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Asahi KASEI AKD4382A-SB Manual

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The AKD4382A-SB is an evaluation board for AK4382A, which is 192kHz sampling 24Bit ΔΣ DAC. The
AKD4382A-SB includes a LPF which can add differential analog outputs from the AK4382A and also has a
digital interface. Therefore, it is easy to evaluate the AK4382A.
Ordering Guide
AKD4382A-SB --- Evaluation board for AK4382A
On-board Analog output buffer circuit
On-board digital audio interface. (AK4113)
+15V
Reg
DIR
COAX In
Opt In
PORT1
EXT
PORT2
Control
Data
<KM089400>
General Description
Function
+3.3V
+5V
Reg
AK4113
AK4382A
Figure 1. Block diagram
* Circuit diagram are attached at the end of this manual.
COAX is recommended for an evaluation of the Sound quality.
AKD4382A-SB
AK4382A Evaluation board Rev.0
AGND -15V
2nd Order
1
[AKD4382A-SB]
Lch
LPF
Rch
2007/06

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Summary of Contents for Asahi KASEI AKD4382A-SB

  • Page 1 The AKD4382A-SB is an evaluation board for AK4382A, which is 192kHz sampling 24Bit ΔΣ DAC. The AKD4382A-SB includes a LPF which can add differential analog outputs from the AK4382A and also has a digital interface. Therefore, it is easy to evaluate the AK4382A.

  • Page 2: Operation Sequence

    [AKD4382A-SB] Operation sequence 1) Set up the power supply lines. (See “Other jumpers set-up”.) Name Color Voltage Comments Attention This jack should be always connected to power +15V +12∼+15V For regulator and op-amps. supply. This jack should be always connected to power...

  • Page 3: Evaluation Mode

    [AKD4382A-SB] Evaluation mode 1. DIR (COAX) (default) It is possible to evaluate the AK4382A 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.
  • Page 4 [AKD4382A-SB] SW1 setting [SW1](PDN): Reset of AK4382A. Select “H” during operation External Analog Filter Circuit The 2nd order LPF (fc=93.2kHz, Q=0.712) which adds differential outputs of the AK4382A 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.
  • Page 5 Windows NT.) 3. Insert the CD-ROM labeled “AKD4382A-SB Evaluation Kit” into the CD-ROM drive. 4. Access the CD-ROM drive and double-click the icon of “AKD4382A-SB.exe” to set up the control program. 5. Then please evaluate according to the follows. Operation flow Keep the following flow.
  • Page 6 [AKD4382A-SB] Explanation of each dialog : Dialog to write data by mouse operation 1. [Write Dialog] 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”...

  • Page 7: Save] And [Open]

    [AKD4382A-SB] 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”.
  • Page 8 [AKD4382A-SB] 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.
  • Page 9 [AKD4382A-SB] 6. [Function4 Dialog] The sequence that is created on [Function3] can be assigned to buttons and executed. When [F4] button is clicked, as shown in opens. window Figure 6 Figure 6. [F4] window <KM089400> 2007/06...
  • Page 10 [AKD4382A-SB] 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 7 Figure 7. [F4] window (2) (2) Click [START] button, then the sequence is executed.
  • Page 11 [AKD4382A-SB] 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 opens. Figure 8 Figure 8. [F5] window 7-1.

  • Page 12: Measurement Results

    [AKD4382A-SB] Measurement Results [Measurement condition] • Measurement unit : Audio Precision System two Cascade (AP2) • MCLK : 512fs (44.1kHz), 256fs (96kHz), 128fs (192kHz) • BICK : 64fs • fs : 44.1kHz, 96kHz, 192kHz • Bit : 24bit • Power Supply : VDD=5V •...
  • Page 13 [AKD4382A-SB] Plots (fs=44.1kHz) AK4382A FFT VDD=5V, fs=44.1kHz, fin=1kHz, 0dBFS input -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 9. FFT (fin=1kHz, 0dBFS input) AK4382A FFT VDD=5V, fs=44.1kHz, fin=1kHz, -60dBFS input -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 10.
  • Page 14 [AKD4382A-SB] (fs=44.1kHz) AK4382A FFT VDD=5V, fs=44.1kHz, No signal input -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 11. FFT (Noise Floor) AK4382A FFT Out of band noise VDD=5V, fs=44.1kHz, No signal input -100 -110 -120 -130 -140 -150...
  • Page 15 [AKD4382A-SB] (fs=44.1kHz) AK4382A THD+N vs. Input Level VDD=5V, fs=44.1kHz, fin=1kHz -100 -105 -110 -115 -120 -120 -110 -100 dBFS Figure 13 . THD+N vs. Input level (fin=1kHz) AK4382A THD+N vs. Input Frequency VDD=5V, fs=44.1kHz, 0dBFS input -100 -105 -110 -115 -120 Figure 14 .
  • Page 16 [AKD4382A-SB] (fs=44.1kHz) AK4382A Linearity VDD=5V, fs=44.1kHz, fin=1kHz -100 -110 -120 -120 -110 -100 dBFS Figure 15. Linearity (fin=1kHz) AK4382A Frequency Response VDD=5V, fs=44.1kHz, 0dBFS input +0.9 +0.8 +0.7 +0.6 +0.5 +0.4 +0.3 +0.2 +0.1 -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7...
  • Page 17 [AKD4382A-SB] (fs=44.1kHz) AK4382A Crosstalk (Red=Lch, Blue=Rch) VDD=5V, fs=44.1kHz, 0dBFS input -100 -105 -110 -115 -120 -125 -130 -135 -140 Figure 17. Crosstalk (0dBFS input) <KM089400> 2007/06...
  • Page 18 [AKD4382A-SB] (fs=96kHz) AK4382A FFT VDD=5V, fs=96kHz, fin=1kHz, 0dBFS input -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 18. FFT (fin=1kHz, 0dBFS input) AK4382A FFT Notch Filter = ON VDD=5V, fs=96kHz, fin=1kHz, 0dBFS input -100 -110 -120 -130 -140...
  • Page 19 [AKD4382A-SB] (fs=96kHz) AK4382A FFT VDD=5V, fs=96kHz, fin=1kHz, -60dBFS input -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 20. FFT (fin=1kHz, -60dBFS input) AK4382A FFT VDD=5V, fs=96kHz, No signal input -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 21.
  • Page 20 [AKD4382A-SB] (fs=96kHz) AK4382A THD+N vs. Input Level VDD=5V, fs=96kHz, fin=1kHz -100 -105 -110 -115 -120 -120 -110 -100 dBFS Figure 22. THD+N vs. Input level (fin=1kHz) AK4382A THD+N vs. Input Frequency VDD=5V, fs=96kHz, 0dBFS input -100 -105 -110 -115 -120 Figure 23.
  • Page 21 [AKD4382A-SB] (fs=96kHz) AK4382A Linearity VDD=5V, fs=96kHz, fin=1kHz -100 -110 -120 -120 -110 -100 dBFS Figure 24. Linearity (fin=1kHz) AK4382A Frequency Response VDD=5V, fs=96kHz, 0dBFS input +0.9 +0.8 +0.7 +0.6 +0.5 +0.4 +0.3 +0.2 +0.1 -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7...
  • Page 22 [AKD4382A-SB] (fs=96kHz) AK4382A Crosstalk (Red=Lch, Blue=Rch) VDD=5V, fs=96kHz, 0dBFS input -100 -105 -110 -115 -120 -125 -130 -135 -140 Figure 26. Crosstalk (0dBFS input) <KM089400> 2007/06...
  • Page 23 [AKD4382A-SB] (fs=192kHz) AK4382A FFT VDD=5V, fs=192kHz, fin=1kHz, 0dBFS input -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 27. FFT (fin=1kHz, 0dBFS input) AK4382A FFT Notch Filter = ON VDD=5V, fs=192kHz, fin=1kHz, 0dBFS input -100 -110 -120 -130 -140...
  • Page 24 [AKD4382A-SB] (fs=192kHz) AK4382A FFT VDD=5V, fs=192kHz, fin=1kHz, -60dBFS input -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 29. FFT (fin=1kHz, -60dBFS input) AK4382A FFT VDD=5V, fs=192kHz, No signal input -100 -110 -120 -130 -140 -150 -160 -170 -180 Figure 30.
  • Page 25 [AKD4382A-SB] (fs=192kHz) AK4382A THD+N vs. Input Level VDD=5V, fs=192kHz, fin=1kHz -100 -105 -110 -115 -120 -120 -110 -100 dBFS Figure 31. THD+N vs. Input level (fin=1kHz) AK4382A THD+N vs. Input Frequency VDD=5V, fs=192kHz, 0dBFS input -100 -105 -110 -115 -120 Figure 32.
  • Page 26 [AKD4382A-SB] (fs=192kHz) AK4382A Linearity VDD=5V, fs=192kHz, fin=1kHz -100 -110 -120 -120 -110 -100 dBFS Figure 33. Linearity (fin=1kHz) AK4382A Frequency Response VDD=5V, fs=192kHz, 0dBFS input +0.9 +0.8 +0.7 +0.6 +0.5 +0.4 +0.3 +0.2 +0.1 -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7...
  • Page 27 [AKD4382A-SB] (fs=192kHz) AK4382A Crosstalk (Red=Lch, Blue=Rch) VDD=5V, fs=192kHz, 0dBFS input -100 -105 -110 -115 -120 -125 -130 -135 -140 Figure 35. Crosstalk (0dBFS input) <KM089400> 2007/06...

  • Page 28: Revision History

    These products and their specifications are subject to change without notice. When you consider any use or application of these products, please make inquiries the sales office of Asahi Kasei EMD Corporation (AKEMD) or authorized distributors as to current status of the products.
  • Page 29 AK4382A open open PORT2 PORT2 CCLK CDTI uP-I/F uP-I/F 0.1u 0.1u 74LVC157 74LVC157 Title Title Title AKD4382A-SB AKD4382A-SB AKD4382A-SB Size Size Size Document Number Document Number Document Number AK4382A AK4382A AK4382A Date: Date: Date: Thursday, May 10, 2007 Thursday, May 10, 2007...
  • Page 30 470p 470p 3900p 3900p open open AOUTR+ 4.7k 4.7k 4.7k 4.7k 470p 470p Title Title Title AKD4382A-SB AKD4382A-SB AKD4382A-SB Size Size Size Document Number Document Number Document Number Analog Analog Analog Date: Date: Date: Thursday, May 10, 2007 Thursday, May 10, 2007...
  • Page 31 AK4113 PORT3 PORT3 short short 256fs@fs=88.2k/96kHz 128fs@fs=176.4k/192kHz TORX173 TORX173 short short 0.1u 0.1u Title Title Title AKD4382A-SB AKD4382A-SB AKD4382A-SB Size Size Size Document Number Document Number Document Number AK4113 AK4113 AK4113 Date: Date: Date: Thursday, May 10, 2007 Thursday, May 10, 2007...