AKD4628 [AKM]
Evaluation board Rev.B for AK4628; 评估板Rev.B的为AK4628
| 型号： | AKD4628 |
| 厂家： | 
ASAHI KASEI MICROSYSTEMS |
| 描述： | Evaluation board Rev.B for AK4628 |
| 文件： | 总39页 (文件大小：458K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ASAHI KASEI
[AKD4628]
AKD4628
Evaluation board Rev.B for AK4628
GENERAL DESCRIPTION
The AKD4628 is an evaluation board for the AK4628, a single chip CODEC that includes two channels of
ADC and eight channels of DAC. The AKD4628 also has the digital audio interface and can achieve the
interface with digital audio systems via opt-connector or BNC connector.
n
Ordering guide
AKD4628 --- Evaluation board for AK4628
(Cable for connecting with printer port of IBM-AT compatible PC
and control software are packed with this.) This control software can’t operate
on Windows NT.
FUNCTION
o
o
On-board analog input buffer circuit
Compatible with 2 types of interface
- DIT(AK4103)/DIR(AK4112B) with optical output/input and BNC input
- Direct interface with AC3 decoder by 10pin header
10pin header for serial control interface
o
-15V +15V
GND
Regulator
LIN
Input
Buffer
RIN
Control Data
BNC In
10pin Header
LOUT1
ROUT1
LOUT2
ROUT2
LOUT3
ROUT3
LOUT4
ROUT4
AK4112B(DIR)
AK4103(DIT)
AK4628
Opt In
Output
Buffer
Opt Out
AC3
10pin Header
Fig 1. AKD4628 Block Diagram
*Circuit diagram and PCB layout are attached at the end of this manual.
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<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
n
Operation sequence
(1) Set up the power supply lines.
[+12V]
[-12V]
[AGND] (black jack)
[DGND] (black jack)
(orange jack)
(blue jack)
= +12 ~ +15V
= -12 ~ -15V
= 0V
= 0V
Each supply line should be distributed from the power supply unit.
±12V are supplied to analog interface.
+12V is regulated to +5V and +3.3V by regulators(T1,T2).
+5V is supplied to digital interface, AK4628 and TVDD of AK4112B.
+3.3V is supplied to AVDD and DVDD of AK4112B and TVDD of AK4628.
(2) Set up the evaluation mode and jumper pins. (See p.6.)
(3) Power on.
The AK4628, AK4112B and AK4103 should be reset once bringing PDN(SW1) “L” upon power-up.
PORT1
(4) Set up software.
uP-I/F
10
9
The control mode of AK4628 and AK4112B is fixed to “serial”.
CSN
CCLK
CDTI
The AKD4628 can be controlled via the printer port (parallel port) of IBM-AT
compatible PC. Connect PORT1(uP-I/F) with PC by 10-line flat cable
packed with the AKD4628.
CDTO
2
1
Take care of the direction of connector. There is a mark at pin#1.
The pin layout of PORT1 is as Figure 2.
Figure 2. PORT1 pin layout
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<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
n
Evaluation mode
1) Evaluation of ADC
TOTX176 is used for digital output. Clock mode of the AK4112B should be set to PLL mode or X’tal mode.
2) Evaluation of DAC
TORX176 or BNC is used for digital input. Clock mode of the AK4112B should be set to PLL mode. “4112A”
should be selected on JP4,5,6 and 7.
3) Loopback mode
Clock mode of the AK4112B should be set to PLL mode or X’tal mode. “4112A” should be selected
on JP4,5,6 and 7.
4) Evaluation of DAC using DSP
“DSP” should be selected on JP4,5,6 and 7.
Evaluation mode
ADC
AK4112B clock set-up
JP4,5,6,7 Used I/F
CM1=”0”, CM0=”0”(PLL mode) or
CM1=”0”, CM0=”1”(X’tal mode)
CM1=”0”, CM0=”0”(PLL mode)
CM1=”0”, CM0=”1”(X’tal mode)
CM1=”0”, CM0=”0”(PLL mode)
Don’t
TOTX176
care
optical output
DAC
Loopback
Using DSP
“4112A”
“4112A”
“DSP”
PORT5(10-pin Header)
(Note.)1. Software “4112.exe” packed with the AKD4628 is used for set-up of the AK4112B.
2. CM1 and CM0 bits are D5 and D4 of Addr=00H, respectively
Table 2.Evalution mode
n
DIP Switch set up. (See the datasheet of AK4628 and AK4103)
1.DFS_4628(SW2-1) set up of AK4628 Sampling speed(fs).
DFS_4628
OFF
Sampling Speed (fs)
Default
Normal Speed Mode
Double Speed Mode
32kHz~48kHz
64kHz~96kHz
ON
Table 3. Set up of Sampling Speed (fs)
2.V(SW2-2) set up of for AK4103Validity detect.
V
Validity
Valid
Invalid
Default
OFF
ON
Table 4. Set up of Validity
3.FS3(SW2-3) FS2(SW2-4) set up of AK4103 sampling frequency setting.
FS3
OFF
OFF
ON
FS2
OFF
ON
OFF
ON
Sampling frequency setting
Default
44.1kHz
48kHz
Reserved
32kHz
ON
Table 5. Set up of sampling frequency setting
4.CKS0(SW2-5) set up of AK4103 System Clock .
CKS1
OFF
ON
MCLK
256fs
512fs
fs
Default
28k-108kHz
28k-54kz
Table 6.Set up of System Clock
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<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
5.DIF0(SW2-6) set up of AK4103 Audio Serial Interface Format.
DIF0
Audio Serial
LRCK
BICK
Interface Format
Default
OFF
ON
24bit, Left justified
24bit, I2S
H/L
L/H
48fs-128fs
48fs-128fs
Table 7. Set up of Audio Serial Interface Format
n
Jumper pin set up
[JP1] (GND)
---Analog GND and Digital GND
[JP4,5,6,7]
(SDTI1,2,3,4) --- AK4628 SDTI1,2,3,4 input source select
<DSP>
: Serial Data is input from DSP via PORT4.
<4112A>
: Serial Data is input from AK4112B SDTO. <default>
[JP3] (V/TX)
<V>
--- AK4112B V/TX output select.
: Validity.
<default>
<TX>
: Transmit channel (through data)
[JP2](OPT/COAX) --- The source of the biphase signal input to the AK4112B
<OPT_IN>
<RX2>
: Optical input to RX1 of AK4112B
: BNC input to RX1 of AK4112B
<default>
n
n
The function of the toggle SW.
[SW1] : Resets the AK4628, AK4112B and AK4103. Keep “H” during normal operation.
The indication content for LED.
[LE1] (DZF1)
: Zero detection
[LE2] (DZF2_OVF) : Zero detection or Overflow Detection
[LE3] (ERF)
[LE4] (FS96)
[LE5] (AUTO)
[LE6] (V)
: AK4112B unlock and parity error output.
: AK4112B 96kHz sampling detect.
: AK4112B AC-3/MPEG detect.
: AK4112B Validity detect
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<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
n Analog input circuit
3.0Vpp
Op-amp circuit
4580
AK4628
RIN 32
LIN 31
6.0Vpp
Signal
330
22u
+
-
330
Same circuit
1) Gain
Gain of analog input circuit is
330/(330+330) = -6.02dB.
Therefore input level for this board is
+0.51dBV(=3.0Vpp)+6.02dB
= +6.53dBV = 6.00Vpp = 2.12Vrms.
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<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
n Analog output circuit
3.0Vpp
6.0Vpp
Signal
NJM4580
22u
AK4628
ROUT1
220
28
27
26
25
24
23
22
21
+
-
10k
Same circuit
330p
LOUT1
ROUT2
LOUT2
ROUT3
LOUT3
ROUT4
LOUT4
4.7k
Same circuit
Same circuit
Same circuit
Same circuit
Same circuit
Same circuit
4.7k
1st order LPF on this board
1) Frequency response of HPF
The HPF is implemented on board to cancel the DC offset of analog output of AK4628.
Frequency response of 1st-order HPF
| Amplitude |2 = 1/{1+(fc/f)2}; fc=1/2pRC=0.7Hz@R=10k,C=22u
fin
20Hz
Frequency Response
-0.006dB
2) Gain, S/N and frequency response of op-amp circuit
1st-order filter with non-inverting amp is implemented on board to double the analog output level and attenuate out-of-band
noise.
a) Gain
The gain is
1+4.7k/4.7k = +6.02dB.
Therefore the output level of this board is
0.51dBV(=3.0Vpp) + 6.02dB
= 6.53dBV = 6.00Vpp = 2.12Vrms.
-6-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
c) Frequency response of filter
Frequency response of the 1st-order filter
| Amplitude |2 = K*{1+(f/fc2)2}/{1+(f/fc1)2};
K = 1+4.7k/4.7k = 2,
fc1 = 1/2pRC = 102.7kHz@R=4.7k,C=330p,
fc2 = K*fc1 = 205.3kHz
Frequency response referenced to output level of this board is as following table:
fin
DC
20kHz
40kHz
80kHz
145kHz
-3dB
¥
Frequency Response
0dB
-0.121dB
-0.452dB
-1.448dB
-6dB
If the frequency response of filter influences the system, 1st-order LPF is also available as the following figure:
3.0Vpp
6.0Vpp
Signal
LPF
220
4580
22u
AK4628
ROUT1
28
27
26
25
24
23
+
-
10k
Same circuit
3300p
LOUT1
ROUT2
LOUT2
ROUT3
LOUT3
4.7k
Same circuit
Same circuit
Same circuit
Same circuit
4.7k
Same circuit
Same circuit
22
21
ROUT4
LOUT4
Example of LPF with flat response.
Frequency response of this LPF
| Amplitude |2 = 1/{1+(f/fc)2};
fc = 1/2pRC = 219kHz@R=220,C=3300p
Frequency response referenced to output level of this board is as following table:
fin
DC
20kHz
40kHz
80kHz
219kHz
-3dB
¥
Frequency Response
0dB
-0.036dB
-0.142dB
-0.543dB
-¥ dB
The total frequency response of this board is sum of the external filter and internal LPF of AK4628.
These filters are effective to attenuate the high frequency noise since some measurement units is sensitive for out-of-band noise.
-7-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
AK4628 Control Program operation manual
n Set-up of evaluation board and control software
This evaluation board does not correspond to I2C control.
1. Set up the AKD4628 according to above mentioned setting.
2. Connect IBM-AT compatible PC with AKD4628 by 10-line type flat cable (packed with AKD4628). Take care of the
direction of 10pin header. (Please install the driver in the CD-ROM-disk 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-disk labeled “AKD4628 Control Program ver 1.0” into the CD-ROM-disk drive.
4. Access the CD-ROM-disk drive and double-click the icon of “akd4628.exe” to set up the control program.
5. Then please evaluate according to the followings.
Attention: Please use fixed “CAD1-0=01”.
n Operation flow
Keep the following flow.
1. Set up the control program.
2. Click “Port Setup” button.
3. Then set up the dialog and input data.
n Explanation of each buttons
1. [Port Setup] :
set up the printer port.
2. [Write default] : initialize the register of AK4628.
3. [Function1] :
4. [Function2] :
5. [Write] :
Dialog to write data by keyboard operation.
Dialog to evaluate IPGA and ATTL/ATTR/ATTM.
write data to each register.
-8-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
n Explanation of each dialog
1. [Function1 Dialog] : Dialog to write data by keyboard operation
Address Box: Input register address in 2 figures of hexadecimal.
Data Box:
Input register data in 2 figures of hexadecimal.
If you want to write the input data to AK4628, click “OK” button. If not, click “Cancel” button.
2. [Function2 Dialog] : Dialog to evaluate IPGA and ATTL/ATTR/ATTM
This dialog corresponds to only addr=05H, 0AH, 0BH and 0CH.
Address Box: Input register address in 2 figures of hexadecimal.
Start Data Box: Input start data in 2 figures of hexadecimal.
End Data Box: Input end data in 2 figures of hexadecimal.
Interval Box:
Step Box:
Data is written to AK4628 by this interval.
Data changes by this step.
Mode Select Box:
If you check 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
If you do not check 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
If you want to write the input data to AK4628, click “OK” button. If not, click “Cancel” button.
3. [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”.
If you want to write the input data to AK4628, click “OK” button. If not, click “Cancel” button.
n 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.
n Attention on the operation
If you set up Function1 or Function2 dialog, input data to all boxes. Attention dialog is indicated if you input data or
address that is not specified in the datasheet or you click “OK” button before you input data. In that case set up the dialog
and input data once more again. These operations does not need if you click “Cancel” button or check the check box.
-9-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
AK4112B Control Program ver 1.0 operation manual
n Set-up of evaluation board and control software
This board is used AK4112B as “DIR”. This software must set up when Evaluation of DAC using DSP and
Clock Mode selected X’tal.(See P3. (4)).
This evaluation board does not correspond to I2C control.
1. Set up the AKD4628 according to above mentioned setting.
2. Connect IBM-AT compatible PC with AKD4628 by 10-line type flat cable (packed with AKD4628). Take care of the
direction of 10pin header. (Please install the driver in the CD-ROM-disk 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-disk labeled “AKD4628 Control Program ver 1.0” into the CD-ROM-disk drive.
4. Access the CD-ROM-disk drive and double-click the icon of “akd4112.exe” to set up the control program.
5. Then please evaluate according to the follows.
n Operation flow
Keep the following flow.
1. Set up the control program.
2. Click “Port Setup” button.
3. Then set up the dialog and input data.
n Explanation of each buttons
1. [Port Setup] :
set up the printer port.
2. [Write default] : initialize the register of AK4112.
3. [All read] : read all registers.
4. [Read] :
5. [Write] :
read data from each register.
write data to each register.
If you want to write the input data to AK4112, click “OK” button. If not, click “Cancel” button.
n 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.
-10-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
MEASUREMENT RESULTS
1) ADC part
[Measurement condition]
· Measurement unit: Audio Precision, System two, Cascade
· MCLK
· BICK
: 256fs
: 64fs
· fs
: 48kHz, 96kHz
· BW
: 10Hz~20kHz(fs=48kHz), 10Hz~48kHz(fs=96kHz)
· Bit
: 24bit
· Power Supply
· Interface
· Temperature
: AVDD=DVDD=5V, TVDD=3.3V
: DIT(AK4103)
: Room
fs=48kHz
Parameter
S/(N+D)
DR
Input signal
1kHz, -0.5dB 20kLPF
1kHz, -60dB
no signal
Measurement filter
Lch
Rch
95.4dB
99.1dB
101.8dB
99.5dB
102.5dB
95.3dB
99.3dB
102.2dB
99.4dB
102.5dB
20kLPF
20kLPF+A-weighted
20kLPF
S/N
20kLPF+A-weighted
fs=96kHz
Parameter
S/(N+D)
DR
Input signal
1kHz, -0.5dB fs/2
1kHz, -60dB
Measurement filter
Lch
Rch
93.7dB
97.6dB
104.1dB
97.7dB
104.3dB
93.7dB
97.6dB
104.1dB
97.7dB
104.4dB
fs/2
20kHz+A-weighted
fs/2
20kHz+A-weighted
S/N
no signal
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<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
2) DAC part
[Measurement condition]
· Measurement unit: Audio Precision, System two, Cascade(fs=48kHz, 96kHz)
· MCLK
· BICK
: 256fs
: 64fs
· fs
: 48kHz, 96kHz
· BW
: 10Hz~22kHz (fs=48kHz), 10Hz~40kHz (fs=96kHz)
· Bit
: 24bit
· Power Supply
· Interface
· Temperature
: AVDD=DVDD=5V, TVDD=3.3V
: DIR(AK4112B)
: Room
fs=48kHz
Parameter
S/(N+D)
DR
Input signal
Measurement filter
Lch
Rch
1kHz, -0.5dB 20kLPF
97.7dB
102.6dB
105.7dB
102.5dB
105.9dB
97.4dB
102.6dB
105.5dB
102.5dB
105.9dB
1kHz, -60dB
no signal
20kLPF
22kLPF+A-weighted
20kLPF
S/N
22kLPF+A-weighted
fs=96kHz
Parameter
S/(N+D)
DR
Input signal
1kHz, -0.5dB 40kHzLPF
1kHz, -60dB
Measurement filter
Lch
Rch
95.6dB
100.6dB
105.5dB
102.8dB
105.9dB
95.6dB
100.7dB
105.5dB
102.5dB
105.9dB
40kHzLPF
22kHz+A-weighted
40kHz
S/N
no signal
22kHz+A-weighted
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<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
1.ADC
(ADC fs=48kHz)
AKM
AK4628 ADC FFT (fs=48kHz; fin=1kHz, 0dBFS input)
FFT points=16384, Avg.8 W indow=Equiripple
+0
-20
-40
-60
-80
-100
-120
-140
-160
d
B
F
S
-180
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
FFT (Input=-0.5dBFS, fin=1kHz)
AKM
AK4628 ADC FFT (fs=48kHz; fin=1kHz,-60dBFS input )
FFT points=16384, Avg.8, W indow=Equiripple
+0
-20
-40
-60
d
B
F
S
-80
-100
-120
-140
-160
-180
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
FFT (Input=-60dBFS, fin=1kHz)
-13-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
(ADC fs=48kHz)
AKM
AK4628 ADC FFT (fs=48kHz; No signal input)
FFT points=16384, Avg.8, W indow=Equripple
+0
-20
-40
-60
d
B
F
S
-80
-100
-120
-140
-160
-180
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
FFT (noise floor)
-14-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
(ADC fs=48kHz)
AKM
AK4628 ADC THD+N vs. Input Level (fs=48kHz; fin=1kHz )
-70
-75
-80
-85
-90
d
B
-95
F
S
-100
-105
-110
-115
-120
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBr
THD + N vs Amplitude (fin=1kHz)
AKM
AK4628 ADC THD+N vs. Input Frequency (fs=48kHz;-0.5dBFS input)
-70
-75
-80
-85
-90
d
B
F
S
-95
-100
-105
-110
-115
-120
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
THD + N vs Input Frequency (Input=-0.5dBFS)
-15-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
(ADC fs=48kHz)
AKM
AK4628 ADC Linearity (fs=48kHz; fin=1kHz)
+0
-10
-20
-30
-40
-50
-60
d
B
-70
F
S
-80
-90
-100
-110
-120
-130
-140
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBr
Linearity(fin=1kHz)
AKM
AK4628 ADC Frequency Response (fs=48kHz; -0.5dBFS input)
+0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
d
B
F
S
-1
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Frequency Response(Input Level=-0.5dBFS)
(including input RC filter)
-16-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
(ADC fs=48kHz)
AKM
AK4628 ADC Crosstalk (fs=48kHz; -0.5dBFS input)
Upper@1kHz; Lch--->Rch, Lower@1kHz; Rch--->Lch
-80
-85
-90
-95
-100
-105
-110
d
-115
B
-120
-125
-130
-135
-140
-145
-150
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Crosstalk (Upper@1k = Rch, Lower@1k = Lch)
-17-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
(ADC fs=96kHz)
AKM
AK4628 ADC FFT (fs=96kHz; fin=1kHz, -0.5dBFS Input)
FFT points=16384, Avg.8, Window=Equiripple
+0
-20
-40
-60
d
B
F
S
-80
-100
-120
-140
-160
-180
40 50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
FFT(Input=-0.5dBFS, fin=1kHz)
AKM
AK4628 ADC FFT (fs=96kHz; fin=1kHz, -60dBFS input)
FFT stpeps=16384, Avg.8, Window=Equiripple
+0
-20
-40
-60
d
B
F
S
-80
-100
-120
-140
-160
-180
40 50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
FFT(Input=-60dBFS, fin=1kHz)
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<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
(ADC fs=96kHz)
AKM
AK4628 ADC FFT (fs=96kHz; No signal input)
FFT stpeps=16384, Avg.8, Window=Equiripple
+0
-20
-40
-60
d
B
F
S
-80
-100
-120
-140
-160
-180
40 50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
FFT(Noise floor)
-19-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
(ADC fs=96kHz)
AKM
AK4628 ADC THD+N vs. Input Level (fs=96kHz; fin=1kHz)
-60
-65
-70
-75
-80
-85
d
B
-90
F
S
-95
-100
-105
-110
-115
-120
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBr
THD + N vs Amplitude(fin=1kHz)
AKM
AK4628 ADC THD+N vs. Input Frequency (fs=96kHz; -0.5dBFS input)
-80
-82.5
-85
-87.5
-90
-92.5
-95
-97.5
-100
d
B
F
S
-102.5
-105
-107.5
-110
-112.5
-115
-117.5
-120
40 50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
THD + N vs Input Frequency(Input Level=-0.5dBFS)
-20-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
(ADC fs=96kHz)
AKM
AK4628 ADC Linerity (fs=96kHz; fin=1kHz)
+0
-10
-20
-30
-40
-50
-60
d
B
-70
F
S
-80
-90
-100
-110
-120
-130
-140
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBr
Linearity(fin=1kHz)
AKM
AK4628 ADC Frequency Response (fs=96kHz; -0.5dBFS input)
+0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
d
B
F
S
-1
40 50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
Frequency Response(Input Level=-0.5dBFS)
(including input RC filter)
-21-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
(ADC fs=96kHz)
AKM
AK4628 ADC Crosstalk (fs=96kHz; -0.5dBFS input)
Upper@1kHz; Lch--->Rch, Lower@1kHz; Rch--->Lch
-80
-85
-90
-95
-100
-105
-110
d
-115
B
-120
-125
-130
-135
-140
-145
-150
40 50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
Crosstalk (Upper = Rch, Lower = Lch)
-22-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
2.DAC
(DAC fs=48kHz)
AKM
AK4628 DAC FFT (fs=48kHz, fin=1kHz, 0dBFS input)
+0
-20
-40
-60
d
-80
B
r
-100
A
-120
-140
-160
-180
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
FFT (Input=0dBFS, fin=1kHz)
AKM
AK4628 DAC FFT (fs=48kHz; fin=1kHz, -60dBFS input)
FFT points=16384, Avg.8, W indow=Equiripple
+0
-20
-40
-60
d
-80
B
r
-100
A
-120
-140
-160
-180
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
FFT (Input=-60dBFS, fin=1kHz)
-23-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
(DAC fs=48kHz)
AKM
AK4628 DAC FFT (No data input)
FFT points=16384, Avg.8, W indow=Equiripple
+0
-20
-40
-60
d
-80
B
r
-100
A
-120
-140
-160
-180
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
FFT (Noise floor)
AKM
AK4628 DAC FFT (Outband Noise)
FFT points=16384, Avg.8, W indow=Equiripple
+0
-20
-40
-60
d
-80
B
r
-100
A
-120
-140
-160
-180
100
200
500
1k
2k
5k
10k
20k
50k
100k
Hz
FFT (Outband noise)
-24-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
(DAC fs=48kHz)
AKM
AK4628 DAC THD+N vs.Input Level (fs=48kHz, fin=1kHz)
-80
-82.5
-85
-87.5
-90
-92.5
-95
d
-97.5
B
-100
-102.5
-105
r
A
-107.5
-110
-112.5
-115
-117.5
-120
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
THD + N vs Amplitude(fin=1kHz)
AKM
AK4628 DAC THD+N vs. fin (fs=48kHz, 0dBFS input)
-80
-82.5
-85
-87.5
-90
-92.5
-95
d
B
r
-97.5
-100
-102.5
-105
A
-107.5
-110
-112.5
-115
-117.5
-120
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
THD + N vs Input Frequency (Input=0dBFS)
-25-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
(DAC fs=48kHz)
AKM
AK4628 DAC Linearity (fs=48kHz, fin=1kHz)
+0
-10
-20
-30
-40
-50
d
B
r
-60
-70
-80
A
-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
AK4628 DAC Frequncey Response (fs=48kHz, 0dBFS Input)
+0.5
+0.4
+0.3
+0.2
+0.1
+0
d
B
r
A
-0.1
-0.2
-0.3
-0.4
-0.5
2k
4k
6k
8k
10k
Hz
12k
14k
16k
18k
20k
Frequency Response(Input Level=0dBFS)
(including external RC filter)
-26-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
(DAC fs=48kHz)
AKM
AK4628 DAC Crosstalk (fs=48kHz, 0dBFS Input)
Upper@1kHz; Lch--->Rch, Lower@1kHz; Rch--->Lch
-80
-82.5
-85
-87.5
-90
-92.5
-95
-97.5
d
-100
B
-102.5
-105
-107.5
-110
-112.5
-115
-117.5
-120
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Crosstalk(Upper=Rch, Lower=Lch)
-27-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
(DAC fs=96kHz)
AKM
AK4628 DAC FFT (fs=96kHz; fin=1kHz -0.5dBFS input; Notch; on)
+0
-10
-20
-30
-40
-50
-60
-70
d
-80
B
-90
-100
-110
-120
-130
-140
-150
-160
-170
r
A
-180
40 50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
FFT (Input=0dBFS, fin=1kHz, Notch)
AKM
AK4628 DAC FFT (fs=96kHz; fin=1kHz, -60dBFS input)
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
A
-180
40 50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
FFT (Input=-60dBFS,fin=1kHz)
-28-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
(DAC fs=96kHz)
AKM
AK4628 DAC FFT (fs=96kHz; No data input)
+0
-10
-20
-30
-40
-50
-60
-70
d
-80
B
-90
-100
-110
-120
-130
-140
-150
-160
-170
r
A
-180
40 50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
FFT (Noise floor)
AKM
AK4628 DAC FFT (Out of Band Noise )
+0
-10
-20
-30
-40
-50
-60
-70
d
B
r
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
A
-180
100
200
500
1k
2k
5k
10k
20k
50k
100k
Hz
FFT (Outband noise)
-29-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
(DAC fs=96kHz)
AKM
AK4628 DAC THD+N vs. Input Level (fs=96kHz; fin=1kHz)
-80
-82.5
-85
-87.5
-90
-92.5
-95
d
-97.5
B
-100
-102.5
-105
r
A
-107.5
-110
-112.5
-115
-117.5
-120
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
THD + N vs Amplitude (fin=1kHz)
AKM
AK4628 DAC THD+N vs. Input Frequency (fs=96kHz; -0.5dBFS input)
-80
-82.5
-85
-87.5
-90
-92.5
-95
d
B
r
-97.5
-100
-102.5
-105
A
-107.5
-110
-112.5
-115
-117.5
-120
40 50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
THD + N vs Input Frequency (Input=0dBFS)
-30-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
(DAC fs=96kHz)
AKM
AK4628 DAC Linearity (fs=96kHz; fin=1kHz)
+0
-10
-20
-30
-40
-50
d
B
r
-60
-70
-80
A
-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
AK4628 DAC Frequency Response (fs=96kHz; 0dBFS input)
+0.5
+0.4
+0.3
+0.2
+0.1
+0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
d
B
r
A
-1
2.5k
5k
7.5k
10k
12.5k
15k
17.5k
20k
Hz
22.5k
25k
27.5k
30k
32.5k
35k
37.5k
40k
Frequency Response(Input Level=0dBFS)
(including external RC filter)
-31-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
(DAC fs=96kHz)
AKM
AK4628 DAC Crosstalk (fs=96kHz; 0dBFS input)
Upper@1kHz; Lch--->Rch, Lower@1kHz; Rch--->Lch
-80
-82.5
-85
-87.5
-90
-92.5
-95
-97.5
d
-100
B
-102.5
-105
-107.5
-110
-112.5
-115
-117.5
-120
40 50
100
200
500
1k
2k
5k
10k
20k
40k
Hz
Crosstalk (Upper=Rch, Lower=Lch)
-32-
<KM069700>
2002/9
ASAHI KASEI
[AKD4628]
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.
-33-
<KM069700>
2002/9
5
4
3
2
1
U1
AVDD1
+12V
1
R1
R4
R6
10k
10k
10k
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
C2
U2A
NJM4580
CSN
CCLK
CDTI
L5V
A1
A2
A3
A4
A5
A6
A7
A8
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
C1
10u
2.2u
J1
RIN
C3
22u
R7
330
3
+
-
CDTO
R2 470
R3 470
R5 470
C4
0.1u
C5
0.1u
2
PORT1
R8
(open)
1
2
3
4
5
10 CSN
R9
100
100
100
R10
330
9
8
7
6
CCLK
CDTI
CDTO
1
19
R11
R13
G1
G2
-12V
D
C
B
A
D
C
B
A
R1251
74HCT541
uP-I/F
U3
+12V
7
U2B
J2
LIN
C6
R15
330
NJM4580
5
R14
100
22u
+
-
4112A_MCKO1
1
2
33
32
31
30
29
28
27
26
25
24
23
6
DZF2/OVF
SDOS
I2C
DZF2/OVF
RIN1
R16
(open)
R17
330
3
SMUTE
BICK
LIN1
-12V
R18
R19
R20
R22
R23
R25
R26
100
100
100
100
100
100
100
4
4112A_BICK
4112A_LRCK
SDTI1
NC
5
LRCK
SDTI1
SDTI2
SDTI3
SDTO
DAUX
DFS0
TST2
6
AK4628
ROUT1
LOUT1
ROUT1
LOUT1
ROUT2
LOUT2
ROUT3
LOUT3
7
SDTI2
R24
1k
LE1
DZF1
8
SDTI3
ROUT2
LOUT2
AVDD2
9
4529_SDTO
SDTI4
3
TR1
DZF1
10
11
RN1202
(10k,10k)
ROUT3
LOUT3
DFS_4529
T1
NJM78M05FA
L1
R28
LE2
DZF2/OVF
1
3
2
1
1k
L5V
+12V
IN OUT
ROUT4
LOUT4
AVDD2
C8
47u
10u
+
C7
3
TR2
DZF2/OVF
0.1u
RN1202
(10k,10k)
C9
0.1u
+3.3V
R29
100
L2
L3
C10
C11
0.1u
+
2
1
2
1
10u
AVDD1
AVDD2
PDN
(short)
10u
R30
5.1
C12
10u
+12V
C13
22u
J3
U7B
R31
5
6
NJM4580 220
7
ROUT4
+
-
ROUT4
+12V
U4B
+12V
U6B
C14
22u
C15
22u
R32
10k
+12V
U5B
NJM4580 220
7
C16
22u
J4
J5
J6
R33
R34
-12V
R36
5
NJM4580 220
7
ROUT1
5
6
NJM4580 220
7
ROUT3
+
+
-
ROUT1
ROUT3
5
6
ROUT2
+
-
ROUT2
R35
10k
6
R37
10k
-
R38
10k
330p C17
-12V
-12V
-12V
330p C18
330p C19
330p C20
R40
R39
4.7k
4.7K
R43
4.7K
R41
4.7k
+12V
U7A
C21
22u
R45
4.7K
R42
4.7k
R46
4.7K
R44
4.7k
J7
R47
+12V
C22
22u
3
2
NJM4580 220
1
LOUT4
+12V
U5A
+
-
LOUT4
J8
C23
22u
+12V
U6A
U4A
R49
J9
C24
22u
R48
10k
3
2
NJM4580 220
1
LOUT1
R51
J10
+
-
LOUT1
LOUT2
3
NJM4580 220
1
LOUT2
R53
+
-12V
R50
10k
3
2
NJM4580 220
1
LOUT3
+
-
LOUT3
R52
10k
2
-
R54
10k
330p C25
-12V
-12V
C27
C26
330p
-12V
330p
330p C28
R56
4.7K
R55
4.7k
R57
4.7k
R60
4.7K
R61
4.7K
R58
4.7k
R62
4.7K
R59
4.7k
Title
AKD4628
Size
A3
Document Number
Rev
AK4628
B
Date:
Sheet
Thursday, September 26, 2002
1
of
3
5
4
3
2
1
5
4
3
2
1
JP1
GND
D
C
B
A
D
C
B
A
J11
(TX)
T2
R63
240
DA02-F
TX
TX
U8
1
2
28
27
26
25
24
23
22
21
20
19
18
17
16
15
+3.3V
DVDD
CM0/CDTO
CM1/CDTI
OCKS1/CCLK
OCKS0/CSN
MCKO1
MCKO2
DAUX
CDTO
R64
150
+
C29
10u
C30
0.1u
1:1
DVSS
TVDD
V/TX
CDTI
CCLK
CSN
C31
10u
C32
0.1u
+
3
L5V
C33
4
V/TX
X1
11.2896MHz
5p
5
XTI
4112A_MCKO1
4112A_MCKO2
4529_SDTO
L5V
6
XTO
5p
C34
7
PDN
PDN
R65
LE3
U9A
1
2
8
R
BICK
4112A_BICK
4112A_SDTO
4112A_LRCK
74HCT14
R66
18k
1k
ERF
LE4
9
+3.3V
AVDD
AVSS
RX1
SDTO
C35
10u
L5V
+
R67
C36
0.1u
U9B
4
3
L4
10u
10
11
12
13
14
LRCK
JP2
74HCT14
PORT2
OPT/COAX
1k
FS96
LE5
6
5
4
3
2
1
OPT
6
GND
VCC
GND
OUT
ERF
R68
C37
0.1u
U9C
6
5
+
C38
10u
COAX
5
R69
470
TORX176
RX2/DIF0
RX3/DIF1
RX4/DIF2
FS96
74HCT14
1k
AUTO
LE6
+3.3V
P/SN
V/TX
JP3
R70
D1
U9D
8
J12
COAX
C39
0.1u
3
1
V
9
1S1588
2
AUTO
V/TX
74HCT14
TX
TX
1k
V
R71
75
AK4112A
R72
47k
T3
LP2950A
1
3
+3.3V
OUT IN
L5V
C40
47u
+
C41
0.1u
Title
AKD4628
Size
A3
Document Number
Rev
AK4112
B
Date:
Sheet
Thursday, September 26, 2002
of
2
3
5
4
3
2
1
5
4
3
2
1
L5V
L5V
1S1588
PORT3
5
6
4
3
2
1
D2
R74
10k
SW2
5
IN
R73
1k
D
C
B
A
1
2
3
4
5
6
12
11
10
9
D
C
B
A
VCC
IF
L5V
U9F
U9E
C42
0.1u
13
12
11
10
PDN
6
GND
H
L
TOTX176(ADC)
8
74HCT14
74HCT14
7
C43
0.1u
MDOE
SW1
PDN
RP1
U10
6
5
4
3
2
1
DFS_4529
V
1
2
24
23
22
21
20
19
18
17
16
15
14
13
V
V1
U1
DIF2
DIF1
DIF0
TXP
TRANS
RESETN
MCLK
SDTI
L5V
FS3
3
PDN
FS2
4
4112A_MCKO1
4529_SDTO
4112A_BICK
4112A_LRCK
DIF0
CKS1
DIF0
5
6
BICK
LRCK
TXN
7
DVSS
8
C48
0.1u
C49
47k
FS0/CSN DVDD
FS1/CDTI CKS1
FS2/CCLK CKS0
FS3/CDTO BLS
+
9
10u
CKS1
10
11
12
FS2
FS3
L5V
C1
ANS
AK4103
for NJM5532 x5
-12V
R76 100
R78 100
R79 100
R80 100
L5
4112A_MCKO1
4112A_BICK
4112A_LRCK
PORT4
R77 100
2
1
-12V
MCKO1
BICK
LRCK
SDTO
SDTI4
MCKO2
GND
SDTI1
SDTI2
SDTI3
1
2
3
4
5
10
9
4112A_MCKO2
C50
47u
(short)
+
+
+
+
+
+
8
SDTI1
SDTI2
SDTI3
SDTI4
7
6
AC3
C51
0.1u
C52
10u
C53
0.1u
C54
10u
C55
C56
10u
C57
0.1u
C58
10u
C59
0.1u
C60
10u
0.1u
DSP
DSP
DSP
DSP
JP4
SDTI2
JP5
SDTI3
+12V for NJM5532 x5
L6
JP6
SDTI4
JP7
SDTI1
4112A
4112A
2
1
+12V
4112A
4112A
+
(short)
C61
47u
+
+
+
+
+
R81 100
4112A_SDTO
C62
0.1u
C63
10u
C64
0.1u
C65
10u
C66
0.1u
C67
10u
C68
0.1u
C69
10u
C70
0.1u
C71
10u
for 74HCT14,
74HCT541
L5V
C72
0.1u
C73
0.1u
Title
Size
AKD4628
Document Number
Rev
A3
Interface
B
Date:
Sheet
of
Thursday, September 26, 2002
3
3
5
4
3
2
1
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