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ASAHI KASEI
[AKD4555-E]
AKD4555-E
Evaluation board Rev.0 for AK4555
GENERAL DESCRIPTION AKD4555-E is an evaluation board for the portable digital audio 16bit A/D and D/A converter, AK4555. The AKD4555-E can evaluate A/D converter and D/A converter separately in addition to loopback mode (A/D D/A). The A/D section can be evaluated by interfacing with AKM's DAC evaluation boards directly. The AKD4555-E has the interface with AKM's ADC evaluation boards. Therefore, it's easy to evaluate the D/A section. The AKD4555-E also has the digital audio interface and can achieve the interface with digital audio systems via opt-connector. Ordering guide
AKD4555 -E --Evaluation board for AK4555
FUNCTION * Compatible with 2 types of interface - Direct interface with AKM's A/D & D/A converter evaluation boards - DIT/DIR with optical input/output
AK4555
Figure 1. AKD4555-E Block Diagram * Circuit diagram and PCB layout are attached at the end of this manual.
-1-
2005/03
ASAHI KASEI
[AKD4555-E]
Evaluation Board Manual Operation sequence
1) Set up the power supply lines. [VDD] (Orange) = 1.6 3.6V [REG] (Red) = 5.0V [AGND] (Black) = 0V [DGND] (Black) = 0V
: for VDD of AK4555 : for regulator : for analog ground (including VSS of AK4555) : 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 AK4555 should be reset once bringing SW2 (PDN) "OFF" upon power-up.
-2-
2005/03
ASAHI KASEI
[AKD4555-E]
Evaluation mode
Applicable Evaluation Mode 1) Evaluation of loopback mode (default) 2) Evaluation of D/A using A/D converted data 3) Evaluation of D/A using DIR (Optical Link) 4) Evaluation of A/D using D/A converted data 5) Evaluation of A/D using DIT (Optical Link) 6) All interface signals including master clock are fed externally.
5) AKD43XX 4) D/A Board PORT2 DIT
AKD4555-E
1) PORT1 DIR
PORT3 10pin-Header CD 3) AKD53XX A/D Board 2) Player
1) Evaluation of loopback mode. (default) Nothing should be connected to PORT1/PORT3.
JP4 MCLK JP5 SCLK JP6 LRCK JP7 SDTI
DIR
ADC
-3-
2005/03
ASAHI KASEI
[AKD4555-E]
2) Evaluation of D/A using A/D converted data. D/A part can be evaluated by connecting with AKM's A/D evaluation boards via PORT3. Nothing should be connected to PORT1
JP4 MCLK JP5 SCLK JP6 LRCK JP7 SDTI
DIR
ADC
3) Evaluation of D/A using DIR. (Optical link) PORT1 (TORX141) is used. DIR generates MCLK, SCLK, LRCK and SDATA from the received data through optical connector (TORX141). Used for the evaluation using CD test disk. Nothing should be connected to PORT2/PORT3.
JP4 MCLK JP5 SCLK JP6 LRCK JP7 SDTI
DIR
ADC
4) Evaluation of A/D using D/A converted data. A/D part can be evaluated by connecting with AKM's D/A evaluation boards via PORT3. Nothing should be connected to PORT1.
JP4 MCLK JP5 SCLK JP6 LRCK JP7 SDTI
DIR
ADC
-4-
2005/03
ASAHI KASEI
[AKD4555-E]
5) Evaluation of A/D using DIT. (Optical link) PORT2 (TOTX141) 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.
JP4 MCLK JP5 SCLK JP6 LRCK JP7 SDTI
DIR
ADC
6) All interfacing signals (MCLK, SCLK, LRCK) are fed from the external circuit through PORT3. Under the following set-up, all external signals needed for the AK4555 to operate could be fed through PORT3.
JP4 MCLK JP5 SCLK JP6 LRCK JP7 SDTI
DIR
ADC
-5-
2005/03
ASAHI KASEI
[AKD4555-E]
DIP switch set up
Upper-side is "ON" ("H") and lower side is "OFF" ("L"). [SW1]: Set up the AK4555 and AK4114. . SW No. SW Name 1 2 3 4 DIF2, 0 DEM1 DEM0 NC
Always ON.
Mode
AK45545and AK4114 Audio Format Setting
Set up the de-emphasis of AK4555 (See table 2) No use
Table 1. DIPswitch set-up of AK4114
DEM1 DEM0 Mode (SW1-#2) (SW1-#3) OFF OFF 44.1kHz OFF ON OFF ON OFF 48kHz ON ON 32kHz Table 2. DIPswitch set up of de-emphasis
-6-
2005/03
ASAHI KASEI
[AKD4555-E]
Other jumper pins set up
[JP1] (GND): Connection between AGND and DGND open: Both grounds are separated on board. short: Both grounds are connected on board. [JP2] (REG): Select to regulator open: On-board regulator is not used. short: On-board regulator is used.(The connector "VDD" can be open.) [JP3] (PWR): Pull up power supply select for SDTO. VDD: Connected to VDD of AK4555. D3V: Supplied from regulator (3V).
The function of the toggle SW. Upper-side is "ON" and lower side is "OFF".
[SW2] (PDN): Resets the AK4555 and AK4114. Keep "ON" during normal operation.
Indication for LED
[LED1] (ERF): Monitor INT0 pin of the AK4114. LED turns on when some error has occurred to AK4114.
-7-
2005/03
ASAHI KASEI
[AKD4555-E]
Input Circuit
J1 C28 4.7u AINR +
6 4 3
R20 560
AINL/AINR
C29 4.7u AINL + R21 560
Figure 2. Input circuit on board
Output Circuit
R24 220 R23 10k R25 220 R22 10k J2
+
AOUTR C30 22u
6 4 3
AOUTL/AOUTR
AOUTL C31 22u
+
Figure 3. Output circuit on board
* AKM assumes no responsibility for the trouble when using the circuit examples.
-8-
2005/03
ASAHI KASEI
[AKD4555-E]
MEASUREMENT RESULTS
[Measurement condition] * Measurement unit * MCLK * SCLK * fs * Bit * Power Supply * Interface * Temperature 1. ADC VDD 2.5V Parameter S/(N+D) (-0.5dBFS) D-Range (-60dBFS) S/N (0 data) Measured Filter 20kHz LPF 20kLPF + A-weighted 20kLPF + A-weighted AINL 80.9 dB 89.4 dB 89.3 dB AINR 81.0 dB 89.2 dB 89.2 dB
: Audio Precision, System two : 256fs : 64fs : 44.1kHz : 16bit : VDD = VP = 2.5V, VD = 5V : DIT/DIR : Room
2. DAC VDD 2.5V Parameter S/(N+D) (0dBFS) D-Range (-60dBFS) S/N (0 data) Measured Filter 20kHz LPF 22kLPF + A-weighted 22kLPF + A-weighted AOUTL 84.5 dB 91.6 dB 91.9 dB AOUTR 84.5 dB 91.7 dB 92.1 dB
-9-
2005/03
ASAHI KASEI
[AKD4555-E]
3.PLOT DATA 3-1 ADC
AKM
-60 -62 -64 -66 -68 -70 -72 d B F S -74 -76 -78 -80 -82 -84 -86 -88 -90 -120
AK4554 ADC THD+N vs.Input Level VDD=2.5V, fs=44.1kHz, fin=1kHz
-110
-100
-90
-80
-70
-60 dBr
-50
-40
-30
-20
-10
Fig. 1 THD+N vs. Input Level
AKM
-60 -62 -64 -66 -68 -70 -72 d B F S -74 -76 -78 -80 -82 -84 -86 -88 -90 20
AK4554 ADC THD+N vs. Input Frequency VDD=2.5V, fs=44.1kHz, Input Level=-0.5dB
50
100
200
500 Hz
1k
2k
5k
10k
20k
Fig.2 THD+N vs. Input Frequency
- 10 -
2005/03
ASAHI KASEI
[AKD4555-E]
AKM
+0 -10
AK4554 ADC Linearity VDD=2.5V, fs=44.1kHz, fin=1kHz
-20
-30
-40
d B F S
-50
-60
-70
-80
-90
-100
-110 -110
-100
-90
-80
-70
-60 dBr
-50
-40
-30
-20
-10
+0
Fig.3 Linearity
AKM
+0 -0.2 -0.4 -0.6 -0.8 -1 -1.2 d B F S -1.4 -1.6 -1.8 -2 -2.2 -2.4 -2.6 -2.8 -3 20
AK4554 ADC Frequency Response VDD=2.5V, fs=44.1kHz, Input level=-0.5dB
50
100
200
500 Hz
1k
2k
5k
10k
20k
Fig.4 Frequency Response
- 11 -
2005/03
ASAHI KASEI
[AKD4555-E]
AKM
+0 -10 -20 -30 -40 -50 -60 d B F S -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 20
AK4554 ADC FFT Plot VDD=2.5V, fs=44.1kHz, fin=1kHz, Input Level=-0.5dB
50
100
200
500 Hz
1k
2k
5k
10k
20k
Fig.5 FFT Plot (Input Level = -0.5dB)
AKM
+0 -10 -20 -30 -40 -50 -60 d B F S -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 20
AK4554 ADC FFT Plot VDD=2.5V, fs=44.1kHz, fin=1kHz, Input Level=-60dB
50
100
200
500 Hz
1k
2k
5k
10k
20k
Fig.6 FFT Plot (Input Level = -60dB)
- 12 -
2005/03
ASAHI KASEI
[AKD4555-E]
AKM
+0 -10 -20 -30 -40 -50 -60 d B F S -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 20
AK4554 ADC FFT VDD=2.5V, fs=44.1kHz, Input Level=-0.5dB
50
100
200
500 Hz
1k
2k
5k
10k
20k
Fig.7 FFT Plot (no signal)
Fig.8 Crosstalk (red : L--->R, blue : R--->L)
- 13 -
2005/03
ASAHI KASEI
[AKD4555-E]
3-2. DAC
AKM
-60 -62 -64 -66 -68 -70 -72 -74 -76 d B r A -78 -80 -82 -84 -86 -88 -90 -92 -94 -96 -98 -100 -120 -110 -100 -90 -80 -70 -60 dBFS -50 -40 -30 -20 -10 +0
AK4554 DAC THD+N vs. Input Level VDD=2.5V, fs=44.1kHz, fin=1kHz
Fig.9 THD+N vs. Input Level
AKM
-60 -62 -64 -66 -68 -70 -72 -74 -76 d B r A -78 -80 -82 -84 -86 -88 -90 -92 -94 -96 -98 -100 20 50 100 200 500 Hz 1k 2k 5k 10k 20k
AK4554 DAC THD+N vs. Input Frequency VDD=2.5V, fs=44.1kHz, Input Level=0dB
Fig.10 THD+N vs. Input Frequency
- 14 -
2005/03
ASAHI KASEI
[AKD4555-E]
AKM
+0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -120
AK4554 DAC Linearity VDD=2.5V, fs=44.1kHz, fin=1kHz
d B r A
-110
-100
-90
-80
-70
-60 dBFS
-50
-40
-30
-20
-10
+0
Fig.11 Linearity
AKM
+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 2k 4k 6k 8k 10k Hz 12k 14k 16k 18k 20k
AK4554 DAC Frequency Response VDD=2.5V, fs=44.1kHz, Input Level=0dB
Fig.12 Frequency Response
- 15 -
2005/03
ASAHI KASEI
[AKD4555-E]
AKM
+0 -10 -20 -30 -40 -50 -60 d B r A -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 20
AK4554 DAC FFT Plot VDD=2.5V, fs=44.1kHz,fin=1kHz, Input Level=0dB
50
100
200
500 Hz
1k
2k
5k
10k
20k
Fig.13 FFT Plot (Input Level = 0dB)
AKM
+0 -10 -20 -30 -40 -50 -60 d B r A -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 20
AK4554 DAC FFT Plot VDD=2.5V, fs=44.1kHz,fin=1kHz, Input Level=-60dB
50
100
200
500 Hz
1k
2k
5k
10k
20k
Fig.14 FFT Plot (Input Level = -60dB)
- 16 -
2005/03
ASAHI KASEI
[AKD4555-E]
AKM
+0 -10 -20 -30 -40 -50 -60 d B r A -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 20
AK4554 DAC FFT VDD=2.5V, fs=44.1kHz, Input Level=0dB
50
100
200
500 Hz
1k
2k
5k
10k
20k
Fig.15 FFT Plot (no data)
Fig.16 Crosstalk (red : L--->R, blue : R--->L)
- 17 -
2005/03
ASAHI KASEI
[AKD4555-E]
AKM
+0 -10 -20 -30 -40 -50 -60 d B r A -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 20
AK4554 DAC out-band-noise VDD=2.5V, fs=44.1kHz, Input=no data
50
100
200
500
1k Hz
2k
5k
10k
20k
50k
100k
Fig.17 Out band noise
- 18 -
2005/03
ASAHI KASEI
[AKD4555-E]
Revision History
Date (YY/MM/DD) 05/03/31 Manual Revision KM078200 Board Revision 0 Reason First Edtion Contents
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.
- 19 -
2005/03
A
B
C
D
E
J1
6 4 3
C1 4.7u + +
REG T45_R
1
VDD T45_O
1
AGND
DGND +
T45_BK T45_BK
1 1
R2 220
6
J2
4 3
R3 560
C2 22u
R1 10k R4 220 R5 10k
AINL/AINR
E
AOUTL/AOUTR
E
C4 4.7u + +
(5V)
(1.6-3.6V)
REG T1 TA4803F
GND IN OUT 1
R6 560
DGND
JP1 GND
AGND
VD C6 0.1u C7 + 47u C8 0.1u
C5 0.1u
2
U1
D D
1
VCOM
AOUTR
16
VA JP2 REG L1
1 1 2 3 AINL PWDAN 14 2 AINR AOUTL 15
+ C3 22u
REG
VA
PWDAN
C10 47u
+
2
(short)
R7 5.1 + + LVC VDD C11 10u C9 0.1u
4
VSS
PWADN
13
R8
5 VDD SCLK 12
51 BCLK
R9
6
C
51 MCLK
C
DEM0
MCLK
11
R10 51
7 DEM1 LRCK 10
LRCK R12 51
R11 51
8 SDTO SDTI 9
SDTI
AK4555
DEM0 DEM1 4554_SDTO
B
B
A
A
Title Size Document Number
AKD4555-E
AK4555
Sheet
E
Rev
A3
Date:
A B C D
0 1
of
Wednesday, March 02, 2005
4
A
B
C
D
E
VD
1
L2 47u
E
VD
E
DIP SW DIF2, 0 AK4555 AK4550/4 ON OFF DEM1 OFF OFF ON ON DEM0 OFF ON OFF ON 44.1k OFF 48k 32k
PORT1
VCC GND OUT 3 2 1
2
C14 10u C12 0.1u + C13 10u R13 470 + C15 0.1u
TORX141
C16 0.47u VD
41 48 46 45 44 42 39 47
R14 18k
AVSS
VCOM
TEST1
D
AVDD
INT1
RX3
RX2
RX1
RX0
4 3 2 1
NC
NC
1 2 3
6 5 4
43
40
38
37
RP1
DIF2,0 DEM 1 DEM 0
SW1 U2 VD U3A
INT0 36 1 14 2 7 R
VD
D
47k
MODE2 DEM0 DEM1
2 NC 1 IPS0
R15 1k
2
LED1 ERF
1
74HC14
OCKS0 35
3
DIF0
OCKS1
34
4
TEST2
CM1
33
5
DIF1
CM0
32
4114_PDN TP1 EXTCLK
1
C
C
6
NC
1
7
DIF2
AK4114
PDN
31
C17 5p
XTI 30
X1 11.2896MHz
IPS1 XTO 2 8 29
C18 5p
9
P/SN
DAUX
28
SDTO
VD
10
XTL0
MCKO2
27
11
B
XTL1
BICK
26
DIR_BICK
B
12
VIN MCKO1 COUT UOUT DVDD BOUT VOUT TVDD DVSS DVSS LRCK TX0 TX1
SDTO
25
DIR_SDTO
13
14
15
16
17
18
19
20
21
22
23
C19 0.1u VD +
C20 0.1u +
24
DIR_LRCK
VD C21 10u R16 5.1 VD C22 10u
DIR_MCKO
PORT2
IN VCC
A
3 2 1
GND
A
TOTX141
C23 0.1u
Title Size Document Number
AKD4555-E
DIR/DIT
Sheet
E
Rev
A3
Date:
A B C D
0 2
of
Monday, February 07, 2005
4
A
B
C
D
E
E
E
JP3 PWR
VDD D3V
VDD VD
R17 1k U4 SDTO PWDAN
11 Y8 A8 9 7 2 14
U5A
1
4554_SDTO
74LVC07ANS LVC
D
12
Y7
A7
8
D
JP4MCLK MCLK
13 Y6 A6 7
DIR_MCKO JP5SCLK
BCLK
14
Y5
A5
6
DIR_BICK JP6LRCK
LRCK
15
Y4
A4
5
DIR_LRCK
SDTI
16
Y3
A3
4
17
Y2
A2
3
C
C
18
Y1
A1
2
10
GND
G2
19
C24 0.1u
20 VCC G1 1
VD LVC 74LVC541
MCLK BICK LRCK SDTI VD
PORT3
1 2 3 4 5 10 9 8 7 6
GND GND NC NC SDTO
DSP R19 VD
2
D1 1S1588
R18 10k U3B
3
1
VD
14 4 7
U3C
5
10k 4114_PDN ADC
B
B
14 6 7
L
3 1
H SW2 PDN
2
74HC14
74HC14 SDTO
C25 0.1u VD
for 74HC14
for 74LVC07ANS LVC C26 0.1u C27 0.1u
JP7 SDTI DIR DIR_SDTO
A
A
Title Size Document Number
AKD4555-E
LOGIC
Sheet
E
Rev
A3
Date:
A B C D
0 3
of
Monday, February 07, 2005
4
A
B
C
D
E
E
E
D
D
C
VD LVC
C
U5B 7
3 4 14
74LVC07ANS
U5C 7
5 6 14
74LVC07ANS
U3D
9
14 8 7
U5D 7
9 8 14
74HC14
74LVC07ANS
U5E 7
B
U3E
11
14 10 7
11
10 14
74LVC07ANS
B
74HC14
13
U5F 7
12 14
74LVC07ANS
U3F
13
14 12 7
74HC14
A
A
Title Size Document Number
AKD4555-E
PIN
Sheet
E
Rev
A3
Date:
A B C D
0 4
of
Monday, February 07, 2005
4

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