MT8870D/MT8870D-1 Integrated DTMF Receiver

Transcription

1 ISO 2 -MOS MT8870/MT Intgratd TMF Rcivr Faturs omplt TMF Rcivr ow powr consumption Intrnal gain stting amplifir Adjustabl guard tim ntral offic quality Powr-down mod Inhibit mod Backward compatibl with MT8870/MT Applications Rcivr systm for British Tlcom (BT) or EPT Spc (MT8870-1) Paging systms Rpatr systms/mobil radio rdit card systms Rmot control Prsonal computrs Tlphon answring machin Ordring Information MT8870E/E-1 18 Pin Plastic IP MT8870S/S-1 18 Pin SOI MT8870N/N-1 20 Pin SSOP -40 to +85 scription ISSUE 5 March 1997 Th MT8870/MT is a complt TMF rcivr intgrating both th bandsplit filtr and digital dcodr functions. Th filtr sction uss switchd capacitor tchniqus for high and low group filtrs; th dcodr uss digital counting tchniqus to dtct and dcod all 16 TMF tonpairs into a 4-bit cod. Extrnal componnt count is minimizd by on chip provision of a diffrntial input amplifir, clock oscillator and latchd thr-stat bus intrfac. V VSS VRf INH PWN Bias ircuit VRf Buffr IN + IN - hip Powr hip Bias ial Ton Filtr High Group Filtr Zro rossing tctors igital tction Algorithm od onvrtr and atch Q1 Q2 Q3 GS ow Group Filtr Q4 to all hip locks St GT String ogic OS1 OS2 St/GT ESt ST TOE Figur 1 - Functional Block iagram 4-11

2 MT8870/MT ISO 2 -MOS IN+ IN- GS VRf INH PWN OS1 OS2 VSS V St/GT ESt St Q4 Q3 Q2 Q1 TOE IN+ IN- GS VRf INH PWN N OS1 OS2 VSS V St/GT ESt St N Q4 Q3 Q2 Q1 TOE Pin scription 18 PIN PASTI IP/SOI Figur 2 - Pin onnctions 20 PIN SSOP Pin # Nam scription 1 1 IN+ Non-Invrting Op-Amp (Input). 2 2 IN- Invrting Op-Amp (Input). 3 3 GS Gain Slct. Givs accss to output of front nd diffrntial amplifir for connction of fdback rsistor. 4 4 V Rf Rfrnc Voltag (Output). Nominally V /2 is usd to bias inputs at mid-rail (s Fig. 6 and Fig. 10). 5 5 INH Inhibit (Input). ogic high inhibits th dtction of tons rprsnting charactrs A, B, and. This pin input is intrnally pulld down. 6 6 PWN Powr own (Input). Activ high. Powrs down th dvic and inhibits th oscillator. This pin input is intrnally pulld down. 7 8 OS1 lock (Input). 8 9 OS2 lock (Output). A MHz crystal connctd btwn pins OS1 and OS2 complts th intrnal oscillator circuit V SS Ground (Input). 0V typical TOE Thr Stat Output Enabl (Input). ogic high nabls th outputs Q1-Q4. This pin is pulld up intrnally Q1-Q4 Thr Stat ata (Output). Whn nabld by TOE, provid th cod corrsponding to th last valid ton-pair rcivd (s Tabl 1). Whn TOE is logic low, th data outputs ar high impdanc St layd String (Output).Prsnts a logic high whn a rcivd ton-pair has bn rgistrd and th output latch updatd; rturns to logic low whn th voltag on St/GT falls blow V TSt ESt Early String (Output). Prsnts a logic high onc th digital algorithm has dtctd a valid ton pair (signal condition). Any momntary loss of signal condition will caus ESt to rturn to a logic low St/GT String Input/Guard tim (Output) Bidirctional. A voltag gratr than V TSt dtctd at St causs th dvic to rgistr th dtctd ton pair and updat th output latch. A voltag lss than V TSt frs th dvic to accpt a nw ton pair. Th GT output acts to rst th xtrnal string tim-constant; its stat is a function of ESt and th voltag on St V Positiv powr supply (Input). +5V typical. 7, 16 N No onnction. 4-12

3 ISO 2 -MOS MT8870/MT Functional scription V Th MT8870/MT monolithic TMF rcivr offrs small siz, low powr consumption and high prformanc. Its architctur consists of a bandsplit filtr sction, which sparats th high and low group tons, followd by a digital counting sction which vrifis th frquncy and duration of th rcivd tons bfor passing th corrsponding cod to th output bus. V St/GT ESt St R v c Filtr Sction Sparation of th low-group and high group tons is achivd by applying th TMF signal to th inputs of two sixth-ordr switchd capacitor bandpass filtrs, th bandwidths of which corrspond to th low and high group frquncis. Th filtr sction also incorporats notchs at 350 and 440 Hz for xcptional dial ton rjction (s Figur 3). Each filtr output is followd by a singl ordr switchd capacitor filtr sction which smooths th signals prior to limiting. imiting is prformd by high-gain comparators which ar providd with hystrsis to prvnt dtction of unwantd low-lvl signals. Th outputs of th comparators provid full rail logic swings at th frquncis of th incoming TMF signals. codr Sction Following th filtr sction is a dcodr mploying digital counting tchniqus to dtrmin th frquncis of th incoming tons and to vrify that thy corrspond to standard TMF frquncis. A complx avraging algorithm protcts against ton simulation by xtranous signals such as voic whil 0 10 MT8870/ MT Figur 4 - Basic String ircuit providing tolranc to small frquncy dviations and variations. This avraging algorithm has bn dvlopd to nsur an optimum combination of immunity to talk-off and tolranc to th prsnc of intrfring frquncis (third tons) and nois. Whn th dtctor rcognizs th prsnc of two valid tons (this is rfrrd to as th signal condition in som industry spcifications) th Early String (ESt) output will go to an activ stat. Any subsqunt loss of signal condition will caus ESt to assum an inactiv stat (s String ircuit ). String ircuit t GTA =(R)In(V /V TSt ) t GTP =(R)In[V /(V -V TSt )] Bfor rgistration of a dcodd ton pair, th rcivr chcks for a valid signal duration (rfrrd to as charactr rcognition condition). This chck is prformd by an xtrnal R tim constant drivn by ESt. A logic high on ESt causs v c (s Figur 4) to ris as th capacitor dischargs. Providd signal PREISE IA TONES X=350 Hz Y=440 Hz ATTENUATION (db) TMF TONES A=697 Hz B=770 Hz =852 Hz =941 Hz E=1209 Hz F=1336 Hz G=1477 Hz H=1633 Hz 50 1kHz X Y A B E F G H FREQUENY (Hz) Figur 3 - Filtr Rspons 4-13

4 MT8870/MT ISO 2 -MOS condition is maintaind (ESt rmains high) for th validation priod (t GTP ), v c rachs th thrshold (V TSt ) of th string logic to rgistr th ton pair, latching its corrsponding 4-bit cod (s Tabl 1) into th output latch. At this point th GT output is activatd and drivs v c to V. GT continus to driv high as long as ESt rmains high. Finally, aftr a short dlay to allow th output latch to sttl, th dlayd string output flag (St) gos high, signalling that a rcivd ton pair has bn rgistrd. Th contnts of th output latch ar mad availabl on th 4-bit output bus by raising th thr stat control input (TOE) to a logic high. Th string circuit works in rvrs to validat th intrdigit paus btwn signals. Thus, as wll as rjcting signals too short to b considrd valid, th rcivr will tolrat signal intrruptions (dropout) too short to b considrd a valid paus. This facility, togthr with th capability of slcting th string tim constants xtrnally, allows th dsignr to tailor prformanc to mt a wid varity of systm rquirmnts. Guard Tim Adjustmnt In many situations not rquiring slction of ton duration and intrdigital paus, th simpl string circuit shown in Figur 4 is applicabl. omponnt valus ar chosn according to th formula: t RE =t P +t GTP t I =t A +t GTA Th valu of t P is a dvic paramtr (s Figur 11) and t RE is th minimum signal duration to b rcognizd by th rcivr. A valu for of 0.1 µf is V St/GT ESt V St/GT 1 R 1 R 2 1 t GTP =(R P 1 )In[V /(V -V TSt )] t GTA =(R 1 1 )In(V /V TSt ) R P =(R 1 R 2 )/(R 1 +R 2 ) a) dcrasing t GTP ; (t GTP <t GTA ) t GTP =(R 1 1 )In[V /(V -V TSt )] t GTA =(R P 1 )In(V /V TSt ) R P =(R 1 R 2 )/(R 1 +R 2 ) igit TOE INH ESt Q 4 Q 3 Q 2 Q 1 ANY X H Z Z Z Z 1 H X H H X H H X H H X H H X H H X H H X H H X H H X H H X H * H X H # H X H A H H B H H H H H H A H H B H H undtctd, th output cod will rmain th sam as th H H prvious dtctd cod H H Tabl 1. Functional cod Tabl =OGI OW, H=OGI HIGH, Z=HIGH IMPEANE X = ON T ARE rcommndd for most applications, laving R to b slctd by th dsignr. iffrnt string arrangmnts may b usd to slct indpndntly th guard tims for ton prsnt (t GTP ) and ton absnt (t GTA ). This may b ncssary to mt systm spcifications which plac both accpt and rjct limits on both ton duration and intrdigital paus. Guard tim adjustmnt also allows th dsignr to tailor systm paramtrs such as talk off and nois immunity. Incrasing t RE improvs talk-off prformanc sinc it rducs th probability that tons simulatd by spch will maintain signal condition long nough to b rgistrd. Altrnativly, a rlativly short t RE with a long t O would b appropriat for xtrmly noisy nvironmnts whr fast acquisition tim and immunity to ton drop-outs ar rquird. sign information for guard tim adjustmnt is shown in Figur 5. R 1 R 2 ESt b) dcrasing t GTA ; (t GTP >t GTA ) Figur 5 - Guard Tim Adjustmnt 4-14

5 ISO 2 -MOS MT8870/MT Powr-down and Inhibit Mod A logic high applid to pin 6 (PWN) will powr down th dvic to minimiz th powr consumption in a standby mod. It stops th oscillator and th functions of th filtrs. Inhibit mod is nabld by a logic high input to th pin 5 (INH). It inhibits th dtction of tons rprsnting charactrs A, B,, and. Th output cod will rmain th sam as th prvious dtctd cod (s Tabl 1). 1 R 1 2 R 4 IN+ IN- R 5 GS MT8870/ MT iffrntial Input onfiguration R 3 R 2 V Rf Th input arrangmnt of th MT8870/MT provids a diffrntial-input oprational amplifir as wll as a bias sourc (V Rf ) which is usd to bias th inputs at mid-rail. Provision is mad for connction of a fdback rsistor to th op-amp output (GS) for adjustmnt of gain. In a singl-ndd configuration, th input pins ar connctd as shown in Figur 10 with th op-amp connctd for unity gain and V Rf biasing th input at 1 / 2 V. Figur 6 shows th diffrntial configuration, which prmits th adjustmnt of gain with th fdback rsistor R 5. rystal Oscillator Th intrnal clock circuit is compltd with th addition of an xtrnal MHz crystal and is normally connctd as shown in Figur 10 (Singl- Endd Input onfiguration). Howvr, it is possibl to configur svral MT8870/MT dvics mploying only a singl oscillator crystal. Th oscillator output of th first dvic in th chain is coupld through a 30 pf capacitor to th oscillator input (OS1) of th nxt dvic. Subsqunt dvics ar connctd in a similar fashion. Rfr to Figur 7 for dtails. Th problms associatd with unbalancd loading ar not a concrn with th arrangmnt shown, i.., prcision balancing capacitors ar not rquird. iffrntial Input Amplifir 1 = 2 =10 nf R 1 =R 4 =R 5 =100 kω All rsistors ar ±1% tolranc. R 2 =60kΩ, R 3 =37.5 kω All capacitors ar ±5% tolranc. R 3 = R 2 R 5 R 2 +R 5 VOTAGE GAIN (A v diff)= R 5 R 1 INPUT IMPEANE (Z INIFF ) = 2 R Figur 6 - iffrntial Input onfiguration OS1 OS2 X-tal 1 ωc Figur 7 - Oscillator onnction 2 OS2 OS1 To OS1 of nxt MT8870/MT =30 pf X-tal= MHz Paramtr Unit Rsonator R1 Ohms mh pf pf Qm f % ±0.2% Tabl 2. Rcommndd Rsonator Spcifications Not: Qm=quality factor of R modl, i.., 1/2ΠƒR

6 MT8870/MT ISO 2 -MOS Applications REEIVER SYSTEM FOR BRITISH TEEOM SPE POR 1151 t GTP =(R P 1 )In[V /(V -V TSt )] Th circuit shown in Fig. 9 illustrats th us of MT dvic in a typical rcivr systm. BT Spc dfins th input signals lss than -34 dbm as th non-oprat lvl. This condition can b attaind by choosing a suitabl valus of R 1 and R 2 to provid 3 db attnuation, such that -34 dbm input signal will corrspond to -37 dbm at th gain stting pin GS of MT As shown in th diagram, th componnt valus of R 3 and 2 ar th guard tim rquirmnts whn th total componnt tolranc is 6%. For bttr prformanc, it is rcommndd to us th non-symmtric guard tim circuit in Fig. 8. V St/GT ESt R 1 1 R 2 t GTA =(R 1 1 )In(V /V TSt ) R P =(R 1 R 2 )/(R 1 +R 2 ) Nots: R 1 =368K Ω ± 1% R 2 =2.2M Ω ± 1% 1 =100nF ± 5% Figur 8 - Non-Symmtric Guard Tim ircuit V 1 TMF Input R 1 MT IN+ IN- V St/GT GS ESt R 3 R 2 V Rf INH St Q4 PWN Q3 X 1 OS 1 OS 2 V SS Q2 Q1 TOE NOTES: R 1 = 102KΩ ± 1% R 2 = 71.5KΩ ± 1% R 3 = 390KΩ ±1 % 1, 2 = 100 nf ± 5% X 1 = MHz ± 0.1% V = 5.0V ± 5% Figur 9 - Singl-Endd Input onfiguration for BT or EPT Spc 4-16

7 ISO 2 -MOS MT8870/MT Absolut Maximum Ratings Paramtr Symbol Min Max Units 1 Powr Supply Voltag V 7 V 2 Voltag on any pin V I V SS -0.3 V +0.3 V 3 urrnt at any pin (othr than supply) I I 10 ma 4 Storag tmpratur T STG Packag powr dissipation P 500 mw Excding ths valus may caus prmannt damag. Functional opration undr ths conditions is not implid. rat abov 75 at 16 mw /. All lads soldrd to board. Rcommndd Oprating onditions - Voltags ar with rspct to ground (V SS ) unlss othrwis statd. Paramtr Sym Min Typ Max Units Tst onditions 1 Powr Supply Voltag V V 2 Oprating Tmpratur T O rystal/lock Frquncy fc MHz 4 rystal/lock Frq.Tolranc fc ±0.1 % Typical figurs ar at 25 and ar for dsign aid only: not guarantd and not subjct to production tsting. Elctrical haractristics - V =5.0V± 5%, V SS =0V, -40 T O +85, unlss othrwis statd. haractristics Sym Min Typ Max Units Tst onditions 1 S Standby supply currnt I Q µa PWN=V 2 U P Oprating supply currnt I ma 3 P Y Powr consumption P O 15 mw fc= MHz 4 High lvl input V IH 3.5 V V =5.0V 5 ow lvl input voltag V I 1.5 V V =5.0V 6 I Input lakag currnt I IH /I I 0.1 µa V IN =V SS or V 7 N Pull up (sourc) currnt I SO µa TOE (pin 10)=0, P V U =5.0V 8 T Pull down (sink) currnt I S SI µa INH=5.0V, PWN=5.0V, V =5.0V 9 Input impdanc (IN+, IN-) R IN 10 1 khz 10 String thrshold voltag V TSt V V = 5.0V 11 ow lvl output voltag V O V SS V No load 12 O U High lvl output voltag V OH V V No load 13 T Output low (sink) currnt I O ma V OUT =0.4 V 14 P U Output high (sourc) currnt I OH ma V OUT =4.6 V 15 T S V Rf output voltag V Rf V No load, V = 5.0V 16 V Rf output rsistanc R OR 1 kω Typical figurs ar at 25 and ar for dsign aid only: not guarantd and not subjct to production tsting. 4-17

8 MT8870/MT ISO 2 -MOS Oprating haractristics - V =5.0V±5%, V SS =0V, -40 T O +85,unlss othrwis statd. Gain Stting Amplifir haractristics Sym Min Typ Max Units Tst onditions 1 Input lakag currnt I IN 100 na V SS V IN V 2 Input rsistanc R IN 10 MΩ 3 Input offst voltag V OS 25 mv 4 Powr supply rjction PSRR 50 db 1 khz 5 ommon mod rjction MRR 40 db 0.75 V V IN 4.25 V biasd at V Rf =2.5 V 6 opn loop voltag gain A VO 32 db 7 Unity gain bandwidth f 0.30 MHz 8 Output voltag swing V O 4.0 V pp oad 100 kω to V GS 9 Maximum capacitiv load (GS) 100 pf 10 Rsistiv load (GS) R 50 kω 11 ommon mod rang V M 2.5 V pp No oad MT8870 A Elctrical haractristics - V =5.0V ±5%, V SS =0V, -40 T O +85, using Tst ircuit shown in Figur 10. haractristics Sym Min Typ Max Units Nots* 1 Valid input signal lvls (ach ton of composit signal) dbm 1,2,3,5,6, mv RMS 1,2,3,5,6,9 2 Ngativ twist accpt 8 db 2,3,6,9,12 3 Positiv twist accpt 8 db 2,3,6,9,12 4 Frquncy dviation accpt ±1.5% ± 2 Hz 2,3,5,9 5 Frquncy dviation rjct ±3.5% 2,3,5,9 6 Third ton tolranc -16 db 2,3,4,5,9,10 7 Nois tolranc -12 db 2,3,4,5,7,9,10 8 ial ton tolranc +22 db 2,3,4,5,8,9,11 Typical figurs ar at 25 and ar for dsign aid only: not guarantd and not subjct to production tsting. *NOTES 1. dbm= dcibls abov or blow a rfrnc powr of 1 mw into a 600 ohm load. 2. igit squnc consists of all TMF tons. 3. Ton duration= 40 ms, ton paus= 40 ms. 4. Signal condition consists of nominal TMF frquncis. 5. Both tons in composit signal hav an qual amplitud. 6. Ton pair is dviatd by ±1.5 %± 2 Hz. 7. Bandwidth limitd (3 khz ) Gaussian nois. 8. Th prcis dial ton frquncis ar (350 Hz and 440 Hz) ± 2 %. 9. For an rror rat of bttr than 1 in 10, Rfrncd to lowst lvl frquncy componnt in TMF signal. 11. Rfrncd to th minimum valid accpt lvl. 12. Guarantd by dsign and charactrization. 4-18

9 ISO 2 -MOS MT8870/MT MT A Elctrical haractristics - V =5.0V±5%, V SS =0V, -40 T O +85, using Tst ircuit shown in Figur haractristics Sym Min Typ Max Units Nots* Valid input signal lvls (ach ton of composit signal) 2 Input Signal vl Rjct dbm Tstd at V =5.0V mv RMS 1,2,3,5,6,9-37 dbm Tstd at V =5.0V 10.9 mv RMS 1,2,3,5,6,9 3 Ngativ twist accpt 8 db 2,3,6,9,13 4 Positiv twist accpt 8 db 2,3,6,9,13 5 Frquncy dviation accpt ±1.5%± 2 Hz 2,3,5,9 6 Frquncy dviation rjct ±3.5% 2,3,5,9 7 Third zon tolranc db 2,3,4,5,9,12 8 Nois tolranc -12 db 2,3,4,5,7,9,10 9 ial ton tolranc +22 db 2,3,4,5,8,9,11 Typical figurs ar at 25 and ar for dsign aid only: not guarantd and not subjct to production tsting. *NOTES 1. dbm= dcibls abov or blow a rfrnc powr of 1 mw into a 600 ohm load. 2. igit squnc consists of all TMF tons. 3. Ton duration= 40 ms, ton paus= 40 ms. 4. Signal condition consists of nominal TMF frquncis. 5. Both tons in composit signal hav an qual amplitud. 6. Ton pair is dviatd by ±1.5 %± 2 Hz. 7. Bandwidth limitd (3 khz ) Gaussian nois. 8. Th prcis dial ton frquncis ar (350 Hz and 440 Hz) ± 2 %. 9. For an rror rat of bttr than 1 in 10, Rfrncd to lowst lvl frquncy componnt in TMF signal. 11. Rfrncd to th minimum valid accpt lvl. 12. Rfrncd to Fig. 10 input TMF ton lvl at -25dBm (-28dBm at GS Pin) intrfrnc frquncy rang btwn Hz. 13. Guarantd by dsign and charactrization. 4-19

10 MT8870/MT ISO 2 -MOS A Elctrical haractristics - V =5.0V±5%, V SS =0V, -40 To +85, using Tst ircuit shown in Figur 10. haractristics Sym Min Typ Max Units onditions 1 Ton prsnt dtct tim t P ms Not 1 2 T Ton absnt dtct tim t A ms Not 1 3 I M Ton duration accpt t RE 40 ms Not 2 4 I N Ton duration rjct t RE 20 ms Not 2 5 G Intrdigit paus accpt t I 40 ms Not 2 6 Intrdigit paus rjct t O 20 ms Not 2 7 Propagation dlay (St to Q) t PQ 8 11 µs TOE=V 8 O Propagation dlay (St to St) t PSt µs TOE=V 9 U T Output data st up (Q to St) t QSt 3.4 µs TOE=V 10 P U Propagation dlay (TOE to Q ENABE) t PTE 50 ns load of 10 kω, T 50 pf 11 S Propagation dlay (TOE to Q ISABE) t PT 300 ns load of 10 kω, 50 pf 12 P Powr-up tim t PU 30 ms Not 3 13 W N Powr-down tim t P 20 ms 14 rystal/clock frquncy f MHz 15 lock input ris tim t H 110 ns Ext. clock 16 O lock input fall tim t H 110 ns Ext. clock 17 K lock input duty cycl % Ext. clock 18 apacitiv load (OS2) O 30 pf Typical figurs ar at 25 and ar for dsign aid only: not guarantd and not subjct to production tsting. *NOTES: 1. Usd for guard-tim calculation purposs only. 2. Ths, usr adjustabl paramtrs, ar not dvic spcifications. Th adjustabl sttings of ths minimums and maximums ar rcommndations basd upon ntwork rquirmnts. 3. With valid ton prsnt at input, t PU quals tim from PWN going low until ESt going high. V TMF Input 1 R 1 MT8870/MT X-tal R 2 IN+ IN- GS V Rf INH PWN OS 1 OS 2 V SS V St/GT ESt St Q4 Q3 Q2 Q1 TOE R 3 NOTES: R 1,R 2 =100KΩ ± 1% R 3 =300KΩ ± 1% 1, 2 =100 nf ± 5% X-tal= MHz ± 0.1% Figur 10 - Singl-Endd Input onfiguration 4-20

11 ISO 2 -MOS MT8870/MT EVENTS A B E F G t RE t RE t I t O V in TONE #n TONE #n + 1 TONE #n + 1 t P ta ESt t GTP t GTA St/GT V TSt Q 1 -Q 4 t PQ EOE TONE # (n-1) t QSt HIGH IMPEANE # n # (n + 1) t PSr St TOE t PT t PTE EXPANATION OF EVENTS A) TONE BURSTS ETETE, TONE URATION INVAI, OUTPUTS NOT UPATE. B) TONE #n ETETE, TONE URATION VAI, TONE EOE AN ATHE IN OUTPUTS ) EN OF TONE #n ETETE, TONE ABSENT URATION VAI, OUTPUTS REMIAN ATHE UNTI NEXT VAI TONE. ) OUTPUTS SWITHE TO HIGH IMPEANE STATE. E) TONE #n + 1 ETETE, TONE URATION VAI, TONE EOE AN ATHE IN OUTPUTS (URRENTY HIGH IMPEANE). F) AEPTABE ROPOUT OF TONE #n + 1, TONE ABSENT URATION INVAI, OUTPUTS REMAIN ATHE. G) EN OF TONE #n + 1 ETETE, TONE ABSENT URATION VAI, OUTPUTS REMAIN ATHE UNTI NEXT VAI TONE. EXPANATION OF SYMBOS V in ESt St/GT Q 1 -Q 4 St TOE t RE t RE t I t O t P t A t GTP t GTA TMF OMPOSITE INPUT SIGNA. EARY STEERING OUTPUT. INIATES ETETION OF VAI TONE FREQUENIES. STEERING INPUT/GUAR TIME OUTPUT. RIVES EXTERNA R TIMING IRUIT. 4-BIT EOE TONE OUTPUT. EAYE STEERING OUTPUT. INIATES THAT VAI FREQUENIES HAVE BEEN PRESENT/ABSENT FOR THE REQUIRE GUAR TIME THUS ONSTITUTING A VAI SIGNA. TONE OUTPUT ENABE (INPUT). A OW EVE SHIFTS Q 1 -Q 4 TO ITS HIGH IMPEANE STATE. MAXIMUM TMF SIGNA URATION NOT ETEE AS VAI MINIMUM TMF SIGNA URATION REQUIRE FOR VAI REOGNITION MAXIMUM TIME BETWEEN VAI TMF SIGNAS. MAXIMUM AOWABE ROP OUT URING VAI TMF SIGNA. TIME TO ETET THE PRESENE OF VAI TMF SIGNAS. TIME TO ETET THE ABSENE OF VAI TMF SIGNAS. GUAR TIME, TONE PRESENT. GUAR TIME, TONE ABSENT. Figur 11 - Timing iagram 4-21

12 MT8870/MT ISO 2 -MOS Nots: 4-22

13 Packag Outlins E n-2 n-1 n A b 2 A B Nots: 1 1) Not to scal 2) imnsions in inchs 3) (imnsions in millimtrs) b Plastic ual-in-in Packags (PIP) - E Suffix 8-Pin 16-Pin 18-Pin 20-Pin IM Plastic Plastic Plastic Plastic Min Max Min Max Min Max Min Max A (5.33) (5.33) (5.33) (5.33) (2.92) (4.95) (2.92) (4.95) (2.92) (4.95) (2.92) (4.95) b (0.356) (0.558) (0.356) (0.558) (0.356) (0.558) (0.356) (0.558) b (1.14) (1.77) (1.14) (1.77) (1.14) (1.77) (1.14) (1.77) (0.203) (0.356) (0.203) 0.014(0.356) (0.203) (0.356) (0.203) (0.356) (9.02) (10.16) (19.81) (20.32) (22.35) (23.37) (24.89) (26.9) (0.13) (0.13) (0.13) (0.13) E (7.62) (8.26) (7.62) (8.26) (7.62) (8.26) (7.62) (8.26) (6.10) (7.11) (6.10) (7.11) (6.10) (7.11) (6.10) (7.11) BS (2.54) BS (2.54) BS (2.54) BS (2.54) A BS (7.62) BS (7.62) BS (7.62) BS (7.62) (2.92) (3.81) (2.92) (3.81) (2.92) (3.81) (2.92) (3.81) B (10.92) (10.92) (10.92) (10.92) (1.52) (1.52) (1.52) (1.52) NOTE: ontrolling dimnsions in parnthsis ( ) ar in millimtrs. Gnral-8

14 Packag Outlins E n-2 n-1 n A α b 2 A B Nots: 1 1) Not to scal 2) imnsions in inchs 3) (imnsions in millimtrs) b Plastic ual-in-in Packags (PIP) - E Suffix 22-Pin 24-Pin 28-Pin 40-Pin IM Plastic Plastic Plastic Plastic Min Max Min Max Min Max Min Max A (5.33) (6.35) (6.35) (6.35) (3.18) (4.95) (3.18) (4.95) (3.18) (4.95) (3.18) (4.95) b (0.356) (0.558) (0.356) (0.558) (0.356) (0.558) (0.356) (0.558) b (1.15) (1.77) (0.77) (1.77) (0.77) (1.77) (0.77) (1.77) (0.204) (0.381) (0.204) (0.381) (0.204) (0.381) (0.204) (0.381) (26.67) (28.44) (29.3) (32.7) (35.1) (39.7) (50.3) (53.2) (0.13) (0.13) (0.13) (0.13) E (9.91) (10.92) (15.24) (17.02) (15.24) (17.02) (15.24) (17.02) E (7.37).330 (8.38) (8.39) (9.65) (12.32) (14.73) (12.32) (14.73) (12.32) (14.73) (6.25) (6.45) BS (2.54) BS (2.54) BS (2.54) BS (2.54) A BS (10.16) BS (15.24) BS (15.24) BS (15.24) A BS (7.62) B (10.92) (2.93) (4.06) (2.93) (5.08) (2.93) (5.08) (2.93) (5.08) α Shadd aras for 300 Mil Body Width 24 PIP only

15 Packag Outlins Pin 1 E A H 4 mils (lad coplanarity) A 1 Nots: 1) Not to scal 2) imnsions in inchs 3) (imnsions in millimtrs) 4) A & B Maximum dimnsions includ allowabl mold flash B IM 16-Pin 18-Pin 20-Pin 24-Pin 28-Pin Min Max Min Max Min Max Min Max Min Max A A B (10.1) (10.5) (11.35) (11.75) (12.60) (13.00) (15.2) (15.6) (17.7) (18.1) E BS (1.27 BS) BS (1.27 BS) BS (1.27 BS) BS (1.27 BS) BS (1.27 BS) H ad SOI Packag - S Suffix NOTES: 1. ontrolling dimnsions in parnthsis ( ) ar in millimtrs. 2. onvrtd inch dimnsions ar not ncssarily xact. Gnral-7

16 Packag Outlins Pin 1 E A H Nots: 1) Not to scal 2) imnsions in inchs 3) (imnsions in millimtrs) 4) Rf. JEE Standard M0-150/M0118 for 48 Pin 5) A & B Maximum dimnsions includ allowabl mold flash A 1 B im 20-Pin 24-Pin 28-Pin 48-Pin Min Max Min Max Min Max Min Max A (2) (2) (2) (2.41) (2.79) A (0.05) (0.05) (0.05) (0.2) (0.406) B 7 (0.22) 7 (0.22) 7 (0.22) (0.2) 5 (0.342) (0.21) (0.21) (0.21) (0.25) 0.27 (6.9) (7.5) 0.31 (7.9) 0.33 (8.5) 0.39 (9.9) 0.42 (10.5) 0.62 (15.75) 0.63 (16.00) E 0.2 (5.0) 0.22 (5.6) 0.2 (5.0) 0.22 (5.6) 0.2 (5.0) 0.22 (5.6) (7.39) (7.59) BS (0.635 BS) BS (0.635 BS) BS (0.635 BS) BS (0.635 BS) (1.65) (1.85) (1.65) (1.85) (1.65) (1.85) (2.26) (2.52) H 0.29 (7.4) 0.32 (8.2) 0.29 (7.4) 0.32 (8.2) 0.29 (7.4) 0.32 (8.2) (10.03) 0.42 (10.67) (0.55) (0.95) (0.55) (0.95) (0.55) (0.95) (1.02) Small Shrink Outlin Packag (SSOP) - N Suffix Gnral-11

17 Packag Outlins E n-2 n-1 n A b 2 A B Nots: 1 1) Not to scal 2) imnsions in inchs 3) (imnsions in millimtrs) b Plastic ual-in-in Packags (PIP) - E Suffix 8-Pin 16-Pin 18-Pin 20-Pin IM Plastic Plastic Plastic Plastic Min Max Min Max Min Max Min Max A (5.33) (5.33) (5.33) (5.33) (2.92) (4.95) (2.92) (4.95) (2.92) (4.95) (2.92) (4.95) b (0.356) (0.558) (0.356) (0.558) (0.356) (0.558) (0.356) (0.558) b (1.14) (1.77) (1.14) (1.77) (1.14) (1.77) (1.14) (1.77) (0.203) (0.356) (0.203) 0.014(0.356) (0.203) (0.356) (0.203) (0.356) (9.02) (10.16) (19.81) (20.32) (22.35) (23.37) (24.89) (26.9) (0.13) (0.13) (0.13) (0.13) E (7.62) (8.26) (7.62) (8.26) (7.62) (8.26) (7.62) (8.26) (6.10) (7.11) (6.10) (7.11) (6.10) (7.11) (6.10) (7.11) BS (2.54) BS (2.54) BS (2.54) BS (2.54) A BS (7.62) BS (7.62) BS (7.62) BS (7.62) (2.92) (3.81) (2.92) (3.81) (2.92) (3.81) (2.92) (3.81) B (10.92) (10.92) (10.92) (10.92) (1.52) (1.52) (1.52) (1.52) NOTE: ontrolling dimnsions in parnthsis ( ) ar in millimtrs. Gnral-8

18 Packag Outlins E n-2 n-1 n A α b 2 A B Nots: 1 1) Not to scal 2) imnsions in inchs 3) (imnsions in millimtrs) b Plastic ual-in-in Packags (PIP) - E Suffix 22-Pin 24-Pin 28-Pin 40-Pin IM Plastic Plastic Plastic Plastic Min Max Min Max Min Max Min Max A (5.33) (6.35) (6.35) (6.35) (3.18) (4.95) (3.18) (4.95) (3.18) (4.95) (3.18) (4.95) b (0.356) (0.558) (0.356) (0.558) (0.356) (0.558) (0.356) (0.558) b (1.15) (1.77) (0.77) (1.77) (0.77) (1.77) (0.77) (1.77) (0.204) (0.381) (0.204) (0.381) (0.204) (0.381) (0.204) (0.381) (26.67) (28.44) (29.3) (32.7) (35.1) (39.7) (50.3) (53.2) (0.13) (0.13) (0.13) (0.13) E (9.91) (10.92) (15.24) (17.02) (15.24) (17.02) (15.24) (17.02) E (7.37).330 (8.38) (8.39) (9.65) (12.32) (14.73) (12.32) (14.73) (12.32) (14.73) (6.25) (6.45) BS (2.54) BS (2.54) BS (2.54) BS (2.54) A BS (10.16) BS (15.24) BS (15.24) BS (15.24) A BS (7.62) B (10.92) (2.93) (4.06) (2.93) (5.08) (2.93) (5.08) (2.93) (5.08) α Shadd aras for 300 Mil Body Width 24 PIP only

19 Packag Outlins Pin 1 E A H 4 mils (lad coplanarity) A 1 Nots: 1) Not to scal 2) imnsions in inchs 3) (imnsions in millimtrs) 4) A & B Maximum dimnsions includ allowabl mold flash B IM 16-Pin 18-Pin 20-Pin 24-Pin 28-Pin Min Max Min Max Min Max Min Max Min Max A A B (10.1) (10.5) (11.35) (11.75) (12.60) (13.00) (15.2) (15.6) (17.7) (18.1) E BS (1.27 BS) BS (1.27 BS) BS (1.27 BS) BS (1.27 BS) BS (1.27 BS) H ad SOI Packag - S Suffix NOTES: 1. ontrolling dimnsions in parnthsis ( ) ar in millimtrs. 2. onvrtd inch dimnsions ar not ncssarily xact. Gnral-7

20 Packag Outlins Pin 1 E A H Nots: 1) Not to scal 2) imnsions in inchs 3) (imnsions in millimtrs) 4) Rf. JEE Standard M0-150/M0118 for 48 Pin 5) A & B Maximum dimnsions includ allowabl mold flash A 1 B im 20-Pin 24-Pin 28-Pin 48-Pin Min Max Min Max Min Max Min Max A (2) (2) (2) (2.41) (2.79) A (0.05) (0.05) (0.05) (0.2) (0.406) B 7 (0.22) 7 (0.22) 7 (0.22) (0.2) 5 (0.342) (0.21) (0.21) (0.21) (0.25) 0.27 (6.9) (7.5) 0.31 (7.9) 0.33 (8.5) 0.39 (9.9) 0.42 (10.5) 0.62 (15.75) 0.63 (16.00) E 0.2 (5.0) 0.22 (5.6) 0.2 (5.0) 0.22 (5.6) 0.2 (5.0) 0.22 (5.6) (7.39) (7.59) BS (0.635 BS) BS (0.635 BS) BS (0.635 BS) BS (0.635 BS) (1.65) (1.85) (1.65) (1.85) (1.65) (1.85) (2.26) (2.52) H 0.29 (7.4) 0.32 (8.2) 0.29 (7.4) 0.32 (8.2) 0.29 (7.4) 0.32 (8.2) (10.03) 0.42 (10.67) (0.55) (0.95) (0.55) (0.95) (0.55) (0.95) (1.02) Small Shrink Outlin Packag (SSOP) - N Suffix Gnral-11

21 Packag Outlins E n-2 n-1 n A b 2 A B Nots: 1 1) Not to scal 2) imnsions in inchs 3) (imnsions in millimtrs) b Plastic ual-in-in Packags (PIP) - E Suffix 8-Pin 16-Pin 18-Pin 20-Pin IM Plastic Plastic Plastic Plastic Min Max Min Max Min Max Min Max A (5.33) (5.33) (5.33) (5.33) (2.92) (4.95) (2.92) (4.95) (2.92) (4.95) (2.92) (4.95) b (0.356) (0.558) (0.356) (0.558) (0.356) (0.558) (0.356) (0.558) b (1.14) (1.77) (1.14) (1.77) (1.14) (1.77) (1.14) (1.77) (0.203) (0.356) (0.203) 0.014(0.356) (0.203) (0.356) (0.203) (0.356) (9.02) (10.16) (19.81) (20.32) (22.35) (23.37) (24.89) (26.9) (0.13) (0.13) (0.13) (0.13) E (7.62) (8.26) (7.62) (8.26) (7.62) (8.26) (7.62) (8.26) (6.10) (7.11) (6.10) (7.11) (6.10) (7.11) (6.10) (7.11) BS (2.54) BS (2.54) BS (2.54) BS (2.54) A BS (7.62) BS (7.62) BS (7.62) BS (7.62) (2.92) (3.81) (2.92) (3.81) (2.92) (3.81) (2.92) (3.81) B (10.92) (10.92) (10.92) (10.92) (1.52) (1.52) (1.52) (1.52) NOTE: ontrolling dimnsions in parnthsis ( ) ar in millimtrs. Gnral-8

22 Packag Outlins E n-2 n-1 n A α b 2 A B Nots: 1 1) Not to scal 2) imnsions in inchs 3) (imnsions in millimtrs) b Plastic ual-in-in Packags (PIP) - E Suffix 22-Pin 24-Pin 28-Pin 40-Pin IM Plastic Plastic Plastic Plastic Min Max Min Max Min Max Min Max A (5.33) (6.35) (6.35) (6.35) (3.18) (4.95) (3.18) (4.95) (3.18) (4.95) (3.18) (4.95) b (0.356) (0.558) (0.356) (0.558) (0.356) (0.558) (0.356) (0.558) b (1.15) (1.77) (0.77) (1.77) (0.77) (1.77) (0.77) (1.77) (0.204) (0.381) (0.204) (0.381) (0.204) (0.381) (0.204) (0.381) (26.67) (28.44) (29.3) (32.7) (35.1) (39.7) (50.3) (53.2) (0.13) (0.13) (0.13) (0.13) E (9.91) (10.92) (15.24) (17.02) (15.24) (17.02) (15.24) (17.02) E (7.37).330 (8.38) (8.39) (9.65) (12.32) (14.73) (12.32) (14.73) (12.32) (14.73) (6.25) (6.45) BS (2.54) BS (2.54) BS (2.54) BS (2.54) A BS (10.16) BS (15.24) BS (15.24) BS (15.24) A BS (7.62) B (10.92) (2.93) (4.06) (2.93) (5.08) (2.93) (5.08) (2.93) (5.08) α Shadd aras for 300 Mil Body Width 24 PIP only

23 Packag Outlins Pin 1 E A H 4 mils (lad coplanarity) A 1 Nots: 1) Not to scal 2) imnsions in inchs 3) (imnsions in millimtrs) 4) A & B Maximum dimnsions includ allowabl mold flash B IM 16-Pin 18-Pin 20-Pin 24-Pin 28-Pin Min Max Min Max Min Max Min Max Min Max A A B (10.1) (10.5) (11.35) (11.75) (12.60) (13.00) (15.2) (15.6) (17.7) (18.1) E BS (1.27 BS) BS (1.27 BS) BS (1.27 BS) BS (1.27 BS) BS (1.27 BS) H ad SOI Packag - S Suffix NOTES: 1. ontrolling dimnsions in parnthsis ( ) ar in millimtrs. 2. onvrtd inch dimnsions ar not ncssarily xact. Gnral-7

24 Packag Outlins Pin 1 E A H Nots: 1) Not to scal 2) imnsions in inchs 3) (imnsions in millimtrs) 4) Rf. JEE Standard M0-150/M0118 for 48 Pin 5) A & B Maximum dimnsions includ allowabl mold flash A 1 B im 20-Pin 24-Pin 28-Pin 48-Pin Min Max Min Max Min Max Min Max A (2) (2) (2) (2.41) (2.79) A (0.05) (0.05) (0.05) (0.2) (0.406) B 7 (0.22) 7 (0.22) 7 (0.22) (0.2) 5 (0.342) (0.21) (0.21) (0.21) (0.25) 0.27 (6.9) (7.5) 0.31 (7.9) 0.33 (8.5) 0.39 (9.9) 0.42 (10.5) 0.62 (15.75) 0.63 (16.00) E 0.2 (5.0) 0.22 (5.6) 0.2 (5.0) 0.22 (5.6) 0.2 (5.0) 0.22 (5.6) (7.39) (7.59) BS (0.635 BS) BS (0.635 BS) BS (0.635 BS) BS (0.635 BS) (1.65) (1.85) (1.65) (1.85) (1.65) (1.85) (2.26) (2.52) H 0.29 (7.4) 0.32 (8.2) 0.29 (7.4) 0.32 (8.2) 0.29 (7.4) 0.32 (8.2) (10.03) 0.42 (10.67) (0.55) (0.95) (0.55) (0.95) (0.55) (0.95) (1.02) Small Shrink Outlin Packag (SSOP) - N Suffix Gnral-11

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27 For mor information about all Zarlink products visit our Wb Sit at Information rlating to products and srvics furnishd hrin by Zarlink Smiconductor Inc. trading as Zarlink Smiconductor or its subsidiaris (collctivly Zarlink ) is blivd to b rliabl. Howvr, Zarlink assums no liability for rrors that may appar in this publication, or for liability othrwis arising from th application or us of any such information, product or srvic or for any infringmnt of patnts or othr intllctual proprty rights ownd by third partis which may rsult from such application or us. Nithr th supply of such information or purchas of product or srvic convys any licns, ithr xprss or implid, undr patnts or othr intllctual proprty rights ownd by Zarlink or licnsd from third partis by Zarlink, whatsovr. Purchasrs of products ar also hrby notifid that th us of product in crtain ways or in combination with Zarlink, or non-zarlink furnishd goods or srvics may infring patnts or othr intllctual proprty rights ownd by Zarlink. This publication is issud to provid information only and (unlss agrd by Zarlink in writing) may not b usd, applid or rproducd for any purpos nor form part of any ordr or contract nor to b rgardd as a rprsntation rlating to th products or srvics concrnd. Th products, thir spcifications, srvics and othr information apparing in this publication ar subjct to chang by Zarlink without notic. No warranty or guarant xprss or implid is mad rgarding th capability, prformanc or suitability of any product or srvic. Information concrning possibl mthods of us is providd as a guid only and dos not constitut any guarant that such mthods of us will b satisfactory in a spcific pic of quipmnt. It is th usr s rsponsibility to fully dtrmin th prformanc and suitability of any quipmnt using such information and to nsur that any publication or data usd is up to dat and has not bn suprsdd. Manufacturing dos not ncssarily includ tsting of all functions or paramtrs. Ths products ar not suitabl for us in any mdical products whos failur to prform may rsult in significant injury or dath to th usr. All products and matrials ar sold and srvics providd subjct to Zarlink s conditions of sal which ar availabl on rqust. Purchas of Zarlink s I 2 componnts convys a licnc undr th Philips I 2 Patnt rights to us ths componnts in and I 2 Systm, providd that th systm conforms to th I 2 Standard Spcification as dfind by Philips. Zarlink, Z and th Zarlink Smiconductor logo ar tradmarks of Zarlink Smiconductor Inc. opyright Zarlink Smiconductor Inc. All Rights Rsrvd. TEHNIA OUMENTATION - NOT FOR RESAE