AKM AKD4569 User manual

ASAHI KASEI [AKD4569]
<KM074000>2004/02
- 1-
GENERAL DESCRIPTION
The AKD4569 is an evaluation board for the AK4569, the Audio CODEC with IPGA and HP-amp. The
AKD4569 can evaluate A/D and D/A in addition to A/D to D/A loopback mode. The AKD4569 also has the
digital audio interface and can achieve the interface with digital audio systems via opt-connector.
nOrdering guide
AKD4569 --- Evaluation board for AK4569
(Cable for connecting with printer port of IBM-AT compatible PC and control
software are packed with this. This control software does not support Windows NT.)
FUNCTION
oCompatible with 2 types of interface
- DIR(AK4116)/DIT(AK4114) with optical input/output
- Direct interface with AKM’s A/D,D/A converter evaluation boards by 10pin header
o10pin header for serial control interface
AINL
AINR
LIN/RIN/MIN
MOUT
HPL
Headphone
HPR
GND
AK4569
AK4114(DIT)
10pin Header
10pin Header
Control Data
EXTCLK
Opt In
Opt Out
DSP
+3V
AK4116(DIR)
Figure 1. AKD4569 Block Diagram
* Circuit diagram and PCB layout are attached at the end of this manual.
Evaluation board Rev.A for AK4569
AKD4569

ASAHI KASEI [AKD4569]
<KM074000>2004/02
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PORT1
uP-I/F
1
2
910
CSN
CCLK
CDTI
CDTO
GND
GND
GND
GND
GND NC
nOperation sequence
1) Set up the power supply lines.
Name Color Voltage Contents Attention
+5V Red 5V Regulator JP15 should be shorted and HVDD jack should be
open when the regulator is used.
(Default: JP15 is open.)
HVDD Orange 3V AK4569 Headphone amp JP15 should be open when the regulator is NOT used.
AVDD Orange 3V AK4569 Analog JP4 should be shorted and AVDD jack should be open
when AVDD is supplied from HVDD.
(Default: JP4 is shorted.)
DVDD Orange 3V AK4569 Digital JP14 should be shorted and DVDD jack should be
open when DVDD is supplied from HVDD.
(Default: JP14 is shorted.)
VD Orange 3V Logic Parts JP13 should be shorted and VD jack should be open
when VD is common with DVDD.
(Default: JP13 is shorted.)
AGND Black 0V Analog ground AGND jack should be always supplied.
DGND Black 0V Digital ground DGND jack can be open if JP1 is shorted.
(Default: JP1 is shorted.)
Table 1. Set up of power supply lines
Each supply line should be distributed from the power supply unit.
2) Set-up the evaluation modes, jumper pins and DIP switches. (See the followings.)
3) Power on.
The AK4569 should be reset once bringing SW1(4569_PDN) “L”upon power-up.
4) Serial control
The AK4569 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 AKD4569.
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. Pin Layout of PORT1

ASAHI KASEI [AKD4569]
<KM074000>2004/02
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nEvaluation mode
Applicable evaluation modes
(1) Loopback mode
(2) Evaluation of A/D part
(3) Evaluation of D/A part (Default)
(4) All interface signals including master clock are fed externally.
Analog Output
(1),(2),(4)
(1),(3),(4)
PC
Printer Port
(2)
(3)
DSP
(4)
Digital Output
Digital Input
Analog Input
Power Supply
Unit
3V
J1
AINL J2 AINR
J3
L/R/MIN TOTX141
PORT4
TORX141
PORT2
DSP
PORT3
0V
µP I/F
PORT1
Analog Input
(3),(4)
VD DGND AGNDDVDD HVDD REG
AVDD J4
MOUT
J5
HPL
J6
HP
J7
HPR
Figure 3. Connection diagram for each evaluation mode
<Setup of jumper pins, signal I/O connector and DIR for each evaluation mode>
Mode (1) Mode (2) Mode (3) Mode (4)
JP6 (MCLK) short short short open
JP7 (SDTI) ADC side Don’t care DIR side open
JP8 (BICK) short short short open
JP9 (LRCK) short short short open
Signal input J1(AINL), J2(AINR) J1(AINL), J2(AINR) PORT2(TORX141),
J3(LIN/RIN/MIN) PORT3(DSP)
Signal output J4(MOUT), J5(HPL),
J7(HPR), J6(HP) PORT4(TOTX141) J4(MOUT), J5(HPL), J7(HPR), J6(HP) J4(MOUT), J5(HPL), J7(HPR), J6(HP)
AK4116(DIR)
Clock mode
(CM1-0 bit)
X’tal mode
(CM1-0 = “01”)X’tal mode (CM1-0 = “01”)PLL mode (CM1-0 = “00”)X’tal mode (CM1-0 = “01”)
Table 2. Setup of jumper pins etc. for each evaluation mode

ASAHI KASEI [AKD4569]
<KM074000>2004/02
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<Details for each evaluation mode>
(1) Loopback mode
MCLK, BICK and LRCK are fed from on-board DIR (AK4116). The clock source can be selected from on-board
X’tal oscillator or external master clock through a BNC connector (J8: EXTCLK).
CM1-0 bit (Addr=01H) of AK4116 should be set to “01”by the control software “akd4116-1.exe”packed with
AKD4569.
(2) Evaluation of ADC
AK4114 (DIT) generates audio bi-phase signal from received data and which is output through optical connector
(PORT4: TOTX141). It is possible to connect AKM’s D/A converter evaluation boards or the digital-amplifier
which equips DIR input. SW3 is used to set the interface format and clock mode of AK4114 (see DIP-SW set-up).
CM1-0 bit (Addr=01H) of AK4116 should be set to “01”by the control software “akd4116-1.exe”packed with
AKD4569.
(3) Evaluation of DAC (Default)
On-board DIR (AK4116) generates MCLK, BICK, LRCK and SDATA from the received data through optical
connector (TORX141). Used for the evaluation using CD test disk. Nothing should be connected to
PORT3(DSP).
(4) Feeding all signals externally
AK4569 can be evaluated by connecting DSP to PORT3(DSP).
nOther jumper pins setup
[JP2] (AINL): ADC Lch input select (Default: AINL1)
[JP3] (AINR): ADC Rch input select (Default: AINR1)
[JP5] (LIN/RIN/MIN): External analog input select (Default: MIN)
[JP10] (HPL): Headphone Lch output
Short: Output from J5(BNC) (Default)
Open: Output from J6(Headphone jack)
[JP11] (HPR): Headphone Rch output
Short: Output from J7(BNC) (Default)
Open: Output from J6(Headphone jack)
[JP12] (EXTCLK): Clock source
Short: External clock is input via J8(EXTCLK). On-chip X’tal (X1) should be removed.
Open: On-chip X’tal (X1) is used. (Default)

ASAHI KASEI [AKD4569]
<KM074000>2004/02
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nDIP-SW set-up (setup for AK4114)
No. Name Default Contents
1DIF0 OFF AK4114 interface format (See Table 4.)
2OCKS1 OFF AK4114 clock mode (See Table 5.)
3
4
5NC OFF Don’t care
Table 3. SW3 setup (1=ON, 0=OFF)
Format No.1
(DIF0)
24bit, Left jutified 0Default
I2S1
Table 4. AK4114 interface format setup (1=ON, 0=OFF)
Clock mode No.2
(OCKS1)
256fs 0Default
512fs 1
Table 5. AK4114 clock mode setup (1=ON, 0=OFF)
nThe function of the toggle SW
[SW1](4569_PDN): Resets the AK4569. Keep “H”during normal operation.
[SW2](4116_PDN): Resets the AK4116(DIR). Keep “H”during normal operation.
[SW3](4114_PDN): Resets the AK4114(DIT). Keep “H”during normal operation.
nThe indication content for LED
LED turns on when each output goes “H”.
[LE1] (INT1): INT1 of AK4116(DIR)
[LE2] (INT0): INT0 of AK4116(DIR)

ASAHI KASEI [AKD4569]
<KM074000>2004/02
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AK4569 Control Program operation manual
nSet-up of evaluation board and control software
1.Set up the AKD4569 according to above mentioned setting.
2.Connect IBM-AT compatible PC with AKD4569 by 10-line type flat cable (packed with AKD4569). Take care of
the direction of 10pin header. (Please install the driver in the floppy-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 labeled “AK4569 Evaluation Kit”into the CD-ROM drive.
4.Access the CD-ROM drive and double-click the icon of “akd4569.exe”to set up the control program.
5.Then please evaluate according to the followings.
nOperation 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.
nExplanation of each buttons
1. [Port Setup] : set up the printer port.
2. [Write default] : initialize the register of AK4569.
3. [Function1] : Dialog to write data by keyboard operation.
4. [Function2] : Dialog to evaluate IPGA and ATTL/ATTR/ATTM.
5. [Write] : write data to each register.

ASAHI KASEI [AKD4569]
<KM074000>2004/02
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nExplanation 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 AK4569, 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: Data is written to AK4569 by this interval.
Step Box: 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 AK4569, 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 AK4569, click “OK”button. If not, click “Cancel”button.
nIndication 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.
nAttention 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.

ASAHI KASEI [AKD4569]
<KM074000>2004/02
- 8-
AKD4116 Control Program operation manual
nSet-up of evaluation board and control software
1. Set up the AKD4569 according to above mentioned setting.
2. Connect IBM-AT compatible PC with AKD4569 by 10-line type flat cable (packed with AKD4569). Take care of
the direction of 10pin header. (Please install the driver in the floppy-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 labeled “AK4569 Evaluation Kit”into the CD-ROM drive.
4. Access the CD-ROM drive and double-clickthe icon of “akd4116_1.exe”and “akd4116_2.exe”to set upthe control
program.
5. Then please evaluate according to the follows.
nOperation 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.
nExplanation of each buttons
1. [Port Setup] : set up the printer port.
2. [Write default] : initialize the register of AK4116.
3. [All read] : read all registers.
4. [Read] : read data from each register.
5. [Write] : write data to each register.
If you want to write the input data to AK4116, click “OK”button. If not, click “Cancel”button.
nIndication 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.
End.

ASAHI KASEI [AKD4569]
<KM074000>2004/02
- 9-
MEASUREMENT RESULTS
1) ADC part
[Measurement condition]
•Measurement unit : Audio Precision System two Cascade
•MCLK : 256fs
•BICK : 64fs
•fs : 48kHz
•BW : 10Hz∼20kHz
•Bit : 20bit
•Power Supply : AVDD=DVDD=HVDD=3V
•Interface : DIT
•Temperature : Room
Parameter Input signal Measurement filter Results
S/(N+D) 1kHz, -1dB 20kLPF 85.1dB
DR 1kHz, -60dB 20kLPF, A-weighted 88.6dB
S/N No signal 20kLPF, A-weighted 88.6dB
2) DAC part
[Measurement condition]
•Measurement unit : Audio Precision System two Cascade
•MCLK : 256fs
•BICK : 64fs
•fs : 48kHz
•BW : 10Hz∼20kHz
•Bit : 20bit
•Power Supply : AVDD=DVDD=HVDD=3V
•Interface : DIR
•Temperature : Room
Parameter Input signal Measurement filter HP-amp MOUT
S/(N+D) 1kHz, 0dB 20kLPF 69.5dB 85.7dB
DR 1kHz, -60dB 22kLPF, A-weighted 90.8dB 90.3dB
S/N “0”data 22kLPF, A-weighted 91.2dB 90.9dB

ASAHI KASEI [AKD4569]
<KM074000>2004/02
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nPlots
(1) ADC part
[Measurement condition]
•Measurement unit : Audio Precision, System two, Cascade
•MCLK : 256fs
•BICK : 64fs
•fs : 48kHz
•BW : 10Hz∼20kHz
•Bit : 20bit
•Power Supply : AVDD=DVDD=HVDD=3V
•Interface : DIT
•Temperature : Room
Figure 4.FFT (1kHz, -1dBFS input)
Figure 5.FFT (1kHz, -60dBFS input)
Figure 6.FFT (Noise floor)
Figure 7.THD+N vs Input Level (fin=1kHz)
Figure 8.THD+N vs fin (Input Level=-1dBFS)
Figure 9.Linearity (fin=1kHz)
Figure 10.Frequency Response (Input Level=-1dBFS)
Figure 11.Crosstalk (Input Level=-1dBFS)

ASAHI KASEI [AKD4569]
<KM074000>2004/02
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(ADC)
AKM AK4569 ADC FFT (fs=44.1kHz, fin=1kHz, -1dBr Input)
FFT point=16384, Avg=8, window=Equiripple
last.at2c
Color Line Style Thick Data Axis
Red Solid 3Fft.Ch.1 Ampl Left
Blue Solid 3Fft.Ch.2 Ampl Left
20 20k50 100 200 500 1k 2k 5k 10k
Hz
-180
+0
-160
-140
-120
-100
-80
-60
-40
-20
d
B
F
S
Figure 4. FFT (1kHz, -1dBFS input)
FFT points=16384, Avg=8, Window=Equiripple
AKM AK4569 ADC FFT (fs=44.1kHz, fin=1kHz, -60dBr
Input)
FFT point=16384, Avg=8, window=Equiripple
last.at2c
Color Line Style Thick Data Axis
Red Solid 3Fft.Ch.1 Ampl Left
Blue Solid 3Fft.Ch.2 Ampl Left
20 20k50 100 200 500 1k 2k 5k 10k
Hz
-180
+0
-160
-140
-120
-100
-80
-60
-40
-20
d
B
F
S
Figure 5. FFT (1kHz, -60dBFS input)
FFT points=16384, Avg=8, Window=Equiripple

ASAHI KASEI [AKD4569]
<KM074000>2004/02
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(ADC)
AKM AK4569 ADC FFT (No signal Input)
FFT point=16384, Avg=8, window=Equiripple
last.at2c
Color Line Style Thick Data Axis
Red Solid 3Fft.Ch.1 Ampl Left
Blue Solid 3Fft.Ch.2 Ampl Left
20 20k50 100 200 500 1k 2k 5k 10k
Hz
-180
+0
-160
-140
-120
-100
-80
-60
-40
-20
d
B
F
S
Figure 6. FFT (Noise floor)
FFT points=16384, Avg=8, Window=Equiripple

ASAHI KASEI [AKD4569]
<KM074000>2004/02
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(ADC)
AKM AK4569 DAC THD+N vs.Input Level (fs=44.1kHz, fin=1kHz)
last.at2c
Color Line Style Thick Data Axis
Red Solid 3DSP Anlr.THD+N Ampl A Left
Blue Solid 3DSP Anlr.THD+N Ampl B Left
-100
-60
-97.5
-95
-92.5
-90
-87.5
-85
-82.5
-80
-77.5
-75
-72.5
-70
-67.5
-65
-62.5
d
B
F
S
-120 -10-110 -100 -90 -80 -70 -60 -50 -40 -30 -20
dBr
Figure 7. THD+N vs Input Level (fin=1kHz)
AKM AK4569 ADC THD+N vs. fin (fs=44.1kHz, -1dBFS Input)
last.at2c
Color Line Style Thick Data Axis
Red Solid 3DSP Anlr.THD+N Ampl A Left
Blue Solid 3DSP Anlr.THD+N Ampl B Left
-100
-60
-95
-90
-85
-80
-75
-70
-65
d
B
F
S
20 20k50 100 200 500 1k 2k 5k 10k
Hz
Figure 8. THD+N vs fin (Input Level=-1dBFS)

ASAHI KASEI [AKD4569]
<KM074000>2004/02
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(ADC)
AKM AK4569 DAC Linearity (fs=44.1kHz, fin=1kHz)
last.at2c
Color Line Style Thick Data Axis
Red Solid 3DSP Anlr.Bandpass A Left
Blue Solid 3DSP Anlr.Bandpass B Left
-120
+0
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
-120 +0-110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10
dBr
Figure 9. Linearity (fin=1kHz)
AKM AK4569 ADC Frequency Response (fs=48kHz, -1dBFS Input)
last.at2c
Color Line Style Thick Data Axis
Red Solid 3DSP Anlr.Ampl A Left
Blue Solid 3DSP Anlr.Ampl B Left
-2.4
+0
-2.2
-2
-1.8
-1.6
-1.4
-1.2
-1
-0.8
-0.6
-0.4
-0.2
d
B
F
S
20 20k50 100 200 500 1k 2k 5k 10k
Hz
Figure 10. Frequency Response (Input Level=-1dBFS)

ASAHI KASEI [AKD4569]
<KM074000>2004/02
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(ADC)
AKM AK4569 ADC Crosstalk (fs=44.1kHz, fin=1kHz, -1dBFS
Input)
Upper@1kHz;Lch--->Rch, Lower@1kHz;Rch--->Lch
last.at2c
Color Line Style Thick Data Axis
Red Solid 3DSP Anlr.Crosstalk A Left
Magenta Solid 3DSP Anlr.Crosstalk B Left
-130
-70
-125
-120
-115
-110
-105
-100
-95
-90
-85
-80
-75
d
B
20 20k50 100 200 500 1k 2k 5k 10k
Hz
Figure 11. Crosstalk (Input Level=-1dBFS)

ASAHI KASEI [AKD4569]
<KM074000>2004/02
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(2) DAC part (HPL, HPR pins)
[Measurement condition]
•Measurement unit : Audio Precision, System two, Cascade
•MCLK : 256fs
•BICK : 64fs
•fs : 48kHz
•BW : 10Hz∼20kHz
•Bit : 20bit
•Power Supply : AVDD=DVDD=HVDD=3V
•Interface : DIR
•Temperature : Room
Figure 12.FFT (1kHz, 0dBFS input)
Figure 13.FFT (1kHz, -60dBFS input)
Figure 14.FFT (Noise floor)
Figure 15.FFT (Outband noise)
Figure 16.THD+N vs Input Level (fin=1kHz)
Figure 17.THD+N vs fin (Input Level=0dBFS)
Figure 18.Linearity (fin=1kHz)
Figure 19.Frequency Response (Input Level=0dBFS)
Figure 20.Crosstalk (Input Level=0dBFS)

ASAHI KASEI [AKD4569]
<KM074000>2004/02
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(DAC)
AKM AK4569 DAC FFT (fs=44.1kHz, fin=1kHz, 0dBFS Input)
FFT point=16384, Avg=8, window=Equiripple
last.at2c
Color Line Style Thick Data Axis
Red Solid 3Fft.Ch.1 Ampl Left
Blue Solid 3Fft.Ch.2 Ampl Left
-160
+0
-140
-120
-100
-80
-60
-40
-20
d
B
r
A
20 20k50 100 200 500 1k 2k 5k 10k
Hz
Figure 12. FFT (1kHz, 0dBFS input)
FFT points=16384, Avg=8, Window=Equiripple
AKM AK4569 DAC FFT (fs=44.1kHz, fin=1kHz, -60dBFS Input)
FFT point=16384, Avg=8, window=Equiripple
last.at2c
Color Line Style Thick Data Axis
Red Solid 3Fft.Ch.1 Ampl Left
Blue Solid 3Fft.Ch.2 Ampl Left
-160
+0
-140
-120
-100
-80
-60
-40
-20
d
B
r
A
20 20k50 100 200 500 1k 2k 5k 10k
Hz
Figure 13. FFT (1kHz, -60dBFS input)
FFT points=16384, Avg=8, Window=Equiripple

ASAHI KASEI [AKD4569]
<KM074000>2004/02
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(DAC)
AKM AK4569 DAC FFT (No data Input)
FFT point=16384, Avg=8, window=Equiripple
last.at2c
Color Line Style Thick Data Axis
Red Solid 3Fft.Ch.1 Ampl Left
Blue Solid 3Fft.Ch.2 Ampl Left
-160
+0
-140
-120
-100
-80
-60
-40
-20
d
B
r
A
20 20k50 100 200 500 1k 2k 5k 10k
Hz
Figure 14. FFT (Noise floor)
FFT points=16384, Avg=8, Window=Equiripple
AKM AK4569 DAC FFT (Out-band-noise)
FFT point=16384, Avg=8, window=Equiripple
last.at2c
Color Line Style Thick Data Axis
Red Solid 3Fft.Ch.1 Ampl Left
Blue Solid 3Fft.Ch.2 Ampl Left
-160
+0
-140
-120
-100
-80
-60
-40
-20
d
B
r
A
90 100k200 500 1k 2k 5k 10k 20k 50k
Hz
Figure 15. FFT (Outband noise)
FFT points=16384, Avg=8, Window=Equiripple

ASAHI KASEI [AKD4569]
<KM074000>2004/02
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(DAC)
AKM AK4569 DAC THD+N vs. Input Lever (fs=44.1kHz, fin=1kHz)
last.at2c
Color Line Style Thick Data Axis
Red Solid 3Anlr.THD+N Ampl Left
Blue Solid 3Anlr.THD+N Ampl Left
-100
-40
-95
-90
-85
-80
-75
-70
-65
-60
-55
-50
-45
d
B
r
A
-140 +0-130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10
dBFS
Figure 16. THD+N vs Input Level (fin=1kHz)
AKM
AK4569 DAC THD+N vs. Input Frequency (fs=44.1kHz,fin=1kHz, Input Level=0dBFS)
last.at2c
Color Line Style Thick Data Axis
Red Solid 3Anlr.THD+N Ampl Left
Blue Solid 3Anlr.THD+N Ampl Left
-100
-40
-95
-90
-85
-80
-75
-70
-65
-60
-55
-50
-45
d
B
r
A
20 20k50 100 200 500 1k 2k 5k 10k
Hz
Figure 17. THD+N vs fin (Input Level=0dBFS)

ASAHI KASEI [AKD4569]
<KM074000>2004/02
- 20 -
(DAC)
AKM AK4569 DAC Linearity (fs=44.1kHz,fin=1kHz)
last.at2c
Color Line Style Thick Data Axis
Red Solid 3Anlr.Bandpass Left
Blue Solid 3Anlr.Bandpass Left
-120
+0
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
r
A
-120 +0-110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10
dBFS
Figure 18. Linearity (fin=1kHz)
AKM AK4569 DAC Frequency Response (fs=44.1kHz,Input Level=0dB)
last.at2c
Color Line Style Thick Data Axis
Red Solid 3Anlr.Ampl Left
Blue Solid 3Anlr.Ampl Left
-0.5
+0.5
-0.4
-0.3
-0.2
-0.1
+0
+0.1
+0.2
+0.3
+0.4
d
B
r
A
2k 20k4k 6k 8k 10k 12k 14k 16k 18k
Hz
Figure 19. Frequency Response (Input Level=0dBFS)