AK4556VT

ASAHI KASEI
[AKD4556-B]
AKD4556-B
AK4556 Evaluation board Rev.1
GENERAL DESCRIPTION
The AKD4556-B is an evaluation board for the AK4556, the 24Bit A/D & D/A converter. The AKD4556-B
can evaluate A/D converter and D/A converter separately in addition to loopback mode (A/D→D/A). The
AKD4556-B also has the digital audio interface and can achieve the interface with digital audio systems
via opt-connector.
„ Ordering guide
AKD4556-B
---
Evaluation board for AK4556
FUNCTION
† Digital interface
- DIT (AK4114): optical or BNC
- DIR (AK4114): optical or BNC
† 10pin header for serial control interface
5V
Regulator
GND
BNC
LIN
Opt In
AK4114
(DIR&DIT)
RIN
Opt Out
AK4556
LOUT
BNC
10pin Header
DSP
ROUT
Figure 1. AKD4556-B Block Diagram
* Circuit diagram and PCB layout are attached at the end of this manual.
<KM082901>
2006/08
-1-
ASAHI KASEI
[AKD4556-B]
Evaluation Board Manual
„ Operation sequence
1) Set up the power supply lines
[5V]
(red)
= +5V (3.3V is supplied to the AK4556 , the AK4114 , and the Digital Logic via the
regulator.)
[GND] (black)
= 0V
2) Set up the evaluation modes, jumper pins and DIP switch. (See the followings.)
3) Power on
The AK4556 should be reset once bringing SW1 (PDN) “L” upon power-up.
„ The function of the toggle SW.
[SW1] : Resets the AK4556 & AK4114. Keep “H” during normal operation.
<KM082901>
2006/08
-2-
ASAHI KASEI
[AKD4556-B]
„ Evaluation modes
In case of the AK4556 evaluation using the AK4114, it is necessary to correspond to the audio interface format.
RX and TX use BNC connector at evaluation of Quad Speed with the AK4114.
Applicable evaluation modes
(1) Evaluation of Loopback mode using the AK4114 <default>
(2) Evaluation of DAC using DIR of the AK4114
(3) Evaluation of ADC using DIT of the AK4114
(4) All interface signals including master clock are fed externally.
(1) Evaluation of Loopback mode using the AK4114
X’tal oscillator (X1) 24.576MHz is used.
(1-1) Slave mode <Default>
JP1 : Short
JP2 : Short
SW3-1 (XTL1) : H
SW3-2 (XTL0) : L
SW3-7 (CM0) : H
For the AK4556’s sampling speed and audio interface format, refer to Table 3 on page 8.
For the AK4114’s sampling speed and audio interface format, refer to Table 6 and Table 7 on page 9.
Example . Setting of the AK4556 mode 4 (HPF:ON , Audio Format: I2S)
SW2 AK4556
SW3 AK4114
Speed
CKS3
CKS2
CKS1
CKS0
DIF1
DIF0
OCKS1
(SW2-3)
(SW2-4)
(SW2-5)
(SW2-6)
(SW3-3)
(SW3-4)
(SW3-5)
OCKS0
(SW3-6)
L
L
L
H
H
H
L
L
L
L
L
L
L
L
L
H
H
H
H
L
H
L
L
H
Normal
Double
Quad
(1-2) Master mode
JP1 : Short
JP2 : Short
SW3-1 (XTL1) : H
SW3-2 (XTL0) : L
SW3-3 (DIF1) : H
SW3-4 (DIF0) : H
SW3-7 (CM0) : H
For the AK4556’s sampling speed and audio interface format, refer to Table 3 on page 8.
For the AK4114’s sampling speed and audio interface format, refer to Table 6 and Table 7 on page 9.
Example . Setting of the AK4556 Master mode (HPF:ON , Audio Format: I2S)
SW2 AK4556
SW3 AK4114
Speed
CKS3
CKS2
CKS1
CKS0
OCKS1
OCKS0
Normal
Double
Quad
(SW2-3)
(SW2-4)
(SW2-5)
(SW2-6)
(SW3-5)
(SW3-6)
H
H
H
H
H
H
L
L
H
H
L
L
H
L
H
L
L
H
<KM082901>
2006/08
-3-
ASAHI KASEI
[AKD4556-B]
(2) Evaluation of DAC using DIR of the AK4114
DIR generates MCLK , BCLK , LRCK , and SDATA from received data via optical (PORT1) or BNC connector (J6).
(2-1) Slave mode
JP1 : Short
JP2 : Short
JP3 : OPT or BNC
SW3-1 (XTL1) : H
SW3-2 (XTL0) : H
SW3-7 (CM0) : L
For the AK4556’s sampling speed and audio interface format, refer to Table 3 on page 8.
For the AK4114’s sampling speed and audio interface format, refer to Table 6 and Table 7 on page 9.
Example . Setting of the AK4556 mode 4 (HPF:ON , Audio Format: I2S)
SW2 AK4556
SW3 AK4114
Speed
CKS3
CKS2
CKS1
CKS0
DIF1
DIF0
OCKS1
OCKS0
(SW2-3)
(SW2-4)
(SW2-5)
(SW2-6)
(SW3-3)
(SW3-4)
(SW3-5)
(SW3-6)
L
L
L
H
H
H
L
L
L
L
L
L
L
L
L
H
H
H
H
L
H
L
L
H
Nomal
Double
Quad
(2-2) Master mode
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
For the AK4556’s sampling speed and audio interface format, refer to Table 3 on page 8.
For the AK4114’s sampling speed and audio interface format, refer to Table 6 and Table 7 on page 9.
Example . Setting of the AK4556 Master mode (HPF:ON , Audio Format: I2S)
SW2 AK4556
SW3 AK4114
Speed
CKS3
CKS2
CKS1
CKS0
OCKS1
OCKS0
Normal
Double
Quad
(SW2-3)
(SW2-4)
(SW2-5)
(SW2-6)
(SW3-5)
(SW3-6)
H
H
H
H
H
H
L
L
H
H
L
L
H
L
H
L
L
H
<KM082901>
2006/08
-4-
ASAHI KASEI
[AKD4556-B]
(3) Evaluation of ADC using DIT of the AK4114
Optical (PORT2) or BNC (J7) connector is used. DIT generates audio bi-phase signal.
(3-1) Slave mode
(3-1-1) When using the AK4114’s PLL
Optical (PORT1) or BNC (J6) connector provides access to the bi-phase signal generated by the AK4114.
JP1 : Short
JP2 : Short
JP3,JP4 : OPT or BNC
SW3-1 (XTL1) : H
SW3-2 (XTL0) : H
SW3-7 (CM0) : L
(3-1-2) When using X’tal oscillator (X1) 24.576MHz
JP1 : Short
JP2 : Short
JP4 : OPT or BNC
SW3-1 (XTL1) : H
SW3-2 (XTL0) : L
SW3-7 (CM0) : H
For the AK4556’s sampling speed and audio interface format, refer to Table 3 on page 8.
For the AK4114’s sampling speed and audio interface format, refer to Table 6 and Table 7 on page 9.
Example . Setting of the AK4556 Mode 8 (HPF:ON , Audio Format:LJ)
SW2 AK4556
SW3 AK4114
Speed
CKS3
CKS2
CKS1
CKS0
DIF1
DIF0
OCKS1
Normal
Double
Quad
OCKS0
(SW2-3)
(SW2-4)
(SW2-5)
(SW2-6)
(SW3-3)
(SW3-4)
(SW3-5)
(SW3-6)
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
L
H
L
L
H
<KM082901>
2006/08
-5-
ASAHI KASEI
[AKD4556-B]
(3-2) Master mode
(3-2-1) When using the AK4114’s PLL
Optical (PORT1) or BNC (J6) connector provides access to the bi-phase signal generated by the AK4114.
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) When using X’tal oscillator (X1) 24.576MHz
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
For the AK4556’s sampling speed and audio interface format, refer to Table 3 on page 8.
For the AK4114’s sampling speed and audio interface format, refer to Table 6 and Table 7 on page 9.
Example . Setting of the AK4556 Master Mode (HPF:ON , Audio Format: I2S)
SW2 AK4556
SW3 AK4114
Speed
CKS3
CKS2
CKS1
CKS0
OCKS1
OCKS0
Normal
Double
Quad
(SW2-3)
(SW2-4)
(SW2-5)
(SW2-6)
(SW3-5)
(SW3-6)
H
H
H
H
H
H
L
L
H
H
L
L
H
L
H
L
L
H
<KM082901>
2006/08
-6-
ASAHI KASEI
[AKD4556-B]
(4) All interface signals including master clock are fed externally.
PORT3 is used.
(4-1) Slave mode
JP1 : Open
JP2 : Open
SW3-3 (DIF1) : H
SW3-4 (DIF0) : H
In slave mode , the AK4556’s sampling speed and audio interface format is set by SW2. See Table 1 on page 8 for
possible mode setting.
(4-2) Master mode
JP1 : Open
JP2 : Open
SW3-3 (DIF1) : H
SW3-4 (DIF0) : H
In master mode , the AK4556’s sampling speed and audio interface format is set by SW2. See Table 1 on page 8 for
possible mode setting.
<KM082901>
2006/08
-7-
ASAHI KASEI
[AKD4556-B]
„ Setting of DIP SW
1. Evaluation mode setting of 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
0
L
L
L
L
ON
Slave
1
L
L
L
H
ON
Slave
2
L
L
H
L
OFF
Slave
3
L
L
H
H
OFF
Slave
4
L
H
L
L
ON
Slave
5
L
H
L
H
ON
Slave
6
L
H
H
L
OFF
Slave
7
L
H
H
H
OFF
Slave
8
H
L
L
L
ON
Slave
9
H
L
L
H
ON
Slave
10
H
L
H
L
OFF
Slave
11
H
L
H
H
OFF
Slave
MCLK
128/192fs (Quad Speed)
256/384fs (Double Speed)
512/768fs (Normal Speed)
256/384/512/768fs
(Normal Speed)
128/192fs (Quad Speed)
256/384fs (Double Speed)
512/768fs (Normal Speed)
256/384/512/768fs
(Normal Speed)
128/192fs (Quad Speed)
256/384fs (Double Speed)
512/768fs (Normal Speed)
256/384/512/768fs
(Normal Speed)
128/192fs (Quad Speed)
256/384fs (Double Speed)
512/768fs (Normal Speed)
256/384/512/768fs
(Normal Speed)
128/192fs (Quad Speed)
256/384fs (Double Speed)
512/768fs (Normal Speed)
256/384/512/768fs
(Normal Speed)
128/192fs (Quad Speed)
256/384fs (Double Speed)
512/768fs (Normal Speed)
256/384/512/768fs
(Normal Speed)
256fs (Double Speed)
512fs (Normal Speed)
128fs (Quad Speed)
256fs (Normal Speed)
Audio I/F
LJ/RJ
LJ/RJ
LJ/RJ
LJ/RJ
I2S
I2S
I2S
I2S
LJ
LJ
LJ
LJ
12
H
H
L
L
ON
Master
I2S
13
H
H
L
H
ON
Master
I2S
14
H
H
H
L
ON
Master
I2S
15
H
H
H
H
ON
Master
I2S
Table 3 . AK4556 Mode Settting
In case of the AK4556 evaluation using the AK4114 , LJ/RJ (Mode 0 ~ Mode 3) in Audio I/F does not support.
<KM082901>
2006/08
-8-
ASAHI KASEI
[AKD4556-B]
2. Evaluation mode setting of 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
L
L
24bit LJ
L
H
24bit I2S
H
H
24bit I2S
Table 6. Audio Data Format
SDTO
24bit LJ
24bit I2S
24bit I2S
LRCK,BCLK
O
O
I
OCKS1
OCKS0
MCKO1
L
L
256fs
H
L
512fs
H
H
128fs
Table 7. Master Clock Output Frequency
X’tal
256fs
512fs
128fs
fs Max
96kHz
48kHz
192kHz
CM0
PLL
Clock Souce
L
ON
PLL
H
OFF
X’tal
Table 8 . Clock Operation Mode
SDTO
RX
DAUX
Speed
Double
Normal
Quad
„ Jumper pins set up
[JP1] : MCLK
Short : MCLK is supplied from the AK4114.
Open : MCLK is supplied from PORT3.
[JP2] : SDTI
Short
Open
: SDTI is supplied from the AK4114.
: SDTI is supplied from PORT3.
[JP3] : RX (DIR)
OPT
: Optical connector (PORT1) is used.
BNC : BNC connector (J5) is used.
[JP4] : TX (DIT)
OPT : Optical connector (PORT2) is used.
BNC : BNC connector (J6) is used.
<KM082901>
2006/08
-9-
ASAHI KASEI
[AKD4556-B]
„ Analog input circuit
J1
C7
RIN
10u
+
RIN
J2
C8
LIN
10u
+
LIN
Figure 2. Analog Input Circuit
„ Analog output circuit
J3
R8
+
220
ROUT
ROUT
C9
R9
22u
10k
J4
R11
+
220
LOUT
LOUT
C10
R10
22u
10k
Figure 3. Analog Output Circuit
<KM082901>
2006/08
- 10 -
ASAHI KASEI
[AKD4556-B]
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
Parameter
Frequency
S / (N+D)
DR
48kHz
DR
S/N
Condition
Filter
L ch
R ch
Units
-1dB Input
-60dB Input
-60dB Input
No Signal
20kHzLPF
20kHzLPF
A-weighted
A-weighted
92.2
102.4
104.8
104.9
92.1
102.4
104.8
104.9
dB
dB
dB
dB
96kHz
S / (N+D)
DR
DR
S/N
-1dB Input
-60dB Input
-60dB Input
No Signal
40kHzLPF
40kHzLPF
A-weighted
A-weighted
90.8
98.7
104.3
104.4
90.8
98.7
104.3
104.4
dB
dB
dB
dB
192kHz
S / (N+D)
DR
DR
S/N
-1dB Input
-60dB Input
-60dB Input
No Signal
40kHzLPF
40kHz LPF
A-weighted
A-weighted
90.8
98.6
103.8
103.9
90.8
98.6
103.8
103.9
dB
dB
dB
dB
DAC (LOUT/ROUT) characteristics
Sampling
Parameter
Condition
Frequency
S / (N+D)
0dB Input
DR
-60dB Input
48kHz
DR
-60dB Input
S/N
No Signal
Filter
L [dB]
R [dB]
Units
20kHzLPF
20kHzLPF
A-weighted
A-weighted
90.8
105.0
107.5
107.8
90.9
105.0
107.5
107.8
dB
dB
dB
dB
96kHz
S / (N+D)
DR
DR
S/N
0dB Input
-60dB Input
-60dB Input
No Signal
40kHzLPF
40kHzLPF
A-weighted
A-weighted
89.2
102.7
107.7
107.7
89.1
102.7
107.7
107.7
dB
dB
dB
dB
192kHz
S / (N+D)
DR
DR
S/N
0dB Input
-60dB Input
-60dB Input
No Signal
40kHzLPF
40kHz LPF
A-weighted
A-weighted
89.2
102.7
107.7
107.7
89.2
102.7
107.7
107.7
dB
dB
dB
dB
<KM082901>
2006/08
- 11 -
ASAHI KASEI
[AKD4556-B]
[Plots]
ADC
fs=48kHz
AKM
AK4556 ADC FFT
fs=48kHz , -1dB Input
+0
-10
-20
-30
-40
-50
-60
-70
d
B
F
S
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
5k
10k
20k
5k
10k
20k
Hz
Figure 4. FFT (fin=1kHz , Input Level=-1dBFS)
AKM
AK4556 ADC FFT
fs=48kHz , -60dB Input
+0
-10
-20
-30
-40
-50
-60
-70
d
B
F
S
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
Hz
Figure 5. FFT (fin=1kHz , Input Level=-60dBFS)
<KM082901>
2006/08
- 12 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 ADC FFT
fs=48kHz , No Signal
+0
-10
-20
-30
-40
-50
-60
-70
d
B
F
S
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 6. FFT (fin=1kHz , No Signal)
AKM
AK4556 ADC THD + N vs Input Level
fs=48kHz
-60
-65
-70
-75
-80
-85
d
B
F
S
-90
-95
-100
-105
-110
-115
-120
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
dBr
Figure 7. THD+N vs Input Level (fin=1kHz)
<KM082901>
2006/08
- 13 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 ADC THD + N vs Input Frequency
fs=48kHz
-60
-65
-70
-75
-80
-85
d
B
F
S
-90
-95
-100
-105
-110
-115
-120
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 8. THD+N vs Input Frequency (Input Level =-1dBFS)
AKM
AK4556 ADC Linearity
fs=48kHz
+0
-10
-20
-30
-40
-50
d
B
F
S
-60
-70
-80
-90
-100
-110
-120
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBr
Figure 9. Linearity (fin=1kHz)
<KM082901>
2006/08
- 14 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 ADC Freqency Response
fs=48kHz
+0
-0.2
-0.4
-0.6
-0.8
d
B
F
S
-1
-1.2
-1.4
-1.6
-1.8
-2
20
50
100
200
500
1k
2k
5k
10k
20k
2k
5k
10k
20k
Hz
Figure 10. Frequency Response
AKM
AK4556 ADC Crosstalk
fs=48kHz
-80
-85
-90
-95
-100
-105
-110
d
B
-115
-120
-125
-130
-135
-140
-145
-150
20
50
100
200
500
1k
Hz
Figure 11. Crosstalk
<KM082901>
2006/08
- 15 -
ASAHI KASEI
[AKD4556-B]
fs=96kHz
AKM
AK4556 ADC FFT
fs=96kHz , -1dB Input
+0
-10
-20
-30
-40
-50
-60
-70
d
B
F
S
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
5k
10k
20k
40k
5k
10k
20k
40k
Hz
Figure 12. FFT (fin=1kHz , Input Level=-1dBFS)
AKM
AK4556 ADC FFT
fs=96kHz , -60dB Input
+0
-10
-20
-30
-40
-50
-60
-70
d
B
F
S
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
Hz
Figure 13. FFT (fin=1kHz , Input Level=-60dBFS)
<KM082901>
2006/08
- 16 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 ADC FFT
fs=96kHz , No Signal
+0
-10
-20
-30
-40
-50
-60
-70
d
B
F
S
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
Figure 14. FFT (fin=1kHz , No Signal)
AKM
AK4556 ADC THD + N vs Input Level
fs=96kHz
-60
-65
-70
-75
-80
-85
d
B
F
S
-90
-95
-100
-105
-110
-115
-120
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
dBr
Figure 15. THD+N vs Input Level (fin=1kHz)
<KM082901>
2006/08
- 17 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 ADC THD + N vs Input Frequency
fs=96kHz
-60
-65
-70
-75
-80
-85
d
B
F
S
-90
-95
-100
-105
-110
-115
-120
20
50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
Figure 16. THD+N vs Input Frequency (Input Level =-1dBFS)
AKM
AK4556 ADC Linearity
fs=96kHz
+0
-10
-20
-30
-40
-50
d
B
F
S
-60
-70
-80
-90
-100
-110
-120
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBr
Figure 17. Linearity (fin=1kHz)
<KM082901>
2006/08
- 18 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 ADC Freqency Response
fs=96k
+0
-0.2
-0.4
-0.6
-0.8
d
B
F
S
-1
-1.2
-1.4
-1.6
-1.8
-2
20
50
100
200
500
1k
2k
5k
10k
20k
40k
5k
10k
20k
40k
Hz
Figure 18. Frequency Response
AKM
AK4556 ADC Crosstalk
fs=96kHz
-80
-85
-90
-95
-100
-105
-110
d
B
-115
-120
-125
-130
-135
-140
-145
-150
20
50
100
200
500
1k
2k
Hz
Figure 19. Crosstalk
<KM082901>
2006/08
- 19 -
ASAHI KASEI
[AKD4556-B]
fs=192kHz
AKM
AK4556 ADC FFT
fs=192kHz , -1dB Input
+0
-10
-20
-30
-40
-50
-60
-70
d
B
F
S
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
5k
10k
20k
50k
80k
10k
20k
50k
80k
Hz
Figure 20. FFT (fin=1kHz , Input Level=-1dBFS)
AKM
AK4556 ADC FFT
fs=192kHz , -60dB Input
+0
-10
-20
-30
-40
-50
-60
-70
d
B
F
S
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
5k
Hz
Figure 21. FFT (fin=1kHz , Input Level=-60dBFS)
<KM082901>
2006/08
- 20 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 ADC FFT
fs=192kHz , No Signal
+0
-10
-20
-30
-40
-50
-60
-70
d
B
F
S
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
5k
10k
20k
50k
80k
Hz
Figure 22. FFT (fin=1kHz , No Signal)
AKM
AK4556 ADC THD + N vs Input Level
fs=192kHz
-60
-65
-70
-75
-80
-85
d
B
F
S
-90
-95
-100
-105
-110
-115
-120
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
dBr
Figure 23. THD+N vs Input Level (fin=1kHz)
<KM082901>
2006/08
- 21 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 ADC THD + N vs Input Frequency
fs=192kHz
-60
-65
-70
-75
-80
-85
d
B
F
S
-90
-95
-100
-105
-110
-115
-120
20
50
100
200
500
1k
2k
5k
10k
20k
-30
-20
50k
80k
Hz
Figure 24. THD+N vs Input Frequency (Input Level =-1dBFS)
AKM
AK4556 ADC Linearity
fs=192kHz
+0
-10
-20
-30
-40
-50
d
B
F
S
-60
-70
-80
-90
-100
-110
-120
-120
-110
-100
-90
-80
-70
-60
-50
-40
-10
+0
dBr
Figure 25. Linearity (fin=1kHz)
<KM082901>
2006/08
- 22 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 ADC Freqency Response
fs=192k
+0
-0.2
-0.4
-0.6
-0.8
d
B
F
S
-1
-1.2
-1.4
-1.6
-1.8
-2
20
50
100
200
500
1k
2k
5k
10k
20k
50k
80k
5k
10k
20k
50k
80k
Hz
Figure 26. Frequency Response
AKM
AK4556 ADC Crosstalk
fs=192kHz
-80
-85
-90
-95
-100
-105
-110
d
B
-115
-120
-125
-130
-135
-140
-145
-150
20
50
100
200
500
1k
2k
Hz
Figure 27. Crosstalk
<KM082901>
2006/08
- 23 -
ASAHI KASEI
[AKD4556-B]
DAC
fs=48kHz
AKM
AK4556 DAC FFT
fs=48kHz 0dB Input
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
A
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
5k
10k
20k
5k
10k
20k
Hz
Figure 28. FFT (fin=1kHz , Input Level=0dBFS)
AKM
AK4556 DAC FFT
fs=48kHz , Notch Filter
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
A
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
Hz
Figure 29. FFT (fin=1kHz , Input Level=0dBFS , Notch Filter)
<KM082901>
2006/08
- 24 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 DAC FFT
fs=48kHz , -60dB Input
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
A
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
5k
10k
20k
5k
10k
20k
Hz
Figure 30. FFT (fin=1kHz , Input Level=-60dBFS)
AKM
AK4556 DAC FFT
fs=48kHz , No Signal
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
A
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
Hz
Figure 31. FFT (fin=1kHz , No Signal)
<KM082901>
2006/08
- 25 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 DAC THD + N vs Input Level
fs=48kHz
-60
-65
-70
-75
-80
d
B
r
A
-85
-90
-95
-100
-105
-110
-115
-120
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Figure 32. THD+N vs Input Level (fin=1kHz)
AKM
AK4556 DAC THD + N vs Input Frequency
fs=48kHz
-60
-65
-70
-75
-80
d
B
r
A
-85
-90
-95
-100
-105
-110
-115
-120
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 33. THD+N vs Input Frequency (Input Level =0dBFS)
<KM082901>
2006/08
- 26 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 DAC Linearity
fs=48kHz
+0
-10
-20
-30
-40
-50
d
B
r
-60
A
-70
-80
-90
-100
-110
-120
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Figure 34. Linearity (fin=1kHz)
AKM
AK4556 DAC Frequency Response
fs=48kHz
+2
+1.75
+1.5
+1.25
+1
+0.75
+0.5
d
B
r
+0.25
A
-0.25
+0
-0.5
-0.75
-1
-1.25
-1.5
-1.75
-2
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 35. Frequency Response
<KM082901>
2006/08
- 27 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 DAC Crosstalk
fs=48kHz
-80
-85
-90
-95
-100
-105
-110
d
B
-115
-120
-125
-130
-135
-140
-145
-150
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 36. Crosstalk
<KM082901>
2006/08
- 28 -
ASAHI KASEI
[AKD4556-B]
fs=96kHz
AKM
AK4556 DAC FFT
fs=96kHz , 0dB Input
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
A
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
5k
10k
20k
40k
5k
10k
20k
40k
Hz
Figure 37. FFT (fin=1kHz , Input Level=0dBFS)
AKM
AK4556 DAC FFT
fs=96kHz , Notch Filter
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
A
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
Hz
Figure 38. FFT (fin=1kHz , Input Level=0dBFS , Notch Filter)
<KM082901>
2006/08
- 29 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 DAC FFT
fs=96kHz , -60dB Input
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
A
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
5k
10k
20k
40k
5k
10k
20k
40k
Hz
Figure 39. FFT (fin=1kHz , Input Level=-60dBFS)
AKM
AK4556 DAC FFT
fs=96kHz , No Signal
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
A
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
Hz
Figure 40. FFT (fin=1kHz , No Signal)
<KM082901>
2006/08
- 30 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 DAC THD + N vs Input Level
fs=96kHz
-60
-65
-70
-75
-80
d
B
r
A
-85
-90
-95
-100
-105
-110
-115
-120
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Figure 41. THD+N vs Input Level (fin=1kHz)
AKM
AK4556 DAC THD + N vs Input Frequency
fs=96kHz
-60
-65
-70
-75
-80
d
B
r
A
-85
-90
-95
-100
-105
-110
-115
-120
20
50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
Figure 42. THD+N vs Input Frequency (Input Level =-1dBFS)
<KM082901>
2006/08
- 31 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 DAC Linearity
fs=96kHz
+0
-10
-20
-30
-40
-50
d
B
r
-60
A
-70
-80
-90
-100
-110
-120
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Figure 43. Linearity (fin=1kHz)
AKM
AK4556 DAC Frequency Response
fs=96kHz
+2
+1.75
+1.5
+1.25
+1
+0.75
+0.5
d
B
r
+0.25
A
-0.25
+0
-0.5
-0.75
-1
-1.25
-1.5
-1.75
-2
20
50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
Figure 44. Frequency Response
<KM082901>
2006/08
- 32 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 DAC Crosstalk
fs=96kHz
-80
-85
-90
-95
-100
-105
-110
d
B
-115
-120
-125
-130
-135
-140
-145
-150
20
50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
Figure 45. Crosstalk
<KM082901>
2006/08
- 33 -
ASAHI KASEI
[AKD4556-B]
fs=192kHz
AKM
AK4556 DAC FFT
fs=192kHz , 0dB Input
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
A
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
5k
10k
20k
50k
80k
10k
20k
50k
80k
Hz
Figure 46. FFT (fin=1kHz , Input Level=0dBFS)
AKM
AK4556 DAC FFT
fs=192kHz , Notch Filter
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
A
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
5k
Hz
Figure 47. FFT (fin=1kHz , Input Level=0dBFS , Notch Filter)
<KM082901>
2006/08
- 34 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 DAC FFT
fs=192kHz , -60dB Input
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
A
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
5k
10k
20k
50k
80k
10k
20k
50k
80k
Hz
Figure 48. FFT (fin=1kHz , Input Level=-60dBFS)
AKM
AK4556 DAC FFT
fs=192kHz , No Signal
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
A
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
20
50
100
200
500
1k
2k
5k
Hz
Figure 49. FFT (fin=1kHz , No Signal)
<KM082901>
2006/08
- 35 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 DAC THD + N vs Input Level
fs=192kHz
-60
-65
-70
-75
-80
d
B
r
A
-85
-90
-95
-100
-105
-110
-115
-120
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Figure 50. THD+N vs Input Level (fin=1kHz)
AKM
AK4556 DAC THD + N vs Input Frequency
fs=192kHz
-60
-65
-70
-75
-80
d
B
r
A
-85
-90
-95
-100
-105
-110
-115
-120
20
50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
Figure 51. THD+N vs Input Frequency (Input Level =0dBFS)
<KM082901>
2006/08
- 36 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 DAC Linearity
fs=192kHz
+0
-10
-20
-30
-40
-50
d
B
r
-60
A
-70
-80
-90
-100
-110
-120
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
10k
20k
-10
+0
dBFS
Figure 52. Linearity (fin=1kHz)
AKM
AK4556 DAC Frequency Response
fs=192kHz
+2
+1.75
+1.5
+1.25
+1
+0.75
+0.5
d
B
r
+0.25
A
-0.25
+0
-0.5
-0.75
-1
-1.25
-1.5
-1.75
-2
20
50
100
200
500
1k
2k
5k
50k
80k
Hz
Figure 53. Frequency Response
<KM082901>
2006/08
- 37 -
ASAHI KASEI
[AKD4556-B]
AKM
AK4556 DAC Crosstalk
fs=192kHz
-80
-85
-90
-95
-100
-105
-110
d
B
-115
-120
-125
-130
-135
-140
-145
-150
20
50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
Figure 54. Crosstalk
<KM082901>
2006/08
- 38 -
ASAHI KASEI
[AKD4556-B]
Revision History
Date
(YY/MM/DD)
06/05/18
Manual
Revision
KM082900
Board
Revision
0
06/08/25
KM082901
1
Reason
First Edition
Change device
revision
Contents
• AK4556 Rev.A → Rev.B
• Table Data & Plot Data were updated.
IMPORTANT NOTICE
• These products and their specifications are subject to change without notice. Before considering any
use or application, consult the Asahi Kasei Microsystems Co., Ltd. (AKM) sales office or authorized
distributor concerning their current status.
• AKM assumes no liability for infringement of any patent, intellectual property, or other right in the
application or use of any information contained herein.
• Any export of these products, or devices or systems containing them, may require an export license
or other official approval under the law and regulations of the country of export pertaining to customs
and tariffs, currency exchange, or strategic materials.
• AKM products are neither intended nor authorized for use as critical components in any safety, life
support, or other hazard related device or system, and AKM assumes no responsibility relating to any
such use, except with the express written consent of the Representative Director of AKM. As used
here:
(a) A hazard related device or system is one designed or intended for life support or maintenance of
safety or for applications in medicine, aerospace, nuclear energy, or other fields, in which its
failure to function or perform may reasonably be expected to result in loss of life or in significant
injury or damage to person or property.
(b) A critical component is one whose failure to function or perform may reasonably be expected to
result, whether directly or indirectly, in the loss of the safety or effectiveness of the device or
system containing it, and which must therefore meet very high standards of performance and
reliability.
• It is the responsibility of the buyer or distributor of an AKM product who distributes, disposes of, or
otherwise places the product with a third party to notify that party in advance of the above content
and conditions, and the buyer or distributor agrees to assume any and all responsibility and liability
for and hold AKM harmless from any and all claims arising from the use of said product in the
absence of such notification.
<KM082901>
2006/08
- 39 -
A
B
D
E
3
C17
+
47u
GND
LT1117-3.3
T1
VCC
E
C
IN
OUT
2
VA
C16
0.1u
1
C14
0.1u
C15
+
47u
DGND
E
AGND
LT1117-3.3
T2
GND
for 74HC14
IN
OUT
2
+3.3V
1
3
C13
0.1u
C11
0.1u
+ C12
47u
C18
0.1u
AVDD
D
D
C7
10u
+
J1
RIN
+
C9
22u
U1
1
RIN
ROUT
20
2
LIN
LOUT
19
VCOM
18
PDN
17
+
C
C1
0.1u
+
C4
0.1u
+
C3
10u
C6
0.1u
VA
C5
10u
R12 5.1
3
VSS
4
VA
5
6
DEM0
7
DEM1
R4
B
VD
BCLK
DEM0
MCLK
DEM1
LRCK
C2
2.2u
R11
220
J4
LOUT
C
R10
10k
PDN
R1
51
R2
51
R3
51
R5
51
16
BCLK
15
MCLK
14
51
C10
22u
J3
ROUT
R9
10k
+
C8
10u
+
J2
LIN
R8
220
LRCK
SDTO
8
SDTO
SDTI
13
SDTI
CKS0
9
CKS0
CKS3
12
CKS3
CKS1
10
CKS1
CKS2
11
CKS2
B
AK4556
A
A
Title
Size
A3
Date:
A
B
C
D
AKD4556-B
Document Number
Rev
AK4556
Friday, August 25, 2006
Sheet
E
1
1
of
2
5
4
3
2
1
MCLK
BCLK
D
L1 (short)
PORT1
VCC
3
GND
OUT
2
1
1
C20
C24
+
10u
+3.3V
OPT
C19
0.1u
JP3
RX
JP1
MCLK
R14
18k
C22
+
R15
75
SDTO
C25
10u
BNC
0.1u
C23
0.47u
MCLK
BICK
LRCK
SDTI
VCC
JP2
SDTI
R24
220k
1
2
3
4
5
6
7
8
9
10
11
12
+3.3V
C26
5p
DIF0/RX5
XTI
2
DIF1/RX6
X1
C27
1
XTO
24.576MHz
XTL0
XTL1
PORT2
3
2
GND
1
+3.3V
JP4
T4
DA02
C29
10u +
OPT
C30
0.1u
R21
TX
R23
XTI
R20
+3.3V
CM0
PDN
XTO
C31
0.1u
C32
10u
AK4556 Mode Setting
AK4114 Mode Setting
14
U3C
7
74HC14
14
+3.3V
U3D
5
+3.3V
+3.3V
7
14
4
74HC14
U3E
7
3
U3B
7
6
5
4
3
2
1
74HC14
U3F
PDN
74HC14
11
A
14
13
12
11
10
9
8
+3.3V
SW2
1
2
3
4
5
6
6
5
4
3
2
1
DEM1
DEM0
CKS3
CKS2
CKS1
CKS0
47k
A
7
12
Title
Size
A3
Date:
5
4
B
12
11
10
9
8
7
RP1
XTL1
XTL0
DIF1/RX6
DIF0/RX5
OCKS1
OCKS0
CM0
47K
10
13
+3.3V
SW3
1
2
3
4
5
6
7
DEM1
DEM0
CKS3
CKS2
CKS1
CKS0
RP2
8
14
SW1
PDN
2
14
74HC14
1
C33
0.1u
7
U3A
XTL1
XTL0
DIF1
DIF0
OCKS1
OCKS0
CM0
6
9
14
1S1588
R16
10k
7
D1
L
C
10k
5.1
240
R22
150
1:1
H
SDTO
DSP
BNC
TX
B
AK4114
OCKS0
OCKS1
R27
220k
+3.3V
C28
0.1u
TOTX141
J6
BNC TX
U2
36
35
34
33
32
31
30
29
28
27
26
25
R26
220k
10
9
8
7
6
13
14
15
16
17
18
19
20
21
22
23
24
IN
VCC
INT0
OCKS0/CSN
OCKS1/CCLK
CM1/CDTI
CM0/CDTO
PDN
XTI
XTO
DAUX
MCKO2
BICK
SDTO
R25
220k
PORT3
1
2
3
4
5
TVDD
DVSS
TX0
TX1
BOUT
COUT
UOUT
VOUT
DVDD
DVSS
MCKO1
LRCK
5p
IPS0/RX4
AVSS
DIF0/RX5
TEST2
DIF1/RX6
AVSS
DIF2/RX7
IPS1/IIC
P/SN
XTL0
XTL1
VIN
+
C
RX3
AVSS
RX2
TEST1
RX1
AVSS
RX0
AVSS
VCOM
R
AVDD
INT1
48
47
46
45
44
43
42
41
40
39
38
37
RX
SDTI
AVDD
R13
470
J5
BNC RX
D
LRCK
+
0.1u
TORX141
2
3
2
Document Number
AKD4556-B
Friday, August 25, 2006
Sheet
1
Rev
1
DIT/DIR
2
of
2
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