (fin=1kHz , Input Level=-1dBFS)
AKM AK4556 ADC FFT
fs=96kHz , -60dB Input
20 40k50 100 200 500 1k 2k 5k 10k 20k
Hz
-180
+0
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
Figure 13. FFT (fin=1kHz , Input Level=-60dBFS)
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 17 -
AKM AK4556 ADC FFT
fs=96kHz , No Signal
20 40k50 100 200 500 1k 2k 5k 10k 20k
Hz
-180
+0
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
Figure 14. FFT (fin=1kHz , No Signal)
AKM AK4556 ADC THD + N vs Input Level
fs=96kHz
-120 -10-110 -100 -90 -80 -70 -60 -50 -40 -30 -20
dBr
-120
-60
-115
-110
-105
-100
-95
-90
-85
-80
-75
-70
-65
d
B
F
S
Figure 15. THD+N vs Input Level (fin=1kHz)
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 18 -
AKM AK4556 ADC THD + N vs Input Frequency
fs=96kHz
20 40k50 100 200 500 1k 2k 5k 10k 20k
Hz
-120
-60
-115
-110
-105
-100
-95
-90
-85
-80
-75
-70
-65
d
B
F
S
Figure 16. THD+N vs Input Frequency (Input Level =-1dBFS)
AKM AK4556 ADC Linearity
fs=96kHz
-120 +0-110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10
dBr
-120
+0
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
Figure 17. Linearity (fin=1kHz)
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 19 -
AKM AK4556 ADC Freqency Response
fs=96k
20 40k50 100 200 500 1k 2k 5k 10k 20k
Hz
-2
+0
-1.8
-1.6
-1.4
-1.2
-1
-0.8
-0.6
-0.4
-0.2
d
B
F
S
Figure 18. Frequency Response
AKM AK4556 ADC Crosstalk
fs=96kHz
20 40k50 100 200 500 1k 2k 5k 10k 20k
Hz
-150
-80
-145
-140
-135
-130
-125
-120
-115
-110
-105
-100
-95
-90
-85
d
B
Figure 19. Crosstalk
ASAHI KASEI [AKD4556-B]
<KM082901> 2006/08
- 20 -
fs=192kHz
AKM AK4556 ADC FFT
fs=192kHz , -1dB Input
20 80k50 100 200 500 1k 2k 5k 10k 20k 50k
Hz
-180
+0
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
Figure 20. FFT (fin=1kHz , Input Level=-1dBFS)
AKM AK4556 ADC FFT
fs=192kHz , -60dB Input
20 80k50 100 200 500 1k 2k 5k 10k 20k 50k
Hz
-180
+0
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
Figure 21. FFT (fin=1kHz , Input Level=-60dBFS)
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