AK4420VT

[AKD4420-SC]
AKD4420-SC
AK4420 Evaluation Board Rev.2
General Description
AKD4420-SC is an evaluation board for AK4420 (192kHz sampling 24Bit StereoΔΣDAC with 2Vrms
Output). AKD4420-SC 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 AK4420.
„ Ordering Guide
AKD4420-SC ---- AK4420 Evaluation Board
Function
□ On-board digital audio interface. (AK4115)
REG:12V->3.3V VCC:3.3V REG:12V->5V
VDD:5V CVDD:5V
BNC Connector
Lch
COAX In
AK4115
AK4420
Opt In
TORX141
BNC Connector
Rch
DIR
Port2
External
Figure 1. AKD4420-SC Block diagram
(* Circuit diagram are attached at the end of this manual.)
KM091904
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2009/07
[AKD4420-SC]
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. AKD4420-SC 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.
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2009/07
[AKD4420-SC]
„ 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
+5V
CVDD1
Red
AGND2
REG
(Note 2)
Using
Default Setting
Connected to +12V
+4.5∼+5.5V
AVDD, DVDD, TVDD, OVDD of
AK4115 and VCC of Logic circuit
(Regulator:T2)
VDD of AK4420
+5V
+4.5∼+5.5V
CVDD of AK4420
Connected to +5V
Black
0V
0V
Ground
Connected to GND
(Should be connected)
Red
+12V
+7V~+15V
VDD, CVDD of AK4420
(Regulator:T1)
Open
Connected to +5V
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 AK4420 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 AK4420 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 AK4420 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.
KM091904
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2009/07
[AKD4420-SC]
„ Setting of DIP switch
[SW1]: AK4115 setting
No.
Pin
1
2
OCKS0
OCKS1
OCKS1
0
1
1
OCKS0
0/1
0
1
OFF (“L”)
ON (“H”)
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
OFF
ON
Default
Table 3. MCLK clock setting
„ Setting of SW2 switch
[SW2](PDN): Reset of AK4115. Keep “H” during normal operation.
KM091904
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2009/07
[AKD4420-SC]
Measurement Results
[Measurement condition]
• Measurement unit
• MCLK
• BICK
• fs
• Bit
• Power Supply
• Interface
• Temperature
: Audio Precision System two Cascade (AP2)
: 512fs, 256fs, 128fs
: 64fs
: 44.1kHz, 96kHz, 192kHz
: 24bit
: VDD=CVDD=5V
: DIR
: Room
Table Data
fs=44.1kHz
Parameter
S/(N+D)
DR
S/N
Input signal
1kHz, 0dB
1kHz, -60dB
“0” data
Measurement filter
20kLPF
20kLPF, A-weighted
20kLPF, A-weighted
fs=96kHz
Parameter
S/(N+D)
DR
S/N
Input signal
1kHz, 0dB
1kHz, -60dB
“0” data
Measurement filter
40kLPF
40kLPF, A-weighted
40kLPF, A-weighted
fs=192kHz
Parameter
S/(N+D)
DR
S/N
Input signal
1kHz, 0dB
1kHz, -60dB
“0” data
Measurement filter
40kLPF
40kLPF, A-weighted
40kLPF, A-weighted
KM091904
- 5 -
Lch
92.3
105.1
106.0
Lch
92.2
105.7
105.9
Lch
93.0
105.2
105.4
Rch
92.3
105.1
105.7
Rch
92.2
105.3
105.7
Rch
92.8
105.1
105.3
2009/07
[AKD4420-SC]
Plot Data
(fs=44.1kHz)
AKM
AK4420 FFT
VDD=CVDD=5V, MCLK=512fs, fs=44.1kHz, 0dBFS 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 2. FFT (0dB)
AKM
AK4420 FFT
VDD=CVDD=5V, MCLK=512fs, fs=44.1kHz, -60dBFS 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
Hz
Figure 3. FFT (-60dB)
KM091904
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2009/07
[AKD4420-SC]
AKM
AK4420 FFT
VDD=CVDD=5V, MCLK=512fs, fs=44.1kHz, No signal 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
20k
50k
100k
Hz
Figure 4. FFT (No Signal)
AKM
AK4420 FFT Out of Band Noise
VDD=CVDD=5V, MCLK=512fs, fs=44.1kHz, No signal 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
Hz
Figure 5. FFT (Out of Band Noise)
KM091904
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2009/07
[AKD4420-SC]
AKM
AK4420 S/(N+D) vs. Input Level
VDD=CVDD=5V, MCLK=512fs, fs=44.1kHz, fin=1kHz
-80
-82
-84
-86
-88
-90
-92
-94
-96
d
B
r
A
-98
-100
-102
-104
-106
-108
-110
-112
-114
-116
-118
-120
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Figure 6. S/(N+D) vs. Input Level
AKM
AK4420 S/(N+D) vs. Input Frequency
VDD=CVDD=5V, MCLK=512fs, fs=44.1kHz, 0dBFS Input
-80
-82
-84
-86
-88
-90
-92
-94
-96
d
B
r
A
-98
-100
-102
-104
-106
-108
-110
-112
-114
-116
-118
-120
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 7. S/(N+D) vs. Input Frequency
KM091904
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2009/07
[AKD4420-SC]
AKM
AK4420 Linearity
VDD=CVDD=5V, MCLK=512fs, fs=44.1kHz, fin=1kHz
+0
-10
-20
-30
-40
-50
d
B
r
-60
-70
A
-80
-90
-100
-110
-120
-130
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Figure 8. Linearity
AKM
AK4420 Frequency Response
VDD=CVDD=5V, MCLK=512fs, fs=44.1kHz, 0dBFS Input
+1
+0.8
+0.6
+0.4
+0.2
+0
-0.2
d
B
r
-0.4
-0.6
A
-0.8
-1
-1.2
-1.4
-1.6
-1.8
-2
2k
4k
6k
8k
10k
12k
14k
16k
18k
20k
Hz
Figure 9. Frequency Response
KM091904
- 9 -
2009/07
[AKD4420-SC]
AKM
AK4420 Crosstalk
VDD=CVDD=5V, MCLK=512fs, fs=44.1kHz, 0dBFS Input
-80
-85
-90
-95
-100
d
B
-105
-110
-115
-120
-125
-130
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 10. Crosstalk
KM091904
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2009/07
[AKD4420-SC]
(fs=96kHz)
AKM
AK4420 FFT
VDD=CVDD=5V, MCLK=256fs, fs=96kHz, 0dBFS Input
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
A
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
40
50
100
200
500
1k
2k
5k
10k
20k
40k
10k
20k
40k
Hz
Figure 11. FFT (0dB)
AKM
AK4420 FFT
VDD=CVDD=5V, MCLK=256fs, fs=96kHz, -60dBFS Input
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
A
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
40
50
100
200
500
1k
2k
5k
Hz
Figure 12. FFT (-60dB)
KM091904
- 11 -
2009/07
[AKD4420-SC]
AKM
AK4420 FFT
VDD=CVDD=5V, MCLK=256fs, fs=96kHz, No signal Input
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
A
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
40
50
100
200
500
1k
2k
5k
10k
20k
40k
50k
100k
Hz
Figure 13. FFT (No Signal)
AKM
AK4420 FFT Out of Band Noise
VDD=CVDD=5V, MCLK=256fs, fs=96kHz, No signal 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
Hz
Figure 14. FFT (Out of Band Noise)
KM091904
- 12 -
2009/07
[AKD4420-SC]
AKM
AK4420 S/(N+D) vs. Input Level
VDD=CVDD=5V, MCLK=256fs, fs=96kHz, fin=1kHz
-80
-82
-84
-86
-88
-90
-92
-94
-96
d
B
r
A
-98
-100
-102
-104
-106
-108
-110
-112
-114
-116
-118
-120
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Figure 15. S/(N+D) vs. Input Level
AKM
AK4420 S/(N+D) vs. Input Frequency
VDD=CVDD=5V, MCLK=256fs, fs=96kHz, 0dBFS Input
-80
-82
-84
-86
-88
-90
-92
-94
-96
d
B
r
A
-98
-100
-102
-104
-106
-108
-110
-112
-114
-116
-118
-120
40
50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
Figure 16. S/(N+D) vs. Input Frequency
KM091904
- 13 -
2009/07
[AKD4420-SC]
AKM
AK4420 Linearity
VDD=CVDD=5V, MCLK=256fs, fs=96kHz, fin=1kHz
+0
-10
-20
-30
-40
-50
d
B
r
-60
-70
A
-80
-90
-100
-110
-120
-130
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Figure 17. Linearity
AKM
AK4420 Frequency Response
VDD=CVDD=5V, MCLK=256fs, fs=96kHz, 0dBFS Input
+1
+0.8
+0.6
+0.4
+0.2
+0
-0.2
d
B
r
-0.4
-0.6
A
-0.8
-1
-1.2
-1.4
-1.6
-1.8
-2
2.5k
5k
7.5k
10k
12.5k
15k
17.5k
20k
22.5k
25k
27.5k
30k
32.5k
35k
37.5k
40k
Hz
Figure 18. Frequency Response
KM091904
- 14 -
2009/07
[AKD4420-SC]
AKM
AK4420 Crosstalk
VDD=CVDD=5V, MCLK=256fs, fs=96kHz, 0dBFS Input
-80
-85
-90
-95
-100
d
B
-105
-110
-115
-120
-125
-130
40
50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
Figure 19. Crosstalk
KM091904
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2009/07
[AKD4420-SC]
(fs=192kHz)
AKM
AK4420 FFT
VDD=CVDD=5V, MCLK=128fs, fs=192kHz, 0dBFS Input
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
A
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
90
200
500
1k
2k
5k
10k
20k
50k
80k
20k
50k
80k
Hz
Figure 20. FFT (0dB)
AKM
AK4420 FFT
VDD=CVDD=5V, MCLK=128fs, fs=192kHz, -60dBFS Input
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
A
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
90
200
500
1k
2k
5k
10k
Hz
Figure 21. FFT (-60dB)
KM091904
- 16 -
2009/07
[AKD4420-SC]
AKM
AK4420 FFT
VDD=CVDD=5V, MCLK=128fs, fs=192kHz, No signal Input
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
A
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
90
200
500
1k
2k
5k
10k
20k
50k
80k
Hz
Figure 22. FFT (No Signal)
AKM
AK4420 FFT Out of Band Noise
VDD=CVDD=5V, MCLK=128fs, fs=192kHz, No signal 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
100k
Hz
Figure 23. FFT (Out of Band Noise)
KM091904
- 17 -
2009/07
[AKD4420-SC]
AKM
AK4420 S/(N+D) vs. Input Level
VDD=CVDD=5V, MCLK=128fs, fs=192kHz, fin=1kHz
-80
-82
-84
-86
-88
-90
-92
-94
-96
d
B
r
A
-98
-100
-102
-104
-106
-108
-110
-112
-114
-116
-118
-120
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Figure 24. S/(N+D) vs. Input Level
AKM
AK4420 S/(N+D) vs. Input Frequency
VDD=CVDD=5V, MCLK=128fs, fs=192kHz, 0dBFS Input
-80
-82
-84
-86
-88
-90
-92
-94
-96
d
B
r
A
-98
-100
-102
-104
-106
-108
-110
-112
-114
-116
-118
-120
90
200
500
1k
2k
5k
10k
20k
50k
80k
Hz
Figure 25. S/(N+D) vs. Input Frequency
KM091904
- 18 -
2009/07
[AKD4420-SC]
AKM
AK4420 Linearity
VDD=CVDD=5V, MCLK=128fs, fs=192kHz, fin=1kHz
+0
-10
-20
-30
-40
-50
d
B
r
-60
-70
A
-80
-90
-100
-110
-120
-130
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Figure 26. Linearity
AKM
AK4420 Frequency Response
VDD=CVDD=5V, MCLK=128fs, fs=192kHz, 0dBFS Input
+1
+0.8
+0.6
+0.4
+0.2
+0
-0.2
d
B
r
-0.4
-0.6
A
-0.8
-1
-1.2
-1.4
-1.6
-1.8
-2
5k
10k
15k
20k
25k
30k
35k
40k
45k
50k
55k
60k
65k
70k
75k
80k
Hz
Figure 27. Frequency Response
KM091904
- 19 -
2009/07
[AKD4420-SC]
AKM
AK4420 Crosstalk
VDD=CVDD=5V, MCLK=128fs, fs=192kHz, 0dBFS Input
-80
-85
-90
-95
-100
d
B
-105
-110
-115
-120
-125
-130
90
200
500
1k
2k
5k
10k
20k
50k
80k
Hz
Figure 28. Crosstalk
KM091904
- 20 -
2009/07
[AKD4420-SC]
REVISION HISTORY
Date
Manual
(yy/mm/dd) Revision
08/01/15 KM091900
08/02/25 KM091901
Board
Revision
0
1
Reason
Page
Contents
First Edition
Change
12
Circuit diagram was changed. : Regulator: T2:
TA48033FÆuPC3533HF
Figure 1. Block diagram was replaced.
Table 1. Set up of power supply lines was replaced.
Set up of power supply lines and setting of evaluation mode:
error correction
Table 1. Set up of power supply lines:Explanation changed.
Note 1, Note 2: Explanation changed.
Circuit diagram was changed. :
R34,R35: open Æ short
R36: short Æ open
Circuit diagram was changed. :
SW1: DSS102 Æ A6E-2104
Update of measurement results and Plots.
1
3
Correction
08/08/22
KM091902
2
Change
3
12
09/04/17
KM091903
2
Change
12
09/07/09
KM091904
2
Modification
5-20
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.
KM091904
- 21 -
2009/07
A
B
C
VCC_R
VCC_R
D
E
VCC_R
C24
10u
R45
+
E
1
R7
VDD
VDD
17
B
34
ELRCK
SDTO
51
MCLK
BICK
5
MCLK
BICK
C14
15
51
2
1
37
OVSS
CM0/CDTO/CAD1
OVDD
R27
10u
(open)
R40
CVDD
TEST1
10
BICK
VSS1
12
SDTI
VDD
11
U1
AK4420
DZF
J1
VSS1
C5
C6
R28
C15
0.1u
10u
(open)
(open)
R3
VDD
VDD
560
R14
51
7
LRCK
AOUTL
10
8
DIF
AOUTR
9
AOUTL
C7
13
12
DIF
R15
R16
R17
R18
(open)
(open)
(open)
(open)
OCKS1
R24
47k
47k
(short)
38
CM1/CDTI/SDA
MCKO2
11
39
OCKS1/CCLK/SCL
MCKO1
10
VCC_R
+
U2
OCKS0/CSN/CAD0
41
DVDD
42
DVSS
DVSS
9
DAUX
8
VIN
7
6
7
8
9
10
5
4
3
2
1
AOUTR
C8
2.2nF
(open)
R4
R6
(short)
AGND
VCC_R
DVDD
(short)
BNC-R-PC
2ROUT
3
4
5
R2
C10
C12
(open)
2.2nF
(open)
(short)
R9
BVSS
D
J2
1
A1-10PA-2.54DSA
DSP
VDD
VDD
C20
0.1u
43
3
4
5
(open)
560
C32
0.1u
C33
10u
BNC-R-PC
2LOUT
C11
(short)
SDTO
LRCK
BICK
MCLK
R10
AK4115
1
C9
PORT2
40
R23
R5
R1
4
L
OCKS0 3
D
INT1
13
(open)
LRCK
36
SW1
A6E-2104
CVDD
14
TEST3
H
C4
14
CVDD
DZF
(open)
STDI
INT0
SMUTE
4
6
35
(open)
C3
5.1
C13
R13
VSS2
0.1u
3
SMUTE
5.1
TEST2
1u
15
VSS2
(short)
16
R12
R41
+
LRCK
CP
C2
+
18
19
U
C
20
21
TVDD
TX0
VOUT
22
23
TXP1
TXN1
25
24
27
26
XTI1
TVSS
XTI2
XTO1
28
29
OVDD
XTO2
30
31
32
OVSS
EBICK
R11
EMCK
R22
AGND
VEE
+
33
C21
0.1u
16
VEE
1u
2
R8
CN
C1
(open)
+
C23
0.1u
VCC_R
(open)
C22
0.1u
+
E
R42
(open)
(open)
R39
6
VCC
5.1
VCC_R
C
44
IPS1/IIC
45
PSEL
XSEL/RX7
5
PDN
4
VCC1
R20
46
XTL0
DIF1/RX6
3
47
XTL1
TEST
2
(short)
1
L4
1
R36
(short)
C
2
VCC
(open)
T45-RED
C37
0.1u
(short)
1
R34
+12V
IPS0/RX4
1
C36
(short)
+
47u
IN
C41
2
0.1u
OUT
+3.3V
3
+
C45
0.1u
C17
47u
64
AVDD
RX3
62
63
AVSS
RX2
60
61
AVDD
59
RX1
AVSS
58
57
RXN0
RXP0
56
55
P/SN
ACKS
54
53
AVDD
52
51
50
49
R
VCOM
DIF0/RX5
AVSS
FILT
T2 +12V-->+3.3V
uPC3533HF
GND
48
R35
(short)
R21
C27
0.1u
C30
4.7u
C25
0.1u
+
T1 +12V-->+5V
NJM78M05FA
+12V
T45-RED
C29
0.1u
1
1
IN
C40
+
470u
C39
AGND2
T_45(BLACK)
3
OUT
+5V
B
C42
2
+
C38
0.1u
0.1u
47u
1
(open)
REG(+12/5V)
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
R26
D1
HSU119
R43
10k
U3
2
PORT1
2
1
TORX141
C18
0.1u
+ C19
10u
R19
H
L
(open)
SW2
C31
J3
C16
0.1u
COAX
BNC-R-PC
R33
0
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
ATE1D-2M3
A
1
3
5
9
11
13
14
7
1
GND
OUT
3
VCC
3
AK4115-PDN
74HC14
C48
0.1u
R32
75
Title
AK4420-SC
AK4420
Size
Document Number
Custom
Date:
A
B
C
D
Thursday, July 09, 2009
E
Sheet
Rev
2
1
of
1
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