asahi kasei [akd5355] ?06/01 - 1 - general description akd5355 is an evaluation board for the portable digita l audio 16bit a/d converter, ak5355. the akd5355 includes the input circuit and also has a digital inte rface transmitter. further, the akd5355 can evaluate direct interface with akm?s d/a converter evaluation board. ? ordering guide akd5355 --- evaluation board for ak5355 function ? compatible with 2 types of interface - direct interface with akm?s d/a converter evaluation boards - on-board ak4103 as dit which transmits optical output ? bnc connector for an external clock input lin ak4103 clock generator vd va gnd rin ak5355 (dit) opt out 10pin header d/a data figure 1. akd5355 block diagram * circuit diagram and pcb layout are attached at the end of this manual. evaluation board rev.a for ak5355 akd5355
asahi kasei [akd5355] ?06/01 - 2 - ? operation sequence 1) set up the power supply lines. [va] (orange) = 2.1 3.6v : typ. 3.0v, va pin [vd] (orange) = 2.1 va : typ. 3.0v, vd pin [vcc] (red) = 5.0v : for digital logic except the ak5355 [agnd] (black) = 0v : for analog ground (including vss of ak5355) [dgnd] (black) = 0v : for logic ground each supply line should be distri buted from the power supply unit. vd and va must be the same voltage level. 2) set up the evaluation mode, jumper pins and dip switches. (see the followings.) 3) power on. the ak5355 and ak4103 should be reset once bringing sw1 = sw3 = ?l? upon power-up. ? evaluation mode applicable evaluation mode (1) evaluation of a/d using dit (optical link) (2) all interface signals including master clock are fed externally. (3) evaluation of a/d using dit at mclk = 384fs (1) evaluation of a/d using dit (optical link) port1 (dit) is used. on board dit (ak4103) converts a/d data to an audio biphase signal, which is output through optical connector (totx176). it is possible to connect akm?s d/a converter evaluation boards or the digital-amplifier that equips dir input etc. nothing should be connected to port2. dit (ak4103) operates at sw3=?h?. when using an external clock through a bnc connector (j3), select ?ext? on jp4 (clk) and short jp3 (xte). jp3 xte jp4 clk ext xtl jp6 bick jp7 lrck 512fs 256fs 256-64fs 256-32fs 512-64fs 512-32fs (2) all interface signals including master clock are fed externally. all interface signals are provided to the ak5355 thr ough port2. akm?s d/a converter evaluation boards can be also connected to port2. jp3 xte jp4 clk ext xtl jp6 bick jp7 lrck 512fs 256fs 256-64fs 256-32fs 512-64fs 512-32fs
asahi kasei [akd5355] ?06/01 - 3 - (3) evaluation of a/d using dit at mclk=384fs. port1 (dit) is used. on board dit (ak4103) is set to the master mode. the ak4103 provides bick and lrck to the ak5355 from an external master clock (mclk). when using an external clock through a bnc connector (j3), select ?ext? on jp4 (clk) and short jp3 (xte). (refer to a table 1 3 for the set up of the dip switch. the master mode should be selected in table 2.) jp3 xte jp4 clk ext xtl jp6 bick jp7 lrck 512fs 256fs 256-64fs 256-32fs 512-64fs 512-32fs ? jumpers set up 1. jp1 (vd) : vd pin of the ak5355 va : supplied from ?va? connector via 10 ? . vd : supplied from ?vd? connector. 2. jp2 (gnd) : connection between agnd and dgnd. open : both grounds are separated on board. short : both grounds are connected on board. ? dip switch set up [sw2]: set up of ak5355 and ak4103 (refer to the datasheet) no. pin default mode 1 sel l h: input gain +15db l: input gain +0db 2 5355_dif l h:i2s l:16bit left justified 3 4103_dif1 l 4 4103_dif0 l see table 2 5 cks1 l 6 cks0 h see table 3 table 1. set up for ak5355 and ak4103 4103_dif1 4103_dif0 mode clock mode off off 24bit, left justified off on 24bit, i 2 s slave mode on off 24bit, left justified on on 24bit, i 2 s master mode table 2. set up of interface format
asahi kasei [akd5355] ?06/01 - 4 - cks1 cks0 mclk 0 0 no using 0 1 256fs 1 0 384fs 1 1 512fs table 3. set up of cks0 and cks1 ? the function of the toggle sw upper-side is ?h? and lower-side is ?l?. [sw1] (pdn): resets the ak5355. keep ?h? during normal operation. [sw3] (dit): resets the ak4103. keep ?h? during normal operation. ? input circuit + c2 10u j1 lin j2 rin r3 560 lin + c1 10u rin r1 560 figure 2. lin/rin input circuit on board * akm assumes no responsibility for the trouble when using the circuit examples.
asahi kasei [akd5355] ?06/01 - 5 - measurement results [measurement condition] ? measurement unit : audio precision, system two, cascade ? mclk : 256fs ? bclk : 64fs ? fs : 44.1khz ? bit : 16bit ? power supply : va=vd=3.0v ? interface : dit (ak4103) ? temperature : room ? gain=0db (sel=?l?) lin rin filter s/(n+d) (-0.5db) 85.1[db] 85.3[db] 20khzlpf dr 89.4[db] 89.4[db] 20khzlpf (-60db) 91.8[db] 91.9[db] 20khzlpf+a-weighted s/n 89.4[db] 89.4[db] 20khzlpf 91.9[db] 91.9[db] 20khzlpf+a-weighted ? gain=+15db (sel=?h?) lin rin filter s/(n+d) (-0.5db) 81.7[db] 81.3[db] 20khzlpf dr 81.2[db] 81.5[db] 20khzlpf (-60db) 84.3[db] 84.3[db] 20khzlpf+a-weighted s/n 81.5[db] 81.7[db] 20khzlpf 84.4[db] 84.3[db] 20khzlpf+a-weighted
asahi kasei [akd5355] ?06/01 - 6 - ? plot [gain = 0db] akm ak5355 thd + n vs amplitude (fin=1khz, gain=0db) last.at2c -140 +0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 dbr -100 -70 -98 -96 -94 -92 -90 -88 -86 -84 -82 -80 -78 -76 -74 -72 d b f s figure 1. thd+n vs. input level akm ak5355 thd + n vs input frequency (input level=-0.5db, gain=+15db) last.at2c 20 20k 50 100 200 500 1k 2k 5k 10k hz -90 -60 -88 -86 -84 -82 -80 -78 -76 -74 -72 -70 -68 -66 -64 -62 d b f s figure 2. thd+n vs. input frequency
asahi kasei [akd5355] ?06/01 - 7 - akm ak5355 linearity (fin=1khz, gain=0db) last.at2c -140 +0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d b f s -140 +0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 dbr figure 3. linearity akm ak5355 frequency response (input level-0.5db, gain=0db) last.at2c -2 +0 -1.9 -1.8 -1.7 -1.6 -1.5 -1.4 -1.3 -1.2 -1.1 -1 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 d b f s 20 20k 50 100 200 500 1k 2k 5k 10k hz figure 4. frequency response
asahi kasei [akd5355] ?06/01 - 8 - akm ak5355 crosstalk (gain=0db) last.at2c -140 +0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d b f s 20 20k 50 100 200 500 1k 2k 5k 10k hz figure 5. crosstalk akm ak5355 fft (input level=-0.5db, fiin=1khz, gain=0db) last.at2c -160 +0 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d b f s 20 20k 50 100 200 500 1k 2k 5k 10k hz figure 6. fft plot
asahi kasei [akd5355] ?06/01 - 9 - akm ak5355 fft (input level=-60db, fiin=1khz, gain=0db) last.at2c -160 +0 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d b f s 20 20k 50 100 200 500 1k 2k 5k 10k hz figure 7. fft plot akm ak5355 fft (noise floor, gain=0db) last.at2c -160 +0 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d b f s 20 20k 50 100 200 500 1k 2k 5k 10k hz figure 8. fft plot
asahi kasei [akd5355] ?06/01 - 10 - [gain = +15db] akm ak5355 thd + n vs amplitude (fin=1khz, gain=+15db) last.at2c -140 +0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 dbr -90 -60 -88 -86 -84 -82 -80 -78 -76 -74 -72 -70 -68 -66 -64 -62 d b f s figure 9. thd+n vs. input level akm ak5355 thd + n vs input frequency (input level=-0.5db, gain=+15db) last.at2c 20 20k 50 100 200 500 1k 2k 5k 10k hz -90 -60 -88 -86 -84 -82 -80 -78 -76 -74 -72 -70 -68 -66 -64 -62 d b f s figure 10. thd+n vs. input frequency
asahi kasei [akd5355] ?06/01 - 11 - akm ak5355 linearity (gain=+15db) last.at2c -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 figure 11. linearity akm ak5355 frequency response (gain=+15db) last.at2c 20 20k 50 100 200 500 1k 2k 5k 10k hz -2 +0 -1.9 -1.8 -1.7 -1.6 -1.5 -1.4 -1.3 -1.2 -1.1 -1 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 d b f s figure 12. frequency response
asahi kasei [akd5355] ?06/01 - 12 - akm ak5355 crosstalk (gain=+15db) last.at2c 20 20k 50 100 200 500 1k 2k 5k 10k hz -140 +0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d b f s figure 13. crosstalk akm ak5355 fft (input level-0.5db,fin=1khz, gain=+15db) last.at2c -160 +0 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d b f s 20 20k 50 100 200 500 1k 2k 5k 10k hz figure 14. fft plot
asahi kasei [akd5355] ?06/01 - 13 - akm ak5355 fft (input level=-60db,fin=1khz, gain=+15db) last.at2c -160 +0 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d b f s 20 20k 50 100 200 500 1k 2k 5k 10k hz figure 15. fft plot akm ak5355 fft (noise floor, gain=+15db) last.at2c -160 +0 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 d b f s 20 20k 50 100 200 500 1k 2k 5k 10k hz figure 16. fft plot
asahi kasei [akd5355] ?06/01 - 14 - important notice ? these products and their specifications 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 law and regulati ons 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 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. (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 and 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.
a a b b c c d d e e e e d d c c b b a a va vd pdn rin lin lin rin pdn mclk lrck sel 5355_dif bclk +5v sdto title size document number rev date: sheet of ak5355 a akd5355 a3 12 wednesday, january 25, 2006 title size document number rev date: sheet of ak5355 a akd5355 a3 12 wednesday, january 25, 2006 title size document number rev date: sheet of ak5355 a akd5355 a3 12 wednesday, january 25, 2006 agnd dgnd h l vd va for sn74lvc07a + c11 47u + c11 47u r8 51 r8 51 2 1 3 sw1 pdn sw1 pdn r9 51 r9 51 1 2 l1 (short) l1 (short) 1 2 l3 10u l3 10u j1 lin j1 lin 1 2 3 4 5 6 7 8 cn1 cn1 2 1 d1 1s1588 d1 1s1588 9 10 11 12 13 14 15 16 cn2 cn2 r1 560 r1 560 r2 10k r2 10k r14 51 r14 51 + c1 10u + c1 10u c3 0.1u c3 0.1u j2 rin j2 rin 3 4 u3b 74hc14 u3b 74hc14 r3 560 r3 560 c7 0.1u c7 0.1u + c2 10u + c2 10u + c6 10u + c6 10u jp1 vd jp1 vd jp2 gnd jp2 gnd + c8 47u + c8 47u c17 0.1u c17 0.1u r13 51 r13 51 r11 51 r11 51 r10 51 r10 51 r12 10 r12 10 c5 0.1u c5 0.1u 1 2 l2 10u l2 10u 1 2 u3a 74hc14 u3a 74hc14 c12 0.1u c12 0.1u + c4 2.2u + c4 2.2u + c9 10u + c9 10u c10 0.1u c10 0.1u vcom 1 rin 2 lin 3 vss 4 va 5 vd 6 sel 7 nc 8 lrck 10 mclk 11 bclk 12 pdn 13 nc 15 dif 14 tst1 16 sdto 9 ak5355 u1 ak5355 u1 a1 2 a2 3 a3 4 a4 5 a5 6 a6 7 a7 8 a8 9 g1 1 dir 19 y1 18 y2 17 y3 16 y4 15 y5 14 y6 13 y7 12 y8 11 vcc 20 gnd 10 u2 74lvc541 u2 74lvc541
a a b b c c d d e e e e d d c c b b a a +5v sdto bclk lrck mclk +5v +5v +5v +5v cks0 4103_dif1 4103_dif0 cks1 cks1 4103_dif0 4103_dif1 sel 5355_dif +5v +5v +5v +5v cks0 title size document number rev date: sheet of interface a akd5355 a3 22 wednesday, january 25, 2006 title size document number rev date: sheet of interface a akd5355 a3 22 wednesday, january 25, 2006 title size document number rev date: sheet of interface a akd5355 a3 22 wednesday, january 25, 2006 mclk bclk lrck sdto rom for 74hcu04, 74hc14, 74hc4040 lh ext xtl 256fs 512fs 256fs-64fs 256fs-32fs/512fs-64fs 512fs-32fs sel 5355_dif 4103_dif1 4103_dif0 cks1 cks0 r16 10k r16 10k x1 11.2896mhz x1 11.2896mhz c19 0.1u c19 0.1u clk 10 rst 11 q1 9 q2 7 q3 6 q4 5 q5 3 q6 2 q7 4 q8 13 q9 12 q10 14 q11 15 q12 1 u7 74hc4040 u7 74hc4040 1 2 3 4 5 6 12 11 10 9 8 7 sw2 mode sw2 mode + c16 10u + c16 10u c20 0.1u c20 0.1u c21 0.1u c21 0.1u gnd 1 if 2 vcc 3 in 4 5 5 6 6 port1 totx176 port1 totx176 + c18 47u + c18 47u v1 1 trans 2 resetn 3 mclk 4 sdti 5 bick 6 lrck 7 fs0/csn 8 fs1/cdti 9 fs2/cclk 10 fs3/cdto 11 c1 12 ans 13 bls 14 cks0 15 cks1 16 dvdd 17 dvss 18 txn 19 txp 20 dif0 21 dif1 22 dif2 23 u1 24 u4 ak4103 u4 ak4103 5 6 u3c 74hc14 u3c 74hc14 11 10 u3e 74hc14 u3e 74hc14 9 8 u3d 74hc14 u3d 74hc14 r18 10k r18 10k jp4 clk jp4 clk r17 1k r17 1k jp6 bick jp6 bick jp7 lrck jp7 lrck r19 1m r19 1m 1 2 l4 10u l4 10u c15 0.1u c15 0.1u 1 2 u5a sn74lvc07a u5a sn74lvc07a j3 ext j3 ext c13 0.1u c13 0.1u 13 12 u3f 74hc14 u3f 74hc14 5 6 u6c 74hcu04 u6c 74hcu04 c23 10p c23 10p 6 5 4 3 2 1 rp1 47k rp1 47k c14 0.1u c14 0.1u c22 10p c22 10p 2 1 d2 1s1588 d2 1s1588 1 2 3 4 5 6 7 8 9 10 port2 serial out port2 serial out 3 4 u6b 74hcu04 u6b 74hcu04 2 1 3 sw3 dit sw3 dit r20 51 r20 51 1 2 u6a 74hcu04 u6a 74hcu04 jp3 xte jp3 xte r15 1k r15 1k
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