AK5381VT

ASAHI KASEI
[AKD5381-B]
AKD5381-B
AK5381 Evaluation Board Rev.1
GENERAL DESCRIPTION
AKD5381-B is an evaluation board for the digital audio 24bit 96kHz A/D converter, AK5381. AKD5381-B
has analog input circuits and a digital interface transmitter,and can achieve the interface with digital audio
systems via opt-connector.
„ Ordering guide
AKD5381-B
---
AK5381 Evaluation Board
FUNCTION
• DIT (AK4114) with optical output
VA,VD
AGND,DGND
LIN
RIN
AK4114
(DIT)
AK5381
Opt
Out
DSP Data
10pin Header
Figure 1. AKD5381-B Block Diagram
* Circuit diagram and PCB layout are attached at the end of this manual.
<KM074702>
2006/04
-1-
ASAHI KASEI
[AKD5381-B]
1. Evaluation Board Manual
„ Operation sequence
1) Set up the power supply lines.
[VA]
(red)
= 2.7 ∼ 5.5V or +15V
[VD]
(orange) = 2.7 ∼ 5.5V
[VCC]
(red)
= 3.3V
[AGND] (black)
= 0V
[DGND] (black)
= 0V
: for VA of AK5381 (typ. 5.0V)
: for VD of AK5381, 74HC14 (typ. 5.0V)
: for AK4114
: for analog ground
: for logic ground
Each supply line should be distributed from the power supply unit.
2) Set up the evaluation mode, jumper pins and DIP switches. (See the followings.)
3) Power on.
The AK5381 and AK4114 should be reset once bringing SW2 = “L” upon power-up.
„ Evaluation mode
(1) Slave Mode
(1-1) A/D evaluation using DIT function of AK4114
PORT2 (DIT) is used. DIT generates audio bi-phase signal from received data and which is output through
optical connector (TOTX141). It is possible to connect AKM’s D/A converter evaluation boards on the
digital-amplifier, which equips DIR input. Nothing should be connected to PORT1 (DSP).
JP5
MCLK
(1-2) All interface signals including master clock are fed externally.
PORT1 (DSP) is used. All interface signals (MCLK, SCLK, LRCK) are provided to the AK5381 through
PORT1. JP5 (MCLK) should be open. The DIF1 of SW1 (MODE) should be set to “H”.
JP5
MCLK
<KM074702>
2006/04
-2-
ASAHI KASEI
[AKD5381-B]
(2) Master Mode
(2-1) A/D evaluation using DIT function of AK4114
PORT2 (DIT) is used. DIT generates audio bi-phase signal from received data and which is output through
optical connector (TOTX141). It is possible to connect AKM’s D/A converter evaluation boards on the
digital-amplifier, which equips DIR input. Nothing should be connected to PORT1 (DSP). The DIF1 of SW1
(MODE) should be set to “H”.
JP5
MCLK
(2-2) Master clock is fed externally.
PORT1 (DSP) is used. MCLK is provided to the AK5381 through PORT1. JP5 (MCLK) should be open. The
DIF1 of SW1 (MODE) should be set to “H”.
JP5
MCLK
„ Other jumper pins set up
1. JP1 (GND) : Analog ground and Digital ground
OPEN : Separated.
SHORT : Common. (The connector “DGND” can be open.) <Default>
2. JP2 (CKS1) : Setting of CKS1 pin for AK5381
H : Master mode
L : Slave mode <Default>
3. JP3 (VA) : Select VA for AK5381
VA : Supply from VA connector <Default>
REG : Supply from regulator. VA connector should be supplied +15V.
4. JP4 (VD) : Select VD for AK5381
VA : Supply from VA connector
VD : Supply from VD connector <Default>
<KM074702>
2006/04
-3-
ASAHI KASEI
[AKD5381-B]
„ DIP Switch set up
[SW1] (MODE1): Setting the evaluation mode for AK5381 and AK4114
ON is “H”, OFF is “L”. CKS1 should be set by JP2.
No.
1
2
3
4
CKS2
L
L
L
L
H
H
H
H
CKS1
L
L
H
H
L
L
H
H
CKS0
L
H
L
H
L
H
L
H
Name
CKS0
CKS2
DIF
DIF1
Input Level
CMOS
CMOS
CMOS
CMOS
TTL
OFF (“L”)
ON (“H”)
See Table 2
MSB justified
AK4114 Master mode
Table 1. Mode Setting
I2S Compatible
AK4114 Slave mode
HPF
ON
OFF
ON
ON
ON
Master/Slave
MCLK
Slave
256/384/512/768fs
Slave
256/384/512/768fs
Master
256fs (∼ 96kHz)
Master
512fs (∼ 48kHz)
Slave
256/384/512/768fs
Reserved
CMOS
ON
Master
384fs (∼ 96kHz)
CMOS
ON
Master
768fs (∼ 48kHz)
Table 2. Mode Setting of AK5381
SCLK
≥ 48fs or 32fs
≥ 48fs or 32fs
64fs
64fs
≥ 48fs or 32fs
64fs
64fs
Note: AK4114 does not support MCLK=384fs/512fs/768fs.
PORT1 (DSP) should be used when MCLK=384fs/512fs/768fs.
„ The function of the toggle SW
Upper-side is “H” and lower-side is “L”.
[SW2] (PDN): Resets the AK5381 and AK4114. Keep “H” during normal operation.
<KM074702>
2006/04
-4-
ASAHI KASEI
[AKD5381-B]
„ Analog Input Circuits
Analog signal is input via J1(RIN) and J2(LIN) of RCA connectors.
J1
RIN
C1
10u
+
AINR
J2
LIN
C2
10u
+
AINL
Figure 2. Analog Input circuits
* AKM assumes no responsibility for the trouble when using the circuit examples.
<KM074702>
2006/04
-5-
ASAHI KASEI
[AKD5381-B]
MEASUREMENT RESULTS
[Measurement condition]
• Measurement unit : Audio Precision, System Two Cascade
• MCLK
: 256fs
• SCLK
: 64fs
: 48kHz, 96kHz
• fs
: 24bit
• Bit
: VA = VD = 5.0V (Using regulator)
• Power Supply
• Interface
: DIT
• Temperature
: Room
Parameter
ADC Analog Input Characteristics:
fs=48kHz
S/(N+D) (−1dB Input)
fs=96kHz
fs=48kHz, A-weighted
D-Range (−60dB Input)
fs=96kHz
S/N
fs=48kHz, A-weighted
fs=96kHz
Interchannel Isolation
<KM074702>
Result (Lch / Rch)
Unit
89.0 / 88.4
86.9 / 86.2
102.7 / 102.4
99.2 / 99.2
102.8 / 102.8
99.4 / 99.4
123.6 / 123.8
dB
dB
dB
dB
dB
dB
dB
2006/04
-6-
ASAHI KASEI
[AKD5381-B]
[ADC Plot : fs=48kHz]
AKM
AK5381 THD+N vs. Input Level
VA=VD=5.0V, fs=48kHz, fin=1kHz
-70
-75
-80
-85
-90
d
B
F
S
-95
-100
-105
-110
-115
-120
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
dBr
Figure 1. THD+N vs. Input Level
AKM
AK5381 THD+N vs. Input Frequency
VA=VD=5.0V, fs=48kHz, Input=-1dBr
-70
-75
-80
-85
-90
d
B
F
S
-95
-100
-105
-110
-115
-120
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 2. THD+N vs. Input Frequency
<KM074702>
2006/04
-7-
ASAHI KASEI
[AKD5381-B]
AKM
AK5381 Linearity
VA=VD=5.0V, fs=48kHz, fin=1kHz
+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 3. Linearity
AKM
AK5381 Frequency Response
VA=VD=5.0V, fs=48kHz, Input=-1dBr
-0.5
-0.6
-0.7
-0.8
-0.9
d
B
F
S
-1
-1.1
-1.2
-1.3
-1.4
-1.5
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 4. Frequency Response
<KM074702>
2006/04
-8-
ASAHI KASEI
[AKD5381-B]
AKM
AK5381 Crosstalk
VA=VD=5.0V, fs=48kHz, Input=-1dBr
-70
-75
-80
-85
-90
-95
-100
-105
d
B
-110
-115
-120
-125
-130
-135
-140
-145
-150
20
50
100
200
500
1k
2k
5k
10k
20k
5k
10k
20k
Hz
Figure 5. Crosstalk
AKM
AK5381 FFT Plot
VA=VD=5.0V, fs=48kHz, Input=-1dBr, fin=1kHz
+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 6. FFT Plot
<KM074702>
2006/04
-9-
ASAHI KASEI
[AKD5381-B]
AKM
AK5381 FFT Plot
VA=VD=5.0V, fs=48kHz, Input=-60dBr, fin=1kHz
+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
2k
5k
10k
20k
Hz
Figure 7. FFT Plot
AKM
AK5381 FFT Plot
VA=VD=5.0V, fs=48kHz, fin=None
+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
Hz
Figure 8. FFT Plot
<KM074702>
2006/04
- 10 -
ASAHI KASEI
[AKD5381-B]
[ADC Plot : fs=96kHz]
AKM
AK5381 THD+N vs. Input Level
VA=VD=5.0V, fs=96kHz, fin=1kHz
-70
-72.5
-75
-77.5
-80
-82.5
-85
-87.5
-90
d
B
F
S
-92.5
-95
-97.5
-100
-102.5
-105
-107.5
-110
-112.5
-115
-117.5
-120
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
dBr
Figure 9. THD+N vs. Input Level
AKM
AK5381 THD+N vs. Input Frequency
VA=VD=5.0V, fs=96kHz, Input=-1dBr
-70
-72.5
-75
-77.5
-80
-82.5
-85
-87.5
-90
d
B
F
S
-92.5
-95
-97.5
-100
-102.5
-105
-107.5
-110
-112.5
-115
-117.5
-120
20
50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
Figure 10. THD+N vs. Input Frequency
<KM074702>
2006/04
- 11 -
ASAHI KASEI
[AKD5381-B]
AKM
AK5381 Linearity
VA=VD=5.0V, fs=96kHz, fin=1kHz
+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 11. Linearity
AKM
AK5381 Frequency Response
VA=VD=5.0V, fs=96kHz, Input=-1dBr
-0.5
-0.55
-0.6
-0.65
-0.7
-0.75
-0.8
-0.85
-0.9
d
B
F
S
-0.95
-1
-1.05
-1.1
-1.15
-1.2
-1.25
-1.3
-1.35
-1.4
-1.45
-1.5
20
50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
Figure 12. Frequency Response
<KM074702>
2006/04
- 12 -
ASAHI KASEI
[AKD5381-B]
AKM
AK5381 Crosstalk
VA=VD=5.0V, fs=96kHz, Input=-1dBr
-70
-75
-80
-85
-90
-95
-100
-105
d
B
-110
-115
-120
-125
-130
-135
-140
-145
-150
20
50
100
200
500
1k
2k
5k
10k
20k
40k
5k
10k
20k
40k
Hz
Figure 13. Crosstalk
AKM
AK5381 FFT Plot
VA=VD=5.0V, fs=96kHz, Input=-1dBr, fin=1kHz
+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 14. FFT Plot
<KM074702>
2006/04
- 13 -
ASAHI KASEI
[AKD5381-B]
AKM
AK5381 FFT Plot
VA=VD=5.0V, fs=96kHz, Input=-60dBr, fin=1kHz
+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 15. FFT Plot
AKM
AK5381 FFT Plot
VA=VD=5.0V, fs=96kHz, fin=None
+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 16. FFT Plot
<KM074702>
2006/04
- 14 -
ASAHI KASEI
[AKD5381-B]
Revision History
Date
(YY/MM/DD)
04/05/14
05/01/14
Manual
Revision
KM074700
KM074701
Board
Revision
06/04/24
KM074702
1
Reason
Contents
First Edition
0
Board Name Change
Circuit Change
Error Correction
AKD5381 Rev.BÆAKD5381-B Rev.0
The information on AK5357 was removed.
Board Rev: 0Æ1
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.
<KM074702>
2006/04
- 15 -
A
B
C
E
DGND
J1
RIN
JP1
GND
D
E
E
AGND
C1
10u
+
VD
SW1
J2
LIN
1
2
3
4
U1
C2
10u
8
7
6
5
CKS0
CKS2
DIF
DIF1
RP1
MODE
+
1
AINR
CKS0
16
2
AINL
CKS2
15
3
CKS1
DIF
14
4
VCOM
PDN
13
AGND
SCLK
4
3
2
1
D
DIF1
D
47k
L
JP2
CKS1
VA
VA
T1
NJM78M05FA
JP3
REG
H
C3
2.2u
+
C4
0.1u
2
1
C7
0.1u
OUT
5
3
REG
+
C8
47u
C5
10u
C9
0.1u
+
+
R3
5.1
7
C
C11
10u
VA
VD
LRCK
VA
8
DGND
SDTO
51
R2
51
R4
51
R5
51
SCLK
11
MCLK
10
+ C12
0.1u
JP4
VD
LRCK
9
C
SDTO
AK5381
VD
VD
MCLK
R1
12
C6
0.1u
6
2
C10
47u
IN
GND
REG
1
DIF0
1
VD
+
1
2
2
C13
47u
D1
HSU119
R6
10k
U2A
74HC14
1
B
U2B
74HC14
3
4
B
PDN
1
H
3
L
2
C14
0.1u
2
SW2
PDN
6
VD
5
U2C
74HC14
for 74HC14
8
C15
0.1u
9
U2D
74HC14
10
11
U2E
74HC14
12
A
13
A
U2F
74HC14
Title
Size
A3
Date:
A
B
C
D
AKD5381-B
Document Number
Rev
AK5381
Monday, April 24, 2006
Sheet
E
1
1
of
2
A
B
C
D
E
VCC
REG
E
E
+
+ C16
47u
C17
10u
C18
0.1u
DIF0
1
IPS0
2
D
INT1
AVDD
R
38
39
40
VCOM
41
AVSS
42
RX0
43
NC
44
RX1
45
TEST1
46
RX2
RX3
NC
48
47
+
D
37
C19
0.47u
INT0
36
NC
OCKS0
35
3
DIF0
OCKS1
34
4
TEST2
CM1
33
DIF1
CM0
MCLK
SCLK
PORT1
5
DIF1
C
LRCK
U3
7
AK4114
NC
PDN
31
PDN
C20 10p
30
DIF2
XTI
IPS1
XTO
9
P/SN
DAUX
28
10
XTL0
MCKO2
27
11
XTL1
BICK
26
12
VIN
SDTO
25
1
2
3
4
5
10
9
8
7
6
C
DSP
SDTO
1
6
MCLK
SCLK
LRCK
SDTO
32
29
2
X1
12.288MHz
8
C24
10u
C25
10u
LRCK
B
24
MCKO1
23
22
DVSS
DVDD
C23
0.1u
+
21
VOUT
20
UOUT
19
COUT
18
BOUT
17
TX1
16
TX0
15
14
C22
0.1u
+
13
TVDD
B
DVSS
C21
10p
JP5
MCLK
PORT2
A
IN
VCC
3
2
GND
1
A
C26
0.1u
DIT
Title
Size
A3
Date:
A
B
C
D
AKD5381-B
Document Number
Rev
AK4114
Monday, April 24, 2006
Sheet
E
1
2
of
2
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