AKM AKD4421A-SA

[AKD4421A-SA]
AKD4421A-SA
AK4421A Evaluation Board Rev.1
General Description
AKD4421A-SA is an evaluation board for AK4421A (192kHz sampling 24Bit StereoΔΣDAC with 2Vrms
Output). AKD4421A-SA has a digital audio interface (AK4115) of Optical input and can easily achieve the
interface with digital audio system. Therefore, it is easy to evaluate the sound quality of AK4421A.
„ Ordering Guide
AKD4421A-SA ---- AK4421A Evaluation Board
Function
□ On-board digital audio interface. (AK4115)
REG:12V->3.3V VCC:12V REG:12V->3.3V VDD:3.3V CVDD:3.3V
BNC Connector
Lch
COAX In
AK4115
AK4421A
Opt In
TORX141
BNC Connector
Rch
DIR
Port2
External
Figure 1. AKD4421A-SA Block diagram
(* Circuit diagram are attached at the end of this manual.)
KM098701
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2009/04
[AKD4421A-SA]
Board Outline Chart
„ Outline Chart
PORT1
CVDD
COAX
AGND
VDD
VCC
REG
U3
SW2
T2
T1
U2
H
LOUT
1
SW1
1
L
U1
TEST1
PORT2
ROUT
1
10
Figure 2. AKD4421A-SA Outline Chart
„ Comment
(1) LOUT, ROUT (BNC-JACK)
It is analog signal output Jack. The signal is output from LOUT/ROUT pins.
(2) COAX, PORT1, PORT2 (Digital signal connector)
COAX (BNC-JACK): Digital signal (SPDIF, Fs: 24∼48kHz) is input to the AK4115. (Default)
PORT1 (Optical Connecter): Optical digital signal (SPDIF, Fs: 32∼48kHz) is input to the AK4115.
PORT2 (10 pin header): The clock and data can be input and output with this connector.
(3) REG, VDD, AGND, CVDD, VCC
These are the power supply connectors. Connect power supply with these pins.
As for the detail comments, refer to the setup of power supply in P3.
(4) SW1, SW2 (Switch)
SW1: Setting of frequency of MCKO that is output from AK4115.
SW2: Reset of AK4115. Keep “H” during normal operation.
KM098701
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[AKD4421A-SA]
„ Operation sequence
1) Set up the power supply lines.
Each supply line should be distributed from the power supply unit.
Name
of jack
VCC1
(Note 1)
Color
of jack
Red
Typ
Voltage
+12V
Voltage
Range
+7∼+15V
VDD1
Red
+3.3V
CVDD1
Red
AGND2
REG
(Note 2)
Using
Default Setting
Connected to +12V
+3.0∼+3.6V
AVDD, DVDD, TVDD, OVDD of
AK4115 and VCC of Logic circuit
(Regulator:T2)
VDD of AK4421A
+3.3V
+3.0∼+3.6V
CVDD of AK4421A
Connected to +3.3V
Black
0V
0V
Ground
Connected to GND
(Should be connected)
Red
+12V
+7V~+15V
VDD, CVDD of AK4421A
(Regulator:T1)
Open
Connected to +3.3V
Table 1.Set up of power supply lines
Note 1 ) In case of using +3.3V power supply to connect VCC1, It is possible to supply the voltage to AK4115 and
the Logic circuit without using Regulator.
In this case, change to R36: OpenÆ Short (0Ω); R34,R35: Short (0Ω) Æ Open
Note 2 ) In case of using +12V power supply to connect REG, Use regulator: T1 can supply AK4421A with clean
voltage.
In this case, change to R25,R44: Short (0Ω)Æ Open; R37,R43:OpenÆ Short (0Ω); VDD, CVDD should
be open.
2) DIP Switch setting:
Refer to Table 2 and Table 3
3) Power Down:
The AK4115 should be reset once by bringing SW2 (AK4115 PDN) “L” upon power-up.
„ Evaluation mode
1. Using DIR (Optical Link)
The DIR generates MCLK, BICK, LRCK and SDATA from the received data through optical connector (PORT1:
TORX141). It is possible to evaluate the AK4421A by using CD disk.
Setting: R19: Open Æ470Ω; R33: short (0Ω)ÆOpen
2. Using DIR (COAX) (Default)
The DIR generates MCLK, BICK, LRCK and SDATA from the received data through BNC connector (J3). It is
possible to evaluate the AK4421A by using CD disk.
Setting: R19: Open; R33: short (0Ω); (Default)
＊ COAX is recommended for an evaluation of the Sound quality.
3. Supply all interface signals that includ master clock via PORT2 from external equipments..
Setting:
R11: 5.1ΩÆOpen
R12, R13, R14: 51ΩÆOpen
R15, R16, R17, R18: OpenÆ51Ω or short (0Ω)
Note) The above work of removing (open) or shorting resistors need to modify the connection by soldering.
KM098701
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[AKD4421A-SA]
„ Setting of DIP switch
[SW1]: AK4115 setting
No.
Pin
1
2
OCKS1
OCKS0
OCKS1
0
1
1
OCKS0
0/1
0
1
OFF
ON
AK4115’s Master Clock setting
Look Table 3
Table 2. SW1 setting
MCLK Frequency
256fs @ fs=96kHz
512fs @ fs=48kHz
128fs @ fs=192kHz
Default の状態
ON
OFF
Default
Table 3. MCLK clock setting
„ Setting of SW2 switch
[SW2](PDN): Reset of AK4115. Keep “H” during normal operation.
KM098701
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[AKD4421A-SA]
Measurement Results
[Measurement condition]
• Measurement unit
• MCLK
• BICK
• fs
• Bit
• Power Supply
• Interface
• Temperature
: Audio Precision System two Cascade (AP2)
: 512fs (fs=44.1KHz) / 256fs (fs=96KHz ) / 128fs (fs=192KHz)
: 64fs
: 44.1kHz / 96KHz / 192KHz
: 24bit
: VDD=CVDD=3.3V
: DIR
: Room
Table Data
fs=44.1kHz
Parameter
S/(N+D)
DR
S/N
Input signal
1kHz, 0dB
1kHz, -60dB
“0” data
Filter condition
20k SPCL
20k SPCL, A-weighted
20k SPCL, A-weighted
fs=96kHz
Parameter
S/(N+D)
DR
S/N
Input signal
1kHz, 0dB
1kHz, -60dB
“0” data
Filter condition
40k SPCL
40k SPCL, A-weighted
40k SPCL, A-weighted
fs=192kHz
Parameter
S/(N+D)
DR
S/N
Input signal
1kHz, 0dB
1kHz, -60dB
“0” data
Filter condition
40k SPCL
40k SPCL, A-weighted
40k SPCL, A-weighted
KM098701
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Lch
94.6
103.1
103.2
Lch
93.7
103.1
103.3
Lch
93.8
103.1
103.3
Rch
94.5
103.2
103.6
Unit
dB
dB
dB
Rch
94.2
103.3
103.5
Unit
dB
dB
dB
Rch
94.1
103.2
103.4
Unit
dB
dB
dB
2009/04
[AKD4421A-SA]
Plot Data
fs = 44.1kHz (MCLK=512fs)
AKM
FFT 0dB
fs=44.1kHz, fin=1kHz
+0
-10
-20
-30
-40
-50
-60
d
B
r
A
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
20
50
100
200
500
1k
2k
5k
10k
20k
5k
10k
20k
Hz
Figure 3 FFT (fin=1kHz, Input Level=0dBFS)
AKM
FFT -60dB
fs=44.1kHz, fin=1kHz
+0
-10
-20
-30
-40
-50
-60
d
B
r
A
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
20
50
100
200
500
1k
2k
Hz
Figure 4
KM098701
FFT (fin=1kHz, Input Level=-60dBFS)
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2009/04
[AKD4421A-SA]
AKM
FFT No Signal
fs=44.1kHz
+0
-10
-20
-30
-40
-50
-60
d
B
r
A
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 5 FFT (No Signal)
AKM
FFT Out of Band Noise
fs=44.1kHz
+0
-10
-20
-30
-40
-50
-60
d
B
r
A
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
20
50
100
200
500
1k
2k
5k
10k
20k
50k
100k
Hz
Figure 6 FFT (Out of band noise)
KM098701
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2009/04
[AKD4421A-SA]
AKM
THD + N vs Input Level
fs=44.1kHz, fin=1kHz
-80
-82.5
-85
-87.5
-90
-92.5
-95
d
B
r
A
-97.5
-100
-102.5
-105
-107.5
-110
-112.5
-115
-117.5
-120
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Figure 7 THD+N vs. Input level
AKM
THD + N vs Input Frequency
fs=44.1kHz, 0dBFS
+0
T T
-10
-20
-30
-40
-50
d
B
r
-60
A
-80
-70
-90
-100
-110
-120
-130
-140
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 8 THD+N vs. Input Frequency
KM098701
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2009/04
[AKD4421A-SA]
AKM
Linearity
fs=44.1kHz, fin=1kHz
+0
-10
-20
-30
-40
-50
d
B
r
-60
A
-80
-70
-90
-100
-110
-120
-130
-140
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Figure 9 Linearity
AKM
Frequency Response
fs=44.1kHz, 0dBFS
+5
+4
+3
+2
d
B
r
A
+1
+0
-1
-2
-3
-4
-5
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 10 Frequency Response
KM098701
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2009/04
[AKD4421A-SA]
AKM
Crosstalk
fs=44.1kHz, 0dBFS
-50
-55
-60
-65
-70
-75
-80
d
B
-85
-90
-95
-100
-105
-110
-115
-120
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 11 Crosstalk
KM098701
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2009/04
[AKD4421A-SA]
fs = 96kHz (MCLK=256fs)
AKM
FFT 0dB
fs=96kHz, fin=1kHz
+0
-10
-20
-30
-40
-50
-60
d
B
r
A
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
20
50
100
200
500
1k
2k
5k
10k
20k
5k
10k
20k
Hz
Figure 12 FFT (fin=1kHz, Input Level=0dBFS)
AKM
FFT -60dB
fs=96kHz, fin=1kHz
+0
-10
-20
-30
-40
-50
-60
d
B
r
A
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
20
50
100
200
500
1k
2k
Hz
Figure 13
KM098701
FFT (fin=1kHz, Input Level=-60dBFS)
- 11 -
2009/04
[AKD4421A-SA]
AKM
FFT No Signal
fs=96kHz
+0
-10
-20
-30
-40
-50
-60
d
B
r
A
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 14 FFT (No Signal)
AKM
FFT Out of Band Noise
fs=96kHz
+0
-10
-20
-30
-40
-50
-60
d
B
r
A
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
20
50
100
200
500
1k
2k
5k
10k
20k
50k
100k
Hz
Figure 15 FFT (Out of band noise)
KM098701
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2009/04
[AKD4421A-SA]
AKM
THD + N vs Input Level
fs=96kHz, fin=1kHz
-80
-82.5
-85
-87.5
-90
-92.5
-95
d
B
r
A
-97.5
-100
-102.5
-105
-107.5
-110
-112.5
-115
-117.5
-120
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Figure 16 THD+N vs. Input level
AKM
THD + N vs Input Frequency
fs=96kHz, 0dBFS
+0
-10
-20
-30
-40
-50
d
B
r
-60
A
-80
-70
-90
-100
-110
-120
-130
-140
20
50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
Figure 17 THD+N vs. Input Frequency
KM098701
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2009/04
[AKD4421A-SA]
AKM
Linearity
fs=96kHz, fin=1kHz
+0
-10
-20
-30
-40
-50
d
B
r
-60
A
-80
-70
-90
-100
-110
-120
-130
-140
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Figure 18 Linearity
AKM
Frequency Response
fs=96kHz, 0dBFS
+8
+7
+6
+5
+4
+3
+2
d
B
r
A
+1
+0
-1
-2
-3
-4
-5
-6
-7
-8
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 19 Frequency Response
KM098701
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2009/04
[AKD4421A-SA]
AKM
Crosstalk
fs=96kHz, 0dBFS
-50
-55
-60
-65
-70
-75
-80
d
B
-85
-90
-95
-100
-105
-110
-115
-120
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 20 Crosstalk
KM098701
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2009/04
[AKD4421A-SA]
fs = 192kHz (MCLK=128fs)
AKM
FFT 0dB
fs=192kHz, fin=1kHz
+0
-10
-20
-30
-40
-50
-60
d
B
r
A
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
20
50
100
200
500
1k
2k
5k
10k
20k
5k
10k
20k
Hz
Figure 21 FFT (fin=1kHz, Input Level=0dBFS)
AKM
FFT -60dB
fs=192kHz, fin=1kHz
+0
-10
-20
-30
-40
-50
-60
d
B
r
A
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
20
50
100
200
500
1k
2k
Hz
Figure 22 FFT (fin=1kHz, Input Level=-60dBFS)
KM098701
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2009/04
[AKD4421A-SA]
AKM
FFT No Signal
fs=192kHz
+0
-10
-20
-30
-40
-50
-60
d
B
r
A
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 23 FFT (No Signal)
AKM
FFT Out of Band Noise
fs=192kHz
+0
-10
-20
-30
-40
-50
-60
d
B
r
A
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
20
50
100
200
500
1k
2k
5k
10k
20k
50k
100k
Hz
Figure 24 FFT (Out of band noise)
KM098701
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2009/04
[AKD4421A-SA]
AKM
THD + N vs Input Level
fs=192kHz, fin=1kHz
-80
-82.5
-85
-87.5
-90
-92.5
-95
d
B
r
A
-97.5
-100
-102.5
-105
-107.5
-110
-112.5
-115
-117.5
-120
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Figure 25 THD+N vs. Input level
AKM
THD + N vs Input Frequency
fs=192kHz, 0dBFS
+0
T T
-10
-20
-30
-40
-50
d
B
r
-60
A
-80
-70
-90
-100
-110
-120
-130
-140
20
50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
Figure 26 THD+N vs. Input Frequency
KM098701
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2009/04
[AKD4421A-SA]
AKM
Linearity
fs=192kHz, fin=1kHz
+10
+0
-10
-20
-30
-40
d
B
r
A
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Figure 27 Linearity
AKM
Frequency Response
fs=192kHz, 0dBFS
+8
+7
+6
+5
+4
+3
+2
d
B
r
A
+1
+0
-1
-2
-3
-4
-5
-6
-7
-8
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 28 Frequency Response
KM098701
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2009/04
[AKD4421A-SA]
AKM
Crosstalk
fs=192kHz, 0dBFS
-50
-55
-60
-65
-70
-75
-80
d
B
-85
-90
-95
-100
-105
-110
-115
-120
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 29 Crosstalk
KM098701
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2009/04
[AKD4421A-SA]
REVISION HISTORY
Date
Manual
(yy/mm/dd) Revision
09/02/06 KM098700
09/04/23 KM098701
Board
Revision
0
1
Reason
Page
First Edition
Change
22
Change
5-20
Contents
Circuit diagram were changed.
C1, C2 : 1uF → 2.2uF
Table data and Plot data were updated.
IMPORTANT NOTICE
z These products and their specifications are subject to change without notice.
When you consider any use or application of these products, please make inquiries the sales office of Asahi Kasei
Microdevices Corporation (AKM) or authorized distributors as to current status of the products.
z AKM assumes no liability for infringement of any patent, intellectual property, or other rights in the application or use of
any information contained herein.
z 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.
z AKM products are neither intended nor authorized for use as critical componentsNote1) in any safety, life support, or other
hazard related device or systemNote2), and AKM assumes no responsibility for such use, except for the use approved with the
express written consent by Representative Director of AKM. As used here:
Note1) 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.
Note2) 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.
z It is the responsibility of the buyer or distributor of AKM products, who distributes, disposes of, or otherwise places the
product with a third party, to notify such third 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.
KM098701
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2009/04
A
B
C
VCC-R
VCC-R
D
E
VCC-R
C24
10u
R45
R42
+
(open)
(open)
E
E
C22
0.1u
R7
VDD
R11
16
2
CP
VSS2
15
2.2u
EMCK
LRCK
16
SDTO
15
ELRCK
SMUTE
MCLK
R12
51
R13
51
INT0
BICK
2
1
SW1
DSS102
INT1
37
CM0/CDTO/CAD1
OVDD
CVDD
R27
10u
(open)
TEST1
MCLK
DZF
BICK
VSS1
12
6
SDTI
VDD
11
J1
VSS1
C5
C6
R28
C15
0.1u
10u
(open)
(open)
R3
VDD
VDD
51
7
LRCK
AOUTL
10
8
DIF
AOUTR
9
AOUTL
C7
13
12
DIF
R15
R16
R17
R18
(open)
(open)
(open)
(open)
CVDD
10
13
U1 DZF
AK4421A
14
R14
R40
560
R24
47k
47k
(short)
38
VCC-R
+
CM1/CDTI/SDA
39
OCKS1/CCLK/SCL
40
OCKS0/CSN/CAD0
41
DVDD
42
DVSS
U2
MCKO2
11
MCKO1
10
DVSS
6
7
8
9
10
5
4
3
2
1
8
2.2nF
(open)
C8
R4
R6
(short)
(short)
J2
560
VIN
7
AGND
VCC-R
C32
0.1u
C33
10u
BVSS
44
IPS1/IIC
45
PSEL
DVDD
6
XSEL/RX7
5
PDN
4
(short)
1
BNC-R-PC
2ROUT
3
4
5
R2
C10
C12
(open)
2.2nF
(open)
(short)
R9
VDD
VDD
C20
0.1u
43
3
4
5
(open)
A1-10PA-2.54DSA
DSP
9
DAUX
BNC-R-PC
2LOUT
C11
D
AOUTR
SDTO
LRCK
BICK
MCLK
R10
AK4115
1
C9
PORT2
OCKS1
R23
R5
R1
4
L
OCKS0 3
OVSS
CVDD
(open)
LRCK
36
H
C4
14
5
BICK
C14
TEST3
D
SMUTE
(open)
STDI
35
(open)
C3
5.1
C13
TEST2
R41
2.2u
0.1u
3
5.1
34
C2
+
33
VSS2
(short)
4
R22
VEE
C1
(open)
+
18
17
B
C
19
U
VOUT
21
TVDD
20
23
22
TX0
25
24
TXP1
TXN1
XTI1
TVSS
26
27
XTO1
29
28
XTI2
30
XTO2
OVSS
OVDD
32
EBICK
AGND
VEE
+
VCC-R
R8
C21
0.1u
CN
+
31
VDD
1
+
C23
0.1u
(open)
R39
VCC
5.1
VCC-R
C
C
VCC1
R20
46
XTL0
DIF1/RX6
3
47
XTL1
TEST
2
(short)
1
L4
1
R36
(short)
2
VCC
(open)
T45-RED
C37
0.1u
R34
+12V
1
IPS0/RX4
AVDD
1
C36
(short)
+
47u
IN
C41
OUT
2
0.1u
+3.3V
3
+
C45
0.1u
C17
47u
64
63
RX3
AVSS
62
RX2
60
61
AVDD
59
RX1
AVSS
58
57
RXN0
ACKS
RXP0
56
55
54
P/SN
53
AVDD
52
51
50
49
R
VCOM
DIF0/RX5
AVSS
FILT
T2 +12V-->+3.3V
uPC3533HF
(short)
GND
48
R35
(short)
R21
C27
0.1u
C30
4.7u
C25
0.1u
+
T1 +12V-->+3.3V
uPC3533HF
1
T45-RED
C29
0.1u
1
IN
C40
+
470u
C39
0.1u
OUT
3
AGND2
T_45(BLACK)
C42
2
B
+3.3V
+
C38
0.1u
47u
1
(open)
+12V
REG
1
VCC-R
2
R30
1
(open)
B
VCC-R
C26
10u
GND
+
R29
2
R31
10k
+
AGND
C28
10u
R37
R38
VCC
VDD1
(short)
L2
1 1
R25
(short)
2
VDD
T45-RED
VCC
(open)
C35
470u
+
(short)
C34
0.1u
K
1
VCC
L1
A
47u
A
R43
10k
U3
3
0.1u
10u
R19
L
(open)
H
1
C18
+ C19
3
GND 2
OUT 1
TORX141
SW2
C31
ATE1D-2M3
J3
COAX
BNC-R-PC
C16
0.1u
R33
0
1
3
5
9
11
13
14
7
0.1u
VCC
1A
2A
3A
4A
5A
6A
VCC
GND
1Y
2Y
3Y
4Y
5Y
6Y
CVDD1
2
4
6
8
10
12
L3
1 1
R44
(short)
2
C44
470u
+
(open)
CVDD
T45-RED
(short)
C43
0.1u
A
2
VCC
R26
D1
HSU119
2
PORT1
74HC14
AK4115-PDN
C48
0.1u
R32
75
Title
Size
Document Number
AKD4421A-SA
AK4421A
Date:
A
B
C
- 22 -
D
Sheet
E
1
of
Rev
1
1