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ASAHI KASEI
[AKD4385-SC]
AKD4385-SC
AK4385 Evaluation board Rev.1
General Description The AKD4385-SC is an evaluation board for AK4385, which is 192kHz sampling 24Bit DAC. The AKD4385-SC includes a LPF which can add differential analog outputs from the AK4385 and also has a digital interface. Therefore, it is easy to evaluate the AK4385. Ordering Guide AKD4385-SC --- Evaluation board for AK4385 Function On-board Analog output buffer circuit On-board digital audio interface. (AK4113)
+15V
AGND -15V
+3.3V Reg Reg
+5V
DIR COAX In AK4113 Opt In
PORT1 EXT PORT2 Control Data
Lch 2nd Order AK4385 LPF Rch
Figure 1. Block diagram
* Circuit diagram and PCB layout are attached at the end of this manual. COAX is recommended for an evaluation of the Sound quality.

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Operation sequence
1) Set up the power supply lines. (See "Other jumpers set-up".) Name +15V -15V AGND Color Red Blue Black Voltage +12+15V -12-15V 0V Comments For regulator and op-amps. For op-amps. GND Attention This jack should be always connected to power supply. This jack should be always connected to power supply. This jack should be always connected to power supply.
Table 1. Set up of power supply lines
Each supply line should be distributed from the power supply unit. 2) Set-up the jumper pins 3) Set-up the DIP switches. (See the followings.) 4) Power on The AK4385 should be reset once by bringing SW1 (PDN) "L" upon power-up.

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Evaluation mode
1. DIR (COAX) (default) It is possible to evaluate the AK4385 by using CD disk. The DIR generates MCLK, BICK, LRCK and SDATA from the received data through BNC connector (J1). Setting of jumper is shown below. COAX is recommended for an evaluation of the Sound quality.
JP4
OPT COAX RX (Default)
Figure 2. Jumper setting, when using DIR 2. DIR (Optical Link) It is possible to evaluate the AK4385 by using CD disk. The DIR generates MCLK, BICK, LRCK and SDATA from the received data through optical connector (PORT3: TORX176). Setting of jumper is shown below.
JP4
OPT COAX RX
Figure 3. Jumper setting, when using DIR
3. All clocks are fed through the PORT1.
R13, R15, R17, R18 R1, R2, R3, R8 : open : 100 or short (0)
DIP Switch setting
[SW2]: AK4113 setting No. 1 2 Pin OCKS1 OCKS0 OFF ON Default ON OFF AK4113 Master Clock setting Refer to Table4 Table 2. SW2 setting The frequency of the master clock output is set by OCKS0 and OCKS1 as shown in Table 4. OCKS1 0 1 1 OCKS0 0 0 1 MCLK Frequency 256fs @fs=88.2/96kHz 512fs @32/44.1/48kHz 128fs @176.4/192kHz Table 3. MCLK Clock
Default

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SW1 setting
[SW1](PDN): Reset of AK4385. Select "H" during operation.
External Analog Filter Circuit
The 2nd order LPF (fc=93.2kHz, Q=0.712) which adds differential outputs of the AK4385 is implemented on the board. When the further attenuation of the out-of-band noise is needed, some additional LPF is required. Analog signal is output through BNC connectors on the board. And the output level of the AK4382A is 5.5Vpp@5V.
LOUT(ROUT-)
R2 R1 R3 C1 R1 R3 C2
+15V
+
22u
100
LOUT+ (ROUT+)
NJM4580D
R2 C2
10k
-15V
Figure 4. On-board analog filter R1 4.7k R2 R3 C1 4.7k 200 3300p Table 4. The value of R, C on this board C2 470p
fin 20kHz 40kHz Frequency Response -0.003dB -0.122dB Table 5. Frequency Response of LPF
80kHz -1.821dB
Amplitude = 20 log K= fc= 0= Q= R2 , R1 0 , 2 1 , 2C1C2R2R3 2C10 . 1+1+1 R1 R2 R 3
K [1-(f/fc) ] +[(1/Q)(f/fc)] 2
22
[dB],

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Control Software Manual Set-up of evaluation board and control software
1. Set up the AKD4385-SC according to previous term. 2. Connect IBM-AT compatible PC with AKD4385-SC by 10-line type flat cable (packed with AKD4385-SC). 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 "AKD4385-SC Evaluation Kit" into the CD-ROM drive. 4. Access the CD-ROM drive and double-click the icon of "AKD4385-SC.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. [Function2] : 6. [Function3] : 7. [Function4] : 8. [Function5]: 9. [SAVE] : 10. [OPEN] : 11. [Write] : Set up the USB interface board (AKDUSBIF-A) in case using the board. Initialize the register of AK4385. Write all registers that is currently displayed. Dialog to write data by keyboard operation. 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 buttons and executed. 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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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 AK4385, 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 AK4385, click [OK] button. If not, click [Cancel] button.
3. [Function2 Dialog] : Dialog to evaluate ATT
Address Box: Input registers address in 2 figures of hexadecimal. Start Data Box: Input starts data in 2 figures of hexadecimal. End Data Box: Input end data in 2 figures of hexadecimal. Interval Box: Data is written to AK4642 by this interval. Step Box: Data changes by this step. Mode Select Box: With checking this check box, data reaches end data, and returns to start data. [Example] Start Data = 00, End Data = 09 Data flow: 00 01 02 03 04 05 06 07 08 09 09 08 07 06 05 04 03 02 01 00 Without checking this check box, data reaches end data, but does not return to start data. [Example] Start Data = 00, End Data = 09 Data flow: 00 01 02 03 04 05 06 07 08 09 When writing the input data to AK4385, click [OK] button. If not, click [Cancel] button.

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4. [Save] and [Open] 4-1. [Save]
Save the current register setting data. The extension of file name is "akr".
(Operation flow) (1) Click [Save] Button. (2) Set the file name and push [Save] Button. The extension of file name is "akr". 4-2. [Open]
The register setting data saved by [Save] is written to AK4385. 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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5. [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".
Figure 4. Window of [F3]

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6. [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 5 opens.
Figure 5. [F4] window

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6-1. [OPEN] buttons on left side and [START] buttons
(1) Click [OPEN] button and select the sequence file (*.aks). The sequence file name is displayed as shown in Figure 6.
Figure 6. [F4] window(2) (2) Click [START] button, then the sequence is executed.
6-2. [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.
6-3. Note
(1) This function 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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7. [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 7opens.
Figure 7. [F5] window
7-1. [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.
7-2. [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.
7-3. 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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Measurement Results
[Measurement condition] * Measurement unit * MCLK * BICK * fs * Bit * Power Supply * Interface * Temperature fs=44.1kHz Parameter S/(N+D) DR S/N fs=96kHz Parameter S/(N+D) DR S/N Input signal 1kHz, 0dB 1kHz, -60dB "0" data Measurement filter 40kLPF 40kLPF 22kLPF, A-weighted 40kLPF 22kLPF, A-weighted Lch 91.3 dB 104.4 dB 107.8 dB 105.7 dB 108.9 dB Rch 91.5 dB 104.4 dB 107.8 dB 105.6 dB 108.8 dB Input signal 1kHz, 0dB 1kHz, -60dB "0" data Measurement filter 20kLPF 22kLPF, A-weighted 22kLPF, A-weighted Lch 95.4 dB 108.7 dB 109.3 dB Rch 95.3 dB 108.7 dB 109.3 dB
: Audio Precision System two Cascade (AP2) : 512fs (44.1kHz), 256fs (96kHz), 128fs (192kHz) : 64fs : 44.1kHz, 96kHz : 24bit : VDD=5V : Internal DIR (44.1kHz, 96kHz) : Room
fs=192kHz Parameter S/(N+D) DR S/N Input signal 1kHz, 0dB 1kHz, -60dB "0" data Measurement filter 40kLPF 40kLPF 22kLPF, A-weighted 40kLPF 22kLPF, A-weighted Lch 92.7 dB 103.4 dB 106.3 dB 104.6 dB 108.0 dB Rch 93.2 dB 103.4 dB 106.3 dB 104.6 dB 107.0 dB

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Plots
(fs=44.1kHz)
AKM
+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
AK4385 FFT VDD=5V, fs=44.1kHz, MCLK=512, 0dBFS input, fin=1kHz
100
200
500 Hz
1k
2k
5k
10k
20k
Figure 8. FFT (fin=1kHz, 0dBFS input)
AKM
+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
AK4385 FFT VDD=5V, fs=44.1kHz, MCLK=512, -60dBFS input, fin=1kHz
100
200
500 Hz
1k
2k
5k
10k
20k
Figure 9. FFT (fin=1kHz, -60dBFS input)

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(fs=44.1kHz)
AKM
+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
AK4385 FFT VDD=5V, fs=44.1kHz, MCLK=512, fin=No signal
200
500 Hz
1k
2k
5k
10k
20k
Figure 10. FFT (Noise Floor)
AKM
+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
AK4385 FFT Out-of-band noise VDD=5V, fs=44.1kHz, MCLK=512fs, fin=No signal
200
500
1k Hz
2k
5k
10k
20k
50k
100k
Figure 11. FFT (Out of band noise)

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(fs=44.1kHz)
AKM
-70
AK4385 THD+N vs. Input Level VDD=5V,fs=44.1kHz, MCLK=512fs, fin=1kHz
-75
-80
-85
-90 d B r A -100
-95
-105
-110
-115
-120 -120
-110
-100
-90
-80
-70
-60 dBFS
-50
-40
-30
-20
-10
+0
Figure 12 . THD+N vs. Input level (fin=1kHz)
AKM
-70
AK4385 THD+N vs. Input Frequency VDD=5V, fs=44.1kHz, MCLK=512fs, 0dBFS input
-75
-80
-85
-90 d B r A -100
-95
-105
-110
-115
-120 20
50
100
200
500 Hz
1k
2k
5k
10k
20k
Figure 13 . THD+N vs. Input Frequency (0dBFS input)

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(fs=44.1kHz)
AKM
+0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -120
AK4385 Linearity VDD=5V fs=44.1kHz, MCLK=512fs, fin=1kHz
d B r A
-110
-100
-90
-80
-70
-60 dBFS
-50
-40
-30
-20
-10
+0
Figure 14. Linearity (fin=1kHz)
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
AK4385 Frequency Response VDD=5V, fs=44.1kkHz, MCLK=512fs, 0dBFS input
6k
8k
10k Hz
12k
14k
16k
18k
20k
Figure 15. Frequency Response (0dBFS input)

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(fs=44.1kHz)
AKM
-80 -85 -90 -95 -100 -105 d B -110 -115 -120 -125 -130 -135 -140 20
AK4385 Crosstalk (Red=Lch, Blue=Rch) VDD=5V, fs=44.1kHz, MCLK=512fs, 0dBFS input
50
100
200
500 Hz
1k
2k
5k
10k
20k
Figure 16. Crosstalk (0dBFS input)

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(fs=96kHz)
AKM
+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
AK4385 FFT VDD=5V, fs=96kHz, MCLK=256fs, 0dBFS input, fin=1kHz
200
500
1k Hz
2k
5k
10k
20k
40k
Figure 17. FFT (fin=1kHz, 0dBFS input)
AKM
+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
AK4385 FFT fs=96kHz, MCLK=256fs, fin=1kHz, 0dBFS input, Notch=ON
200
500
1k Hz
2k
5k
10k
20k
40k
Figure 18. FFT(fin=1kHz, 0dBFS input, Notch)

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(fs=96kHz)
AKM
+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
AK4385 FFT VDD=5V, fs=96kHz, MCLK=256fs, -60dBFS input, fin=1kHz
200
500
1k Hz
2k
5k
10k
20k
40k
Figure 19. FFT (fin=1kHz, -60dBFS input)
AKM
+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
AK4385 FFT VDD=5V, fs=96kHz, fin=No signal
500
1k Hz
2k
5k
10k
20k
40k
Figure 20. FFT (Noise Floor)

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(fs=96kHz)
AKM
-70
AK4385 THD+N vs. Input Level VDD=5V, fs=96kHz, MCLK=256fs, fin=1kHz
-75
-80
-85
-90 d B r A -100
-95
-105
-110
-115
-120 -120
-110
-100
-90
-80
-70
-60 dBFS
-50
-40
-30
-20
-10
+0
Figure 21. THD+N vs. Input level (fin=1kHz)
AKM
-70
AK4385 THD+N vs. Input Frequency VDD=5V, fs=96kHz, MCLK=256fs, 0dBFS input
-75
-80
-85
-90 d B r A -100
-95
-105
-110
-115
-120 40
50
100
200
500
1k Hz
2k
5k
10k
20k
40k
Figure 22. THD+N vs. Input Frequency (0dBFS input)

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(fs=96kHz)
AKM
+0 -10 -20 -30 -40 -50 d B r A -80 -90 -100 -110 -120 -130 -130 -60 -70
AK4385 Linearity VDD=5V, fs=96kHz, MCLK=256fs, fin=1kHz
-120
-110
-100
-90
-80
-70 dBFS
-60
-50
-40
-30
-20
-10
+0
Figure 23. Linearity (fin=1kHz)
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 2.5k 5k 7.5k 10k
AK4385 Frequency Response VDD=5V, fs=96kHz, MCLK=256fs, 0dBFS input
12.5k
15k
17.5k
20k Hz
22.5k
25k
27.5k
30k
32.5k
35k
37.5k
40k
Figure 24. Frequency Response (0dBFS input)

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(fs=96kHz)
AKM
-80 -85 -90 -95 -100 -105 d B -110 -115 -120 -125 -130 -135 -140 40
AK4385 Crosstalk (Red=Lch, Blue=Rch) VDD=5V, fs=96kHz, MCLK=256fs, 0dBFS input
50
100
200
500
1k Hz
2k
5k
10k
20k
40k
Figure 25. Crosstalk (0dBFS input)

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(fs=192kHz)
AKM
+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
AK4385 FFT VDD=5V, fs=192kHz, MCLK=128fs, 0dBFS input, fin=1kHz
500
1k
2k Hz
5k
10k
20k
50k
80k
Figure 26. FFT (fin=1kHz, 0dBFS input)
AKM
+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
AK4385 FFT VDD=5V, fs=192kHz, MCLK=128fs, 0dBFS input, fin=1kHz, Notch=ON
500
1k
2k Hz
5k
10k
20k
50k
80k
Figure 27. FFT(fin=1kHz, 0dBFS input, Notch)

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(fs=192kHz)
AKM
+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
AK4385 FFT VDD=5V, fs=192kHz, MCLK=128fs, -60dBFS input, fin=1kHz
500
1k
2k Hz
5k
10k
20k
50k
80k
Figure 28. FFT (fin=1kHz, -60dBFS input)
AKM
+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
AK4385 FFT VDD=5V, fs=192kHz, MCLK=128fs, fin=No signal
500
1k
2k Hz
5k
10k
20k
50k
80k
Figure 29. FFT (Noise Floor)

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(fs=192kHz)
AKM
-70
AK4385 THD+N vs. Input Level VDD=5V, fs=192kHz, MCLK=128fs, fin=1kHz
-75
-80
-85
-90 d B r A -100
-95
-105
-110
-115
-120 -120
-110
-100
-90
-80
-70
-60 dBFS
-50
-40
-30
-20
-10
+0
Figure 30. THD+N vs. Input level (fin=1kHz)
AKM
-70
AK4385 THD+N vs. Input Frequency VDD=5V, fs=192kHz, MCLK=128fs, 0dBFS input
-75
-80
-85
-90 d B r A -100
-95
-105
-110
-115
-120
90
200
500
1k
2k Hz
5k
10k
20k
50k
80k
Figure 31. THD+N vs. Input Frequency (0dBFS input)

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[AKD4385-SC]
(fs=192kHz)
AKM
+0 -10 -20 -30 -40 -50 d B r A -80 -90 -100 -110 -120 -130 -130 -60 -70
AK4385 Linearity VDD=5V, fs=192kHz, MCLK=128fs, fin=1kHz
-120
-110
-100
-90
-80
-70 dBFS
-60
-50
-40
-30
-20
-10
+0
Figure 32. Linearity (fin=1kHz)
AKM
+1 +0.8 +0.6 +0.4 +0.2 -0 -0.2 -0.4 -0.6 d B r A -0.8 -1 -1.2 -1.4 -1.6 -1.8 -2 -2.2 -2.4 -2.6 -2.8 -3 5k 10k 15k 20k
AK4385 Frequency Response VDD=5V, fs=192kHz, MCLK=128fs, 0dBFS input
25k
30k
35k
40k Hz
45k
50k
55k
60k
65k
70k
75k
80k
Figure 33. Frequency Response (0dBFS input)

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(fs=192kHz)
AKM
-80 -85 -90 -95 -100 -105 d B -110 -115 -120 -125 -130 -135 -140
AK4385 Crosstalk (Red=Lch, Blue=Rch) VDD=5V, fs=192kHz, MCLK=128fs, 0dBFS input
90
200
500
1k
2k Hz
5k
10k
20k
50k
80k
Figure 34. Crosstalk (0dBFS input)

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Revision History
Date (YY/MM/DD) 06/01/23 06/04/17 Manual Revision KM082700 KM082701 Board Revision 0 1
Reason First edition GND pattern change. P4 Change of calculation.
Contents
Change
0=
1 C1C2R2R3
0=
1 2C1C2R2R3
P12 fs=192kHz Table Data add. Add P13 - 27 Plot Data add.
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.

28
2006/04
1
-15V
+15V VOP+
T1 NJM78M05FA R4 short
GND
VOPC7
1
+ C4 C3
IN
OUT
3
C2
AVDD 0.1u
+ C1
470u
470u
0.1u
47u
R3 R2 R1 R8
open open open open
MCLK BICK LRCK SDATA
1 2 3 4 5
U8
4113_MCLKO1
A
R13 R15 R17 R18
5.1 100 100 100
MCLK BICK SDTI1 LRCK
1 2 3 4 5 6 7 8
MCLK BICK SDTI LRCK PDN CSN CCLK CDTI
4113_BICK 4113_SDTO 4113_LRCK PDN
C5
C6
10p
open
D3V
R20 R22 R21
10k
PORT2 9 7 5 3 1 uP-I/F
10k
10k
AVDD
U2
10 8 6 4 2
CSN CCLK CDTI
R23 R24 R25
470 470 470
2 3 5 6 11 10 14 13 1 15
1A 1B 2A 2B 3A 3B 4A 4B A/B G
1Y 2Y 3Y 4Y VCC GND
4 7 9 12 16 8
C22
74LVC157
0.1u
1
+
PORT1 10 9 8 7 6
EXT
AVDD
DZFL DZFR VDD VSS AOUTL+ AOUTLAOUTR+ AOUTR-
16 15 14 13 12 11 10 9
C8 C9
A
2
0.1u
+
10u
AOUTL+ AOUTLAOUTR+ AOUTR-
AK4385
Title Size A3 Date: Document Number
AKD4385-SC
AK4385
Sheet 1 of 3
Rev 0
Thursday, January 12, 2006
1
R28
R29
4.7K AOUTLR32
4.7K
-15V C20
200
470p VOPVOP4
C23
C24 R35
J2 R36 +
3900p AOUTL+
R34
NC
2 3
200
220
AOUTL
10u
1
4.7K
R41
C55
U7A C54 NJM4580 22u
8
R37
4.7K
470p VOP+
10k
10u
A
R30
R31
4.7K AOUTRR33
4.7K
C21
200
470p
VOP4
C48 C50 R39 J4 R40 +
3900p AOUTR+
R38
NC
6 5
200
220
AOUTR
7
4.7K
R43
C47
U7B C49 NJM4580 22u
8
R42
4.7K
470p VOP+
10k
1
+
C37
+ +15V
C32
C31
0.1u
+ +
VOP+
C38
0.1u
A
Title
AKD4385-SC
Size A3 Date: Document Number
Analog
Sheet 2 of 3
Rev 0
Thursday, January 12, 2006
1
AVDD
U3
T3 upc3533HF R26 short
SW2
3
C10 0.1u
1 2 3 4 5 6 7
1A 1Y 2A 2Y 3A 3Y GND
VCC 6A 6Y 5A 5Y 4A 4Y
14 13 12 11 10 9 8
VOP+
C29
GND
1
C11 47u + C12 0.1u
IN
OUT
D3V
OCKS1 H L H
OCKS0 L L H
Master Clock 512fs@fs=32k/44.1k/48kHz 256fs@fs=88.2k/96kHz 128fs@fs=176.4k/192kHz
0.1u
+
47u
74HC14
PDN
SW1 PDN
3 2 1
C28 0.1u
L H
D1 HSU119 1 2
R49 10k
R44 5.1
U5 SW2
1
C15 10u + C13 0.1u
DVDD
CM0/CDTO/CAD1
30
OCKS0 OCKS1
2 3 4
OCKS
C30
2 1
2
C14 0.1u
DVSS
CM1/CDTI/SDA
29
R46 10k
3
TVDD
OCKS1/CCLK/SCL
28
R45 10k
4
V/TX
OCKS0/CSN/CAD0
27
5
XTI
MCKO1
26
4113_MCLKO1
6
A
XTO
MCKO2
25
A
7
R48 15k
PDN
DAUX
24
8
C16 10u
R
BICK
23
4113_BICK
9
+ C17 0.1u
AVDD
SDTO
22
4113_SDTO
10
AVSS
LRCK
21
TEST1
4113_LRCK
11
J1 COAX C18 0.1u
RX1
INT0
20
12
RX2/DIF0
FS96/I2C
19
R27 75
13
RX3/DIF1
P/SN
18
14
COAX JP4 RX L1 short OPT
RX4/DIF2
INT1
17
15
RX5
RX6/IPS
16
AVDD
1
2
AK4113
PORT3
6 5
6 5
GND VCC GND OUT
4 3 2 1
C19 0.1u
R47
short
TORX173
Title
AKD4385-SC
Size A3 Date:
1
Document Number
DIR
Thursday, January 12, 2006 Sheet 3 of 3
Rev 0

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