a sahi k a se i microdevices ms0992 - e - 00 august - 08 - 1 - l o w p o w er multic lock g ener a tor ak81 46a features 2 4.0 m h z exter n al in p ut or c r y s t al in p ut cloc k out freq u encies: - 24 .0 00 mhz - 20 .48 mhz - 4 .0 00 mhz l o w ji t ter per f or m ance - period ji t ter: 25 psec (t y p.) at c l k1 - 2 l o w c urrent c onsu m ption: 5 .0 m a ( t y p.) at 3. 3v su p p l y volta g e: 3.0 C 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 46a is a lo w po wer m ulti clock generator which gen erat es d iff erent f requ e nc y clock s f r o m a 24 mh z cr y sta l oscillator or extern al clock input. it provides up t o three out puts . the pll in the ak 81 4 6a is d erived f r o m akm s high-performance clock devic e tech no logy , ena bling the clock output to perf orm with low jitter a nd t o operat e w ith ver y lo w curre nt consum ption. t he ak 81 4 6a is a va ila ble in an 8 - pin m so p pa c k 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 ivers block diag r am ak 81 4 6a multi clo c k genera t or clk1 clk2 refo gnd divide logic and output con t rol vdd cr y s t al oscilla t or x i x o e x ternal input pll1 http://
a k814 6a august - 08 ms0992 - e - 00 - 2 - t he brand name of a kemds ics pin d escription s pac kage: 8 - pin m sop (to p view) pin no. pin name pin t y pe description 1 x o x o crystal connection , c onnect t o 24 .000 m hz crystal leave this pin floating w hen the e x ternal clock is used. 2 gnd p wr ground 3 vdd p wr 3.3v 4 clk 1 out 20.48 m hz 5 clk2 out 4.0 m hz 6 re fo out 24.0 00 m hz 7 vdd p wr 3.3v 8 x i x i crystal i nput o r refe r ence clock i nput 24 .0 00 m hz ordering information part number marking shipping packag i ng package temperat ure range ak 81 46a 1 46a tape and reel 8 -pin m sop -20 to 85 8 7 6 5 x o gnd vdd clk1 x i vdd refo clk2 1 2 3 4
a k814 6a ms0992 - e - 00 august - 08 - 3 - t he brand name of a kemds ics 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 supply 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 beyo nd 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 emperat ure 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 vice 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 cp1 pin: clk1 ,2 ,refo 15 pf n ote: (1) po w er to vdd requires 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. esd sensiti v e d ev ice
a k814 6a august - 08 ms0992 - e - 00 - 4 - t he brand name of a kemds ics dc characteristics all specificat ions at vdd : over 3.0 to 3.6 v , ta: - 20 to +85 , 2 4 mh z cr ystal, unless otherw ise not ed parameter s y mbol conditions min typ m ax unit high level o utput voltage v oh pin: clk1 - 2,refo i oh = -4 ma 0.8vdd v lo w level o utput voltage v ol pin: clk1 - 2,refo i o l = +4 ma 0. 2vdd v c urrent c onsump t ion i dd no load ta=25 5.0 ma a c characteristics all specifica t ions at vdd : over 3.0 to 3. 6 v , ta : over -20 to +85 , 2 4 m h z crystal, unless ot herw ise noted (1) at cut, fundamental mode recommend ed crystal u nit : hc -49/u03c (river eletec corp.) (2) m easured w ith load capacit ance of 15pf (3) 1 s in 100 0 0 sampling or more (4) the time that output reaches t he tar get fr equency w ithin accuracy of 0. 1% fr om the point that the pow er supply reaches vdd parameter s y mbol conditions min typ max unit crystal c lock f requency (1) 24.0 mhz e x ternal clock input pin: x i 5 00mvp - p or more duty:30% -70% @0.5* (input sw ing ) 2 4.0 mhz period j i t ter ( 3 ) clk1 -2 25 p s pin: clk1- 2 45 50 55 % output clock duty cycle pin: refo 40 50 60 % output c lock r ise t ime t ri se pin: clk1 - 2 ,refo ( 2 ) 1.5 4.0 ns output c lock f all time t fall pin: clk1 - 2 ,refo ( 2 ) 1.5 4.0 ns po w er -up t ime (4) pin: clk1 - 2 ( 2 ) 1 ms
a k814 6a ms0992 - e - 00 august - 08 - 5 - t he brand name of a kemd s ic s package information mechanical data m 0 .1 4.00.3 2.8 2 .9 + 0 . 12 - 0 .1 0 . 65 0 . 127 + 0 .1 - 0 . 05 0.550.2 0~ 10 1.10.1 0.1 +0.1 -0.05 0.2 0 .1 0 .1 marking a: #1 pin i ndex : par t num ber : date co de ( 3 digits) a km and the logo - - a re the brand o f akm s ic s and identi fy that akm 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 microdevices (akm) 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 akm 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 1 46a xxx a
a k814 6a august - 08 ms0992 - e - 00 - 6 - t he brand name of a kemds ics 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 microdevices corporatio n (akm) or autho r ized distr ibut ors as to curr ent stat us of the products. l akm 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 these 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 akm products ar e 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 km assumes no responsibility for such use, ex cept for t he use approved w ith the ex press w ritten conse nt by representative dir ect or of akm. 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 devi ce 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, aerospac e, 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 akm pro duct 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 a nd hold akm harmless from any and all claims arising fr om the use of said pr oduct in the absence of such notif ication.
|
