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| [ AK8139A ] rev.j_04 2013/2 - 1 - ak813 9a 2 6m hz clock source multi clock generator ak813 9a ? pll i `?? ??` ic ? 26.000m hz ? ? ??????r????? L ??R 1.7 v - 2 . 0 v (pll ? ) 1.7v - 3.6v ( ) M `?r 7.9 u a ( typ .) ( o??r ) ? r 5.4 ma (typ.) ( o??r ) ?? 26 . 000m hz ? ?? clk1 1 9 .2 00 mhz/ 8.000mhz/ off clk2 12.000mhz/ 24.000mhz/off clk3 3 2. 768k hz ref 2 6 .000 mhz / o ff `?C clk3 ? ? clk1/2, ref 1 5pf clk3 2 5pf ?? period jitter (clk1 / 2, ref) 25 ps typ. (1 ) cycle to cycle jitter (clk1/2, ref) : 3 0ps typ. (1 ) ??` 2 0 ? qfn ( U?` / ???` ) Y? pad ? vss ??A ? tablet pc digital video camcorders digital still camera portable system mobile wi - fi router
[ AK8139A ] rev.j_04 2013/2 - 2 - 1. ?? h ? vdd 27mhz x i x o clk1 ref pll3 pll2 pll1 crystal oscillator divide logic and output control clk2 clk3 s0 s1 s2 gnd s3 26.000mhz preliminary 8 13 9a vdd6 18 xo 19 xi 20 s 2 16 1 v dd 1 2 s0 3 clk3 4 vdd2 5 vss2 8 vss3 7 vdd3 10 vss4 v dd 5 14 vss5 13 ref 12 vdd4 11 s1 15 s 3 17 9 clk 2 6 clk 1 [ AK8139A ] rev.j_04 2013/2 - 3 - ?Ch ? h 1 vdd1 ? 1 1.8v 2 s 0 ?O ? p. 7 4 . ?O ? 3 clk 3 clk3 ? p. 7 4 . ?O ? 4 vdd2 ? 2 (clk 1 /3 ? ) 1 .8v 3.3v 5 vss2 ?? 2 6 clk 1 (1) clk 1 ? p. 7 4 . ?O ? 7 vdd3 ? 3 (clk2 ? ) 1.8v 3.3v 8 v ss3 ? 3 9 clk 2 (1) clk 2 ? p. 7 4 . ?O ? 10 vss4 ?? 4 11 vd d4 ? 4 (ref ? ) 1.8v 3.3v 12 ref (1) ref p. 7 4 . ?O ? 13 vss5 ?? 5 14 vdd 5 ? 5 1.8v 15 s1 clk1 ? p. 7 4 . ?O ? 16 s 2 clk 2 ? p. 7 4 . ?O ? 17 s 3 ref ? p. 7 4 . ?O ? 18 vdd6 ? 6 1.8v 19 x o ???A (26.000mhz) 2 0 x i ???A (26.000mhz) (1) ??? 160k (typ.) ????`Y?????? vss ??A [ AK8139A ] rev.j_04 2013/2 - 4 - 3 ?? ~?? ????????????? ????^? * 1 vdd1 5 6 ??g? ???? gnd g 0.1 f ?? ????? M vdd 1.7 - 2.0 v , vddo= 1.7 - 3. 6 v, ta - 30 8 5 *1 ?o??r s0 = x s1 - 3= l *2 `?r?? * 3 ?o??r s0 = l s1 - 3 = h ? ? g q ??R ?? ?R ? ? ? g q ? ??R ??R ? ? ? g q M `?r M ? r [ AK8139A ] rev.j_04 2013/2 - 5 - vdd=1.7 - 2.0v, vdd o 1.7 - 3.6 v ta - 3 0 85 vdd=1.7 - 2.0v, vddo 1.7 - 3.6v ta - 30 85 ? g q ?k? k? ?r g rg ? ??????????? ???rg ? min typ max g q ?????R s0 - 3 0.7*vdd v ?????R ? 0.3*vdd v ??? ? - 1 0 +1 a ?????R clk1/2 ref 0.8*vddo v i oh = - 4ma ( vdd o =3.6v ) i oh = - 2.18ma(vddo=1.7v) clk3 0.8 *vddo v i oh = - 1.2 ma ( vdd o =3.6v ) i oh = - 0.6ma(vddo=1.7v) ?????R clk1/2 ref 0.2*vddo v i o l =+ 4ma ( vdd o =3.6v ) i o l =+2.18ma(vddo=1.7v) clk3 0.2*vddo v i o l =+1.2 ma ( vdd o =3.6v ) i o l =+0.6ma(vddo=1.7v) [ AK8139A ] rev.j_04 2013/2 - 6 - ? vdd=1.7 - 2.0v, vddo 1.7 - 3.6v ta - 3 0 85 ?????????? r ???? ???? ???? ( 1 ) clk1 ,2, ref 30 p s * 3 , * 6 *1 : ic ???? ( ??A? ? ) +( ? ) K ? ?? ????? ??X? (p. 7 ) ??H??^ ? *2: ?kr?? * 3: O?? * 4 : ? vdd ?R_??? 0.1% ??? rg ? * 5: ??rz?K?rg? * 6: 10000 ??? [ AK8139A ] rev.j_04 2013/2 - 7 - 4 ?O ? ? ? [ AK8139A ] rev.j_04 2013/2 - 8 - 5 ?`x 1. period jitter: the deviation in cycle time of a signal with respect to the ideal period over a random sample of cycles. pairs. j it period = t cycle n - 1 / f0 : where fo is the nominal output frequency and t cycle n is any cycle within the sample measured on controlled edges 2. cycle to cycle jitter: the variation in cycle time of a single between adjacent cycles, over a random sample of adjacent cycle pairs. jit cycle = | t cycle n - t cycle n+1 | : where t cycle n and t cycle n+1 are any two adjacent cycles measured on controlled edges. t cycle n t cycle n +1 1/2vdd o clk 1, 2, 3, ref t cycle n 1/2v dd o clk 1, 2, 3, ref [ AK8139A ] rev.j_04 2013/2 - 9 - 6 ? ??Iu nx2520sa ? ? ?? K 20 % ?? 20 % ?? 20 % ? crystal unit load capacitance cl l1 r1 c1 c0 cl figure 1 : equivalent parameter and load capacitance [ AK8139A ] rev.j_04 2013/2 - 10 - 7 ??`??g? preliminary [ AK8139A ] rev.j_04 2013/2 - 11 - 8 ?`?? ? ?? ? ? ? ? ? ?`???` 8139a ? ?` xxxx 4 ? 8139a xxxx 2 0 1 6 1 0 1 5 6 5 1 1 1 [ AK8139A ] rev.j_04 2013/2 - 12 - ?? ?d?u??u???????u???? ???????H???dQ??? ?I???s?I?_J ?d? x? ???vB??u? h??C O????d? x? ???vB????????? ?d? x? ???vB?? ???????p?????????? ??????I????????? ?du??Q???Y??????? ? H????S??? ?C??C?C???C? ???g???]?b???p????????O ??m??????u?????????? ???? ?????u????????p ???????? ?????? ????o???u?????? p?????????a???? |
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