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mo sa ms6324/26 16-bits stereo audio dac rev 2 1/13 www.mosanalog.com 16-bits stereo audio dac low power consumption low voltage, excellent psrr features ? operation range: 2.5v~6.5v. ? excellent power supply rejection ratio(psrr). ? low operating current. ? low power consumption 8mw at v dd =3.3v (full scale output ). ? low distortion. ? no zero crossing distortion. ? wide dynamic range(16-bit resolution). ? voltage output . ? cost efficient. ? fast setting time permits 2*, 4*, and 8* oversampli ng (serial input) or double speed operation at 4* oversampling . ? output voltage swing is proportional to supply volt age (v opp =v dd /2). ? the minimum high voltage of digital clocks (ws,data and bck)and the control inputs can be 1.8v at vdd = 5v. ? as the power is up, the initial registers of the da c are 0000hex, so the dac output will bevdd/2. ? audio format i2s(ms6324) right justified(ms6326) ? space saving package sop8, msop8, dfn8 applications ? multimedia system ? mp3, pda, portable digital audio. ? set top box. description the ms6324/26 is a 16-bit voltage-output digital-to -analog converter(dac). it gives the excellent powe r supply rejection ratio(psrr). it features extremely low po wer dissipation, small package size and easy applic ation. the accuracy of the weight current sources, combined wi th the unique symmetrical decoding method, preclude zero- crossing distortion and ensures high quality audio reproduction. as the power is up, the initial regis ter s of the dac are 0000hex, so the dac output will bevdd/2. these uniq ue features, combined with its exceptio nal performance, make the ms6324/26 ideally suited for use in portable au dio equipment. ms6326 is pin an d function compatible with ms6323. pin configuration symbol pin description sop8/msop8 dfn8 bck 1 bit clock input ws 2 word select input data 3 data input gnd 4 ground v dd 5 positive supply voltage v ol 6 left channel output cap 7 cap v or 8 right channel output
mo sa ms6324/26 16-bits stereo audio dac rev 2 2/13 www.mosanalog.com block diagram left output latch right output latch left bit switchs right bit switchs 16-bit weight current divider 16-bit weight current divider left input latch right input latch control & timing bck ws data reference source 12 3 4 5 v dd gnd 10uf r f i br r f i bl v ref v ref v out left 68 v out right op1 op2 v ref 0.1uf 7 1uf cap reference current source i ref i br reference current source i ref i bl fig.1 block diagram. ordering information package part number marking transport media 8-pin sop (lead free) ms6324gtr ms6324g 2.5k units tape and reel 8-pin sop (lead free) ms6324gu ms6324g 100 units tu be 8-pin msop (lead free) ms6324mgtr 6324g 3.5k units tape and reel 8-pin msop (lead free) ms6324mgu 6324g 80 units tub e 8-pin dfn (lead free) MS6324DGTR ms6324 5k units ta pe and reel 8-pin sop (lead free) ms6326gtr ms6326g 2.5k units tape and reel 8-pin sop (lead free) ms6326gu ms6326g 100 units tu be 8-pin msop (lead free) ms6326mgtr 6326g 3.5k units tape and reel 8-pin msop (lead free) ms6326mgu 6326g 80 units tub e 8-pin dfn (lead free) ms6326dgtr ms6326 5k units ta pe and reel rohs compliance
mo sa ms6324/26 16-bits stereo audio dac rev 2 3/13 www.mosanalog.com absolute maximum ratings symbol parameter rating unit v dd positive supply voltage 6.5 v v esd electrostatic handling -2000 to 2000 v t stg storage temperature range -65 to 150 t a operating ambient temperature range -40 to 85 t j maximum junction temperature 150 t s soldering temperature, 10 seconds 260 r thja thermal resistance from junction to ambient in free air sop8 msop8 dfn8 175 235 120 /w operating ratings symbol parameter min typ max unit v dd supply voltage 2.5 - 6.5 v 6v electrical characteristics (ta=25 , v dd =6v, f=1khz, cap=1uf; unless otherwise specified) symbol parameter conditions min typ max unit dc characteristics v cap voltage at cap 2.95 3 3.05 v v dc output dc level 2.95 3 3.05 v v fs full scale output voltage v fs =0.5v dd 2.8 3 3.2 vpp i q quiescent current at code 0000h - 3 - ma i fs maximum operation current v fs =0.5v dd - 3.2 - ma psrr power supply rejection ratio cap=1uf, f=100hz 44 49 - db cap=10uf, f=100hz 59 63 - db cs channel separation 89 94 - db ac characteristics res resolution - - 16 bits thd+n total harmonic distortion plus noise - -68 -63 db - 0.04 0.068 % s/n signal-to-noise ratio 89 95 - db
mo sa ms6324/26 16-bits stereo audio dac rev 2 4/13 www.mosanalog.com 5v electrical characteristics (ta=25 , v dd =5v, f=1khz, cap=1uf; unless otherwise specified) symbol parameter conditions min typ max unit dc characteristics v cap voltage at cap 2.45 2.5 2.55 v v dc output dc level 2.45 2.5 2.55 v v fs full scale output voltage v fs =0.5v dd 2.3 2.5 2.7 vpp i q quiescent current at code 0000h - 2.7 - ma i fs maximum operation current v fs =0.5v dd - 2.8 - ma psrr power supply rejection ratio cap=1uf, f=100hz 45 50 - db cap=10uf, f=100hz 64 69 - db cs channel separation 88 93 - db ac characteristics res resolution - - 16 bits thd+n total harmonic distortion plus noise - -68 -63 db - 0.04 0.068 % s/n signal-to-noise ratio 89 95 - db 3.3v electrical characteristics (ta=25 , v dd =3.3v, f=1khz, cap=1uf; unless otherwise specified) symbol parameter conditions min typ max unit dc characteristics v cap voltage at cap 1.6 1.65 1.7 v v dc output dc level 1.6 1.65 1.7 v v fs full scale output voltage v fs =0.5v dd 1.5 1.65 1.8 vpp i q quiescent current at code 0000h - 2.3 - ma i fs maximum operation current v fs =0.5v dd - 2.4 - ma psrr power supply rejection ratio cap=1uf, f=100hz 45 50 - db cap=10uf, f=100hz 63 68 - db cs channel separation 85 90 - db ac characteristics thd+n total harmonic distortion plus noise - -66 -62 db - 0.05 0.08 % s/n signal-to-noise ratio 86 92 - db
mo sa ms6324/26 16-bits stereo audio dac rev 2 5/13 www.mosanalog.com 2.5v electrical characteristics (ta=25 , v dd =2.5v, f=1khz, cap=1uf; unless otherwise specified) symbol parameter conditions min typ max unit dc characteristics v cap voltage at cap 1.2 1.25 1.3 v v dc output dc level 1.2 1.25 1.3 v v fs full scale output voltage v fs =0.5v dd 1.15 1.25 1.35 vpp i q quiescent current at code 0000h - 2.0 - ma i fs maximum operation current v fs =0.5v dd - 2.05 - ma psrr power supply rejection ratio cap=1uf, f=100hz 45 49 - db cap=10uf, f=100hz 62 67 - db cs channel separation 82 87 - db ac characteristics thd+n total harmonic distortion plus noise - -66 -62 db - 0.05 0.08 % s/n signal-to-noise ratio 83 89 - db typical performance characteristics (ta=25 , f=1khz, cap=1uf, sampling rate=4fs; unless otherw ise specified, ) thd+n (%) frequency (hz) thd+n (%) frequency (hz) thd+n (%) frequency (hz) thd+n vs. frequency thd+n vs. frequency thd+n vs. frequency v dd =3.3v v dd =2.5v v dd =5v
mo sa ms6324/26 16-bits stereo audio dac rev 2 6/13 www.mosanalog.com thd+n (%) frequency (hz) thd+n (%) supply voltage (v) psrr (db) frequency (hz) thd+n vs. frequency thd+n vs. supply voltage psrr vs. frequency psrr (db) frequency (hz) psrr (db) frequency (hz) psrr (db) frequency (hz) psrr vs. frequency psrr vs. frequency psrr vs. frequency quiescent current (ma) supply voltage (v) channel separation (db) supply voltage (v) quiescent current vs. supply voltage channel separation vs. supply voltage cap=1uf cap=10uf v dd =3.3v v rr =-20dbv cap=1uf cap=10uf v dd =5v v rr =-20dbv cap=1uf cap=10uf v dd =6v v rr =-20dbv v dd =6v cap=1uf cap=10uf v dd =2.5v v rr =-20dbv
mo sa ms6324/26 16-bits stereo audio dac rev 2 7/13 www.mosanalog.com timing and data format the ms6324/26 accepts input serial data formats of 16-bit word length. left and right data words are t ime multiplexed. the msb must always be first. the form at of data input is shown in figs. 2 and 3. with a high level on the word select input (ws), data is placed in the l eft input register and with low level on the ws inp ut, data is placed in the right register (fig. 1). the data in the inp ut registers are simultaneously latched in the outp ut registers which control the bit switches. internal bias currents i bl and i br are each added to the full scale output current i fs in order to achieve the maximum dynamic range at the outputs of op1 and op2(fig. 1). in this way the maximum dynam ic range is achieved over the entire power supply range. right ws bck data lsb msb t r t hb t f t cr t lb t hw t sw left t sd t hd fig.2 timing and input signals. data format (bck, ws, data) symbol parameter conditions min typ. max unit v il input low level - - 0.7 v v ih input high level 1.8 - - v l i il l input leakage current low - - 10 a l i ih l input leakage current high - - 10 a f bck input clock frequency - - 18.4 mhz br bit rate data input - - 18.4 mbits/s f ws word select input - - 384 khz t r rise time - - 12 ns t f fall time - - 12 ns t c r bit clock cycle time 54 - - ns t hb bit clock high time 15 - - ns t lb bit clock low time 15 - - ns t sd data set-up time 12 - - ns t hd data hold time to bit clock 2 - - ns t hw word select hold time 2 - - ns t sw word select set-up time 12 - - ns
mo sa ms6324/26 16-bits stereo audio dac rev 2 8/13 www.mosanalog.com i2s format 15 14 13 2 1 0 msb lsb right left ws bck data 1 bck 1 bck 15 14 13 2 1 0 msb lsb fig.4 i2s format(ms6324) right justified format 0 1 2 15 14 13 2 1 0 msb lsb 15 14 13 2 1 0 msb lsb right left ws bck data fig.3 right justified format(ms6326) application information mp3 digital to analog converting solution bck ws data gnd vor cap vol v dd ms6324/26 100uf ms6308 68pf 39k 22k 22k 1nf 15k 1.2nf 1uf 100k 1uf 100k 10 supply v ref 10uf 0.1uf 1uf f -3db = 17.5khz dcgain = 1.05 v dacout p-p = 1.65v v out p-p = 1.75v for v dd = 3.3v headphone (32 ) fig.4 a third order lowpass filter ( smoothing fil ter ) for dac output.
mo sa ms6324/26 16-bits stereo audio dac rev 2 9/13 www.mosanalog.com 0.1uf bck ws data gnd vor cap vol v dd ms6324/26 12 3 4 5 6 7 8 47uf ms6308 1 23 dac headphone driver 22k 450pf 50k 50k 10uf v ref 20k 20k 20k 470pf 0.1uf 7 56 47uf 1uf 1.65v pp 1.65v pp headphone (32 ) phone jack av dd 10 supply 47uf 0.1uf 3.3v fig.5 a first order lowpass filter for dac output.
mo sa ms6324/26 16-bits stereo audio dac rev 2 10/13 www.mosanalog.com external dimensions h e d a a1 e b c l 1 4 5 8 sop8 a a1 b c l d h e a2 e msop8 a1 b a3 d e a e e2 d2 l k d/2 e/2 dfn8 symbol dimension in mm dimension in inch min max min max a 1.35 1.75 0.0532 0.0688 a1 0.10 0.25 0.0040 0.0098 b 0.33 0.51 0.013 0.020 c 0.19 0.25 0.0075 0.0098 d 4.80 5.00 0.1890 0.1968 h 5.80 6.20 0.2284 0.2440 e 3.80 4.00 0.1497 0.1574 e 1.27 bsc 0.050 bsc l 0.40 1.27 0.016 0.050 symbol dimension in mm dimension in inch min max min max a 0.81 1.12 0.032 0.048 a1 0.05 0.15 0.002 0.006 a2 0.76 0.86 0.030 0.038 b 0.28 0.38 0.011 0.015 c 0.13 0.23 0.005 0.009 d 2.90 3.10 0.114 0.122 h 4.70 5.10 0.185 0.201 e 2.90 3.10 0.114 0.122 e 0.65 0.026 l 0.40 0.66 0.016 0.026 symbol dimension in mm min nom max a 0.80 0.90 1.00 a1 0 0.02 0.05 a3 0.20 ref. d 3.00 basic d2 1.60 2.50 e 3.00 basic e2 1.35 1.75 e 0.65 basic b 0.25 0.30 0.35 l 0.30 0.40 0.50 k 0.20 jedec mo-229(variation v3030c-2)
mo sa ms6324/26 16-bits stereo audio dac rev 2 11/13 www.mosanalog.com tape and reel (unit : mm) 3.0 3.6 12.0 6.9 8.0 5.5 1.75 5.4 2.0 4.0 1.5+0.1/-0.0 dia 0.5 radius typical 1.5 min 0.30 0.3r max 1.7 2.0 0.05 0.05 0.05 0.3 sop8 3.4 4.2 12.0 5.2 8.0 5.5 1.75 3.3 2.0 4.0 1.5+0.1/-0.0 0.3 typical 1.5 min 0.30 0.3r max 1.2 1.6 0.05 0.05 0.05 0.3 msop8
mo sa ms6324/26 16-bits stereo audio dac rev 2 12/13 www.mosanalog.com 3.4 12.0 8.0 5.5 1.75 2.0 4.0 1.5+0.1/-0.0 1.6+0.1/-0.0 0.30 1.2 0.05 0.05 0.05 0.3 0.1 0.1 0.1 3.4 0.1 0.01 dfn8(3x3mm)
mo sa ms6324/26 16-bits stereo audio dac rev 2 13/13 www.mosanalog.com 1 2 j2 avdd + c1 1u + c7 0.1u avdd j3 output + c6 10u bck 1 ws 2 data 3 gnd 4 vdd 5 vol 6 cap 7 vor 8 u1 ms6324/26 1 2 3 4 j1 input outa 1 -ina 2 +ina 3 vss 4 +inb 5 -inb 6 outb 7 vdd 8 u3 ms6308 + c4 0.1u + c8 0.1u + c3 470p + c10 470p r4 20k r5 20k r2 51k r6 20k r3 20k r1 51k + c2 10u + c5 47u + c9 47u 1 2 j4 vo r7 1k r9 1k r8 1k r11 1k r10 1k 1 2 j5 hpo demo board function description label 1: supply input supply voltage range is 2.5v to 6.5v. label 2: headphone jack used 3.5mm diameter of headphone with 32ohm. label 3: digital signal input connected to digital audio format. label 4: ms6324/26 output ms6324/26 output test ports. circuit 1 3 4 2

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