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technology AV2636 avs 24-bit 192k hz stereo audio dac description the av263 6 is a high p e r forma n ce, lo w po wer stere o au dio digital to anal og converte r (da c ). it is de sig ned for high perfo rman ce a udi o appli c ation s su ch as cd player, dvd player, home theate r systems, di gital tvs and set top boxes. ba sed on the stat e of the art multi-bit ?? mod u la tor, it also inclu d e s t he digital interpol ation filters, digital volume co ntrol, digital de-e m ph asi s and anal og low pa ss filters. it has no linea rity drift due to time and tempe r ature. it als o has high toleranc e to c l oc k jitter. the device has a se rial audio interface that accept s 16/1 8 /20/24 digit a l data in i 2 s, right- justified or dsp mode. it can wo rk at au to-dete c t mode o r p r o g ramm able mode with a two-wire seri al comm and inte rface . audio sam p le rate s from 8khz to 192 khz are suppo rted. feat ures ? snr: 102 db ? thd+n: -90 db ? input sample rate: 8khz ? 192 khz ? input data re solution: 16/18 /20/24 bits ? digital de-e mpha sis fo r 3 2 k/44.1 k /48 k hz ? digital volum e control ? mute cont rol ? single power supply 2.2v ? 3.6v ? low clo ck jitter sensitivity ? small 14-pi n soic packag e applic atio ns ? dvd/c d play er ? home t heatre systems ? digital tv an d set-top bo xes ? e l ect r o n ic mu sic i n st rum e n t chip bl oc k dia g r a m se r i al aud i o in te r f ac e in t e r p o l a t i o n di gi ta l f i l t er s mul t i - le v e l ?? modu la to r da c da c l o w pa ss fi l t er l o w pa ss fi l t er co nt rol i n te rf a c e fmtc fm td m u t e sc sf sd ao u t l ao u t r mck vdd v cm g n d mo d e avs technol ogy, inc. 1-16 august 18, 2004 w w w . av s t ec h.c o m
a v 2636 produc t datas h eet pin co nfig ur atio n a v 26 36 14 1 13 2 12 3 11 4 10 5 9 6 8 7 sf sd sc nc vc m a o ut r gnd mc k fm td fm tc mo d e mu t e ao utl vd d pin descri ption pin name pin t y pe des c ription sf 1 digital input sample rate f r ame clo ck in put. s d 2 digital i n p u t audio data input. it c an be 16/18/2 0 /24 bit in 2?s co mplem ent format. sc 3 digital input serial au dio d a ta bit clock i nput. ( n c ) 4 - no conn ectio n vcm 5 analog outp u t comm on mo de voltage ou tput. conne ct to 10uf cap in parall e l with 0.1uf cap. aout r 6 analog outp u t right chan nel analog a udio signal o u tput . gnd 7 supply grou nd suppl y. need a soli d grou nd pla n e . vdd 8 supply powe r su pply . need a cl ea n power supp ly. aoutl 9 analog outp u t left chan nel analo g audio sign al output. mute 10 digital input mute cont rol with intern al pull do wn. high = mute on. low = mute off. mode 11 digital input chip o peratio n m ode sele ction with internal pull do wn. high = prog rammabl e mo de. low = auto-d etect mode. f m t c 12 digital i n p u t dual fun c tion al pin. its function i s co n t rolled by th e mode pin . internal pull up. whe n mo de = high, fmt c = seri al clo ck in cont rol interface. when mode = low, fmtc = de-empha s i s : on (high) / off (low). f m t d 13 digital i / o dual fun c tion al pin. its function i s co n t rolled by th e mode pin . internal pull u p . need s an external 4.7 k to vdd. whe n mo de = high, fmt d = seri al dat a in control in terface. when mode = low, fmtd = da ta input format s e lec t: high = 16-24 bit i2s or 16 bit dsp ?early? low = 16 bit right justified o r 16 bit dsp ?late? mck 14 digital input external master clo ck inp u t. the clock frequen cy depen ds on th e audio sampl e rate. avs technol ogy, inc. 2-16 august 18, 2004 w w w . av s t ec h.c o m
a v 2636 produc t datas h eet or derin g info rm atio n p r o d u c t p a c k a g e t e m p e r a t u r e ra nge AV2636 14 pin soic -25 ? c ? +85 ? c electrostatic discharge sensitivity the devic e of integrated circ uit s is manufa c t ured on cmos proc es s . it can be damaged by esd. avs tech nolo g y recom m en ds that the device be h andl ed with app rop r iate esd precaution s . imprope r handli ng and installatio n proce dures can cau s e dam a ge to the device. absolute maximum ratings absolute m a ximum rating s are the limitin g values of th e stre ss. ope r ation beyo n d these limits may cau s e perm ane nt damage to the device. norm al oper ation i s not gua rant eed at these limits. sy m b o l c h a r acteristi c s m i n m a x u n i t s vdd powe r su pply voltage (mea sured to g n d) -0.3 +3.6 v vi digital input v o ltage ra nge gnd ? 0.3 vdd + 0.3 v ai digital input f o rced current -100 +10 0 ma t a ambient ope rating tempe r a t ure ra nge -25 +12 5 ? c tstg storage temp eratu r e ra nge -65 +15 0 ? c tj jun c tion tem peratu r e (pl a stic pa ckag e) -65 +15 0 ? c tsol lead sold erin g temperature (10 sec., ? from pin) +24 0 ? c tvsol vapor p h a s e sold erin g (1 minute) +22 0 ? c r e c o mmend ed oper atin g cond ition s sy m b o l c h a r acteristi c s m i n t y p i c a l m a x u n i t s vdd powe r su pply voltage 2.2 3.3 3.6 v g n d g r o u n d 0 v mck maste r clo c k freque ncy 75 mhz t a ambient ope rating tempe r a t ure ra nge -25 85 ? c avs technol ogy, inc. 3-16 august 18, 2004 w w w . av s t ec h.c o m
a v 2636 produc t datas h eet electri c al characteristics (tes t c o nditions : vdd = 3. 3v, gnd = 0v, t a = +25 ? c, fs = 48 khz, mck = 256f s unle s s othe rwi s e state d . the mea s u r e m ent band wi dth is from 20 hz to 20 khz. ) paramete r s s y m b o l m i n t y p m a x u n i t s dc elec trica l charac teris t ics supply cu rre nt (vdd = 3.3 v ) i dd 1 0 m a supply cu rre nt (vdd = 2.5 v ) i dd 7 m a digital i/o lev e ls (ttl le v e l) digital input h i gh level v ih 2 . 0 v digital input l o w level v il 0 . 8 v digital outp u t high level (i oh = 2ma ) v oh v d d ? 0.2 v digital output low level (i ol = 2ma ) v ol gnd+0.2 v analog char acte r istics referen c e vo ltage vcm vdd/2 v full scale an alog outp u t level aout vdd/3.3 vrms minimum resi stive load r l 1 0 k maximum capacitive load c l 1 0 0 p f output dc le vel vdd/2 v da c an alog outpu t perf o r m a nce ( t est load r l = 10k , c l = 10pf ) s n r 1 0 2 d b thd+n (1khz, 0dbf s input) - 9 0 d b vdd = 3.3v dynami c ra n ge (1khz, -60d bf s input) 9 8 d b s n r 1 0 0 d b thd+n (1khz, 0dbf s input) - 9 0 d b vdd = 2.5v dynami c ra n ge (1khz, -60d bf s input) 9 6 d b cha nnel sep a ration (1 khz) -95 db interch ann el gain mismatch 0.1 db program gai n range - ? + 6 db notes: 1. snr is mea s ured a s the ratio of output level with 1k hz full scal e sign al, to output level with all zero sign al into th e digital in put . the mea s u r ement is ov er 20hz to 2 0 khz ban dwi d th with a ?a-wei ght? filter. 2. thd i s mea s ured at the output with 1khz full scal e sign al into the digital input. the measu r ement is over 20 hz to 20khz ban dwidth. 3. dynami c ra nge is the ra tio of maximum output over minimum output. it is norm a lly measu r ed by thd+n at the output with an input sign al that is 60db below full scale. the 60 db is then added ba ck to the thd+n value for the final result. 4. cha nnel sep a ration i s also kno w n a s chann el cros s talk. it is measured by se n d ing a 1 k hz full scale sign al into on e cha nnel a n d measuri ng the output val ue at the othe r cha nnel. 5. all measure m ents are do ne with a 20khz low pa ss f ilter. fail to use the filter will result in reduced perfo rman ce readi ng. 6. the vcm pin sho u ld b e d e co uple d wit h a 10 uf cap a citor in pa ra llel with a 0.1 u f capa citor. smaller value may re sult in red u ce d perfo rman ce. avs technol ogy, inc. 4-16 august 18, 2004 w w w . av s t ec h.c o m
a v 2636 produc t datas h eet operating mode the av263 6 can ope rate at two mo d e s. th ey ar e auto-d e tect mode a nd p r ogra mmabl e mode. th e ?mode? pin st atus (hig h/lo w) d e termi n e s whi c h m ode the device wi ll be ope rated . if mode = l o w (pull to gnd or not con n e c ted u s ing internal pull down ) , t he device wil l be operate d at auto-detect mode. if mode = high (pull to v d d), the device will be oper ated at programmabl e mode. the basi c functions of the two mode s are d e scrib ed as follo ws: x auto-dete c t m ode: the re lation betwee n sam p le rate and ma ster clock freq uen cy is auto dete c ted. de-emp ha sis and se rial int e rface mod e are dete r min ed by fmtc and fmt d pi ns. x program m able m ode: the device operation will be set by on ch ip control re gi sters that ca n be acce ssed through a two-wire co mman d interface. au dio d a t a sample rate an d master cl oc k freq u e ncy the AV2636 sup port s vari ous au dio dat a sample rate (fs) from 8khz to 192khz. the typical a udio sam p le rates are 3 2 khz, 4 4 .1kh, 48khz, 96 khz an d 1 9 2 k hz. t he ma ste r cl ock (mck ) can b e of 6 4 fs to 3 84f s depe nding o n the operatio n mode. mck is an input clo ck that op erate s the inte rnal digital fi lters. othe r on chip clo c ks are also d e rive d from mck. the on -chip maste r cl ock detectio n ci rcuit a u tomat i cally dete r mi nes th e rel a tionship of m a ster clo ck freque ncy a n d audi o sam p le rate. t h e cou n ting e r ror i s set to b e 8 m a ste r clo ck cycl es. if the erro r i s large r than th e threshold, the dac o u tp ut will be sh ut down a nd au to muted. the ma ster cl ock ha s to be synch r oni ze d with the se rial audio d a ta frame sig nal ?sf?. sf is also calle d left and rig h t data frame sig nal. the pha se di fference and clo ck jitters can be tolerate d. master cloc k freque nc y mck (mhz) sample rat e (f s) 6 4 f s 9 6 f s 1 2 8 f s 1 9 2 f s 2 5 6 f s 3 8 4 f s 32 khz n/a n/a n/a n / a 8 . 1 9 2 1 2 . 2 8 8 44.1 khz n/a n/a n/a n / a 1 1 . 2 8 9 6 16.934 4 48 khz n/a n/a n/a n / a 1 2 . 2 8 8 1 8 . 4 3 2 88.2 khz n/a n / a 11.189 6 1 6 . 9 3 4 4 2 2 . 5 7 9 2 3 3 . 8 6 8 8 96 khz n/a n / a 1 2 . 2 8 8 1 8 . 4 3 2 2 4 . 5 7 6 3 6 . 8 6 4 1 9 2 k h z 1 2 . 2 8 8 1 8 . 4 3 2 2 4 . 5 7 6 3 6 . 8 6 4 4 9 . 1 5 2 * 7 3 . 7 2 8 * note: * only available at prog ra mmable mo d e . avs technol ogy, inc. 5-16 august 18, 2004 w w w . av s t ec h.c o m
a v 2636 produc t datas h eet digital au dio d a t a in terf ace the seri al au dio data i s se nd to the devi c e th rou gh a th ree - wi re int e rface. the interface con s ists of th re e input pin s that are serial clo ck (sc), serial data (s d) a nd syn c -frame (sf ) . the syn c -f ra me is al so a left/right c hannel indic a tor. three interfac e formats are s u pported. x i 2 s mode x right ju stified mode x dsp mode all formats se nd msb first. the a udio da ta is in 2?s co mpleme nt format. the mo de sele ction can be eith e r in auto-d e tect mode or p r o g ramm able m ode. the thre e-wire digital audi o data interfa c e timing sp e c ificatio n is shown at the followin g diag ram. sf sc sd t sc h t sc l t sc t sf h t sf s t dcs t dch the timing ch ara c teri stics are sho w n at the followin g table. sy m b o l d e s c r i p t i o n m i n m a x u n i t s t sc s c clo ck cy cl e t i me 50 ns t sch sc pulse widt h high 20 ns t scl sc pulse widt h low 20 ns t dcs sd data setu p time relative to sc risin g edge 10 ns t dch sd data hold time relative to sc risi ng e dge 10 ns t sfh sf hold time relative to sc rising e dge 10 ns t sfs sf setup tim e relative to sc risi ng ed ge 10 ns i 2 s mode in i 2 s mode, the seri al interface acce pts input data at sd pin and frame input at sf pin. the seria l data is time multiplexed with the frame sign al sf indicating left and right cha n n e l data. sf is low durin g left channel data an d high duri n g right chan nel data. the sf is also a timing sign al for the start of ea ch word of left and right chan nel. the msb of the audio d a ta sd is sampl ed on the se cond ri sing e d ge of sc following sf tran sition. wo rd length s of 16/18/20/2 4 bits are sup ported. avs technol ogy, inc. 6-16 august 18, 2004 w w w . av s t ec h.c o m
a v 2636 produc t datas h eet 1/f s n-1 n-2 1 0 n-1 n-2 1 0 ri ght channe l lef t channel sf sc sd 1 s c 1 s c m sb l s b m sb l sb righ t just ified mode in right ju stified mod e , the seri al inte rfa c e a c cept s in put data at s d pin and fra m e input at s f pin. the se rial dat a is time multiplexed with the frame sig n a l sf indicating left and right chan nel d a ta. sf is hig h d u ring l e ft cha nnel d a ta an d low duri ng right chan nel data. the s f is al so a ti ming sign al for the end of ea ch word of left and right chan nel. the msb is received first and lsb is aligned with the tran sition of frame si gnal sf. dat a is sampl ed at the risin g edg e of sc. word l ength s of 16/18/20/24 bit s are supp orte d. 1/f s n-1 n-2 1 0 n-1 n-2 1 0 ri ght channe l lef t channel sf sc sd m s b l sb m s b l sb dsp mode in dsp mode, the serial interface accept s input data at sd pin and frame input at sf pin. audio data sd is time multiplexed with left c hann el firs t followe d by right chann el data. frame sync sf appe ars every 1/fs time. minimum sf p u lse hi gh is 1 sc cycle a n d maximum sf pulse hig h is 8 sc cycle s . both dsp ?earl y ? mode and ? l ate? mode a r e sup porte d. the msb is receive d first. data is sampl ed at the risin g edge of sc. word len g th s of 16/18/20/ 24 bits are sup p o rted. avs technol ogy, inc. 7-16 august 18, 2004 w w w . av s t ec h.c o m
a v 2636 produc t datas h eet dsp ?early? m ode: 1/f s n-1 n-2 1 0 no v a l i d da t a n-1 n- 2 1 0 ri ght cha nnel l e f t channel sf sc sd m sb l s b m sb l s b 1 s c m a x 8 sc cy cl e s dsp ?late? mode: 1/f s n- 1 n-2 1 0 no v a l i d da t a n-1 n-2 1 0 ri ght channe l lef t channel sf sc sd m sb lsb m sb l s b m a x 8 sc cy cl e s avs technol ogy, inc. 8-16 august 18, 2004 w w w . av s t ec h.c o m
a v 2636 produc t datas h eet serial co ntrol inte rface the AV2636 supp orts a 2-wi re i 2 c co mpatible seri al control interface. whe n mode pin is externally pulled high, t he fmt c an d fmt d pi ns function a s scl a nd s d a. whe r e s c l is se rial clo c k input and sda is se ria l data input and output. the internal control regi st ers can b e prog ram m ed through th e interface. the chip id for the av26 36 is a 7 - bit hexade cimal numbe r ?3 2 hex?. the p r otocol fo r wri t e operation con s i s ts of se nding 3 bytes of data to th e AV2636 at sda pin. followin g each b y te is the acknowl edge bit gene rated by the AV2636. the first byte is the 7-bit ch ip id follo wed by the read/write bit (re ad is logi c high and writ e is logic low). the se con d byte is control regi ste r addre s s. the third byte is control re giste r data. the followin g diagra m shows a ?write ? sequ e n ce and timi ng of control registe r add ress 00 h and data 30 h. sda scl star t c a 6 c a 0 r / w a c k a7 a6 a5 a4 a3 a2 a 1 a0 ac k d 7 d 6 d 5 d 4 d 3 d 2 d 1 d 0 ac k sto p 0 1 1 0 0 1 1 chip id : c a [ 6 :0] = 01 1 0010 regist er add r es s: a[7 : 0] = 00 h data: d[7 : 0] = 30 h timing specifications t bf stop star t sto p t dh _ s t a t lo w t r t f t hi g h t dh_da t ds _da t ds _ st o star t t ds _s t a sda scl sy m b o l d e s c ription s m i n m a x u n i t s f sc scl clo c k fre quen cy 100 khz t ds_st a start co ndi tion sda setu p time 4.7 s t dh_st a start co ndi tion sda hold time 4.0 s t ds_st o stop con d ition sda setu p time 4.0 s t lo w scl low p u lse time 4.7 s t high scl high p u l s e time 4.0 s tr scl and s d a rise time 1.0 s tf scl and s d a fall time 0.3 s t ds_d a data setup time 250 ns t dh_d a data hol d time 0 ns t bf bus free time 4.7 s avs technol ogy, inc. 9-16 august 18, 2004 w w w . av s t ec h.c o m
a v 2636 produc t datas h eet prog r a mm able co nt rol register assign ment there are 4 prog ramm a b le co ntrol registe r s i n AV2636. thei r function a n d add re ss a ssi gnme n t are descri bed in t he followi ng table s . all the conte n ts of the prog ram m a b le co ntrol re gisters can b e read b a ck throug h the serial control interface. addre ss (7-bit hex) regis t e r d e f a ult valu e (hex ) function de scription 0 creg 0 [7:0] 7f volume control for both left and right cha nnel 1 c r e g 1 [ 7 : 0 ] 0 0 device c o n t r o l 2 creg 2 [7:0] 00 serial au dio interface mod e control 3 creg3[7:0] 00 cloc k and sample rate s e ttings volum e con t rol regis t er (cre g0 [7: 0 ]) creg 0 [ 7 :0 ] b i t 7 b i t 6 b i t 5 b i t 4 b i t 3 b i t 2 b i t 1 b i t 0 addre ss 7?h00 volume[7:0] def a ult valu e 0 1 1 1 1 1 1 1 dev i ce control register (creg1 [7 :0]) creg 1 [ 7 :0 ] b i t 7 b i t 6 b i t 5 b i t 4 b i t 3 b i t 2 b i t 1 b i t 0 addre ss 7?h01 s t d b y d e e m p res e r v e d m u t e def a ult valu e 0 0 0 0 0 0 0 0 stdby: stand-by co ntrol 0: disabl e stand-by (defa u l t ) 1: enable sta nd-by for po wer saving (note s : mute sho u ld be e n abled when s t dby is enabl ed.) deemp: de-e mpha sis cont rol 0: by-pass de -emp ha sis filter (d efault) 1: enable d e -empha si s filter mute: software mute control 0: do not mute the left and right ch ann el dacs (d efaul t) 1: mute the left and right ch annel dacs simultaneo usly serial audio interface co nt rol re giste r (creg2 [7:0]) creg 2 [ 7 :0 ] b i t 7 b i t 6 b i t 5 b i t 4 b i t 3 b i t 2 b i t 1 b i t 0 addre ss 7?h02 res e r v e d s f j scj s a i m [ 1 : 0 ] f o r m a t [ 1 : 0 ] def a ult valu e 0 0 0 0 0 0 0 0 sfj: sync frame adju stment 0: do not dela y sf signal b y 1 sc clock cycle (default ) 1: delay sf signal by 1 sc clo ck cycle scj: serial clock adjustm ent 0: do not invert sc clo ck (d efault) 1: inver t sc clock avs technol ogy, inc. 10-16 august 18, 2004 w w w . av s t ec h.c o m
a v 2636 produc t datas h eet saim[1:0]: serial audi o interface mod e control 00: i 2 s mode 01: dsp ?earl y ? mode 10: right justif ied mode 11: dsp ?late? mode format[1:0]: serial audio i n terface data resolution 00: 24-bit resolution (d efau lt) 01: 20-bit resolution 10: 18-bit resolution 11: 16-bit resolution master cloc k and sample rate settin g regis t er (creg 3 [7:0 ]) creg 3 [ 7 :0 ] b i t 7 b i t 6 b i t 5 b i t 4 b i t 3 b i t 2 b i t 1 b i t 0 addre ss 7?h03 res e r v e d c k s e t [ 3 : 0 ] def a ult valu e 0 0 0 0 0 0 0 0 ckset[3:0]: the internal operation of AV2636 i s affected by the relations between mck freque ncy an d input audio sample rate. the co rre ct setting of the s e 4-bit base d on the relat i ons ensure s the correct op erati on of the device. the follo wing tabl e sh ows the value s of the 4-bit. ckset [3:0] for various clock an d sample rate sam p le rat e (kh z ) mck (mh z ) ckset [3: 0 ] 3 2 / 4 4 . 1 / 4 8 8 . 1 9 2 / 1 1 . 2 8 9 6 / 1 2 . 2 8 8 2 5 6 f s 0 0 0 0 1x speed 3 2 / 4 4 . 1 / 4 8 12.288/1 6 .93 4 / 1 8 . 4 3 2 3 8 4 f s 1 0 0 0 8 8 . 2 / 9 6 11.289 6/12.2 8 8 1 2 8 f s 0 0 0 1 8 8 . 2 / 9 6 16.934 4/18.4 3 2 1 9 2 f s 1 0 0 1 8 8 . 2 / 9 6 22.579 2/24.5 7 6 2 5 6 f s 0 0 1 0 2x speed 8 8 . 2 / 9 6 33.868 8/36.8 6 4 3 8 4 f s 1 0 1 0 1 9 2 1 2 . 2 8 8 6 4 f s 0 0 1 1 1 9 2 1 8 . 4 3 2 9 6 f s 1 0 1 1 1 9 2 2 4 . 5 7 6 1 2 8 f s 0 1 0 0 1 9 2 3 6 . 8 6 4 1 9 2 f s 1 1 0 0 1 9 2 4 9 . 1 5 2 2 5 6 f s 0 1 0 1 4x speed 1 9 2 7 3 . 7 2 8 3 8 4 f s 1 1 0 1 avs technol ogy, inc. 11-16 august 18, 2004 w w w . av s t ec h.c o m
a v 2636 produc t datas h eet d i gita l filter ch arac ter i stic s the digital interpolatio n filters have sm all passban d ripple s and large sto pba n d attenuation s . there are three types o f filters that are impleme n ted for di ffere nt sample mo de (1x/2x/4x) and mck re lations. th e sele ction of the filters dep end s on the operation mo de of the device, auto-dete c t mode or p r ogra mmabl e mode. program m able m ode : filter sele ction i s shown in the followin g table . 20khz au dio passba nd is assume d. sample mode parameter conditio n min max unit passban d ri pple f < 0.45fs 0.03 db nor m al (1x ) stopband attenuatio n f > 0.55fs 60 db passban d ri pple f < 0.225f s 0.03 db dou b le (2x ) stopband attenuatio n f > 0.775f s 60 db passban d ri pple f < 0.112 5fs 0.03 db quad (4x) stopband attenuatio n f > 0.887 5fs 53 db auto-dete c t m ode : filter type is autom atically sele ct ed ba sed on the detected sample mo d e and mck relation s. the followi ng plots sh ow the digital filter re sp on se and cl ose r lo ok of the pa ssban d rippl e for normal spe ed mod e (1x), doubl e speed mo de (2x) and q uad spee d (4x). avs technol ogy, inc. 12-16 august 18, 2004 w w w . av s t ec h.c o m
a v 2636 produc t datas h eet avs technol ogy, inc. 13-16 august 18, 2004 w w w . av s t ec h.c o m
a v 2636 produc t datas h eet digital de- e mphasis ch a r a c te ristic the devi c e has a buil d in digital de- em phasis filter t hat can be ut ilized or bypassed in either auto-detect mode o r pro g r amma ble m ode. the cha r acte ri stic of t he filter for 4 4 .1khz sampl e freque ncy i s sh own as follows : ga i n (d b ) 0 db - 10 d b f r equenc y f1 = 3 . 1 8k h z f 2 =1 0.61k h z t 1 =50s t 1 =15s the filter re sp onse scale s with sam p le frequ en cy fs and is only ap plied to 1x sa mple sp eed mode. avs technol ogy, inc. 14-16 august 18, 2004 w w w . av s t ec h.c o m
a v 2636 produc t datas h eet reco mmen d ed appli c atio n co n n ectio n s av 26 36 gnd 7 vdd c1 0. 1uf c2 10uf sf sd sc aud i o data pr oc es s o r mut e mo de fm t c fm t d 1 2 3 10 11 12 13 8 ha rd w a re & s o f t war e contr o l + ao ut r ao ut l 10uf 10uf 6 9 vcm c3 0. 1uf c4 10uf + 5 ex t e r n a l l o w p a ss f ilte r s f o r l/r c h ann el 2.3v ? 3 . 6 v no t e s: 1. po w e r s u pp l y vdd s h o u ld be a c l e an a n a l o g po we r th at s e p a r a te d f r om s y s t e m digital po wer . 2. c 1 an d c 3 s hou ld b e p l ac ed as c l os e to th e a v 26 3 6 a s pos s i ble . 3. us e lo w e s r c a p a c i tor s f o r bet ter per f o r m anc e . recommended external low p a ss filter + 47k 2.2k 10k 10k 10k 1.0nf 680 pf 51 vi vo +vs -v s avs technol ogy, inc. 15-16 august 18, 2004 w w w . av s t ec h.c o m
a v 2636 produc t datas h eet pac k a g e info rm atio n 14 8 1 7 b e e h d a a1 se a t in g pl an e c . h x 4 5 ? 14 p i n s o i c 3 . 9 m m body w i d e l dimensions (mm) dimensions (inche s) sy mbols m i n m a x m i n m a x a 1 . 3 5 1 . 7 5 0 . 0 5 3 2 0 . 0 6 8 8 a 1 0 . 1 0 0 . 2 5 0 . 0 0 4 0 0 . 0 0 9 8 b 0 . 3 3 0 . 5 1 0 . 0 1 3 0 0 . 0 2 0 0 c 0 . 1 9 0 . 2 5 0 . 0 0 7 5 0 . 0 0 9 8 d 8 . 5 5 8 . 7 5 0 . 3 3 6 7 0 . 3 4 4 4 e 3 . 8 0 4 . 0 0 0 . 1 4 9 7 0 . 1 5 7 4 e 1.27 bsc 0.05 bsc h 5 . 8 6 . 2 0 . 2 2 8 4 0 . 2 4 4 0 h 0 . 2 5 0 . 5 0 . 0 0 9 9 0 . 0 1 9 6 l 0 . 4 0 1 . 2 7 0 . 0 1 6 0 0 . 0 5 0 0 . 0 ? 8 ? 0 ? 8 ? note: the pa ckage meets jede c.95, ms-01 2 . refer it for further d e tails. import a n t n o tice : avs technolog y, inc. believes that the info rmatio n contained in t h e document is a ccurate and reliable. ho w e ver, th e information is provided ?as is? w i thout an y kind of w a rrant y. av s reserves the right to change the product and th e document w i thout prior noti ce. customer s ar e advised to obtain the latest ver s ion of the r e le vant infor m ation befor e placing or der . no liability is assumed by avs for infringement of an y pate n t, intellectual propert y , or other rights i n the application that use this product and informa t ion contained herein. avs technolog y , inc. assumes no liability for an y kind of sequential damage due to the use of its pro duct. avs technol ogy, inc. 16-16 august 18, 2004 w w w . av s t ec h.c o m

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