a sahi k a se i e m d c o rpora tion ms0959 - e - 00 july - 08 - 1 - 27.0mhz vcxo clock g enrer a tor ak 81 4 5 features 2 7 .0 m h z c r y st al i nput one 2 7 .0m hz - re f rence o u t put built - in vcxo - pull r an g e +/ - 10 0 ppm l o w ji t ter per f or m ance - period jit ter: 100 psec ( p - p , t y p.) - long term jitter: 150 psec ( 1000c y c les, p - p, t y p. ) l o w c ur rent c onsu m ption: 4.5 m a ( t y p.) at 3.3v 60 a m ax. at po wer do wn su p p l y volta g e: 3.0 ? 3. 6v operating t e m perature r a nge: - 20 to +85 pac k age: 8 - pin m s o p (l e ad f ree) description t he ak 81 4 5 is a lo w po wer , lo w jitter vcxo ic. ak814 5 accepts 2 7mh z fu ndam ental cr y st al inp ut and produces a low - jitter o utput at t he sam e f requenc y. 0v to +3. 3v s igna l to vin is used to control t he outp ut clock f re quency . t he ak 81 45 is ava ilab le in a 8 - pin m sop pa ck age. a p plications digi t al t v sets person a l vid e o reco r ders set - t op - boxes mul t i m edia rec e iv ers block diag r am ak 81 4 5 27 mhz vcxo clo c k generator r efo ut gnd vdd voltage - c on t rol l ed cr y s t al oscilla t or x 1 x 2 vin pd n .c. http://
a k8145 july - 08 ms0959 - e - 00 - 2 - t he brand name of a kemd ? s ic ? s pin d escription s pac kage: 8 - pin m sop (t op view) pin no. pin name pin t y pe description 1 x 1 x o crystal connection , c onnect t o 2 7 .000 m hz crystal 2 vdd p wr po w er supply. 3 vin p wr vcxo control voltage input 4 pd in po w er do w n control. l: refout on, h: po w er dow n. (1) 5 refout out reference clock output of v cx o based on 27.000 m hz c r ystal high - z at po w er do w n mode. 6 n.c. in n.c. please connect to gnd. 7 gnd p wr ground. 8 x 2 x i crystal connection , c onnect t o 27 .000m hz crystal (1) interna l pull down 100k ( t y p.) ordering information part number marking shipping packag i ng package temperat ure range ak 81 4 5 8145 tape and reel 8 - pin m sop - 20 to 85 8 7 6 5 x 1 vdd vin pd x 2 gnd n.c. ref o ut 1 2 3 4
a k8145 ms0959 - e - 00 july - 08 - 3 - t he brand name of a kemd ? s ic ? s a bsolute maximum rating over op erat ing f ree - a ir tem perature rang e un less ot he rw ise not ed (1) items s y mbol ratings unit s upply v oltage vdd - 0.3 to 4.6 v input voltage vin vss - 0.3 to vdd+0.3 v input c urrent (any pins e x cept supplies) i in 10 ma storage temperature tstg - 55 to 130 c note (1) stress beyond those listed unde r ? absolu t e m ax imum r atings ? may cause perman ent damage to the device. these are stress ratings only. f unctional operation of the device at these or any other conditions beyond those indica t ed under ? r ecommended opera t ing conditions ? is not implied. e x posure to absolu te - ma x imum - r ating conditions for e x tended pe r iods may affect device r eliability. elect r ical par amete r s are gua r anteed only over the recommended opera t ing t emp erature range. t his device is m anu f actured o n a cmos process, t here f ore, g e neric a l l y susc e pti b le t o da m age b y excessive static v o lt a ge. f a ilure to o bserve pr o per h a ndli n g a n d in st a ll a ti o n proce d ures ca n cause da m age . akemd reco mm ends that t h is d e vic e is ha n dl e d wit h approp r ia te preca u ti o ns. recommended oper ation condition s parameter s y mbol conditions m in t yp m ax unit operating t empe r ature ta - 2 0 85 c supply voltage (1) vdd 3.0 3.3 3.6 v output load capacitance cp l pin: refo ut 2 5 pf no te: (1) po w er to vdd require s to be supplied from a single sou r ce. a decoupling capacitor of 0.1 m f for pow er supply line should be install ed close t o each vdd pin. es d sensiti v e d ev ice
a k8145 july - 08 ms0959 - e - 00 - 4 - t he brand name of a kemd ? s ic ? s dc characteristics all specificat ions at vdd : over 3.0 to 3.6 v , ta: - 20 to +85 , 27 mh z cr ystal, unless otherw ise not ed parameter s y mbol conditions min typ m ax unit input leak current 1 i l 1 pin: pd - 10 +75 a input leak current 2 i l 2 pin: vin - 3 +3 a high level o utput voltage v oh pin: refout i oh = - 4 ma 0.8vdd v lo w level o utput voltage v ol pin: refout i o l = +4 ma 0. 2vdd v high level input voltage v i h pin: pd 0. 7 vdd v lo w level input voltage v i l pin: pd 0. 3 vdd v c urrent c onsump t ion 1 i dd 1 no load pd=l ta=25 4.5 ma c urrent c onsump t ion 2 i dd 1 no load pd=h ta=25 0 60 a a c characteristics all specifica t ions at vdd : over 3.0 to 3. 6 v , ta : over - 20 to +85 , 27m h z crystal, unless o t her w ise noted (1) m easured w ith load capaci t ance of 2 5pf ( 2 ) pullable range depends on crystal characteristics , on - chip load capaci t ance, and stray capacity o f pcb. m in. 1 0 0ppm is applied to a k e m d?s authorized t es t condi t ion. ( 3 ) 3 s in 10000 sampling or more ( 4 ) time to settle ou t put into 0.1% of speci f ied frequency parameter s y mbol conditions min typ m ax unit crystal c lock f requency 27 .0 mhz vcxo pullable range ( 2 ) vin at over 0 to vdd v 10 0 ppm vcxo gain vin range at 1.5v1.0v 100 ppm/ v period j i t ter ( 3 ) refout at 27.000m hz 100 p s long term j itter ( 3 ) refout at 27.000m hz 1000 cycle delay 150 p s output c lock d uty cycle pin: refout (1) 4 0 50 5 0 % output c lo ck r ise t ime t r i se pin: refout (1) 2.0 4.0 ns output c lock f all ti me t fall pin: refout (1) 2.0 4.0 ns po w er - up t ime ( 5) pin: refout (1) 1 2 ms
a k8145 ms0959 - e - 00 july - 08 - 5 - t he brand name of a kemd ? s ic ? s package information mechanical data m 0 .1 4 . 0 0 . 3 2 . 8 2 .9 + 0 . 12 - 0 .1 0 . 65 0 . 127 + 0 .1 - 0 . 05 0 . 5 5 0 . 2 0 ~ 10 1 . 1 0 . 1 0 . 1 + 0 . 1 - 0 . 0 5 0.2 0 .1 0 .1 marking a: #1 pin i ndex : part num ber : date co de ( 3 digits) a km and the logo - - a re the brand o f ak emd ? s ic? s and identi fy that akem d continues to o ffer t he b est c hoice for hig h pe rformance mix ed - sig nal s olution under this brand. rohs complian ce all integr ated circuits f orm asahi kasei emd corp or ation (akemd) assem bled in ?lead - f ree? pack ages* are f ull y com plia nt with r oh s. (*) rohs compliant product s fr om akem d are identified w ith ?pb free? lett er indication on product label posted on the anti - shield bag and box es. 1 8 4 5 8145 xxx a
a k8145 july - 08 ms0959 - e - 00 - 6 - t he brand name of a kemd ? s ic ? s important notice l these products and t hei r specifications are subject to change w ithout notice . w hen you consider any use or applicat ion of these products, please make inquiries the sales office of a sah i kasei em d corpo ration (ake md) or author ized distr ibut ors as to curr ent stat us of the products. l ake m d assumes no liability for infr ingement of any patent, intellectual pr operty, or other right s in the application or use of any infor mation cont ained herein. l any ex port of t hese pr oduct s, or devices or systems cont aining t hem, may require an ex port license or other official approval under t he law and regulations of t he country of ex port pert aining to cust oms an d tariff s, currency ex change, or strategic materials. l ake m d produc ts are neither intended nor authorized for use as cr itical components not e1) in any safety, lif e support, or ot her hazard r elat ed device or system note2) , and a ke m d assumes no responsibility for such use, ex cept for t he use approved w ith the ex press w ritten consent by representative dir ect or of akem d. as used here: note1) a criti cal co m ponen t i s o ne w hose failure to function or p erform m ay reasonably be ex pected to re sult, w hether directly or indirectly, in th e loss o f the safety or effectiveness of the devic e or syste m con tai ning it, and w hich m ust therefore m eet very hi gh standard s of perfor m an ce and r eliability. note2) a hazard related device or syste m i s one de signed or in tende d for li fe support or m ain tenance of sa fety or for application s in m edi cine, aer ospa ce, nu clear energy, or other field s, in w hich its failure to fun ction or p erform m ay reasonably be ex pected to re sult i n loss o f l ife or in signi fican t in jury or da m age to person or property. l it is the responsibility of the buyer or distributor of akem d product s, w ho distr ibut es, disposes of, or otherw ise places the product w ith a third party, to not ify such third party in advance of t he above conten t and conditions, and the buyer or distributor agrees t o assume any and all responsibility and liability for and hold akem d harmless from any and all claims arising fr om the use of said pr oduct in the absence of such notif ication.
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