AKD4394_07 AKM | Alldatasheet

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ASAHI KASEI [AKD4394] <KM063002> 1 ’07/01 General Description The AKD4394 is an evaluation board for AK4394, which is 192kHz sampling 24Bit ∆Σ DAC. The AKD4394 includes a LPF which can add differential analog outputs from the AK4394 and also has a digital interface with AKM’s wave generator using ROM data and AKM’s ADC evaluation boards. Therefore, it is easy to evaluate the AK4394. Ordering Guide AKD4394 Rev.C --- Evaluation board Rev.C for AK4394: differential output Function On-board differential output buffer circuit On-board clock generator BNC connector for an external clock input Compatible with 3types of interface 1. Direct interface with evaluation boards for AKM’s A/D converter (AKD539X, AKD535X) 2. Interface with a signal generator (AKD43XX) 3. On-board CS8414 as DIR which accepts optical input. 10pin Header External Clock ROM Data o r A/D input Optical Input CS8414 (DIR) Clock Generator AK4394 2nd Order LPF Rch Lch Fig.1 Block diagram * Circuit diagram and PCB layout are attached at the end of this manual. Evaluation board Rev.C for AK4394 AKD4394

ASAHI KASEI [AKD4394] <KM063002> 2 ’07/01 (AKD4394 Rev.C is same as AKD4393 Rev.C.)

ASAHI KASEI [AKD4394] <KM063002> 3 ’07/01 External Analog Circuit (Rev.C) The differential output circuit and LPF is implemented on board. The differential outputs of AK4394 is buffered by non-inverted circuit and output via Cannon connector(differential output). LPF adds differential outputs. NJM5534D is used for op-amp on this board that has low noise and high voltage torelance characteristics. Analog signal is output via Cannon and BNC connectors on the board. The output level is about 2.94Vrms(typ@VREF=5.0V) by Cannon and 2Vrms(typ@VREF=5.0V) by BNC. Fig.2 External Analog Filter Operation sequence 1. Set up the jumpers for power supply. [JP15(REG)] selects power supply for AVDD pin of AK4394. short: 5V is supplied from regulator. (default) Nothing should be connected to A5V jack. open: 5V is supplied from A5V. 2. Set up the power supply lines. +15V=15V, -15V=-15V: Power supply for op-amp. AVDD of AK4394 is supplied from “+15V” through regulator (JP15: short). A5V=5V: This jack is used when AVDD of AK4394 is supplied from this. In this case, JP15 should be open. DVDD=5V: Power supply for logic circuit on this board. VP=3V ∼5.25V: Digital (set JP10 to VP), AGND=DGND=0V . Each supply line should be distributed from the power unit. 3. Set up the evaluation modes by jumper pins and DIP switches.(See next item.) 4. Power on.(The AK4394 should be reset once by bringing PD "L" upon power-up.) *SW1 resets the AK4394 during operation. The AK4394 is reset at SW1="L" and exits resetting at SW1="H". 300 47u 300 AOUTL- 560 10n 300 220 10n 10u 0.1u 0.1u 10u 10u NJM5534D 300 47u 300 AOUTL+ 560 10n 300 220 10n 10u 0.1u 0.1u 10uNJM5534D 3 2 1 100 100 0.1u NJM5534D 0.1u 10u 1004 4.7n 620 620 430 4.7n Lch -15 +15 430

ASAHI KASEI [AKD4394] <KM063002> 4 ’07/01 The evaluation modes and corresponding jumper pins setting 1. Evaluation Modes

  • Applicable Evaluation Mode (1) DIR(Optical Link) (2) Ideal sine wave generated by ROM data (3) Using AD converted data (4)All interface signals including master clock are fed externally. (1) DIR(Optical Link) (default) PORT2 is used for the evaluation using such as CD test disk. The DIR generates MCLK, BICK and LRCK SDATAfrom the received data through optical connector(PORT2: TORX176). Fig.3 Jumper set-up (DIR) (2) Ideal sine wave generated by ROM data Digital signal generated by AKD43XX are used. PORT1 is used for the interface with AKD43XX. Master clock is sent from AKD4394 to AKD43XX then LRCK, BICK and SDATA are sent from AKD43XX to AKD4394. JP7 SD JP6 LR XTL/EXT DIR JP5 BI XTL/EXT DIR CLK JP9 DIR EXT XTL JP8 CKDIV1 JP4 BCP INV THR JP2 CS8414 VDD GND JP1 JP14 CKDIV2 1/2X XTL Fig.4 Jumper set-up (ROM data) JP7 SD JP6 LR XTL/EXT DIR JP5 BI XTL/EXT DIR CLK JP9 DIR EXT XTL JP4 JP8 CKDIV1 BCP INV THR BCP INV THR (others)(MSB justified) JP2 CS8414 VDD GND JP1 JP14 CKDIV2 1/2X 1XXTL

ASAHI KASEI [AKD4394] <KM063002> 5 ’07/01 (3) Using AD converted data AD converted data from AKM’s AD evaluation boards(AKD539X, AKD535X) is used through PORT1. * In case of using external clock through a BNC connector, select EXT of JP9 and short JP1. * In case of using the double speed sampling mode, select 1/2X of JP8 and set S2-2(DFS) on. JP7 SD JP6 LR XTL/EXT DIR JP5 BI XTL/EXT DIR CLK JP9 DIR EXT XTL JP8 CKDIV1 JP4 BCP INV THR JP2 CS8414 VDD GND JP1 JP14 CKDIV2 1/2X XTL Fig.5 Jumper set-up (A/D) (4) All interface signals including master clock are fed externally. Under the following set-up, MCLK, LRCK and SCLK signals needed for the D/A to operate could be fed through PORT1. JP7 SD JP6 LR XTL/EXT DIR JP5 BI XTL/EXT DIR CLK JP9 DIR EXT XTL JP8 CKDIV1 JP4 BCP INV THR JP2 CS8414 VDD GND JP1 JP14 CKDIV2 1/2X XTL Fig.6 Jumper set-up (ext.) 2. MCLK set-up When the LRCK is fed from the 74HC4040 on the board, The ratio of MCLK to LRCK can be selected by JP8 and JP14. JP14 JP8 X'tal MCLK fs MCLK/LRCK 1X 1X 12.288MHz 12.288MHz 48kHz 256 1X 2X 24.576MHz 24.576MHz 48kHz 512 1/2X 1X 24.576MHz 12.288MHz 96kHz 128 1/2X 2X 49.152MHz 12.288MHz 96kHz 128 Table.1 set-up example 3. BICK set-up When BICK is supplied from U1(74HC4040), either 32fs or 64fs could be selected. Fig.8 shows 64fs mode. 64fs mode is recommended. *Only mode 0(LSB justified 16bit mode) can correspond to 32fs. Fig.7 Jumper Set-up (BCS) JP3 BCS

ASAHI KASEI [AKD4394] <KM063002> 6 ’07/01 4. DIP switch set-up Confirm the set-up of the DIP switch before the operation. “ON” means “H” and “OFF” means “L”. 4-1. Set-up of SW3, SW4(Mode set-up of AK4394: see the data sheet of AK4394) DIF2 DIF1 DIF0 Mode BICK OFF OFF OFF 0: LSB justified, 16bit ≥32fs OFF OFF ON 1: LSB justified, 20bit ≥40fs OFF ON OFF 2: LSB justified, 24bit ≥48fs OFF ON ON 3: I 2S ≥48fs (default) ON OFF OFF 4: MSB justified, 24bit ≥48fs Table 2 Audio Serial Interface Format Select Pins (SW3-5,6,7) 4-2. Set-up of SW6 (Mode set-up of CS8414. About details, see the data-sheet of CS8414) Adjust the audio data format of CS8414 (DIR) to AK4394. CS8414 does not match the LSB justified 20bit/24bit mode of AK4394. (SW6-2) (SW6-3) (SW6-4) (SW6-5) Data format JP4 OFF OFF OFF OFF MSB justified, 24bit INV OFF OFF ON OFF I 2S THR (default) OFF ON OFF ON LSB justified, 16bit THR T a b l e 3 S e t - u p o f S W 6 SW6-1(SEL) :Usually ON. SW6-6(CS12): Select the channel for indicating the channel status. O N : R c h ( d e f a u l t ) , O F F : L c h 5. Parallel/Serial Control SW5: set up P/S pin of AK4394. H: parallel mode. PORT3 is used JP11, 12 and 13 should be open. L: serial mode. PORT3 is used. JP11, 12 and 13 should be open. 6. Other set-up SW1: Reset of AK4394. Select "H" during operation. SW2: Soft-mute of AK4394. The soft-mute is executed during SW2 pushed. LE1 : This LED shows pre-emphasis status. It turns on when the data is pre-emphasized. LE2 : This LED shows the output of VERF pin in CS8414. It turns on when the error is occured in CS8414.

ASAHI KASEI [AKD4394] <KM063002> 7 ’07/01 Control Software Manual „ Set-up of evaluation board and control software 1. Set up the AKD4394 according to previous term. 2. Connect IBM-AT compatible PC with AKD4394 by 10-line type flat cable (packed with AKD4394). 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 “AKD4394 Evaluation Kit” into the CD-ROM drive. 4. Access the CD-ROM drive and double-click the icon of “akd4394.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]: Set up the USB interface board (AKDUSBIF-A). 2. [Write default]: Initialize the register of AK4394. 3. [All Write]: Write all registers that is currently displayed. 4. [Function1]: Dialog to write data by keyboard operation. 5. [Function3]: The sequence of register setting can be set and executed. 6. [Function4]: The sequence that is created on [Function3] can be assigned to buttons and executed. 7. [Function5]: The register setting that is created by [SAVE] function on main window can be assigned to buttons and executed. 8. [SAVE]: Save the current register setting. 9. [OPEN]: Write the saved values to all register. 10. [Write]: 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.

ASAHI KASEI [AKD4394] <KM063002> 8 ’07/01 „ 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” When writing the input data to AK4394, click [OK] button. If not, click [Cancel] button. 2. [Function1 Dialog]: Dialog to write data by keyboard operation Address Box: Input registers address in 2 figures of hexadecimal. Data Box: Input registers data in 2 figures of hexadecimal. When writing the input data to AK4394, click [OK] button. If not, click [Cancel] button. 3. [Save] and [Open] 3-1. [Save] Save the current register setting data. The extension of file name is “akr”. (Operation flow) Click [Save] Button. Set the file name and push [Save] Button. The extension of file name is “akr”. 3-2. [Open] The register setting data saved by [Save] is written to AK4394. The file type is the same as [Save]. (Operation flow) (1) Click [Open] Button. (2) Select the file (*.akr) and Click [Open] Button.

ASAHI KASEI [AKD4394] <KM063002> 9 ’07/01 4. [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 1. Window of [F3] window as shown in Figure 2 opens.

Figure 2. [F4] window

(1) Click [OPEN] button and select the sequence file (*.aks). The sequence file name is displayed as shown in Figure 3. Figure 3. [F4] window(2) (2) Click [START] button, then the sequence is executed. [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. (1) [Function4] 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.

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 4 opens. Figure 4. [F5] window (1) Click [OPEN] button and select the register setting file (*.akr). (2) Click [WRITE] button, then the register setting is executed. [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.

ASAHI KASEI [AKD4394] <KM063002> 14 ’07/01 6-3. 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.

ASAHI KASEI [AKD4394] <KM063002> 15 ’07/01 AK4394 Measurement Example Conditions: AVDD =DVDD= 5.0V Interface = DIR (44.1kHz, 96kHz) MCLK = 256fs(fs=44.1kHz, 96kHz) BICK = 64fs fs = 44.1kHz, 96kHz, Input data = 24bit Measurement unit: Audio Precision System Two Cascade (fs=44.1kHz, 96kHz) (AKD4394 Rev.C: differential output) fs Result THD+N 100.3 20kLPF DR 120.1 22kLPF + A-weighted 44.1kHz S/N 120.2 22kLPF + A-weighted THD+N 99.6 40kLPF DR 119.2 80kLPF + A-weighted 96kHz S/N 119.8 80kLPF + A-weighted Plot: FFT Point: 16384 Window: Equiripple Averages: 4

ASAHI KASEI [AKD4394] <KM063002> 16 ’07/01 (fs=44.1kHz) AKM AK4394 FFT(Input Level=0dBFS,fin=1kHz) -160 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d B r A 20 20k50 100 200 500 1k 2k 5k 10k Hz FFT (Input Level=0dBFS, fin=1kHz)

ASAHI KASEI [AKD4394] <KM063002> 17 ’07/01 AKM AK4394 FFT(Input Level=-60dBFS,fin=1kHz) -160 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d B r A 20 20k50 100 200 500 1k 2k 5k 10k Hz FFT (Input Level=-60dBFS, fin=1kHz) (fs=44.1kHz)

ASAHI KASEI [AKD4394] <KM063002> 18 ’07/01 AKM AK4394 FFT(Input="0"data) -160 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d B r A 20 20k50 100 200 500 1k 2k 5k 10k Hz FFT (noise floor)

ASAHI KASEI [AKD4394] <KM063002> 19 ’07/01 AKM AK4394 FFT(Input = "0"data, out-of band) -160 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d B r A 90 100k200 500 1k 2k 5k 10k 20k 50k Hz FFT (noise floor, out-of band)

ASAHI KASEI [AKD4394] <KM063002> 20 ’07/01 (fs=44.1kHz) AKM AK4394 THD + N vs Amplitude(fin=1kHz) -120 -90 -118 -116 -114 -112 -110 -108 -106 -104 -102 -100 -98 -96 -94 -92 d B r A -140 +0-130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 dBFS THD + N vs Amplitude (fin=1kHz) AKM AK4394 THD + N vs Input Frequency(Input Level=0dBFS) -110 -80 -108 -106 -104 -102 -100 -98 -96 -94 -92 -90 -88 -86 -84 -82 d B r A 20 20k50 100 200 500 1k 2k 5k 10k Hz THD +N vs Input Frequency (Input Level=0dBFS)

ASAHI KASEI [AKD4394] <KM063002> 21 ’07/01 (fs=44.1kHz) AKM AK4394 Linearity -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d B r A -140 +0-130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 dBFS Linearity (fin=1kHz) AKM AK4394 Frequency Response -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 +0.8 +0.9 d B r A 20 20k50 100 200 500 1k 2k 5k 10k Hz Frequency Response (Input Level=0dBFS)

ASAHI KASEI [AKD4394] <KM063002> 22 ’07/01 (fs=44.1kHz) AKM AK4394 Crosstalk -140 -100 -138 -136 -134 -132 -130 -128 -126 -124 -122 -120 -118 -116 -114 -112 -110 -108 -106 -104 -102 d B r A 20 20k50 100 200 500 1k 2k 5k 10k Hz Crosstalk (upper = Rch, Lower = Lch)

ASAHI KASEI [AKD4394] <KM063002> 23 ’07/01 (fs=96kHz) AKM AK4394 FFT (Input Leve=0dBFS, fin=1kHz, Notch) -160 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d B r A 40 40k50 100 200 500 1k 2k 5k 10k 20k Hz FFT (Input Level=0dBFS, fin=1kHz, notch) AKM AK4394 FFT (Input Leve=-60dBFS, fin=1kHz) -160 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d B r A 40 40k50 100 200 500 1k 2k 5k 10k 20k Hz FFT (Input Level=-60dBFS, fin=1kHz)

ASAHI KASEI [AKD4394] <KM063002> 24 ’07/01 (fs=96kHz) AKM AK4394 FFT (Input = "0"data) -160 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d B r A 40 40k50 100 200 500 1k 2k 5k 10k 20k Hz FFT (noise floor) AKM AK4394 THD + N vs Amplitude(fin=1kHz) -120 -90 -118 -116 -114 -112 -110 -108 -106 -104 -102 -100 -98 -96 -94 -92 d B r A -140 +0-130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 dBFS THD + N vs Amplitude (fin=1kHz)

ASAHI KASEI [AKD4394] <KM063002> 25 ’07/01 (fs=96kHz) AKM AK4394 THD + N vs Input Frequency(Input Level=0dBFS) -110 -80 -108 -106 -104 -102 -100 -98 -96 -94 -92 -90 -88 -86 -84 -82 d B r A 40 40k50 100 200 500 1k 2k 5k 10k 20k Hz THD + N vs Input Frequency (Input Level=0dBFS) AKM AK4394 Linearity -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d B r A -140 +0-130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 dBFS Linearity (fin=1kHz)

ASAHI KASEI [AKD4394] <KM063002> 26 ’07/01 (fs=96kHz) AKM AK4394 Frequency Response -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 +0.8 +0.9 d B r A 40 40k50 100 200 500 1k 2k 5k 10k 20k Hz Frequency Response (Input Level=0dBFS) AKM AK4394 Crosstalk -140 -50 -135 -130 -125 -120 -115 -110 -105 -100 -95 -90 -85 -80 -75 -70 -65 -60 -55 d B r A 40 40k50 100 200 500 1k 2k 5k 10k 20k Hz Crosstalk (upper = Rch, Lower = Lch)

ASAHI KASEI [AKD4394] <KM063002> 27 ’07/01

Revision History

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  • 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 ha rmless from any and all claims arising from the use of said product in the absence of such notification. Date (YY/MM/DD) Manual Revision Board Revision Reason Contents 07/01/23 KM063002 C Control Soft Manual Control Soft Manual addition