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asahi kasei [ak d4628] < km069700 > 2002/9 - 1 - general description the AKD4628 is an evaluation board for the ak4628, a single chip codec that includes two channels of adc and eight channels of dac . the AKD4628 also has the digital audio interface and can achi eve the interface with digital audio systems via opt - connector or bnc connector. n ordering guide AKD4628 --- evaluation board for ak4628 (cable for connecting with printer port of ibm - at compatible pc and control software are packed with this.) t his control software can ? t operate on windows nt. function o on - board analog input buffer circuit o compatible with 2 types of interface - dit(ak4103)/dir(ak4112b) with optical output/input and bnc input - direct interface with ac3 decoder by 10pin hea der o 10pin header for serial control interface input buffer lin rin lout1 rout1 lout2 rout2 lout3 rout3 gnd ak4628 ak4103(dit) ak4112b(di r) 10pin header 10pin header control data bnc in opt in opt out ac3 - 15v +15v output buffer regulator lout4 rout4 fig 1 . AKD4628 block diagram * circuit diagram and pcb layout are attached at the end of this manual. evaluation board rev.b for ak4628 ak d4628
asahi kasei [ak d4628] < km069700 > 2002/9 - 2 - port1 up-i/f 1 2 9 10 csn cclk cdti cdto n operation sequence (1) set up the power supp ly 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 re gulated to +5v and +3.3v by regulators(t1,t2). +5v is supplied to digital interface, ak4628 and tvdd of ak4112b. +3.3v is supplied to avdd and dvdd of ak4112b and tvdd of ak4628. (2) set up the evaluation mode and jumper pins. (see p.6.) (3) power on. the ak4628, ak4112b and ak4103 should be reset once bringing pdn(sw1) ? l ? upon power - up. (4) set up software. the control mode of ak4628 and ak4112b is fixed to ? serial ? . the AKD4628 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 AKD4628. 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. port1 pin l ayout
asahi kasei [ak d4628] < km069700 > 2002/9 - 3 - n 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. ? 4112a ? should be selected on jp4,5,6 and 7. 3) loopback mode clock mode of the ak4112b should be set to pll mode or x ? tal mode. ? 4112a ? 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 ak4112b clock set - up jp4,5,6,7 used i/f adc cm1= ? 0 ? , cm0 =? 0 ? (pll mode) or cm1= ? 0 ? , cm0 =? 1 ? (x ? tal mode) don ? t care totx176 optical output dac cm1= ? 0 ? , cm0 =? 0 ? (pll mode) ? 4112a ? loopback cm1= ? 0 ? , cm0 =? 1 ? (x ? tal mode) ? 4112a ? using dsp cm1= ? 0 ? , cm0 =? 0 ? (pll mode) ? dsp ? port5(10 - pin header ) (note.)1. software ? 4112.exe ? packed with the AKD4628 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 n dip switch se t up. (see the datasheet of ak4628 and ak4103) 1. dfs_4628(sw2 - 1) set up of ak4628 sampling speed(fs). dfs_4628 sampling speed (fs) off normal speed mode 32khz ~ 48khz on double speed mode 64khz ~ 96khz default table 3. set up of sampling speed (fs) 2. v(sw 2 - 2) set up of for ak4103validity detect. v validity off valid on invalid default table 4. set up of validity 3. fs3(sw2 - 3) fs2(sw2 - 4) set up of ak4103 sampling frequency setting. fs3 fs2 sampling frequency setting off off 44.1khz off on 48khz on off reserved on on 32khz default table 5. set up of sampling frequency setting 4. cks0(sw2 - 5) set up of ak4103 system clock . cks1 mclk fs off 256fs 28k - 108khz on 512fs 28k - 54kz default table 6.set up of system clock
asahi kasei [ak d4628] < km069700 > 2002/9 - 4 - 5. dif0(sw2 - 6) set up of ak4 103 audio serial interface format. dif0 audio serial interface format lrck bick off 24bit, left justified h/l 48fs - 128fs on 24bit, i 2 s l/h 48fs - 128fs default table 7. set up of audio serial interface format n jumper pin set up [jp1] (gnd) - -- analog gnd and digital gnd [jp4,5,6,7] (sdti1,2,3,4) --- ak4628 sdti1,2,3,4 input source select : serial data is input from dsp via port4. <4112a> : serial data is input from ak4112b sdto. [jp3] (v/tx) --- ak4112b v/tx output select . : validity . : transmit channel (through data) [jp2](opt/coax) --- the source of the biphase signal input to the ak4112b : optical input to rx1 of ak4112b : bnc input to rx1 of ak4112b n the function of the toggle sw. [sw1] : resets the ak4628, ak4112b and ak4103. keep ? h ? during normal operation. n the indication content for led. [le1] (dzf1) : zero detection [le2] (dzf2_ovf) : zero detection or overflow detection [le3] (erf) : ak4112b unlock and parity error output. [le4] (fs96) : ak4112b 96khz sampling detect. [le5] (auto) : ak4112b ac - 3/mpeg detect. [le6] (v) : ak4112b validity detect
asahi kasei [ak d4628] < km069700 > 2002/9 - 5 - n analog input cir cuit ak4628 signal 22u 32 rin same circuit 3.0vpp 4580 - + op - amp circuit 31 lin 6.0vpp 330 330 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.
asahi kasei [ak d4628] < km069700 > 2002/9 - 6 - n analog output circuit ak4628 22u signal 6.0vpp 28 27 26 25 rout1 same circuit 3.0vpp njm4580 + - lout1 rout2 lout2 rout3 lout3 24 23 same circuit same circuit same circuit same circuit 10k 4.7 k 4.7k 330p 220 rout4 lout4 22 21 same circuit same circuit 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 ak4628. frequency response of 1st - order hpf | amplitude | 2 = 1/{1+(fc/f) 2 }; fc=1/2 p rc= 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.
asahi kasei [ak d4628] < km069700 > 2002/9 - 7 - c) frequency response of filter frequency response of the 1st - order filter | amplitude | 2 = k*{1+(f/fc 2 ) 2 } /{1+(f/fc 1 ) 2 }; k = 1+ 4.7k/4.7k = 2, fc 1 = 1/2 p rc = 102.7khz@r=4.7k,c=330p, fc 2 = k*fc 1 = 205.3khz frequency response referenced to output level of this board is as following table: fin dc 20khz 40khz 80khz 145khz frequency response 0db - 0.121db - 0.452db - 1.448db - 3db - 6db if the frequency response of filter influences the system, 1st - order lpf is also available as the following figure: ak4628 22u signal 6.0vpp 28 27 26 25 rout1 same circuit 3.0vpp 4580 + - lout 1 rout2 lout2 rout3 lout3 24 23 same circuit same circuit same circuit same circuit 10k 4.7k 4.7k 3300p 220 lpf rout4 lout4 22 21 same circuit same circuit example of lpf with flat response. frequency response of this lpf | amplitude | 2 = 1/{1+(f/fc) 2 }; fc = 1/2 p rc = 219khz@r=220,c=3300p frequency response referenced to output level of this board is as following table: fin dc 20khz 40khz 80khz 219khz frequency response 0db - 0.036db - 0.142db - 0.543db - 3db - db the total frequency response of this board is sum of the external filter and internal lpf of ak4628. these filters are effective to attenuate the high frequency noise since some measurement units is sensitive for out - of - band noise.
asahi kasei [ak d4628] < km069700 > 2002/9 - 8 - ak4 628 control program operation manual n set - u p of evaluation board and control software this evaluation board does not correspond to i 2 c control. 1. set up the AKD4628 according to above mentioned setting. 2. connect ibm - at compatible pc with AKD4628 by 10 - line type flat cable (packed with AKD4628). take care of the direction of 10pin header. (please install the driver in the cd - rom - 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 window s95/98/me, this installation is not needed. this control software does not operate on windows nt.) 3. insert the cd - rom - disk labeled ? AKD4628 control program ver 1.0 ? into the cd - rom - disk drive. 4. access the cd - rom - disk drive and double - click the icon o f ? AKD4628.exe ? to set up the control program. 5. then please evaluate according to the followings. attention: please use fixed ? cad1 - 0=01 ? . n operation 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. n explanation of each buttons 1. [port setup] : set up the printer port. 2. [write default] : initialize the register of ak4628. 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 [ak d4628] < km069700 > 2002/9 - 9 - n explanation of each dialog 1. [function1 dialog] : dialog to write data by keyboard operation address box: input r egister address in 2 figures of hexadecimal. data box: input r egister data in 2 figures of hexadecimal. if you want to write the input data to ak4628, 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 an d 0ch. address box: input r egister 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 ak4628 by this interval. ste p 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 ak4628, 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 ak4628, click ? ok ? button. if not, click ? cancel ? button. n 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. n attention 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 yo u 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 [ak d4628] < km069700 > 2002/9 - 10 - ak4112b control program ver 1.0 operation manual n set - up of evaluation board and control software 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 does not correspond to i 2 c control. 1. set up th e AKD4628 according to above mentioned setting. 2. connect ibm - at compatible pc with AKD4628 by 10 - line type flat cable (packed with AKD4628). take care of the direction of 10pin header. (please install the driver in the cd - rom - disk when this control sof tware 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 - disk labeled ? AKD4628 control program ver 1.0 ? into the cd - rom - disk drive. 4. access the cd - rom - disk drive and double - click the icon of ? akd4112.exe ? to set up the control program. 5. then please evaluate according to the follows. n oper ation 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. n explanation of each buttons 1. [port setup] : set up the printer port. 2. [write default] : initialize the register of ak4112. 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 ak4112, click ? ok ? button. if not, click ? cancel ? button. n 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 [ak d4628] < km069700 > 2002/9 - 11 - measurement results 1) adc part [measurement condition] measurement unit : audi o precision, system two, cascade mclk : 256fs bick : 64fs fs : 48khz, 96khz bw : 10hz ~ 20khz(fs=48khz), 10hz ~ 48khz(fs=96khz) bit : 24bit power supply : avdd=dvdd=5v, tvdd=3.3v interface : dit(ak4103) temperature : r oom fs=48khz parameter input signal measurement filter lch rch s/(n+d) 1khz, - 0.5db 20klpf 95.4db 95.3db 20klpf 99.1db 99.3db dr 1khz, - 60db 20klpf+a - weighted 101.8db 102.2db 20klpf 99.5db 99.4db s/n no signal 20klpf+a - weighted 102.5d b 102.5db fs=96khz parameter input signal measurement filter lch rch s/(n+d) 1khz, - 0.5db fs/2 93.7db 93.7db fs/2 97.6db 97.6db dr 1khz, - 60db 20khz+a - weighted 104.1db 104.1db fs/2 97.7db 97.7db s/n no signal 20khz+a - weighted 104.3db 104.4db
asahi kasei [ak d4628] < km069700 > 2002/9 - 12 - 2) dac part [measurement condition] measurement unit : audio precision, system two, cascade(fs=48khz, 96khz) mclk : 256fs bick : 64fs fs : 48khz, 96khz bw : 10hz ~ 22khz (fs=48khz), 10hz ~ 40khz (fs=96khz) bit : 24 bit power supply : avdd=dvdd=5v, tvdd=3.3v interface : dir(ak4112b) temperature : room fs=48khz parameter input signal measurement filter lch rch s/(n+d) 1khz, - 0.5db 20klpf 97.7db 97.4db 20klpf 102.6db 102.6db dr 1khz, - 60db 22klpf+a - weighted 105.7db 105.5db 20klpf 102.5db 102.5db s/n no signal 22klpf+a - weighted 105.9db 105.9db fs=96khz parameter input signal measurement filter lch rch s/(n+d) 1khz, - 0.5db 40khzlpf 95.6db 95.6db 40khzlpf 100.6db 100.7db dr 1khz, - 60db 2 2khz+a - weighted 105.5db 105.5db 40khz 102.8db 102.5db s/n no signal 22khz+a - weighted 105.9db 105.9db
asahi kasei [ak d4628] < km069700 > 2002/9 - 13 - 1.adc (adc fs=48khz) akm ak4628 adc fft (fs=48khz; fin=1khz, 0dbfs input) fft points=16384, avg.8 window=equiripple 20 20k 50 100 200 500 1k 2k 5k 10k hz -180 +0 -160 -140 -120 -100 -80 -60 -40 -20 d b f s fft (input= - 0.5dbfs, fin=1khz) akm ak4628 adc fft (fs=48khz; fin=1khz,-60dbfs input ) fft points=16384, avg.8, window=equiripple 20 20k 50 100 200 500 1k 2k 5k 10k hz -180 +0 -160 -140 -120 -100 -80 -60 -40 -20 d b f s fft (input= - 60dbfs, fin=1khz)
asahi kasei [ak d4628] < km069700 > 2002/9 - 14 - (adc fs=48khz) akm ak4628 adc fft (fs=48khz; no signal input) fft points=16384, avg.8, window=equripple 20 20k 50 100 200 500 1k 2k 5k 10k hz -180 +0 -160 -140 -120 -100 -80 -60 -40 -20 d b f s fft (noise floor)
asahi kasei [ak d4628] < km069700 > 2002/9 - 15 - (adc fs=48khz) akm ak4628 adc thd+n vs. input level (fs=48khz; fin=1khz ) -140 +0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 dbr -120 -70 -115 -110 -105 -100 -95 -90 -85 -80 -75 d b f s thd + n vs amplitude (fin=1khz) akm ak4628 adc thd+n vs. input frequency (fs=48khz;-0.5dbfs input) 20 20k 50 100 200 500 1k 2k 5k 10k hz -120 -70 -115 -110 -105 -100 -95 -90 -85 -80 -75 d b f s thd + n vs input frequency (input= - 0.5dbfs)
asahi kasei [ak d4628] < km069700 > 2002/9 - 16 - (adc fs=48khz) akm ak4628 adc linearity (fs=48khz; fin=1khz) -140 +0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 dbr -140 +0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d b f s linearity(fin=1khz) akm ak4628 adc frequency response (fs=48khz; -0.5dbfs input) 20 20k 50 100 200 500 1k 2k 5k 10k hz -1 +0 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 d b f s frequency response(input level= - 0.5dbfs) (including input rc filter)
asahi kasei [ak d4628] < km069700 > 2002/9 - 17 - (adc fs=48khz) akm ak4628 adc crosstalk (fs=48khz; -0.5dbfs input) upper@1khz; lch--->rch, lower@1khz; rch--->lch -150 -80 -145 -140 -135 -130 -125 -120 -115 -110 -105 -100 -95 -90 -85 d b 20 20k 50 100 200 500 1k 2k 5k 10k hz crosstalk (upper@1k = rch, lower@1k = lch)
asahi kasei [ak d4628] < km069700 > 2002/9 - 18 - (adc fs=96khz) akm ak4628 adc fft (fs=96khz; fin=1khz, -0.5dbfs input) fft points=16384, avg.8, window=equiripple 40 40k 50 100 200 500 1k 2k 5k 10k 20k hz -180 +0 -160 -140 -120 -100 -80 -60 -40 -20 d b f s fft(input= - 0.5dbfs, fin=1khz) akm ak4628 adc fft (fs=96khz; fin=1khz, -60dbfs input) fft stpeps=16384, avg.8, window=equiripple 40 40k 50 100 200 500 1k 2k 5k 10k 20k hz -180 +0 -160 -140 -120 -100 -80 -60 -40 -20 d b f s fft(input= - 60dbfs, fin=1khz)
asahi kasei [ak d4628] < km069700 > 2002/9 - 19 - (adc fs=96khz) akm ak4628 adc fft (fs=96khz; no signal input) fft stpeps=16384, avg.8, window=equiripple 40 40k 50 100 200 500 1k 2k 5k 10k 20k hz -180 +0 -160 -140 -120 -100 -80 -60 -40 -20 d b f s fft(noise floor)
asahi kasei [ak d4628] < km069700 > 2002/9 - 20 - (adc fs=96khz) akm ak4628 adc thd+n vs. input level (fs=96khz; fin=1khz) -140 +0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 dbr -120 -60 -115 -110 -105 -100 -95 -90 -85 -80 -75 -70 -65 d b f s thd + n vs amplitude(fin=1khz) akm ak4628 adc thd+n vs. input frequency (fs=96khz; -0.5dbfs input) 40 40k 50 100 200 500 1k 2k 5k 10k 20k hz -120 -80 -117.5 -115 -112.5 -110 -107.5 -105 -102.5 -100 -97.5 -95 -92.5 -90 -87.5 -85 -82.5 d b f s thd + n vs input frequency(input level= - 0.5dbfs)
asahi kasei [ak d4628] < km069700 > 2002/9 - 21 - (adc fs=96khz) akm ak4628 adc linerity (fs=96khz; fin=1khz) -140 +0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 dbr -140 +0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d b f s linearity(fin=1khz) akm ak4628 adc frequency response (fs=96khz; -0.5dbfs input) 40 40k 50 100 200 500 1k 2k 5k 10k 20k hz -1 +0 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 d b f s frequency response(input level= - 0.5dbfs) (including input rc filter)
asahi kasei [ak d4628] < km069700 > 2002/9 - 22 - (adc fs=96khz) akm ak4628 adc crosstalk (fs=96khz; -0.5dbfs input) upper@1khz; lch--->rch, lower@1khz; rch--->lch 40 40k 50 100 200 500 1k 2k 5k 10k 20k hz -150 -80 -145 -140 -135 -130 -125 -120 -115 -110 -105 -100 -95 -90 -85 d b crosstalk (upper = rch, lower = lch)
asahi kasei [ak d4628] < km069700 > 2002/9 - 23 - 2.dac (dac fs=48khz) akm ak4628 dac fft (fs=48khz, fin=1khz, 0dbfs input) 20 20k 50 100 200 500 1k 2k 5k 10k hz -180 +0 -160 -140 -120 -100 -80 -60 -40 -20 d b r a fft (input=0dbfs, fin=1khz) akm ak4628 dac fft (fs=48khz; fin=1khz, -60dbfs input) fft points=16384, avg.8, window=equiripple -180 +0 -160 -140 -120 -100 -80 -60 -40 -20 d b r a 20 20k 50 100 200 500 1k 2k 5k 10k hz fft (input= - 60dbfs, fin=1khz)
asahi kasei [ak d4628] < km069700 > 2002/9 - 24 - (dac fs=48khz) akm ak4628 dac fft (no data input) fft points=16384, avg.8, window=equiripple -180 +0 -160 -140 -120 -100 -80 -60 -40 -20 d b r a 20 20k 50 100 200 500 1k 2k 5k 10k hz fft (noise floor) akm ak4628 dac fft (outband noise) fft points=16384, avg.8, window=equiripple -180 +0 -160 -140 -120 -100 -80 -60 -40 -20 d b r a 100 100k 200 500 1k 2k 5k 10k 20k 50k hz ff t (outband noise)
asahi kasei [ak d4628] < km069700 > 2002/9 - 25 - (dac fs=48khz) akm ak4628 dac thd+n vs.input level (fs=48khz, fin=1khz) -140 +0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 dbfs -120 -80 -117.5 -115 -112.5 -110 -107.5 -105 -102.5 -100 -97.5 -95 -92.5 -90 -87.5 -85 -82.5 d b r a thd + n vs amplitude(fin=1khz) akm ak4628 dac thd+n vs. fin (fs=48khz, 0dbfs input) 20 20k 50 100 200 500 1k 2k 5k 10k hz -120 -80 -117.5 -115 -112.5 -110 -107.5 -105 -102.5 -100 -97.5 -95 -92.5 -90 -87.5 -85 -82.5 d b r a thd + n vs input frequency (input=0dbfs)
asahi kasei [ak d4628] < km069700 > 2002/9 - 26 - (dac fs=48khz) akm ak4628 dac linearity (fs=48khz, fin=1khz) -140 +0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 dbfs -140 +0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d b r a linearity(fin=1khz) akm ak4628 dac frequncey response (fs=48khz, 0dbfs input) 2k 20k 4k 6k 8k 10k 12k 14k 16k 18k hz -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 frequency response(input level=0dbfs) (including external rc filter )
asahi kasei [ak d4628] < km069700 > 2002/9 - 27 - (dac fs=48khz) akm ak4628 dac crosstalk (fs=48khz, 0dbfs input) upper@1khz; lch--->rch, lower@1khz; rch--->lch 20 20k 50 100 200 500 1k 2k 5k 10k hz -120 -80 -117.5 -115 -112.5 -110 -107.5 -105 -102.5 -100 -97.5 -95 -92.5 -90 -87.5 -85 -82.5 d b crosstalk(upp er=rch, lower=lch)
asahi kasei [ak d4628] < km069700 > 2002/9 - 28 - (dac fs=96khz) akm ak4628 dac fft (fs=96khz; fin=1khz -0.5dbfs input; notch; on) 40 40k 50 100 200 500 1k 2k 5k 10k 20k hz -180 +0 -170 -160 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d b r a fft (input=0dbfs, fin=1khz, notch) akm ak4628 dac fft (fs=96khz; fin=1khz, -60dbfs input) 40 40k 50 100 200 500 1k 2k 5k 10k 20k hz -180 +0 -170 -160 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d b r a fft (input= - 60dbfs,fin=1khz)
asahi kasei [AKD4628] 2002/9 - 29 - (dac fs=96khz) akm ak4628 dac fft (fs=96khz; no data input) 40 40k 50 100 200 500 1k 2k 5k 10k 20k hz -180 +0 -170 -160 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d b r a fft (noise floor) akm ak4628 dac fft (out of band noise ) 100 100k 200 500 1k 2k 5k 10k 20k 50k hz -180 +0 -170 -160 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d b r a fft (outband noise)
asahi kasei [AKD4628] 2002/9 - 30 - (dac fs=96khz) akm ak4628 dac thd+n vs. input level (fs=96khz; fin=1khz) -140 +0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 dbfs -120 -80 -117.5 -115 -112.5 -110 -107.5 -105 -102.5 -100 -97.5 -95 -92.5 -90 -87.5 -85 -82.5 d b r a thd + n vs amplitude (fin=1khz) akm ak4628 dac thd+n vs. input frequency (fs=96khz; -0.5dbfs input) 40 40k 50 100 200 500 1k 2k 5k 10k 20k hz -120 -80 -117.5 -115 -112.5 -110 -107.5 -105 -102.5 -100 -97.5 -95 -92.5 -90 -87.5 -85 -82.5 d b r a thd + n vs input frequency (input=0 dbfs)
asahi kasei [AKD4628] 2002/9 - 31 - (dac fs=96khz) akm ak4628 dac linearity (fs=96khz; fin=1khz) -140 +0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 dbfs -140 +0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d b r a linearity(fin=1khz) akm ak4628 dac frequency response (fs=96khz; 0dbfs input) -1 +0.5 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 +0 +0.1 +0.2 +0.3 +0.4 d b r a 2.5k 40k 5k 7.5k 10k 12.5k 15k 17.5k 20k 22.5k 25k 27.5k 30k 32.5k 35k 37.5k hz frequency response(input level=0dbfs) (including external rc filter)
asahi kasei [AKD4628] 2002/9 - 32 - (dac fs=96khz) akm ak4628 dac crosstalk (fs=96khz; 0dbfs input) upper@1khz; lch--->rch, lower@1khz; rch--->lch 40 40k 50 100 200 500 1k 2k 5k 10k 20k hz -120 -80 -117.5 -115 -112.5 -110 -107.5 -105 -102.5 -100 -97.5 -95 -92.5 -90 -87.5 -85 -82.5 d b crosstalk (upper=rch, lower=lch)
asahi kasei [AKD4628] 2002/9 - 33 - i m portant notice these products and their specificat ions are subject to change without notice. before considering any use or application, consult the asahi kasei microsystems co., ltd. (akm) sales office or authorized distributor concerning their current status. akm assumes no liability for infringement of any patent, intellectual property, or other right 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 la w and regulations of the country of export pertaining to customs and tariffs, currency exchange, or strategic materials. akm products are neither intended nor authorized for use as critical components in any safety, life support, or other hazard related device or system, and akm assumes no responsibility relating to any such use, except with the express written consent of the representative director of akm. as used here: (a) a hazard related device or system is one designed or intended for life support o r 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. (b) 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. 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 an d conditions, and the buyer or distributor agrees to assume any and all responsibility and liability for and hold akm harmless from any and all claims arising from the use of said product in the absence of such notification.
5 5 4 4 3 3 2 2 1 1 d d c c b b a a cdti cs n cdto cclk (10k, 10k) (10k, 10k) ak4628 b akd46 28 a3 1 3 thursday, september 26, 2002 title si ze document numbe r re v date: shee t of avdd 1 452 9_sdto sdti3 sdti1 sdti2 4112a_ lrck 4112a_mck o1 4112a_ bick avd d2 avdd 1 rout1 csn cclk l5v l5 v cdto +12 v lo ut1 +12 v +12 v lo ut3 +12 v +3.3v -12 v cdti +12 v rout2 lout2 +12 v +12 v rout3 +12v lo ut4 +12 v rout4 lout1 lout2 lout3 rout2 rout3 -12v -12 v -12 v -12v -12 v -12v -12 v +12 v -12 v +12 v -12 v pdn dzf 1 dzf1 avdd 2 dzf2 /ovf avdd 2 lo ut4 rout4 sdti4 rout1 dzf2 /ovf dfs_4 529 r2 9 100 c1 7 33 0p r4 2 4.7k r25 10 0 r3 7 10 k j3 rout4 r45 4. 7k r2 8 1k r9 100 + - u6b njm4580 5 6 7 8 4 r30 5.1 tr2 rn 1202 1 3 2 r13 100 r4 4 4.7k r48 10k c9 0. 1u c7 0. 1u u3 ak462 8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 sdos i2c smute bick lrck sdti1 sdti2 sdti3 sdto daux dfs0 sdti4 dzfe tvdd dvdd dvss pdn tst1 cad1 cad0 lout4 rout4 lout3 rout3 lout2 rout2 lout1 rout1 tst2 nc lin1 rin1 dzf2/ovf vcom vrefh avdd avss dzf1 mclk p/s dif0/csn dif1/scl/cclk loop0/sda/cdti tdm0 r3 47 0 r46 4. 7k j7 lo ut4 + c6 22 u r5 1 220 le2 dzf2 /ovf r11 100 r17 33 0 + - u7 a njm4580 3 2 1 8 4 r49 22 0 j9 lo ut2 + c22 22 u j8 lo ut1 r2 47 0 r52 10k r5 0 10 k c11 0.1 u + - u5 a njm4580 3 2 1 8 4 + c23 22 u l3 10 u 1 2 + - u4a njm4580 3 2 1 8 4 r58 4. 7k r4 10 k r41 4. 7k r5 7 4.7k + - u4 b njm4580 5 6 7 8 4 r60 4. 7k c1 8 33 0p r6 10 k c4 0.1 u + - u2 a njm4580 3 2 1 8 4 r14 10 0 + c16 22 u c2 6 33 0p r20 10 0 j1 rin r18 10 0 r31 22 0 r8 (op en) r19 10 0 c20 33 0p r3 2 10k r7 33 0 u1 74h ct541 2 3 4 5 6 7 8 9 1 19 18 17 16 15 14 13 12 11 a1 a2 a3 a4 a5 a6 a7 a8 g1 g2 y1 y2 y3 y4 y5 y6 y7 y8 le1 dzf1 c19 330 p + c2 4 22u l2 (short ) 1 2 + - u7b njm458 0 5 6 7 8 4 r10 33 0 r22 10 0 r24 1k + c2 2.2 u c5 0.1 u c27 33 0p l1 10 u 1 2 r39 4. 7k + c3 22 u tr1 rn 1202 1 3 2 r6 1 4.7k r23 10 0 + c8 47 u c2 8 33 0p + c15 22 u r26 10 0 r4 7 220 r5 3 220 r3 3 220 t1 njm78m0 5fa 3 2 1 out gnd in r55 4. 7k j1 0 lo ut3 + c1 10u j2 li n + c2 1 22 u + c1 0 10 u r4 3 4.7k r36 22 0 + c1 4 22u r54 10k + c1 3 22u j6 rout2 port1 up-i /f 1 2 3 4 5 6 7 8 9 10 r5 6 4.7k + - u6a njm4580 3 2 1 8 4 j4 rout1 r16 (op en) r5 47 0 r1 10 k r15 33 0 r34 22 0 r40 4. 7k r35 10k r59 4. 7k r3 8 10 k + c12 10 u j5 rout3 c2 5 33 0p r6 2 4.7k + - u2 b njm4580 5 6 7 8 4 + - u5b njm4580 5 6 7 8 4 r1 2 51
5 5 4 4 3 3 2 2 1 1 d d c c b b a a tx tx v v/tx da 02-f coa x opt ak4 112 b akd462 8 a3 2 3 thursday, september 26, 2002 title si ze document number re v date: shee t of tx 4112a_ bick 4112a_sd to 4112a_l rck v/t x +3.3 v l5v cdti cclk csn tx 4112a_mck o1 l5v +3 .3v l5 v l5v 4112a_mck o2 +3.3v cdto +3.3v v/t x 452 9_sdto pdn r72 47k u9a 74hct14 1 2 r68 1k x1 11.2896 mhz 1 2 le5 au to r6 9 470 jp1 gnd + c2 9 10u c36 0. 1u c33 5p c30 0. 1u jp3 1 2 3 + c35 10 u u9 b 74hct14 3 4 j1 2 coa x c3 7 0. 1u l4 10u 1 2 u8 ak411 2a 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 dvdd dvss tvdd v/tx xti xto pdn r avdd avss rx1 rx2/dif0 rx3/dif1 rx4/dif2 auto p/sn fs96 erf lrck sdto bick daux mcko2 mcko1 ocks0/csn ocks1/cclk cm1/cdti cm0/cdto r6 4 150 t2 1: 1 u9c 74hct14 5 6 c39 0.1 u c4 1 0. 1u j1 1 (tx) + c40 47 u port2 to rx176 1 3 4 2 6 5 out vcc gnd gnd 6 5 t3 lp29 50a 1 2 3 out gnd in u9d 74hct14 9 8 le6 v + c3 1 10u r67 1k r70 1k r63 24 0 c32 0. 1u le3 erf le4 fs 96 c34 5p r6 6 18k r65 1k + c38 10 u jp2 op t/coax d1 1s 1588 r7 1 75
5 5 4 4 3 3 2 2 1 1 d d c c b b a a gnd lrck bick sdti2 sdt o mck o1 l sdti1 sdti4 sdti3 for 74 hct14, 74h ct541 h dsp dsp 411 2a 411 2a for njm5532 x 5 for njm5532 x 5 1s15 88 mck o2 411 2a dsp ds p 411 2a interface b akd46 28 a3 3 3 thursday, september 26, 2002 title si ze document numbe r re v date: shee t of sdti3 sdti2 pdn 4112a_mck o1 4112a_ bick 4112a_l rck pdn 4112a_mck o2 l5v l5 v l5 v l5v 452 9_sdto +12v -12v 4112a_mck o1 4112a_ bick 4112a_l rck sdti4 sdti1 cks 1 fs2 fs3 fs3 fs2 cks1 dif0 dfs_45 29 v v 4112a_sd to l5v l5v dif0 +12 v -12v + c6 5 10u d2 jp4 sdti2 l5 (short) 1 2 c48 0.1 u jp5 sdti3 r74 10k jp6 sdti4 l6 (short) 1 2 + c63 10 u port3 totx176( adc) 1 2 3 4 5 6 gnd if vcc in 5 6 c62 0.1 u port4 ac 3 1 2 3 4 5 6 7 8 9 10 sw 1 pdn r81 10 0 + c71 10 u r77 10 0 c7 0 0. 1u r76 10 0 r78 10 0 c51 0.1 u c43 0. 1u + c5 2 10u c73 0. 1u + c54 10 u + c6 9 10u c5 3 0. 1u c68 0.1 u r79 10 0 + c56 10 u r80 10 0 c55 0.1 u jp7 sdti1 u9f 74hct14 13 12 + c6 1 47 u c5 7 0. 1u c42 0.1 u + c5 8 10 u u10 ak410 3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 v1 trans resetn mclk sdti bick lrck fs0/csn fs1/cdti fs2/cclk fs3/cdto c1 ans bls cks0 cks1 dvdd dvss txn txp dif0 dif1 dif2 u1 r73 1k u9e 74hct14 11 10 + c60 10 u c72 0.1 u + c67 10 u c59 0. 1u c66 0. 1u sw 2 mdoe 1 2 3 4 5 6 12 11 10 9 8 7 + c4 9 10u + c5 0 47 u rp1 47 k 6 5 4 3 2 1 c6 4 0. 1u

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