AKM AKD4394_07

ASAHI KASEI
[AKD4394]
AKD4394
Evaluation board Rev.C for AK4394
General Description
The AKD4394 is an evaluation board for AK4394, which is 192kHz sampling 24Bit ∆Σ DAC. The AKD4394 includes
a LPF which can add differential analog outputs from the AK4394 and also has a digital interface with AKM’s wave
generator using ROM data and AKM’s ADC evaluation boards. Therefore, it is easy to evaluate the AK4394.
Ordering Guide
AKD4394 Rev.C
--- Evaluation board Rev.C for AK4394: differential output
Function
On-board differential output buffer circuit
On-board clock generator
BNC connector for an external clock input
Compatible with 3types of interface
1.
2.
3.
Direct interface with evaluation boards for AKM’s A/D converter (AKD539X, AKD535X)
Interface with a signal generator (AKD43XX)
On-board CS8414 as DIR which accepts optical input.
CS8414
Optical
Input
2nd Order LPF
(DIR)
10pin Header
AK4394
Lch
ROM Data
or
A/D input
External
Clock
Rch
Clock
Generator
Fig.1 Block diagram
* Circuit diagram and PCB layout are attached at the end of this manual.
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[AKD4394]
(AKD4394 Rev.C is same as AKD4393 Rev.C.)
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[AKD4394]
External Analog Circuit (Rev.C)
The differential output circuit and LPF is implemented on board. The differential outputs of AK4394 is buffered by non-inverted circuit
and output via Cannon connector(differential output). LPF adds differential outputs. NJM5534D is used for op-amp on this board that
has low noise and high voltage torelance characteristics. Analog signal is output via Cannon and BNC connectors on the board. The
output level is about 2.94Vrms([email protected]=5.0V) by Cannon and 2Vrms([email protected]=5.0V) by BNC.
+15
10n
300
AOUTL- +
300
7
3
2 +
4
10n
-15
10u
0.1u
6
NJM5534D
+
10u
0.1u
300
220
3
2
620
2 - 4
3 + 7
560
AOUTL+ +
300
300
10n
3
+
2 -
10u
Lch
0.1u
7
6
0.1u
4
NJM5534D
+
+
10u
10u
0.1u
300
220
100
6
4.7n NJM5534D
430
+
100
620
10n
+10u
4.7n
1
47u
0.1u
430
100
47u
560
+
Fig.2 External Analog Filter
Operation sequence
1. Set up the jumpers for power supply.
[JP15(REG)] selects power supply for AVDD pin of AK4394.
short:
5V is supplied from regulator. (default)
Nothing should be connected to A5V jack.
open:
5V is supplied from A5V.
2. Set up the power supply lines.
+15V=15V, -15V=-15V:
Power supply for op-amp. AVDD of AK4394 is supplied from “+15V” through regulator
(JP15: short).
A5V=5V:
This jack is used when AVDD of AK4394 is supplied from this. In this case, JP15 should be
open.
DVDD=5V:
Power supply for logic circuit on this board.
VP=3V∼5.25V:
Digital (set JP10 to VP),
AGND=DGND=0V .
Each supply line should be distributed from the power unit.
3. Set up the evaluation modes by jumper pins and DIP switches.(See next item.)
4. Power on.(The AK4394 should be reset once by bringing PD "L" upon power-up.)
*SW1 resets the AK4394 during operation.
The AK4394 is reset at SW1="L" and exits resetting at SW1="H".
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[AKD4394]
The evaluation modes and corresponding jumper pins setting
1. Evaluation Modes
•Applicable Evaluation Mode
(1) DIR(Optical Link)
(2) Ideal sine wave generated by ROM data
(3) Using AD converted data
(4)All interface signals including master clock are fed externally.
(1) DIR(Optical Link) (default)
PORT2 is used for the evaluation using such as CD test disk. The DIR generates MCLK, BICK and LRCK SDATAfrom the
received data through optical connector(PORT2: TORX176).
JP1
JP4
JP2
VDD
GND
XTL
JP6
JP5
INV
INV
THR
THR
BCP
BCP
(MSB
justified)
(others)
CS8414
JP7
XTL/EXT
DIR
DIR
XTL/EXT
SD
LR
BI
JP8
JP14
JP9
DIR
2X
1/2X
1X
1X
XTL
CKDIV2
EXT
CKDIV1
CLK
Fig.3 Jumper set-up (DIR)
(2) Ideal sine wave generated by ROM data
Digital signal generated by AKD43XX are used. PORT1 is used for the interface with AKD43XX. Master clock is sent from
AKD4394 to AKD43XX then LRCK, BICK and SDATA are sent from AKD43XX to AKD4394.
JP4
JP2
JP1
JP5
JP6
JP7
JP8
JP14
JP9
DIR
VDD
INV
XTL/EXT
DIR
2X
1/2X
GND
THR
DIR
XTL/EXT
1X
1X
XTL
CKDIV2
EXT
XTL
CS8414
BCP
SD
BI
LR
CKDIV1
CLK
Fig.4 Jumper set-up (ROM data)
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[AKD4394]
(3) Using AD converted data
AD converted data from AKM’s AD evaluation boards(AKD539X, AKD535X) is used through PORT1.
* In case of using external clock through a BNC connector, select EXT of JP9 and short JP1.
* In case of using the double speed sampling mode, select 1/2X of JP8 and set S2-2(DFS) on.
JP4
JP2
JP1
JP6
JP5
JP7
VDD
INV
XTL/EXT
DIR
GND
THR
DIR
XTL/EXT
XTL
CS8414
SD
BCP
BI
LR
JP8
JP14
JP9
DIR
2X
1/2X
1X
1X
XTL
CKDIV2
EXT
CKDIV1
CLK
Fig.5 Jumper set-up (A/D)
(4) All interface signals including master clock are fed externally.
Under the following set-up, MCLK, LRCK and SCLK signals needed for the D/A to operate could be fed through PORT1.
XTL
JP4
JP2
JP1
JP6
JP5
JP7
VDD
INV
XTL/EXT
DIR
GND
THR
DIR
XTL/EXT
CS8414
BCP
SD
BI
LR
JP8
JP14
JP9
DIR
2X
1/2X
1X
1X
XTL
CKDIV2
EXT
CKDIV1
CLK
Fig.6 Jumper set-up (ext.)
2. MCLK set-up
When the LRCK is fed from the 74HC4040 on the board, The ratio of MCLK to LRCK can be selected by JP8 and JP14.
JP14
1X
1X
1/2X
1/2X
JP8
1X
2X
1X
2X
X'tal
12.288MHz
24.576MHz
24.576MHz
49.152MHz
MCLK
12.288MHz
24.576MHz
12.288MHz
12.288MHz
fs
48kHz
48kHz
96kHz
96kHz
MCLK/LRCK
256
512
128
128
Table.1 set-up example
3. BICK set-up
When BICK is supplied from U1(74HC4040), either 32fs or 64fs could be
selected. Fig.8 shows 64fs mode. 64fs mode is recommended.
*Only mode 0(LSB justified 16bit mode) can correspond to 32fs.
JP3
64
32
BCS
Fig.7 Jumper Set-up (BCS)
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[AKD4394]
4. DIP switch set-up
Confirm the set-up of the DIP switch before the operation. “ON” means “H” and “OFF” means “L”.
4-1. Set-up of SW3, SW4(Mode set-up of AK4394: see the data sheet of AK4394)
DIF2
OFF
OFF
OFF
OFF
ON
DIF1
OFF
OFF
ON
ON
OFF
DIF0
OFF
ON
OFF
ON
OFF
Mode
0: LSB justified, 16bit
1: LSB justified, 20bit
2: LSB justified, 24bit
3: I2S
4: MSB justified, 24bit
BICK
≥32fs
≥40fs
≥48fs
≥48fs (default)
≥48fs
Table 2 Audio Serial Interface Format Select Pins (SW3-5,6,7)
4-2. Set-up of SW6 (Mode set-up of CS8414. About details, see the data-sheet of CS8414)
Adjust the audio data format of CS8414 (DIR) to AK4394. CS8414 does not match the LSB justified 20bit/24bit mode of AK4394.
M3
M2
M1
M0
Data format
(SW6-2) (SW6-3) (SW6-4) (SW6-5)
OFF
OFF
OFF
OFF
MSB justified, 24bit
OFF
OFF
ON
OFF
I2S
OFF
ON
OFF
ON
LSB justified, 16bit
Table 3 Set-up of SW6
JP4
INV
THR
THR
(default)
SW6-1(SEL) :Usually ON.
SW6-6(CS12): Select the channel for indicating the channel status.
ON: Rch (default), OFF: Lch
5. Parallel/Serial Control
SW5: set up P/S pin of AK4394.
H: parallel mode. PORT3 is used JP11, 12 and 13 should be open.
L: serial mode. PORT3 is used. JP11, 12 and 13 should be open.
6. Other set-up
SW1: Reset of AK4394. Select "H" during operation.
SW2: Soft-mute of AK4394. The soft-mute is executed during SW2 pushed.
LE1 : This LED shows pre-emphasis status. It turns on when the data is pre-emphasized.
LE2 : This LED shows the output of VERF pin in CS8414. It turns on when the error is occured in CS8414.
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[AKD4394]
Control Software Manual
„ Set-up of evaluation board and control software
1. Set up the AKD4394 according to previous term.
2. Connect IBM-AT compatible PC with AKD4394 by 10-line type flat cable (packed with AKD4394). Take care of the
direction of 10pin header. (Please install the driver in the CD-ROM when this control software is used on Windows
2000/XP. Please refer “Installation Manual of Control Software Driver by AKM device control software”. In case of
Windows95/98/ME, this installation is not needed. This control software does not operate on Windows NT.)
3. Insert the CD-ROM labeled “AKD4394 Evaluation Kit” into the CD-ROM drive.
4. Access the CD-ROM drive and double-click the icon of “akd4394.exe” to set up the control program.
5. Then please evaluate according to the follows.
„ Operation flow
Keep the following flow.
1. Set up the control program according to explanation above.
2. Click “Port Reset” button.
„ Explanation of each buttons
1. [Port Reset]:
2. [Write default]:
3. [All Write]:
4. [Function1]:
5. [Function3]:
6. [Function4]:
7. [Function5]:
buttons and executed.
8. [SAVE]:
9. [OPEN]:
10. [Write]:
Set up the USB interface board (AKDUSBIF-A).
Initialize the register of AK4394.
Write all registers that is currently displayed.
Dialog to write data by keyboard operation.
The sequence of register setting can be set and executed.
The sequence that is created on [Function3] can be assigned to buttons and executed.
The register setting that is created by [SAVE] function on main window can be assigned to
Save the current register setting.
Write the saved values to all register.
Dialog to write data by mouse operation.
„ Indication of data
Input data is indicated on the register map. Red letter indicates “H” or “1” and blue one indicates “L” or “0”. Blank is the part
that is not defined in the datasheet.
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[AKD4394]
„ Explanation of each dialog
1. [Write Dialog]: Dialog to write data by mouse operation
There are dialogs corresponding to each register.
Click the [Write] button corresponding to each register to set up the dialog. If you check the check box, data becomes “H”
or “1”. If not, “L” or “0”.
When writing the input data to AK4394, click [OK] button. If not, click [Cancel] button.
2. [Function1 Dialog]: Dialog to write data by keyboard operation
Address Box:
Data Box:
Input registers address in 2 figures of hexadecimal.
Input registers data in 2 figures of hexadecimal.
When writing the input data to AK4394, click [OK] button. If not, click [Cancel] button.
3. [Save] and [Open]
3-1. [Save]
Save the current register setting data. The extension of file name is “akr”.
(Operation flow)
Click [Save] Button.
Set the file name and push [Save] Button. The extension of file name is “akr”.
3-2. [Open]
The register setting data saved by [Save] is written to AK4394. The file type is the same as [Save].
(Operation flow)
(1) Click [Open] Button.
(2) Select the file (*.akr) and Click [Open] Button.
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[AKD4394]
4. [Function3 Dialog]
The sequence of register setting can be set and executed.
(1) Click [F3] Button.
(2) Set the control sequence.
Set the address, Data and Interval time. Set “-1” to the address of the step where the sequence should be paused.
(3) Click [Start] button. Then this sequence is executed.
The sequence is paused at the step of Interval="-1". Click [START] button, the sequence restarts from
the paused step.
This sequence can be saved and opened by [Save] and [Open] button on the [Function3] window. The extension of file
name is “aks”.
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[AKD4394]
Figure 1. Window of [F3]
5. [Function4 Dialog]
The sequence that is created on [Function3] can be assigned to buttons and executed. When [F4] button is clicked, the
window as shown in Figure 2 opens.
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[AKD4394]
Figure 2. [F4] window
5-1. [OPEN] buttons on left side and [START] buttons
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[AKD4394]
(1) Click [OPEN] button and select the sequence file (*.aks).
The sequence file name is displayed as shown in Figure 3.
Figure 3. [F4] window(2)
(2) Click [START] button, then the sequence is executed.
5-2. [SAVE] and [OPEN] buttons on right side
[SAVE]: The sequence file names can assign be saved. The file name is *.ak4.
[OPEN]: The sequence file names assign that are saved in *.ak4 are loaded.
5-3. Note
(1) [Function4] doesn't support the pause function of sequence function.
(2) All files need to be in same folder used by [SAVE] and [OPEN] function on right side.
(3) When the sequence is changed in [Function3], the file should be loaded again in order to reflect the change.
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[AKD4394]
6. [Function5 Dialog]
The register setting that is created by [SAVE] function on main window can be assigned to buttons and executed.
When [F5] button is clicked, the following window as shown in Figure 4 opens.
Figure 4. [F5] window
6-1. [OPEN] buttons on left side and [WRITE] button
(1) Click [OPEN] button and select the register setting file (*.akr).
(2) Click [WRITE] button, then the register setting is executed.
6-2. [SAVE] and [OPEN] buttons on right side
[SAVE]: The register setting file names assign can be saved. The file name is *.ak5.
[OPEN]: The register setting file names assign that are saved in *.ak5 are loaded.
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[AKD4394]
6-3. Note
(1) All files need to be in same folder used by [SAVE] and [OPEN] function on right side.
(2) When the register setting is changed by [Save] Button in main window, the file should be loaded again in order to
reflect the change.
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[AKD4394]
AK4394 Measurement Example
Conditions:
AVDD =DVDD= 5.0V
Interface = DIR (44.1kHz, 96kHz)
MCLK = 256fs(fs=44.1kHz, 96kHz)
BICK = 64fs
fs = 44.1kHz, 96kHz,
Input data = 24bit
Measurement unit: Audio Precision System Two Cascade (fs=44.1kHz, 96kHz)
(AKD4394 Rev.C: differential output)
fs
Result
44.1kHz
THD+N
100.3 20kLPF
DR
120.1 22kLPF + A-weighted
S/N
120.2 22kLPF + A-weighted
96kHz
THD+N
99.6
40kLPF
DR
119.2 80kLPF + A-weighted
S/N
119.8 80kLPF + A-weighted
Plot:
FFT Point: 16384
Window: Equiripple
Averages: 4
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[AKD4394]
(fs=44.1kHz)
AKM
AK4394 FFT(Input Level=0dBFS,fin=1kHz)
+0
-10
-20
-30
-40
-50
-60
d
B
r
-70
A
-90
-80
-100
-110
-120
-130
-140
-150
-160
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
FFT (Input Level=0dBFS, fin=1kHz)
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[AKD4394]
AKM
AK4394 FFT(Input Level=-60dBFS,fin=1kHz)
+0
-10
-20
-30
-40
-50
-60
d
B
r
-70
A
-90
-80
-100
-110
-120
-130
-140
-150
-160
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
FFT (Input Level=-60dBFS, fin=1kHz)
(fs=44.1kHz)
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[AKD4394]
AKM
AK4394 FFT(Input="0"data)
+0
-10
-20
-30
-40
-50
-60
d
B
r
-70
A
-90
-80
-100
-110
-120
-130
-140
-150
-160
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
FFT (noise floor)
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[AKD4394]
AKM
AK4394 FFT(Input = "0"data, out-of band)
+0
-10
-20
-30
-40
-50
-60
d
B
r
-70
A
-90
-80
-100
-110
-120
-130
-140
-150
-160
90
200
500
1k
2k
5k
10k
20k
50k
100k
Hz
FFT (noise floor, out-of band)
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[AKD4394]
(fs=44.1kHz)
AKM
AK4394 THD + N vs Am plitude(fin=1kHz)
-90
-92
-94
-96
-98
-100
-102
d
B
r
-104
-106
A
-108
-110
-112
-114
-116
-118
-120
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
THD + N vs Amplitude (fin=1kHz)
AKM
AK4394 THD + N vs Input Frequency(Input Level=0dBFS)
-80
-82
-84
-86
-88
-90
-92
d
B
r
-94
-96
A
-98
-100
-102
-104
-106
-108
-110
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
THD +N vs Input Frequency (Input Level=0dBFS)
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[AKD4394]
(fs=44.1kHz)
AKM
AK4394 Linearity
+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
Linearity (fin=1kHz)
AKM
AK4394 Frequency Response
+1
+0.9
+0.8
+0.7
+0.6
+0.5
+0.4
+0.3
+0.2
d
B
r
A
+0.1
+0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
-1
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Frequency Response (Input Level=0dBFS)
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[AKD4394]
(fs=44.1kHz)
AKM
AK4394 Crosstalk
-100
-102
-104
-106
-108
-110
-112
-114
-116
d
B
r
A
-118
-120
-122
-124
-126
-128
-130
-132
-134
-136
-138
-140
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Crosstalk (upper = Rch, Lower = Lch)
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[AKD4394]
(fs=96kHz)
AKM
AK4394 FFT (Input Leve=0dBFS, fin=1kHz, Notch)
+0
-10
-20
-30
-40
-50
-60
d
B
r
A
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
40
50
100
200
500
1k
2k
5k
10k
20k
40k
10k
20k
40k
Hz
FFT (Input Level=0dBFS, fin=1kHz, notch)
AKM
AK4394 FFT (Input Leve=-60dBFS, fin=1kHz)
+0
-10
-20
-30
-40
-50
-60
d
B
r
-70
A
-90
-80
-100
-110
-120
-130
-140
-150
-160
40
50
100
200
500
1k
2k
5k
Hz
FFT (Input Level=-60dBFS, fin=1kHz)
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[AKD4394]
(fs=96kHz)
AKM
AK4394 FFT (Input = "0"data)
+0
-10
-20
-30
-40
-50
-60
d
B
r
A
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
40
50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
FFT (noise floor)
AKM
AK4394 THD + N vs Am plitude(fin=1kHz)
-90
-92
-94
-96
-98
-100
-102
d
B
r
-104
-106
A
-108
-110
-112
-114
-116
-118
-120
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
THD + N vs Amplitude (fin=1kHz)
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[AKD4394]
(fs=96kHz)
AKM
AK4394 THD + N vs Input Frequency(Input Level=0dBFS)
-80
-82
-84
-86
-88
-90
-92
d
B
r
-94
-96
A
-98
-100
-102
-104
-106
-108
-110
40
50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
THD + N vs Input Frequency (Input Level=0dBFS)
AKM
AK4394 Linearity
+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
Linearity (fin=1kHz)
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ASAHI KASEI
[AKD4394]
(fs=96kHz)
AKM
AK4394 Frequency Response
+1
+0.9
+0.8
+0.7
+0.6
+0.5
+0.4
+0.3
+0.2
d
B
r
A
+0.1
+0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
-1
40
50
100
200
500
1k
2k
5k
10k
20k
40k
5k
10k
20k
40k
Hz
Frequency Response (Input Level=0dBFS)
AKM
AK4394 Crosstalk
-50
-55
-60
-65
-70
-75
-80
-85
d
B
r
A
-90
-95
-100
-105
-110
-115
-120
-125
-130
-135
-140
40
50
100
200
500
1k
2k
Hz
Crosstalk (upper = Rch, Lower = Lch)
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ASAHI KASEI
[AKD4394]
Revision History
Date
(YY/MM/DD)
07/01/23
Manual
Revision
KM063002
Board
Revision
C
Reason
Contents
Control Soft Manual Control Soft Manual addition
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.
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