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ASAHI KASEI
AKD4552-A is an evaluation board for the digital audio 24bit A/D and D/A converter, AK4552. The
AKD4552-A 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
AKD4552-A has the interface with AKM's ADC evaluation boards. Therefore, it's easy to evaluate the D/A
section. The AKD4552-A also has the digital audio interface and can achieve the interface with digital
audio systems via opt-connector.
Ordering guide
AKD4552-A
---
• DIT/DIR with optical input/output
• BNC connector for an external clock input
LIN
RIN
LOUT
ROUT
* Circuit diagram and PCB layout are attached at the end of this manual.
<KM080600>
Evaluation board Rev.0 for AK4552
GENERAL DESCRIPTION
Evaluation board for AK4552
FUNCTION
2.4 ~ 4.0V GND
AK4552
Clock
Generator
Figure 1. AKD4552-A Block Diagram
- 1 -
AK4112B
Opt In
(DIR)
AK4103A
Opt Out
(DIT)
A/D, D/A Data
10pin Header
[AKD4552-A]
AKD4552-A
2005/10
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Summary of Contents for AKM AKD4552-A
- Page 1 Evaluation board Rev.0 for AK4552 GENERAL DESCRIPTION AKD4552-A is an evaluation board for the digital audio 24bit A/D and D/A converter, AK4552. The AKD4552-A 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 AKD4552-A has the interface with AKM’s ADC evaluation boards.
- Page 2 R6(R4) Figure 2. Input buffer circuit on board * AKM assumes no responsibility for the trouble when using the circuit examples. Analog Output Circuit The AK4552 includes a combination of switched-capacitor filter (SCF) and continuous-time filter (CTF), so any external filters are not required.
- Page 3 PORT2 (DIT) and X2 (X’tal) is used. DIT generates audio bi-phase signal from received data and which is output through optical connector (TOTX176). It is possible to connect AKM’s D/A converter evaluation boards on the digital-amplifier which equips DIR input. Nothing should be connected to PORT1 (DIR), PORT3 (ROM).
- Page 4 ASAHI KASEI [AKD4552-A] (2) Evaluation of D/A using DIR (Optical Link) PORT1 (DIR) is used. DIR generates MCLK, BCLK, LRCK and SDATA from the received data through optical connector (TORX176). Used for the evaluation using CD test disk. Nothing should be connected to PORT3 (ROM).
- Page 5 ASAHI KASEI [AKD4552-A] 2-4) 1/2 decimation of DAC (MCLK=128fs) Input fs example for PORT1 : fs = 64kHz, 88.2kHz, 96kHz JP10 JP11 JP12 MCKO SPEED MCLK MODE BCFS LRFS (3) Evaluation of loopback mode (default) Using U4 (AK4112B) and X1 (X’tal). Nothing should be connected to PORT1 (DIR), PORT3 (ROM). Set up “H”...
- Page 6 It is possible to make evaluation in the form of analog inputs and analog outputs by interfacing with various AKM’s A/D evaluation boards with PORT3 (ROM). Nothing should be connected to PORT1 (DIR). In case of using external clock through a BNC connector (J5), select EXT on JP11 (CLK) and short JP8 (XTE) and open JP13 (EXT).
- Page 7 (5) Evaluation of A/D using D/A converted data It is possible to make evaluation in the form of analog inputs and analog outputs by interfacing with various AKM’s D/A evaluation boards with PORT3 (ROM). Nothing should be connected to PORT1 (DIR). JP13...
- Page 8 ASAHI KASEI [AKD4552-A] (6) All interface signals including master clock are fed externally. Under the following set-up, all external signals needed for the AK4552 to operate could be fed through PORT3 (ROM). In case of interfacing external sources to D/A converter, JP6 (SDTI) should be open. And in case of using A/D data to externally, JP6 (SDTI) is set ADC side.
- Page 9 ASAHI KASEI [AKD4552-A] Other jumper pins set up [JP1] (GND): Analog ground and digital ground open: separated short: common (The connector “DGND” can be open.) <default> [JP5] (SDTO): SDTO of AK4552 Always open. It is possible to short for evaluation mode 6.
-
Page 10: Measurement Results
ASAHI KASEI [AKD4552-A] MEASUREMENT RESULTS [Measurement condition] • Measurement unit : Audio Precision, System two Cascade • MCLK : 256fs • BCLK : 64fs • fs : 32kHz, 44.1kHz, 48kHz, 96kHz • Bit : 24bit • Band width : ADC : 10Hz ∼ 20kHz (Normal Speed), 10Hz ∼ 48kHz (Double Speed) •... - Page 11 ASAHI KASEI [AKD4552-A] 1. ADC (Normal Speed) AK4552 AD C THD+N vs. Input Level VA=VD =3.0V, fs=44.1kHz, fin=1kHz -100 -120 -110 -100 dB r Figure 1. THD+N vs. Input Level AK4552 AD C THD+N vs. Input Frequency VA=VD=3.0V, fs=44.1kHz, Input=-0.5dBr -100 Figure 2.
- Page 12 ASAHI KASEI [AKD4552-A] AK4552 ADC Linearity VA=VD =3.0V, fs=44.1kHz, fin=1kHz -100 -110 -120 -120 -110 -100 dB r Figure 3. Linearity AK4552 ADC Frequency Response VA=VD=3.0V, fs=44.1kHz, Input=-0.5dBr -0.2 -0.4 -0.6 -0.8 -1.2 -1.4 -1.6 -1.8 Figure 4. Frequency Response <KM080600>...
- Page 13 ASAHI KASEI [AKD4552-A] AK4552 AD C C rosstalk VA=VD=3.0V, fs=44.1kHz, Input=-0.5dBr -100 -105 -110 -115 -120 -125 -130 -135 -140 Figure 5. Crosstalk AK4552 ADC FFT Plot VA=VD=3.0V, fs=44.1kHz, Input=-0.5dBr, fin=1kHz -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 6.
- Page 14 ASAHI KASEI [AKD4552-A] AK4552 ADC FFT Plot VA=VD=3.0V, fs=44.1kHz, Input=-60dBr, fin=1kHz -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 7. FFT Plot AK4552 ADC FFT Plot VA=VD=3.0V, fs=44.1kHz, fin=None -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 8.
- Page 15 ASAHI KASEI [AKD4552-A] 2. DAC (Normal Speed) AK4552 D AC THD+N vs. Input Level VA=VD =3.0V, fs=44.1kHz, fin=1kHz -100 -105 -110 -115 -120 -120 -110 -100 dB FS Figure 1. THD+N vs. Input Level AK4552 D AC THD+N vs. Input Frequency VA=VD =3.0V, fs=44.1kHz, Input=0dBFS...
- Page 16 ASAHI KASEI [AKD4552-A] AK4552 D AC Linearity VA=VD=3.0V, fs=44.1kHz, fin=1kHz -100 -110 -120 -120 -110 -100 dB FS Figure 3. Linearity AK4552 DAC Frequency Response VA=VD =3.0V, fs=44.1kHz, Input=0dBFS +0.5 +0.4 +0.3 +0.2 +0.1 -0.1 -0.2 -0.3 -0.4 -0.5 Figure 4. Frequency Response <KM080600>...
- Page 17 ASAHI KASEI [AKD4552-A] AK4552 D AC C rosstalk VA=VD =3.0V, fs=44.1kHz, Input=0dBFS -100 -105 -110 -115 -120 -125 -130 Figure 5. Crosstalk AK4552 DAC FFT Plot VA=VD=3.0V, fs=44.1kHz, Input=0dBFS, fin=1kHz -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 6. FFT Plot <KM080600>...
- Page 18 ASAHI KASEI [AKD4552-A] AK4552 DAC FFT Plot VA=VD=3.0V, fs=44.1kHz, Input=-60dBFS, fin=1kHz -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 7. FFT Plot AK4552 DAC FFT Plot VA=VD=3.0V, fs=44.1kHz, fin=None -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 8.
- Page 19 ASAHI KASEI [AKD4552-A] 3. ADC (Double Speed) AK4552 AD C THD+N vs. Input Level VA=VD=3.0V, fs=96kHz, fin=1kHz -100 -120 -110 -100 dB r Figure 1. THD+N vs. Input Level AK4552 AD C THD+N vs. Input Frequency VA=VD =3.0V, fs=96kHz, Input=-0.5dBr -100 Figure 2.
- Page 20 ASAHI KASEI [AKD4552-A] AK4552 ADC Linearity VA=VD=3.0V, fs=96kHz, fin=1kHz -100 -110 -120 -120 -110 -100 dB r Figure 3. Linearity AK4552 ADC Frequency Response VA=VD =3.0V, fs=96kHz, Input=-0.5dBr -0.2 -0.4 -0.6 -0.8 -1.2 -1.4 -1.6 -1.8 Figure 4. Frequency Response <KM080600>...
- Page 21 ASAHI KASEI [AKD4552-A] AK4552 AD C C rosstalk VA=VD =3.0V, fs=96kHz, Input=-0.5dBr -92.5 -97.5 -100 -102.5 -105 -107.5 -110 -112.5 -115 -117.5 -120 -122.5 -125 -127.5 -130 Figure 5. Crosstalk AK4552 ADC FFT Plot VA=VD =3.0V, fs=96kHz, Input=-0.5dBr, fin=1kHz -100...
- Page 22 ASAHI KASEI [AKD4552-A] AK4552 ADC FFT Plot VA=VD=3.0V, fs=96kHz, Input=-60dBr, fin=1kHz -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 7. FFT Plot AK4552 ADC FFT Plot VA=VD=3.0V, fs=96kHz, fin=None -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 8.
- Page 23 ASAHI KASEI [AKD4552-A] 4. DAC (Double Speed) AK4552 D AC THD+N vs. Input Level VA=VD=3.0V, fs=96kHz, fin=1kHz -100 -105 -110 -115 -120 -120 -110 -100 dB FS Figure 1. THD+N vs. Input Level AK4552 D AC THD+N vs. Input Frequency VA=VD=3.0V, fs=96kHz, Input=0dBFS...
- Page 24 ASAHI KASEI [AKD4552-A] AK4552 DAC Linearity VA=VD=3.0V, fs=96kHz, fin=1kHz -100 -110 -120 -120 -110 -100 dB FS Figure 3. Linearity AK4552 DAC Frequency Response VA=VD=3.0V, fs=96kHz, Input=0dBFS +0.5 +0.4 +0.3 +0.2 +0.1 -0.1 -0.2 -0.3 -0.4 -0.5 2.5k 7.5k 12.5k 17.5k...
- Page 25 ASAHI KASEI [AKD4552-A] AK4552 D AC C rosstalk VA=VD=3.0V, fs=96kHz, Input=0dBFS -100 -105 -110 -115 -120 -125 -130 Figure 5. Crosstalk AK4552 DAC FFT Plot VA=VD =3.0V, fs=96kHz, Input=0dBFS, fin=1kHz -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 6. FFT Plot <KM080600>...
- Page 26 ASAHI KASEI [AKD4552-A] AK4552 DAC FFT Plot VA=VD =3.0V, fs=96kHz, Input=-60dBFS, fin=1kHz -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 7. FFT Plot AK4552 DAC FFT Plot VA=VD=3.0V, fs=96kHz, fin=None -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 8.
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Page 27: Important Notice
• 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... - Page 28 AK4552 0.1u 0.1u 74LVC541 74LVC541 1S1588 1S1588 74HC14 74HC14 74HC14 74HC14 0.1u 0.1u Title Title Title AKD4552-A AKD4552-A AKD4552-A Size Size Size Document Number Document Number Document Number AK4552 AK4552 AK4552 Date: Date: Date: Monday , September 26 , 2005...
- Page 29 PORT1 PORT1 RX3/DIF1 + C33 + C33 0.1u 0.1u RX4/DIF2 AUTO AK4112B AK4112B Title Title Title AKD4552-A AKD4552-A AKD4552-A Size Size Size Document Number Document Number Document Number Date: Date: Date: Monday, September 26, 2005 Monday, September 26, 2005 Monday, September 26, 2005...
- Page 30 X_LRCK 74HCU04 74HCU04 JP12 JP12 LRFS LRFS 74HC4040 74HC4040 JP13 JP13 Title Title Title AKD4552-A AKD4552-A AKD4552-A Size Size Size Document Number Document Number Document Number Date: Date: Date: Monday, September 26, 2005 Monday, September 26, 2005 Monday, September 26, 2005...
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