mosa ms6331 16-bit stereo audio dac & headphone driver rev 2 1/9 www.mosanalog.com 16-bit stereo audio dac & headphone driver component less, low cost features ? operation range: 2.5v~6.5v ? excellent power supply rejection ratio(psrr) ? component less ? no zero crossing distortion ? cost effective ? fast setting time permits 2*, 4*, and 8* oversampling (serial input) or double speed operation at 4* oversampling ? compatible with most of the japanese input formats; time multiplexed, two's complement, ttl input level ? housed in sop8, msop8 package applications ? multimedia system, mp3, pda, portable digital audio. description the ms6331 is an integrated 16-bit voltage-output digital-to-analog converter (dac) and class ab stereo headphone driver. the ms6331 is with the excellent power supply rejection ratio(ps rr). it is fabricated in a cmos process and features extremely low power dissipation, small package size and easy app lication. the accuracy of the matched coarse current sources, combined with the unique symmetrical decoding method, preclude zero-crossing distortion and ensures high quality audio reproduction. these unique featur es, combined with its exceptional performance, make the ms6331 ideally suited for use in digital audio equipment. block diagram + - + - v dd gnd cap bck ws data outr outl dac hp
mosa ms6331 16-bit stereo audio dac & headphone driver rev 2 2/9 www.mosanalog.com pin configuration symbol pin description v dd 1 positive supply voltage outl 2 left channel output outr 3 right channel output cap 4 capacitor bck 5 bit clock input ws 6 word select input data 7 data input gnd 8 ground 7 6 5 8 2 3 4 1 ms6331 gnd data ws bck v dd outl outr cap pin 4 : capacitor = 1uf~10uf ordering information package part number packag ing marking transport media 8-pin sop (lead free) ms6331gtr ms6331g 2.5k units tape and reel 8-pin sop (lead free) ms6331gu ms6331g 100 units tube 8-pin msop (lead free) MS6331MGTR 6331g 3.5k units tape and reel 8-pin msop (lead free) ms6331mgu 6331g 80 units tube rohs compliance absolute maximum ratings symbol parameter rating unit v dd positive supply voltage 6.5 v v esd electrostatic handling -3000 to 3000 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 junc tion to ambient in free air sop8 210 /w operating ratings symbol parameter min typ max unit v dd supply voltage 2.5 - 6.5 v
mosa ms6331 16-bit stereo audio dac & headphone driver rev 2 3/9 www.mosanalog.com 3.3v electrical characteristics (ta=25 , v dd =3.3v, v ss =0v, f=1khz, r l =32 ? ; unless otherwise specified) symbol parameter conditions min typ max unit dc characteristics v cap voltage at cap 1.60 1.65 1.70 v v dc output dc level 1.60 1.65 1.70 v v fs full scale output voltage v fs =0.568 * v dd - 1.87 - v i q quiescent current - 3.6 4 ma cap=2.2uf (100hz) 50 55 - db psrr power supply rejection ratio cap=10uf (100hz) 61 66 - db cs channel separation 70 75 - db ac characteristics res resolution - - 16 bits - -60 -56 db thd+n total harmonic distortion plus noise - 0.1 0.158 % s/n signal-to-noise ratio 86 92 - db po maximum output power (thd+n)/s < 0.1 ? 49 52 - mw vo maximum output voltage swing (thd+n)/s < 0.1 ? 2.5 2.6 - vpp
mosa ms6331 16-bit stereo audio dac & headphone driver rev 2 4/9 www.mosanalog.com typical performance characteristics (ta=25 , r l =32 ? , sampling rate=4fs; unless otherwise specified) quiescent current (ma) supply voltage (v) thd+n (%) frequency (hz) thd+n (%) supply voltage (v) quiescent current vs. supply voltage thd+n vs. frequency thd+n vs. supply voltage v dd =5v v dd =3.3v v dd =2.7v f=1khz psrr (db) frequency (hz) psrr (db) frequency (hz) psrr (db) frequency (hz) psrr vs. frequency psrr vs. frequency psrr vs. frequency cap=10uf cap=10uf cap=10uf cap=2.2uf cap=2.2uf cap=2.2uf v dd =5v v rr =-20dbv v dd =3.3v v rr =-20dbv v dd =2.7v v rr =-20dbv channel separation (db) supply voltage (v) channel separation vs. supply voltage
mosa ms6331 16-bit stereo audio dac & headphone driver rev 2 5/9 www.mosanalog.com timing and data format the ms6331 accepts input serial data formats of 16-bit word length. le ft and right data words are time multiplexed. the msb must always be first. the format of data input is shown in figs. 1 and 2. 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.1 timing and input signals. 0 1 2 15 14 13 210 msb lsb 15 14 13 210 msb lsb right left ws bck data fig.2 format of input signals. data format (bck, ws, data) symbol parameter conditions min typ max unit v il input low level - - 0.8 v v ih input high level 2 - - 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
mosa ms6331 16-bit stereo audio dac & headphone driver rev 2 6/9 www.mosanalog.com application information basic application example 10uf 47uf 47uf headphone (32 ) v dd phone jack bck ws data gnd cap outr outl v dd ms6331 5 6 7 81 2 3 4 digital audio input note : vo=1.87vpp at v dd =3.3v
mosa ms6331 16-bit stereo audio dac & headphone driver rev 2 7/9 www.mosanalog.com external dimensions h e d a a1 e b c l 14 5 8 sop8 a a1 b c l d h e a2 e dimension in mm dimension in inch symbol 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 dimension in mm dimension in inch symbol 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 msop8
mosa ms6331 16-bit stereo audio dac & headphone driver rev 2 8/9 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
mosa ms6331 16-bit stereo audio dac & headphone driver rev 2 9/9 www.mosanalog.com demo board 1 3 2 function description label 1: supply input the supply range is 2.5~6.5 vdc. label 2: headphone jack used 3.5mm diameter of headphone with 32ohm label 3: digital audio input connected to digital audio signals. circuit c1 100u c6 104 j1 phonejack 1 2 j5 avdd c2 100u r1 1k r2 1k r3 1k bck ws data out_r 1 2 3 j2 audio out 1 2 3 4 j3 audio source c3 100u out_l g g c4 10u vdd 1 o_l 2 o_r 3 cap 4 bck 5 ws 6 data 7 gnd 8 * ms6331
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