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ASAHI KASEI
[AKD4395]
AKD4395
Evaluation board Rev.C for AK4395
General Description The AKD4395 is an evaluation board for AK4395, which is 192kHz sampling 24Bit DAC. The AKD4395 includes a LPF which can add differential analog outputs from the AK4395 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 AK4395.
< Ordering Guide
AKD4395 Rev.C
--- Evaluation board Rev.C for AK4395: 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.
Optical Input 10pin Header
CS8414 (DIR)
2nd Order LPF
AK4395
ROM Data or A/D input
Lch
External Clock Clock Generator Fig.1 Block diagram * Circuit diagram and PCB layout are attached at the end of this manual. (AKD4395 Rev.C is same as AKD4393 Rev.C.)
Rch

1
2000/7
ASAHI KASEI
[AKD4395]
The differential output circuit and LPF is implemented on board. The differential outputs of AK4395 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 2.73Vrms (typ@VREF=5.0V) by Cannon and 2Vrms (typ@VREF=5.0V) by BNC.
+15 + -15
6.8n 100u
AOUTL- +
10u
300 300 6.8n
560
7 3 2+ 4
0.1u
6 +
NJM5534D
10u 100
470 .2.2n
2 1
0.1u
10u +
200 330
0.1u
3
620 470 620
6.8n
+
2.2n NJM5534D
-4 3+7
2
100
6
Lch
100u
AOUTL+ +
300 300 6.8
10u
560
7 3 + 24
0.1u
6
100
0.1u
+
+
10u
NJM5534D
10u
200 330
0.1u
Fig.2 External Analog Filter
1. Set up the jumpers for power supply. [JP15(REG)] selects power supply for AVDD pin of AK4395. 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 AK4395 is supplied from "+15V" through regulator (JP15: short). A5V=5V: This jack is used when AVDD of AK4395 is supplied from this. In this case, JP15 should be open. DVDD=5V: Power supply for logic circuit on this board. VP=3V5.25V: 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 AK4395 should be reset once by bringing PD "L" upon power-up.) *SW1 resets the AK4395 during operation. The AK4395 is reset at SW1="L" and exits resetting at SW1="H".

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ASAHI KASEI
[AKD4395]
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 SDATA from the received data through optical connector(PORT2: TORX176). JP4 JP5
VDD INV THR INV THR XTL/EXT DIR DIR XTL/EXT 2X 1X 1/2X 1X GND
JP1
JP2
JP6
JP7
JP8
JP14
DIR XTL EXT
JP9
XTL
CS8414
BCP
(MSB justified)
BCP
(others)
SD BI LR
CKDIV1
CKDIV2
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 AKD4395 to AKD43XX then LRCK, BICK and SDATA are sent from AKD43XX to AKD4395.
JP1 JP2
VDD GND
JP4
INV THR
JP5
XTL/ XT E D IR
JP6
D IR XTL/ XT E
JP7
JP8
2X 1X
J P 14
1/ 2X 1X D IR XTL EXT
JP9
XTL
C S 8414
BCP
BI
LR
SD
C K D IV 1
C K D IV 2
CLK
Fig.4 Jumper set-up (ROM data)

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ASAHI KASEI
[AKD4395]
(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.
JP1 JP2
VDD GND
JP4
INV THR
JP5
XTL/ XT E D IR
JP6
D IR XTL/ XT E
JP7
JP8
2X 1X
J P 14
1/ 2X 1X D IR XTL EXT
JP9
XTL
C S 8414
BCP
BI
LR
SD
C K D IV 1
C K D IV 2
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.
JP1 JP2
VDD GND
JP4
INV THR
JP5
XTL/ XT E D IR
JP6
D IR XTL/ XT E
JP7
JP8
2X 1X
J P 14
1/ 2X 1X D IR XTL EXT
JP9
XTL
C S 8414
BCP
BI
LR
SD
C K D IV 1
C K D IV 2
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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ASAHI KASEI
[AKD4395]
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.System Clock There are two methods to set MCLK frequency. In Manual Setting Mode (ACKS = "0": Register 00H), the sampling speed is set by DFS0/1(Table 1,4). CKS0/1/2 set the frequency of MCLK at each sampling speed (Table 2,5). In Auto Setting Mode (ACKS = "1": Default), as MCLK frequency is detected automatically (Table 9), and the internal master clock becomes the appropriate frequency, it is not necessary to set DFS0/1 and CKS0/1/2. In parallel mode, CKS2 and DFS1 are fixed to "0". All external clocks (MCLK, BICK and LRCK) should always be present whenever the AK4395 is in normal operation mode (PD = "H"). If these clocks are not provided, the AK4395 may draw excess current because the device utilizes dynamic refreshed logic internally. If the external clocks are not present, the AK4395 should be in the power-down mode (PDN = "L") or in the reset mode (RSTN = "0"). After exiting reset at power-up etc., the AK4395 is in power-down mode until MCLK and LRCK are input. Parallel Mode : DFS0 (SW3-1) OFF ON
Sampling Rate (fs) Normal Speed Mode Double Speed Mode 30kHz~54kHz 60kHz~108kHz Default
Table 1.Sampling Speed (Manual Setting Mode) Note: DFS1(Register 00H) can be set at only serial mode. ACKS (SW4-3) OFF OFF OFF OFF ON CKS1 (SW4-2) OFF OFF ON ON * CKS0 (SW4-1) OFF ON OFF ON *
Mode 0 1 2 3 *
Normal 256fs 256fs 384fs 384fs 512fs /768fs
Double 128fs 256fs 192fs 384fs 256fs /384fs
Quad N/A N/A N/A N/A 128fs /192fs Default
Table 2. Master Clock (Manual Setting Mode) Note: When ACKS is ON, Auto Setting Mode is enabled.

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ASAHI KASEI
[AKD4395]
Serial Mode : CAD0 (SW3-1) OFF DZFR (SW4-3) OFF CAD1 (SW4-2) OFF DZFL (SW4-1) OFF
Default
Table 3. Set up of SW3-1 and SW4 Note: SW4-1 and SW4-3 must be always OFF. SW3-1 and SW4-2 are chip addresses of uP I/F. DFS1 OFF OFF ON DFS0 OFF ON OFF Sampling Rate (fs) Normal Speed Mode Double Speed Mode Quad Speed Mode 30kHz~54kHz 60kHz~108kHz 120kHz~216kHz Default
Table 4. Sampling Speed (Manual Setting Mode)
Mode 0 1 2 3 4 5 6 7
CKS2 OFF OFF OFF OFF ON ON ON ON
CKS1 OFF OFF ON ON OFF OFF ON ON
CKS0 OFF ON OFF ON OFF ON OFF ON
Normal 256fs 256fs 384fs 384fs 512fs 512fs 768fs 768fs
Double 128fs 256fs 192fs 384fs 256fs N/A 384fs N/A
Quad N/A N/A N/A N/A 128fs N/A 192fs N/A Default
Table 5. Master Clock (Manual Setting Mode) Note: The master clock at quad speed support only 128fs or 192fs.

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ASAHI KASEI
[AKD4395]
RCK fs 32.0kHz 44.1kHz 48.0kHz
256fs 8.1920MHz 11.2896MHz 12.2880MHz
MCLK 384fs 512fs 12.288MHz 16.3840MHz 16.9344MHz 22.5792MHz 18.4320MHz 24.5760MHz
768fs 24.576MHz 33.8688MHz 36.8640MHz
BICK 64fs 2.0480MHz 2.8224MHz 3.0720MHz
Table 6. System Clock example (Normal Speed Mode @Manual Setting Mode)
LRCK fs 88.2kHz 96.0kHz
128fs 11.2896MHz 12.2880MHz
MCLK 192fs 256fs 16.9344MHz 22.5792MHz 18.4320MHz 24.5760MHz
384fs 33.8688MHz 36.8640MHz
BICK 64fs 5.6448MHz 6.1440MHz
Table 7. System Clock example (Double Speed Mode @Manual Setting Mode)
LRCK fs 176.4kHz 192.0kHz
MCLK 128fs 192fs 22.5792MHz 33.8688MHz 24.5760MHz 36.8640MHz
BICK 64fs 11.2896MHz 12.2880MHz
Table 8. System Clock example (Quad Speed Mode @Manual Setting Mode)
MCLK 512fs 768fs 256fs 384fs 128fs 192fs
Sampling Speed Normal Double Quad
Table 9. Sampling Speed (Auto Setting Mode)
LRCK fs 32.0kHz 44.1kHz 48.0kHz 88.2kHz 96.0kHz 176.4kHz 192.0kHz
128fs 22.5792 24.5760
192fs 33.8688 36.8640
MCLK (MHz) 256fs 384fs 22.5792 33.8688 24.5760 36.8640 -
512fs 16.3840 22.5792 24.5760 -
768fs 24.5760 33.8688 36.8640 -
Sampling Speed Normal Double Quad
Table 10. System Clock example (Auto Setting Mode)

7
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ASAHI KASEI
[AKD4395]
4-2. Set-up of SW3,(Mode set-up of AK4395: see the datasheet of AK4395) Mode 0 1 2 3 4 DIF2 (SW3-2) OFF OFF OFF OFF ON DIF1 (SW3-3) OFF OFF ON ON OFF DIF0 (SW3-4) OFF ON OFF ON OFF Mode 0: 16bit LSB Justified 1: 20bit LSB Justified 2: 24bit MSB Justified 3: I2S Compatible 4: 24bit LSB Justified BICK 32fs 40fs 48fs 48fs 48fs
(default)
Table 11. Audio Serial Interface Format Select pins (SW3-2,3,4) 4-3.Set-up of SW6(Mode set-up of CS8414. About details, see the datasheet of CS8414) Adjust the audio format of CS8414(DIR) to AK4395. CS8414 does not match the LSB justified 20bit/24bit mode of AK4395. M3 (SW6-2) OFF OFF OFF M2 (SW6-3) OFF OFF ON M1 (SW6-4) OFF ON OFF M0 (SW6-5) OFF OFF ON Format 24bit MSB Justified I2S Compatible 16bit LSB Justified JP4 INV THR THR
(default)
Table 12. Set-up SW6 SW6-1(SEL) :Usually ON. SW6-6(CS12): Select the channel for indicating the channel status. ON: Rch, OFF: Lch(default) 5. Parallel/Serial Control SW5: set up P/S pin of AK4395. "H": Parallel mode. Nothing should be connected to PORT3. JP11, 12 and 13 should be short. "L": Serial mode. PORT3 is used. JP11, 12 and 13 should be open. SW4-1 and SW4-3 must be OFF. 6. Other set-up SW1: Reset of AK4395. Select "H" during operation. SW2: Soft-mute of AK4395. 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.

8
2000/7
ASAHI KASEI
[AKD4395]
< AK4395 Measurement Example
Conditions: AVDD =DVDD= 5.0V (AVDD is supplied by regulator) Interface = DIR (44.1kHz, 96kHz) MCLK = 256fs(fs=44.1kHz, 96kHz) BICK = 64fs fs = 44.1kHz, 96kHz, Input data = 24bit Room Temperature Measurement unit: Audio Precision System Two Cascade (fs=44.1kHz, 96kHz) fs=44.1kHz Parameter S/(N+D) DR S/N
Input signal 1kHz, 0dB 1kHz, -60dB no signal
Measurement filter 20kLPF 20kLPF 22kLPF, A-weighted 20kLPF 22kLPF, A-weighted
Lch 102.0dB 116.9dB 119.2dB 117.8dB 120.1dB
Rch 102.1dB 116.8dB 119.2dB 117.8dB 120.1dB
fs=96kHz Parameter S/(N+D) DR S/N
Input signal 1kHz, 0dB 1kHz, -60dB no signal
Measurement filter 40kLPF 40kLPF 80kLPF, A-weighted 40kLPF 80kLPF, A-weighted
Lch 100.0dB 114.4dB 119.9dB 114.6dB 119.7dB
Rch 100.0dB 114.4dB 119.5dB 114.4dB 119.5dB

9
2000/7
ASAHI KASEI
[AKD4395]
(fs=44.1kHz)
AKM
+0 -10 -20 -30 -40 -50 -60 d B r A -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 20
AK4395 FFT (Input Level=0dBFS, fin=1kHz)
50
100
200
500 Hz
1k
2k
5k
10k
20k
FFT (1kHz, 0dBFS input)
AKM
+0 -10 -20 -30 -40 -50 -60 d B r A -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 20
AK4395 FFT (Input Level=-60dBFS, fin=1kHz)
50
100
200
500 Hz
1k
2k
5k
10k
20k
FFT (1kHz, -60dBFS input)

10
2000/7
ASAHI KASEI
[AKD4395]
(fs=44.1kHz)
AKM
+0 -10 -20 -30 -40 -50 -60 d B r A -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 20
AK4395 FFT (noise floor)
50
100
200
500 Hz
1k
2k
5k
10k
20k
FFT (noise floor)
AKM
+0 -10 -20 -30 -40 -50 -60 d B r A -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 90 200 500 1k 2k Hz 5k 10k 20k 50k 100k
AK4395 FFT (out-of-band noise)
FFT (out-of-band noise)

11
2000/7
ASAHI KASEI
[AKD4395]
(fs=44.1kHz)
AKM
-60 -65 -70 -75 -80 -85 d B r A -90 -95 -100 -105 -110 -115 -120 -125 -130 -150
AK4395 THD + N vs Amplitude(fin=1kHz)
-140
-130
-120
-110
-100
-90
-80 dBFS
-70
-60
-50
-40
-30
-20
-10
+0
THD+N vs Input Level (fin=1kHz)
AKM
-90 -91 -92 -93 -94 -95 -96 -97 -98 d B r A -99 -100 -101 -102 -103 -104 -105 -106 -107 -108 -109 -110 20 50 100 200 500 Hz 1k 2k 5k 10k 20k
AK4395 THD + N vs Input Frequency (Input Level=0dBFS)
THD+N vs fin (Input level=0dBFS)

12
2000/7
ASAHI KASEI
[AKD4395]
(fs=44.1kHz)
AKM
+0 -10 -20 -30 -40 -50 -60 d B r A -90 -100 -110 -120 -130 -140 -150 -150 -70 -80
AK4395 Linearity (fin=1kHz)
-140
-130
-120
-110
-100
-90
-80 dBFS
-70
-60
-50
-40
-30
-20
-10
+0
Linearity (fin=1kHz)
AKM
+0.5 +0.45 +0.4 +0.35 +0.3 +0.25 +0.2 +0.15 +0.1 d B r B +0.05 +0 -0.05 -0.1 -0.15 -0.2 -0.25 -0.3 -0.35 -0.4 -0.45 -0.5 20 50 100 200 500 Hz 1k 2k 5k 10k 20k
AK4395 Frequency Response
Frequency Response (Input level=0dBFS)

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2000/7
ASAHI KASEI
[AKD4395]
(fs=44.1kHz)
AKM
-100 -102.5 -105 -107.5 -110 -112.5 -115 -117.5 -120 d B r A -122.5 -125 -127.5 -130 -132.5 -135 -137.5 -140 -142.5 -145 -147.5 -150 20 50 100 200 500 Hz 1k 2k 5k 10k 20k
AK4395 Frequency Response
Cross-talk (Input level=0dBFS)

14
2000/7
ASAHI KASEI
[AKD4395]
(fs=96kHz)
AKM
+0 -10 -20 -30 -40 -50 -60 d B r A -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 40
AK4395 FFT (Input Level=0dBFS, fin=1kHz, Notch On)
50
100
200
500
1k Hz
2k
5k
10k
20k
40k
FFT (1kHz, 0dBFS input, Notch=NO)
AKM
+0 -10 -20 -30 -40 -50 -60 d B r A -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 40
AK4395 FFT (Input Level=-60dBFS, fin=1kHz)
50
100
200
500
1k Hz
2k
5k
10k
20k
40k
FFT (1kHz, -60dBFS input)

15
2000/7
ASAHI KASEI
[AKD4395]
AKM
+0 -10 -20 -30 -40 -50 -60 d B r A -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 40
AK4395 FFT (Input Level=-60dBFS, fin=1kHz)
50
100
200
500
1k Hz
2k
5k
10k
20k
40k
FFT (noise floor)

16
2000/7
ASAHI KASEI
[AKD4395]
(fs=96kHz)
AKM
-90 -92 -94 -96 -98 -100 -102 d B r A -108 -110 -112 -114 -116 -118 -120 -150 -104 -106
AK4395 THD + N vs Amplitude (fin=1kHz)
-140
-130
-120
-110
-100
-90
-80 dBFS
-70
-60
-50
-40
-30
-20
-10
+0
THD+N vs Input Level (fin=1kHz)
AKM
-80 -82 -84 -86 -88 -90 -92 d B r A -98 -100 -102 -104 -106 -108 -110 40 -94 -96
AK4395 THD + N vs e (Input Le vel=0dBFS)
50
100
200
500
1k Hz
2k
5k
10k
20k
40k
THD+N vs fin (Input level=0dBFS)

17
2000/7
ASAHI KASEI
[AKD4395]
(fs=96kHz)
AKM
+0 -10 -20 -30 -40 -50 -60 d B r A -90 -100 -110 -120 -130 -140 -150 -150 -70 -80
AK4395 Linearity(fin=1kHz)
-140
-130
-120
-110
-100
-90
-80 dBFS
-70
-60
-50
-40
-30
-20
-10
+0
Linearity (fin=1kHz)
AKM
+0.5 +0.45 +0.4 +0.35 +0.3 +0.25 +0.2 +0.15 +0.1 d B r B +0.05 +0 -0.05 -0.1 -0.15 -0.2 -0.25 -0.3 -0.35 -0.4 -0.45 -0.5 40 50 100 200 500 1k Hz 2k 5k 10k 20k 40k
AK4395 Frequency Response
Frequency Response (Input level=0dBFS) (Including external LPF)

18
2000/7
ASAHI KASEI
[AKD4395]
(fs=96kHz)
AKM
-100 -102.5 -105 -107.5 -110 -112.5 -115 -117.5 -120 d B r A -122.5 -125 -127.5 -130 -132.5 -135 -137.5 -140 -142.5 -145 -147.5 -150 40 50 100 200 500 1k Hz 2k 5k 10k 20k 40k
AK4395 Crosstalk
Cross-talk (Input level=0dBFS)

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2000/7
ASAHI KASEI
[AKD4395]
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.

20
2000/7

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