[AKD4628A-B] AKD4628A-B AK4628A Evaluation Board Rev.1 GENERAL DESCRIPTION The AKD4628A-B is an evaluation board for the AK4628A, a single chip CODEC that includes two channels of ADC and eight channels of DAC. The AKD4628A-B also has the digital audio interface and can achieve the interface with digital audio systems via opt-connector or BNC connector. Ordering guide AKD4628A-B --- AK4628A Evaluation Board (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 On-board analog input buffer circuit Compatible with 2 types of interface - DIT (AK4103A)/DIR (AK4112B) with optical output/input and BNC input - Direct interface with AC3 decoder by 10pin header 10pin header for serial control interface -15V +15V LIN Regulator GND Input Buffer RIN Control Data 10pin Header LOUT1 ROUT1 LOUT2 BNC In AK4112B(DIR) Output Buffer AK4628A Opt In AK4103A(DIT) Opt Out ROUT2 AC3 LOUT3 10pin Header ROUT3 LOUT4 ROUT4 Fig 1. AKD4628A-B Block Diagram *Circuit diagram and PCB layout are attached at the end of this manual. <KM084901> -1- 2007/07 [AKD4628A-B] Operation sequence (1) Set up the power supply lines. [+12V] (Orange jack) = +12 ∼ +15V [-12V] (Blue jack) = -12 ∼ -15V [AGND] (Black jack) = 0V [DGND] (Black jack) = 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, AK4628A and TVDD of AK4112B. +3.3V is supplied to AVDD and DVDD of AK4112B and TVDD of AK4628A. (2) Set up the evaluation mode and jumper pins. (See p.6.) (3) Power on. The AK4628A, AK4112B and AK4103A should be reset once bringing PDN (SW1) “L” upon power-up. (4) Set up software. The control mode of AK4628A and AK4112B is fixed to “serial”. 10 <KM084901> -2- 9 CSN CCLK The AKD4628A-B 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 AKD4628A-B. Take care of the direction of connector. There is a mark at pin#1. The pin layout of PORT1 is as Figure 2. PORT1 uP-I/F CDTI CDTO 2 1 Figure 2. PORT1 pin layout 2007/07 [AKD4628A-B] 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. “4112B” should be selected on JP4, 5, 6 and 7. 3) Loop back mode Clock mode of the AK4112B should be set to PLL mode or X’tal mode. “4112B” 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 Don’t care TOTX176 CM1=”0”, CM0=”1”(X’tal mode) optical output DAC CM1=”0”, CM0=”0”(PLL mode) “4112B” Loop back CM1=”0”, CM0=”1”(X’tal mode) “4112B” Using DSP CM1=”0”, CM0=”0”(PLL mode) “DSP” PORT5 (10-pin Header) (Note.) 1. Software “akd4628a-b-ak4112b.exe” packed with the AKD4628A-B 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 DIP Switch set up. (See the datasheet of AK4628A and AK4103A) 1.DFS_4628A (SW2-1) set up of AK4628A Sampling speed (fs). DFS_4628A OFF ON Sampling Speed (fs) Normal Speed Mode 32kHz~48kHz Double Speed Mode 64kHz~96kHz Table 3. Set up of Sampling Speed (fs) Default 2.V (SW2-2) set up of AK4103A Validity detect. V OFF ON Validity Default Valid Invalid Table 4. Set up of Validity 3.FS3 (SW2-3), FS2 (SW2-4) set up of AK4103A Sampling frequency setting. FS3 OFF OFF ON ON FS2 Sampling frequency setting Default OFF 44.1kHz ON 48kHz OFF Reserved ON 32kHz Table 5. Set up of sampling frequency setting 4.CKS0 (SW2-5) set up of AK4103A System Clock. CKS1 OFF ON <KM084901> MCLK fs 256fs 28k-108kHz Default 512fs 28k-54kz Table 6.Set up of System Clock -3- 2007/07 [AKD4628A-B] 5.DIF0 (SW2-6) set up of AK4103A Audio Serial Interface Format. DIF0 OFF ON Audio Serial LRCK BICK Interface Format 24bit, Left justified H/L 48fs-128fs 24bit, I2S L/H 48fs-128fs Table 7. Set up of Audio Serial Interface Format Default Jumper pin set up [JP1] (GND) ---Analog GND and Digital GND [JP4, 5, 6, 7] (SDTI1, 2, 3, 4) --- AK4628A 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> <TX> --- AK4112B V/TX output select. : Validity. : Transmit channel (through data) <default> [JP2](OPT/COAX) --- The source of the biphase signal input to the AK4112B <OPT_IN> : Optical input to RX1 of AK4112B <default> <RX2> : BNC input to RX1 of AK4112B The function of the toggle SW. [SW1]: Resets the AK4628A, AK4112B and AK4103A. Keep “H” during normal operation. The indication content for LED. [LE1] (DZF1) [LE2] (DZF2_OVF) [LE3] (ERF) [LE4] (FS96) [LE5] (AUTO) [LE6] (V) <KM084901> : Zero detection : Zero detection or Overflow Detection : AK4112B unlock and parity error output. : AK4112B 96kHz sampling detect. : AK4112B AC-3/MPEG detect. : AK4112B Validity detect -4- 2007/07 [AKD4628A-B] Analog input circuit 3.0Vpp Op-amp circuit AK4628A 330 22u 6.0Vpp + - RIN 32 LIN 31 OP275GPZ 330 Signal 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. <KM084901> -5- 2007/07 [AKD4628A-B] Analog output circuit 3.0Vpp 6.0Vpp OP275GPZ 22u AK4628A ROUT1 28 LOUT1 27 Same circuit ROUT2 26 Same circuit LOUT2 25 Same circuit ROUT3 24 Same circuit LOUT3 23 Same circuit ROUT4 22 Same circuit LOUT4 21 Same circuit 220 + - 10k 4.7k Signal 330p 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 AK4628A. Frequency response of 1st-order HPF | Amplitude |2 = 1/{1+(fc/f)2}; fc=1/2πRC=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. <KM084901> -6- 2007/07 [AKD4628A-B] 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 = 1/2πRC = 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 Frequency Response 0dB -0.121dB -0.452dB -1.448dB 145kHz -3dB ∞ -6dB If the frequency response of filter influences the system, 1st-order LPF is also available as the following figure: 3.0Vpp LPF ROUT1 28 LOUT1 27 Same circuit ROUT2 26 Same circuit LOUT2 25 Same circuit ROUT3 24 Same circuit LOUT3 23 Same circuit ROUT4 22 Same circuit LOUT4 21 Same circuit 6.0Vpp OP275GPZ 22u AK4628A + - 10k 4.7k 220 Signal 3300p 4.7k Example of LPF with flat response. Frequency response of this LPF | Amplitude |2 = 1/{1+(f/fc)2}; fc = 1/2πRC = 219kHz@R=220,C=3300p Frequency response referenced to output level of this board is as following table: fin DC 20kHz 40kHz 80kHz Frequency Response 0dB -0.036dB -0.142dB -0.543dB 219kHz -3dB ∞ -∞dB The total frequency response of this board is sum of the external filter and internal LPF of AK4628A. These filters are effective to attenuate the high frequency noise since some measurement units is sensitive for out-of-band noise. <KM084901> -7- 2007/07 [AKD4628A-B] CONTROL SOFTWARE MANUAL Set-up of evaluation board and control software 1. Set up the AKD4628A-B according to previous term. 2. Connect IBM-AT compatible PC with AKD4628A-B by 10-line type flat cable (packed with AKD4628A-B). 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 “AKD4628A-B Evaluation Kit” into the CD-ROM drive. 4. Access the CD-ROM drive and double-click the icon of the control files as following to set up the control program. “akd4628a-b-ak4628a.exe” – AK4628A control program “akd4628a-b-ak4112b.exe” – AK4112B control program 5. Then please evaluate according to the follows. (Note) 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 and the control software packed with this do not correspond to I2C control. Operation flow Keep the following flow. 1. Set up the control program according to explanation above. 2. Click “Port Reset” button. 3. Click “Write default” button Explanation of each buttons 1. [Port Reset]: 2. [Write default]: 3. [All Write]: 4. [Function1]: 5. [Function2]: 6. [Function3]: 7. [Function4]: 8. [Function5]: 9. [SAVE]: 10. [OPEN]: 11. [Write]: Set up the USB interface board (AKDUSBIF-A) when using the board. Initialize the register of the AK4628A, AK4112B. Write all registers that are currently displayed. Dialog to write data by keyboard operation. Dialog to write data by keyboard operation. The sequence of register setting can be set and executed. The sequence that is created on [Function3] can be assigned to buttons and executed. The register setting that is created by [SAVE] function on main window can be assigned to buttons and executed. Save the current register setting. Write the saved values to all register. 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. <KM084901> -8- 2007/07 [AKD4628A-B] 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” or “1”. If not, “L” or “0”. If you want to write the input data to the AK4628A, AK4112B, click [OK] button. If not, click [Cancel] button. 2. [Function1 Dialog]: Dialog to write data by keyboard operation Address Box: Data Box: Input registers address in 2 figures of hexadecimal. Input registers data in 2 figures of hexadecimal. If you want to write the input data to the AK4628A, AK4112B, click [OK] button. If not, click [Cancel] button. 3. [Function2 Dialog]: Dialog to evaluate DATT There are dialogs corresponding to register of 03h and 04h. Address Box: Input registers address in 2 figures of hexadecimal. Start Data Box: Input starts data in 2 figures of hexadecimal. End Data Box: Input end data in 2 figures of hexadecimal. Interval Box: Data is written to the AK4628A, AK4112B 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 the AK4628A, AK4112B, click [OK] button. If not, click [Cancel] button. <KM084901> -9- 2007/07 [AKD4628A-B] 4. [SAVE] and [OPEN] 4-1. [SAVE] All of current register setting values displayed on the main window are saved to the file. The extension of file name is “akr”. <Operation flow> (1) Click [SAVE] Button. (2) Set the file name and click [SAVE] Button. The extension of file name is “akr”. 4-2. [OPEN] The register setting values saved by [SAVE] are written to the AK4628A, AK4112B. The file type is the same as [SAVE]. <Operation flow> (1) Click [OPEN] Button. (2) Select the file (*.akr) and Click [OPEN] Button. <KM084901> -10- 2007/07 [AKD4628A-B] 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. (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] <KM084901> -11- 2007/07 [AKD4628A-B] 6. [Function4 Dialog] The sequence file (*.aks) saved by [Function3] can be listed up to 10 files, assigned to buttons and then executed. When [F4] button is clicked, the window as shown in Figure 2 opens. Figure 2. [F4] window <KM084901> -12- 2007/07 [AKD4628A-B] 6-1. [OPEN] buttons on left side and [START] buttons (1) Click [OPEN] button and select the sequence file (*.aks) saved by [Function3]. The sequence file name is displayed as shown in Figure 3. ( In case that the selected sequence file name is “DAC_Stereo_ON.aks”) Figure 3. [F4] window(2) (2) Click [START] button, then the sequence is executed. 6-2. [SAVE] and [OPEN] buttons on right side [SAVE] : The name assign of sequence file displayed on [Function4] window can be saved to the file. The file name is “*.ak4”. [OPEN] : The name assign of sequence file(*.ak4) saved by [SAVE] is loaded. 6-3. Note (1) This function doesn't support the pause function of sequence function. (2) All files used by [SAVE] and [OPEN] function on right side need to be in the same folder. (3) When the sequence is changed in [Function3], the sequence file (*.aks) should be loaded again in order to reflect the change. <KM084901> -13- 2007/07 [AKD4628A-B] 7. [Function5 Dialog] The register setting file(*.akr) saved by [SAVE] function on main window can be listed up to 10 files, assigned to buttons and then executed. When [F5] button is clicked, the window as shown in Figure 4 opens. Figure 4. [F5] window 7-1. [OPEN] buttons on left side and [WRITE] button (1) Click [OPEN] button and select the register setting file (*.akr). (2) Click [WRITE] button, then the register setting is executed. 7-2. [SAVE] and [OPEN] buttons on right side [SAVE] : The name assign of register setting file displayed on [Function5] window can be saved to the file. The file name is “*.ak5”. [OPEN] : The name assign of register setting file(*.ak5) saved by [SAVE] is loaded. 7-3. Note (1) All files used by [SAVE] and [OPEN] function on right side need to be in the same folder. (2) When the register setting is changed by [SAVE] Button on the main window, the register setting file (*.akr) should be loaded again in order to reflect the change. <KM084901> -14- 2007/07 [AKD4628A-B] MEASUREMENT RESULTS 1) ADC part [Measurement condition] • Measurement unit : Audio Precision, System two, Cascade : 256fs • MCLK : 64fs • BICK • fs : 48kHz, 96kHz • BW : 10Hz∼20kHz(fs=48kHz), 10Hz∼48kHz(fs=96kHz) • Bit : 24bit : AVDD=DVDD= TVDD=5V • Power Supply : DIT(AK4103) • Interface : Room • Temperature fs=48kHz Parameter S/(N+D) DR S/N fs=96kHz Parameter S/(N+D) DR S/N <KM084901> Input signal 1kHz, -0.5dB 1kHz, -60dB No signal Input signal 1kHz, -0.5dB 1kHz, -60dB No signal Measurement filter 20kLPF 20kLPF 20kLPF+A-weighted 20kLPF 20kLPF+A-weighted Measurement filter fs/2 fs/2 fs/2+A-weighted fs/2 fs/2+A-weighted -15- Lch 95.6dB 99.3dB 101.8dB 99.5dB 101.8dB Rch 95.7dB 99.0dB 101.2dB 99.4dB 101.2dB Lch 91.7dB 96.3dB 99.0dB 96.3dB 99.1dB Rch 92.2dB 95.9dB 98.1dB 95.9dB 98.1dB 2007/07 [AKD4628A-B] 2) DAC part [Measurement condition] • Measurement unit : Audio Precision, System two, Cascade(fs=48kHz, 96kHz) : 256fs • MCLK • BICK : 64fs • fs : 48kHz, 96kHz : 10Hz∼22kHz (fs=48kHz), 10Hz∼40kHz (fs=96kHz) • BW : 24bit • Bit : AVDD=DVDD= TVDD=5V • Power Supply • Interface : DIR(AK4112B) • Temperature : Room fs=48kHz Parameter S/(N+D) DR S/N fs=96kHz Parameter S/(N+D) DR S/N <KM084901> Input signal 1kHz, 0dB 1kHz, -60dB No signal Input signal 1kHz, 0dB 1kHz, -60dB No signal Measurement filter 20kLPF 20kLPF 22kLPF+A-weighted 20kLPF 22kLPF+A-weighted Lch 97.7dB 102.6dB 105.7dB 102.5dB 105.9dB Rch 97.4dB 102.6dB 105.5dB 102.5dB 105.9dB Measurement filter 40kHzLPF 40kHzLPF 40kHz +A-weighted 40kHz 40kHz +A-weighted Lch 92.7dB 100.3dB 105.7dB 100.7dB 106.1dB Rch 92.7dB 100.3dB 105.9dB 100.8dB 106.3dB -16- 2007/07 [AKD4628A-B] 1.ADC (ADC fs=48kHz) AKM AK4628A FFT AVDD=DVDD=5V, fs=48kHz, -0.5dBr input, fin=1kHz +0 -10 -20 -30 -40 -50 -60 -70 d B F S -80 -90 -100 -110 -120 -130 -140 -150 -160 -170 -180 20 50 100 200 500 1k 2k 5k 10k 20k 5k 10k 20k Hz FFT (Input=-0.5dBr, fin=1kHz) AKM AK4628A FFT AVDD=DVDD=5V, fs=48kHz, -60dBr input, fin=1kHz +0 -10 -20 -30 -40 -50 -60 -70 d B F S -80 -90 -100 -110 -120 -130 -140 -150 -160 -170 -180 20 50 100 200 500 1k 2k Hz FFT (Input=-60dBr, fin=1kHz) <KM084901> -17- 2007/07 [AKD4628A-B] (ADC fs=48kHz) AKM AK4628A FFT AVDD=DVDD=5V, fs=48kHz, No signal input, fin=1kHz +0 -10 -20 -30 -40 -50 -60 -70 d B F S -80 -90 -100 -110 -120 -130 -140 -150 -160 -170 -180 20 50 100 200 500 1k 2k 5k 10k 20k Hz FFT (noise floor) <KM084901> -18- 2007/07 [AKD4628A-B] (ADC fs=48kHz) AKM AK4628A THD+N vs. Input Level AVDD=DVDD=5V, fs=96kHz, fin=1kHz -70 -75 -80 -85 -90 d B F S -95 -100 -105 -110 -115 -120 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 +0 dBr THD + N vs Amplitude (fin=1kHz) AKM AK4628A THD+N vs. Input Frequency AVDD=DVDD=5V, -0.5dBr input, fs=48kHz -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=-0.5dBr) <KM084901> -19- 2007/07 [AKD4628A-B] (ADC fs=48kHz) AKM AK4628A Linearity AVDD=DVDD=5V, fs=48kHz, fin=1kHz +0 -10 -20 -30 -40 -50 d B F S -60 -70 -80 -90 -100 -110 -120 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 +0 dBr Linearity(fin=1kHz) AKM AK4628A Frequency Response AVDD=DVDD=5V, -0.5dBr input, fs=48kHz +0 -0.1 -0.2 -0.3 -0.4 d B F S -0.5 -0.6 -0.7 -0.8 -0.9 -1 20 50 100 200 500 1k 2k 5k 10k 20k Hz Frequency Response(Input Level=-0.5dBr) (including input RC filter) <KM084901> -20- 2007/07 [AKD4628A-B] (ADC fs=48kHz) AKM AK4628A Crosstalk DVDD=AVDD=5V, -0.5dBr input, fs=48kHz -80 -85 -90 -95 -100 -105 -110 d B -115 -120 -125 -130 -135 -140 -145 -150 20 50 100 200 500 1k 2k 5k 10k 20k Hz Crosstalk (Blue= Rch, Red = Lch) <KM084901> -21- 2007/07 [AKD4628A-B] (ADC fs=96kHz) AKM AK4628A FFT AVDD=DVDD=5V, fs=96kHz, -0.5dBr input, fin=1kHz +0 -10 -20 -30 -40 -50 -60 -70 d B F S -80 -90 -100 -110 -120 -130 -140 -150 -160 -170 -180 40 50 100 200 500 1k 2k 5k 10k 20k 40k 10k 20k 40k Hz FFT(Input=-0.5dBr, fin=1kHz) AKM AK4628A FFT AVDD=DVDD=5V, fs=96kHz, -60dBr input, fin=1kHz +0 -10 -20 -30 -40 -50 -60 -70 d B F S -80 -90 -100 -110 -120 -130 -140 -150 -160 -170 -180 40 50 100 200 500 1k 2k 5k Hz FFT(Input=-60dBr, fin=1kHz) <KM084901> -22- 2007/07 [AKD4628A-B] (ADC fs=96kHz) AKM AK4628A FFT AVDD=DVDD=5V, fs=96kHz, No signal input, fin=1kHz +0 -10 -20 -30 -40 -50 -60 -70 d B F S -80 -90 -100 -110 -120 -130 -140 -150 -160 -170 -180 20 50 100 200 500 1k 2k 5k 10k 20k Hz FFT(Noise floor) <KM084901> -23- 2007/07 [AKD4628A-B] (ADC fs=96kHz) AKM AK4628A THD+N vs. Input Level AVDD=DVDD=5V, fs=96kHz, fin=1kHz -70 -75 -80 -85 -90 d B F S -95 -100 -105 -110 -115 -120 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 +0 dBr THD + N vs Amplitude(fin=1kHz) AKM AK4628A THD+N vs. Input Frequency AVDD=DVDD=5V, -0.5dBr input, fs=96kHz -70 -75 -80 -85 -90 d B F S -95 -100 -105 -110 -115 -120 40 50 100 200 500 1k 2k 5k 10k 20k 40k Hz THD + N vs Input Frequency(Input Level=-0.5dBr) <KM084901> -24- 2007/07 [AKD4628A-B] (ADC fs=96kHz) AKM AK4628A Linearity AVDD=DVDD=5V, fs=96kHz, fin=1kHz +0 -10 -20 -30 -40 -50 d B F S -60 -70 -80 -90 -100 -110 -120 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 +0 dBr Linearity(fin=1kHz) AKM AK4628A Frequency Response AVDD=DVDD=5V, -0.5dBr input, fs=96kHz +0 -0.1 -0.2 -0.3 -0.4 d B F S -0.5 -0.6 -0.7 -0.8 -0.9 -1 40 50 100 200 500 1k 2k 5k 10k 20k 40k Hz Frequency Response(Input Level=-0.5dBr) (including input RC filter) <KM084901> -25- 2007/07 [AKD4628A-B] (ADC fs=96kHz) AKM AK4628A Crosstalk DVDD=AVDD=5V, -0.5dBr input, fs=96kHz -80 -85 -90 -95 -100 -105 -110 d B -115 -120 -125 -130 -135 -140 -145 -150 40 50 100 200 500 1k 2k 5k 10k 20k 40k Hz Crosstalk (Blue= Rch, Red = Lch) <KM084901> -26- 2007/07 [AKD4628A-B] 2.DAC (DAC fs=48kHz) AKM AK4628A FFT AVDD=DVDD=5V, fs=48kHz, MCLK=512, 0dBFS input, fin=1kHz +0 -10 -20 -30 -40 -50 -60 -70 d B r -80 A -100 -90 -110 -120 -130 -140 -150 -160 -170 -180 20 50 100 200 500 1k 2k 5k 10k 20k 10k 20k Hz FFT (Input=0dBFS, fin=1kHz) AKM AK4628A FFT AVDD=DVDD=5V, fs=48kHz, MCLK=512, -60dBFS input, fin=1kHz +0 -10 -20 -30 -40 -50 -60 -70 d B r -80 A -100 -90 -110 -120 -130 -140 -150 -160 -170 -180 20 50 100 200 500 1k 2k 5k Hz FFT (Input=-60dBFS, fin=1kHz) <KM084901> -27- 2007/07 [AKD4628A-B] (DAC fs=48kHz) AKM AK4628A FFT AVDD=DVDD=5V, fs=48kHz, fin=No signal +0 -10 -20 -30 -40 -50 -60 -70 d B r -80 A -100 -90 -110 -120 -130 -140 -150 -160 -170 -180 20 50 100 200 500 1k 2k 5k 10k 20k Hz FFT (Noise floor) AKM AK4628A FFT Out-of-band noise AVDD=DVDD=5V, fs=48kHz, MCLK=512fs, fin=No signal +0 -10 -20 -30 -40 -50 -60 -70 d B r -80 A -100 -90 -110 -120 -130 -140 -150 -160 -170 -180 20 50 100 200 500 1k 2k 5k 10k 20k 50k 100k Hz FFT (Out-of-band noise) <KM084901> -28- 2007/07 [AKD4628A-B] (DAC fs=48kHz) AKM AK4628A THD+N vs. Input Level AVDD=DVDD=5V, fs=48kHz, MCLK=512fs, fin=1kHz -70 -75 -80 -85 -90 d B r -95 A -100 -105 -110 -115 -120 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 +0 dBFS THD + N vs Amplitude(fin=1kHz) AKM AK4628A THD+N vs. Input Frequency AVDD=DVDD=5V, fs=48kHz, MCLK=512fs, 0dBFS input -70 -75 -80 -85 -90 d B r -95 A -100 -105 -110 -115 -120 20 50 100 200 500 1k 2k 5k 10k 20k Hz THD + N vs Input Frequency (Input=0dBFS) <KM084901> -29- 2007/07 [AKD4628A-B] (DAC fs=48kHz) AKM AK4628A Linearity AVDD=DVDD=5V, fs=48kHz, MCLK=512fs, fin=1kHz +0 -10 -20 -30 -40 d B r A -50 -60 -70 -80 -90 -100 -110 -120 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 +0 dBFS Linearity(fin=1kHz) AKM AK4628A Frequency Response AVDD=DVDD=5V, fs=48kkHz, MCLK=512fs, 0dBFS input +1 +0.9 +0.8 +0.7 +0.6 +0.5 +0.4 +0.3 +0.2 d B r A +0.1 +0 -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 -0.8 -0.9 -1 2k 4k 6k 8k 10k 12k 14k 16k 18k 20k Hz Frequency Response(Input Level=0dBFS) (including external RC filter) <KM084901> -30- 2007/07 [AKD4628A-B] (DAC fs=48kHz) AKM AK4628A Crosstalk (Red=Lch, Blue=Rch) AVDD=DVDD=5V, fs=8kHz, MCLK=512fs, 0dBFS input -80 -85 -90 -95 -100 -105 d B -110 -115 -120 -125 -130 -135 -140 20 50 100 200 500 1k 2k 5k 10k 20k Hz Crosstalk(Red=Rch, Blue=Lch) <KM084901> -31- 2007/07 [AKD4628A-B] (DAC fs=96kHz) AKM AK4628 FFT AVDD=DVDD=5V, fs=96kHz, MCLK=256fs, 0dBFS input, fin=1kHz +0 -10 -20 -30 -40 -50 -60 -70 d B r -80 A -100 -90 -110 -120 -130 -140 -150 -160 -170 -180 40 50 100 200 500 1k 2k 5k 10k 20k 40k 10k 20k 40k Hz FFT (Input=0dBFS, fin=1kHz) AKM AK4628A FFT fs=96kHz, MCLK=256fs, fin=1kHz, 0dBFS input, Notch=ON +0 -10 -20 -30 -40 -50 -60 -70 d B r -80 A -100 -90 -110 -120 -130 -140 -150 -160 -170 -180 40 50 100 200 500 1k 2k 5k Hz FFT (Input=0dBFS, fin=1kHz, Notch) <KM084901> -32- 2007/07 [AKD4628A-B] (DAC fs=96kHz) AKM AK4628A FFT AVDD=DVDD=5V, fs=96kHz, MCLK=256fs, 0dBFS input, fin=1kHz +0 -10 -20 -30 -40 -50 -60 -70 d B r -80 A -100 -90 -110 -120 -130 -140 -150 -160 -170 -180 40 50 100 200 500 1k 2k 5k 10k 20k 40k 20k 40k Hz FFT (Input=-60dBFS,fin=1kHz) AKM AK4628A FFT AVDD=DVDD=5V, fs=96kHz, MCLK=256fs, fin=No signal input +0 -10 -20 -30 -40 -50 -60 -70 d B r -80 A -100 -90 -110 -120 -130 -140 -150 -160 -170 -180 40 50 100 200 500 1k 2k 5k 10k Hz FFT (Noise floor) <KM084901> -33- 2007/07 [AKD4628A-B] (DAC fs=96kHz) AKM AK4626A FFT Out-of-band noise AVDD=DVDD=5V, fs=44.1kHz, MCLK=512fs, fin=No signal +0 -10 -20 -30 -40 -50 -60 -70 d B r -80 A -100 -90 -110 -120 -130 -140 -150 -160 -170 -180 20 50 100 200 500 1k 2k 5k 10k 20k 50k 100k Hz FFT (Out-of-band noise) <KM084901> -34- 2007/07 [AKD4628A-B] (DAC fs=96kHz) AKM AK4626A THD+N vs. Input Level AVDD=DVDD=5V, fs=96kHz, MCLK=256fs, fin=1kHz -70 -75 -80 -85 -90 d B r -95 A -100 -105 -110 -115 -120 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 +0 dBFS THD + N vs Amplitude (fin=1kHz) AKM AK4628A THD+N vs. Input Frequency VDD=5V, fs=96kHz, MCLK=256fs, 0dBFS input -70 -75 -80 -85 -90 d B r -95 A -100 -105 -110 -115 -120 40 50 100 200 500 1k 2k 5k 10k 20k 40k Hz THD + N vs Input Frequency (Input=0dBFS) <KM084901> -35- 2007/07 [AKD4628A-B] (DAC fs=96kHz) AKM AK4628A Linearity AVDD=DVDD=5V, fs=96kHz, MCLK=256fs, fin=1kHz +0 -10 -20 -30 -40 d B r A -50 -60 -70 -80 -90 -100 -110 -120 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 +0 dBFS Linearity(fin=1kHz) AKM AK4628A Frequency Response AVDD=DVDD=5V, fs=96kHz, MCLK=256fs, 0dBFS input +1 +0.9 +0.8 +0.7 +0.6 +0.5 +0.4 +0.3 +0.2 d B r A +0.1 +0 -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 -0.8 -0.9 -1 2.5k 5k 7.5k 10k 12.5k 15k 17.5k 20k 22.5k 25k 27.5k 30k 32.5k 35k 37.5k 40k Hz Frequency Response(Input Level=0dBFS) (including external RC filter) <KM084901> -36- 2007/07 [AKD4628A-B] (DAC fs=96kHz) AKM AK4628A Crosstalk (Red=Lch, Blue=Rch) AVDD=DVDD=5V, fs=96kHz, MCLK=256fs, 0dBFS input -80 -85 -90 -95 -100 -105 d B -110 -115 -120 -125 -130 -135 -140 40 50 100 200 500 1k 2k 5k 10k 20k 40k Hz Crosstalk (Red=Rch, Blue=Lch) <KM084901> -37- 2007/07 [AKD4628A-B] Revision History Date Manual Board Reason Contents (YY/MM/DD) Revision Revision 06/08/29 KM084900 0 First Edition 07/07/03 KM084901 1 Circuit Change U2, U4, U5, U6, U7: OPAmp Change: NJM4580 OP275GPZ IMPORTANT NOTICE 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. AKEMD assumes no liability for infringement of any patent, intellectual property, or other rights 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. AKEMD products are neither intended nor authorized for use as critical componentsNote1) in any safety, life support, or other hazard related device or systemNote2), and AKEMD assumes no responsibility for such use, except for the use approved with the express written consent by Representative Director of AKEMD. As used here: Note1) 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. Note2) 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. It is the responsibility of the buyer or distributor of AKEMD products, who distributes, disposes of, or otherwise places the product with a third party, to notify such third 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 AKEMD harmless from any and all claims arising from the use of said product in the absence of such notification. <KM084901> -38- 2007/07 R6 10k CDTO R2 470 R3 470 R5 470 CSN CCLK CDTI CDTO 1 19 R1251 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 18 17 16 15 14 13 12 11 AVDD1 C1 10u CSN CCLK CDTI C4 0.1u G1 G2 74HCT541 R9 100 R11 100 R13 100 +12V C2 2.2u C3 22u C5 0.1u U2A 8 10k U1 A1 A2 A3 A4 A5 A6 A7 A8 + R4 2 3 4 5 6 7 8 9 1 R7 330 1 R10 330 + OP275GPZ 3 - 2 J1 RIN R8 (open) 4 PORT1 10 9 8 7 6 10k 2 + D 1 2 3 4 5 R1 3 DZF1 L5V 4 + 5 -12V D uP-I/F U3 SMUTE 100 LRCK TST2 R20 100 SDTI1 ROUT1 ROUT1 SDTI2 R22 100 SDTI2 LOUT1 LOUT1 SDTI3 R23 100 SDTI3 ROUT2 ROUT2 4529_SDTO R25 100 SDTO LOUT2 LOUT2 SDTI4 R26 100 DAUX ROUT3 ROUT3 DFS0 LOUT3 LOUT3 + 1 1 (short) 2 1 AVDD2 + ROUT4 LOUT4 CAD0 CAD1 TST1 PDN 2 1 DZF2/OVF 8 + 6 - ROUT2 5 + ROUT3 6 - R37 10k U6B R34 OP275GPZ 220 7 5 + J5 ROUT3 -12V 4 2 - -12V 8 3 + 2 - R54 10k R57 4.7k 330p C27 R61 4.7K R58 4.7k 2 - R48 10k J10 LOUT3 U7A R47 OP275GPZ 220 1 -12V A R62 4.7K R56 4.7K R59 4.7k R55 4.7k Title A3 Date: 4 LOUT4 -12V Size 5 J7 330p C25 330p C28 R60 4.7K 8 + U6A R53 OP275GPZ 220 1 3 + LOUT4 +12V C24 22u LOUT2 LOUT3 -12V C26 330p A J9 +12V C21 22u R44 4.7k R39 4.7k 4 R52 10k U5A R51 OP275GPZ 220 1 + 8 3 + 4 2 - R50 10k LOUT2 R46 4.7K +12V C23 22u J8 LOUT1 R42 4.7k R40 4.7K 4 R45 4.7K + 8 + LOUT1 B 330p C19 +12V U4A R49 OP275GPZ 220 1 ROUT4 330p C17 -12V R41 4.7k 3 + J3 -12V 330p C20 C22 22u 6 - R32 10k U7B R31 OP275GPZ 220 7 4 -12V 4 U5B R36 OP275GPZ 220 7 8 8 5 + R38 10k 330p C18 R43 4.7K AVDD2 DZF2/OVF TR2 RN1202 (10k,10k) 4 ROUT1 ROUT2 LE2 +12V ROUT4 +12V C15 22u J6 4 6 - R35 10k +12V C16 22u J4 C C12 10u + 8 + 5 + ROUT1 U4B R33 OP275GPZ 220 7 DZF1 PDN 10u R30 7.5 + +12V C14 22u AVDD2 TR1 RN1202 (10k,10k) 3 R29 100 C11 0.1u C13 22u B R16 (open) + 2 AVDD1 DVSS DVDD DZFE C9 0.1u C10 + 10u 6 J2 LIN LE1 R28 1k +3.3V L3 3 DZF1 ROUT4 LOUT4 L2 R24 1k L5V 10u C8 47u - 2 L1 2 TVDD AK4628A SDTI4 3 8 VCOM AVDD VREFH DZF1 AVSS R19 SDTI1 OUT OP275GPZ 5 NC 1 C7 0.1u P/S 4112A_LRCK GND IN MCLK BICK 2 +12V + -12V 100 T1 NJM78M05FA 7 LIN R18 DFS_4529 U2B R17 330 RIN 4112A_BICK C 1 DZF2/OVF DZF2/OVF R15 330 4 I2C DIF0/CSN SDOS DIF1/SCL/CCLK TDM0 100 LOOP0/SDA/CDTI R14 4112A_MCKO1 +12V C6 22u 3 2 AKD4628A-B Document Number Rev AK4628A Monday, June 11, 2007 Sheet 1 1 1 of 3 5 4 3 2 1 JP1 GND D D T2 DA02-F R63 TX TX 1 DVDD CM0/CDTO 28 CDTO 2 DVSS CM1/CDTI 27 CDTI 3 TVDD OCKS1/CCLK 26 CCLK 4 V/TX OCKS0/CSN 25 CSN 2 U8 240 5 XTI MCKO1 24 4112A_MCKO1 1 R64 150 6 XTO MCKO2 23 4112A_MCKO2 7 PDN DAUX 22 4529_SDTO 8 R BICK 21 4112A_BICK SDTO 20 LRCK 19 ERF 18 FS96 17 P/SN 16 +3.3V C29 10u 1:1 C31 10u + C30 0.1u C32 0.1u + J11 (TX) L5V V/TX X1 5p C3311.2896MHz L5V C 5p C C34 PDN U9A 1 74HCT14 R66 1 L5V 18k +3.3V L4 10u 5 PORT2 6 GND VCC GND 5 OUT 4 3 2 1 OPT 2 6 C37 0.1u + C38 10u TORX176 R69 9 C35 + 10u C36 0.1u JP2 OPT/COAX 11 COAX 12 470 13 +3.3V B J12 COAX D1 C39 0.1u 1S1588 10 14 AVDD AVSS RX1 RX2/DIF0 RX3/DIF1 RX4/DIF2 AUTO 4112A_SDTO 4112A_LRCK U9C 5 15 V/TX 2 1k ERF R67 LE4 1k FS96 R68 LE5 1k AUTO R70 LE6 1k V 6 74HCT14 V/TX JP3 LE3 4 74HCT14 B 3 V 1 TX R71 75 U9B 3 R65 2 U9D 9 8 74HCT14 TX AK4112B R72 47k T3 A OUT 2 C40 47u GND LP2950A 1 +3.3V + IN 3 L5V C41 A 0.1u Title Size A3 Date: 5 4 3 2 AKD4628A-B Document Number Rev AK4112B Monday, June 11, 2007 Sheet 1 1 2 of 3 5 4 3 2 1 L5V L5V PORT3 5 IN 4 3 VCC 2 IF 1 6 6 GND TOTX176(ADC) 5 D R73 1k 1 2 3 4 5 6 L5V C42 0.1u SW2 FS2 FS3 1 2 3 4 5 6 7 8 9 10 11 12 V1 U1 TRANS DIF2 RESETN DIF1 MCLK DIF0 SDTI TXP BICK TXN LRCK DVSS FS0/CSN DVDD FS1/CDTI CKS1 FS2/CCLK CKS0 FS3/CDTO BLS C1 ANS 24 23 22 21 20 19 18 17 16 15 14 13 L5V DIF0 CKS1 C48 0.1u + V PDN 4112A_MCKO1 4529_SDTO 4112A_BICK 4112A_LRCK 6 5 4 3 2 1 R74 10k D U9F 13 H MDOE RP1 U10 D2 1S1588 12 11 10 9 8 7 L 12 11 74HCT14 U9E 10 PDN 74HCT14 C43 0.1u SW1 PDN DFS_4529 V FS3 FS2 CKS1 DIF0 47k C49 10u L5V AK4103A C C -12V for OP275GPZ x5 R76 100 2 R77 100 SDTI1 SDTI2 SDTI3 SDTI4 AC3 DSP C50 47u + 4112A_MCKO2 L5 1 -12V (short) + R80 100 PORT4 10MCKO2 9 GND 8 SDTI1 7 SDTI2 6 SDTI3 C51 0.1u DSP + R79 100 4112A_LRCK 1 2 3 4 5 C52 10u C53 0.1u + 4112A_BICK MCKO1 BICK LRCK SDTO SDTI4 C54 10u C55 0.1u + R78 100 C56 10u C57 0.1u + 4112A_MCKO1 C58 10u C59 0.1u C60 10u DSP DSP JP6 SDTI4 4112A JP7 SDTI1 JP4 SDTI2 4112A JP5 SDTI3 +12V 4112A 2 4112A C61 47u R81 100 4112A_SDTO for OP275GPZ x5 L6 1 +12V + (short) + 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 B B for 74HCT14, 74HCT541 L5V C72 0.1u C73 0.1u A A Title Size AKD4628A-B Document Number A3 Date: 5 4 3 2 Monday, June 11, 2007 Rev Interface Sheet 1 1 3 of 3