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843001agi-23 www.icst.com/products/hiperclocks.html rev. b january 6, 2006 1 integrated circuit systems, inc. ICS843001I-23 f emto c locks ? c rystal - to -3.3v lvpecl/lvcmos f requency s ynthesizer preliminary g eneral d escription the ICS843001I-23 is a highly versatile, low phase noise lvpecl/lvcmos synthesizer which can generate low jitter reference clocks for a variety of communication applications and is a member of the hiperclocks tm family of high performance clock solutions from ics. the dual crystal interface allows the synthesizer to support up to three communication standards in a given application (i.e. sonet with a 19.44mhz crystal, 1gb/10gb ethernet and fibre channel using a 25mhz crystal). the rms phase jitter performance is typically less than 1ps, thus making the device acceptable for use in demanding applications such as oc48 sonet, gbe/10gb ethernet and san applications. the ICS843001I-23 is packaged in a small 24-pin tssop package. f eatures ? one 3.3v lvpecl output pair and one lvcmos/lvttl ref_out output ? selectable crystal oscillator interfaces or lvcmos/lvttl single-ended input ? crystal and clk range: 17.5mhz - 29.54mhz ? able to generate gbe/10gbe/12gbe, fibre channel (1gb/4gb/10gb), pci-e and sata from a 25mhz crystal ? vco range: 1.12ghz - 1.3ghz ? supports the following applications: sonet, ethernet, fibre channel, serial ata, and hdtv ? rms phase jitter @ 622.08mhz (12khz - 20mhz): <1ps (typical) design target ? supply modes: v cc /v cco 3.3v/3.3v 3.3v/2.5v 2.5v/2.5v ? -40c to 85c ambient operating temperature ? available in both standard and lead-free rohs-compliant packages hiperclocks? ic s p in a ssignment 11 10 01 00 00 01 10 11 phase detector vco 000 44 001 45 010 48 011 50 100 51 111 64 (default) n 000 2 001 4 010 5 011 6 100 8 (default) 101 10 110 12 111 16 m 3 3 osc osc ICS843001I-23 24-lead tssop 4.40mm x 7.8mm x 0.92mm package body g package top view v cco _ lvcmos n0 n1 n2 v cco _ lvpecl q nq v ee v cca v cc xtal_out1 xtal_in1 1 2 3 4 5 6 7 8 9 10 11 12 ref_out v ee oe_ref m2 m1 m0 mr sel1 sel0 clk xtal_in0 xtal_out0 24 23 22 21 20 19 18 17 16 15 14 13 b lock d iagram n2:n0 sel0 sel1 xtal_in0 xtal_out0 xtal_in1 xtal_out1 clk mr m2:m0 oe_ref q nq pulldown pulldown pulldown pulldown ref_out pulldown pullup the preliminary information presented herein represents a product in prototyping or pre-production. the noted characteristics a re based on initial product characterization. integrated circuit systems, incorporated (ics) reserves the right to change any circuitry or specifications without notice.
843001agi-23 www.icst.com/products/hiperclocks.html rev. b january 6, 2006 2 integrated circuit systems, inc. ICS843001I-23 f emto c locks ? c rystal - to -3.3v lvpecl/lvcmos f requency s ynthesizer preliminary t able 1. p in d escriptions t able 2. p in c haracteristics r e b m u ne m a ne p y tn o i t p i r c s e d 1v s o m c _ o c c r e w o p . t u p t u o t u o _ f e r l t t v l / s o m c v l r o f n i p y l p p u s t u p t u o 3 , 21 n , 0 nt u p n in w o d l l u p . c 3 e l b a t e e s . s n i p t c e l e s r e d i v i d t u p t u o . s l e v e l e c a f r e t n i l t t v l / s o m c v l 42 nt u p n ip u l l u p 5v l c e p v l _ o c c r e w o p. t u p t u o l c e p v l r o f n i p y l p p u s t u p t u o 7 , 6q n , qt u p u o. s l e v e l e c a f r e t n i l c e p v l . r i a p t u p t u o l a i t n e r e f f i d 3 2 , 8v e e r e w o p. n i p y l p p u s e v i t a g e n 9v a c c r e w o p. n i p y l p p u s g o l a n a 0 1v c c r e w o p. n i p y l p p u s e r o c 1 1 2 1 , 1 t u o _ l a t x 1 n i _ l a t x t u p n i , t u p t u o e h t s i 1 t u o _ l a t x . e c a f r e t n i l a t s y r c t n a n o s e r l e l l a r a p . t u p n i e h t s i 1 n i _ l a t x 3 1 4 1 , 0 t u o _ l a t x 0 n i _ l a t x t u p n i , t u p t u o e h t s i 0 t u o _ l a t x . e c a f r e t n i l a t s y r c t n a n o s e r l e l l a r a p . t u p n i e h t s i 0 n i _ l a t x 5 1k l ct u p n in w o d l l u p. t u p n i k c o l c l t t v l / s o m c v l 7 1 , 6 11 l e s , 0 l e st u p n in w o d l l u p. s l e v e l e c a f r e t n i l t t v l / s o m c v l . s n i p t c e l e s x u m t u p n i 8 1r mt u p n in w o d l l u p e r a s r e d i v i d l a n r e t n i e h t , h g i h c i g o l n e h w . t e s e r r e t s a m h g i h e v i t c a o t q n t u p t u o d e t r e v n i e h t d n a w o l o g o t q t u p t u o e u r t e h t g n i s u a c t e s e r e r a s t u p t u o e h t d n a s r e d i v i d l a n r e t n i e h t , w o l c i g o l n e h w . h g i h o g . s l e v e l e c a f r e t n i l t t v l / s o m c v l . d e l b a n e 1 2 , 0 2 , 9 12 m , 1 m , 0 mt u p n ip u l l u p . b 3 e l b a t e e s . s n i p t c e l e s r e d i v i d k c a b d e e f . s l e v e l e c a f r e t n i l t t v l / s o m c v l 2 2f e r _ e ot u p n in w o d l l u p . e 3 e l b a t e e s . w o l t l u a f e d . e l b a n e t u p t u o k c o l c e c n e r e f e r . s l e v e l e c a f r e t n i l t t v l / s o m c v l 4 2t u o _ f e rt u p t u o . s l e v e l e c a f r e t n i l t t v l / s o m c v l . t u p t u o k c o l c e c n e r e f e r : e t o n n w o d l l u p d n a p u l l u p . s e u l a v l a c i p y t r o f , s c i t s i r e t c a r a h c n i p , 2 e l b a t e e s . s r o t s i s e r t u p n i l a n r e t n i o t r e f e r l o b m y sr e t e m a r a ps n o i t i d n o c t s e tm u m i n i ml a c i p y tm u m i x a ms t i n u c n i e c n a t i c a p a c t u p n i 4f p r n w o d l l u p r o t s i s e r n w o d l l u p t u p n i 1 5k r p u l l u p r o t s i s e r p u l l u p t u p n i 1 5k r t u o e c n a d e p m i t u p t u ot u o _ f e r572 1
843001agi-23 www.icst.com/products/hiperclocks.html rev. b january 6, 2006 3 integrated circuit systems, inc. ICS843001I-23 f emto c locks ? c rystal - to -3.3v lvpecl/lvcmos f requency s ynthesizer preliminary t able 3a. c ommon c onfigurations t able t u p n i k c a b d e e f r e d i v i d ) z h m ( o c ve u l a v r e d i v i d n y c n e u q e r f t u p t u o ) z h m ( n o i t a c i l p p a ) z h m ( t u p n i l a t x 7 24 48 8 1 16 15 2 . 4 7v t d h 5 7 . 4 28 48 8 1 16 15 2 . 4 7v t d h 4 4 . 9 14 66 1 . 4 4 2 18 2 5 . 5 5 1t e n o s 4 4 . 9 14 66 1 . 4 4 2 12 8 0 . 2 2 6t e n o s 4 4 . 9 14 66 1 . 4 4 2 14 4 0 . 1 1 3t e n o s 5 20 50 5 2 10 15 2 1e g i g 5 20 50 5 2 18 5 2 . 6 5 1e g i g 0 1 5 20 50 5 2 15 0 5 2e g i g 5 20 50 5 2 14 5 . 2 1 3i i m g x 5 20 50 5 2 12 5 2 6e g i g 0 1 5 25 45 2 1 16 5 . 7 8 1e g i g 2 1 5 28 40 0 2 12 10 0 1s s e r p x e i c p 5 28 40 0 2 18 0 5 1a t a s 5 28 40 0 2 16 15 7a t a s 5 21 55 7 2 12 15 2 . 6 0 1l e n n a h c e r b i f 5 21 55 7 2 18 5 7 3 . 9 5 1l e n n a h c e r b i f g i g 0 1 5 21 55 7 2 16 5 . 2 1 2l e n n a h c e r b i f g i g 4 t able 3b. p rogrammable m o utput d ivider f unction t able t able 3c. p rogrammable n o utput d ivider f unction t able s t u p n i t u p n i e c n e r e f e re d o m l l p 1 l e s0 l e s 00 0 l a t xe v i t c a 01 1 l a t xe v i t c a 10 k l ce v i t c a 11 k l cs s a p y b t able 3d. b ypass m ode f unction t able s t u p n i e u l a v e d i v i d n 2 n1 n0 n 000 2 00 1 4 010 5 011 6 10 0 8 ) t l u a f e d ( 10 1 0 1 110 2 1 111 6 1 t able 3e. oe_ref o utput f unction t able s t u p n i r e d i v i d m e u l a v y c n e u q e r f t u p n i 2 m1 m0 mm u m i n i mm u m i x a m 000 4 45 . 5 24 5 . 9 2 00 1 5 49 . 4 28 8 . 8 2 010 8 43 . 3 28 0 . 7 2 011 0 54 . 2 20 . 6 2 10 0 1 50 . 2 29 4 . 5 2 1114 6 ) t l u a f e d ( 5 . 7 11 3 . 0 2 s t u p n it u p t u o f e r _ e ot u o _ f e r 0z - i h 1e v i t c a
843001agi-23 www.icst.com/products/hiperclocks.html rev. b january 6, 2006 4 integrated circuit systems, inc. ICS843001I-23 f emto c locks ? c rystal - to -3.3v lvpecl/lvcmos f requency s ynthesizer preliminary t able 4a. p ower s upply dc c haracteristics , v cc = v cca = v cco_lvpecl, v cco_lvcmos = 3.3v5%, ta = -40c to 85c a bsolute m aximum r atings supply voltage, v cc 4.6v inputs, v i -0.5v to v cc + 0.5v outputs, i o (lvpecl) continuous current 50ma surge current 100ma outputs, v o (lvcmos) -0.5v to v cco + 0.5v package thermal impedance, ja 70c/w (0 mps) storage temperature, t stg -65c to 150c note: stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these ratings are stress specifications only. functional operation of product at these conditions or any conditions be- yond those listed in the dc characteristics or ac character- istics is not implied. exposure to absolute maximum rating conditions for extended periods may affect product reliability. t able 4b. p ower s upply dc c haracteristics , v cc = v cca = 3.3v5%, v cco_lvpecl, v cco_lvcmos = 2.5v5%, ta = -40c to 85c l o b m y sr e t e m a r a ps n o i t i d n o c t s e tm u m i n i ml a c i p y tm u m i x a ms t i n u v c c e g a t l o v y l p p u s e r o c5 3 1 . 33 . 35 6 4 . 3v v a c c e g a t l o v y l p p u s g o l a n a5 3 1 . 33 . 35 6 4 . 3v v l c e p v l _ o c c e g a t l o v y l p p u s t u p t u o5 3 1 . 33 . 35 6 4 . 3v v s o m c v l _ o c c e g a t l o v y l p p u s t u p t u o5 3 1 . 33 . 35 6 4 . 3v i e e t n e r r u c y l p p u s r e w o p 0 = f e r _ e od b ta m z h m 4 5 . 9 2 = t u o _ f e r , 1 = f e r _ e od b ta m i a c c t n e r r u c y l p p u s g o l a n a 5a m i l c e p v l _ o c c t n e r r u c y l p p u s t u p t u o0 = f e r _ e od b ta m i s o m c v l _ o c c t n e r r u c y l p p u s t u p t u oz h m 4 5 . 9 2 = t u o _ f e r , 1 = f e r _ e od b ta m l o b m y sr e t e m a r a ps n o i t i d n o c t s e tm u m i n i ml a c i p y tm u m i x a ms t i n u v c c e g a t l o v y l p p u s e r o c5 3 1 . 33 . 35 6 4 . 3v v a c c e g a t l o v y l p p u s g o l a n a5 3 1 . 33 . 35 6 4 . 3v v l c e p v l _ o c c e g a t l o v y l p p u s t u p t u o5 2 6 . 25 . 25 2 6 . 2v v s o m c v l _ o c c e g a t l o v y l p p u s t u p t u o5 2 6 . 25 . 25 2 6 . 2v i e e t n e r r u c y l p p u s r e w o p 0 = f e r _ e od b ta m z h m 4 5 . 9 2 = t u o _ f e r , 1 = f e r _ e od b ta m i a c c t n e r r u c y l p p u s g o l a n a d b ta m i l c e p v l _ o c c t n e r r u c y l p p u s t u p t u o0 = f e r _ e od b ta m i s o m c v l _ o c c t n e r r u c y l p p u s t u p t u oz h m 4 5 . 9 2 = t u o _ f e r , 1 = f e r _ e od b ta m
843001agi-23 www.icst.com/products/hiperclocks.html rev. b january 6, 2006 5 integrated circuit systems, inc. ICS843001I-23 f emto c locks ? c rystal - to -3.3v lvpecl/lvcmos f requency s ynthesizer preliminary t able 4e. lvpecl dc c haracteristics , v cc = v cca = v cco_lvpecl = 3.3v5% or 2.5v5%, or v cc = v cca = 3.3v5%, v cco_lvpecl = 2.5v5%, ta = -40c to 85c t able 4d. lvcmos / lvttl dc c haracteristics , v cc = v cca = v cco_lvcmos = 3.3v5% or 2.5v5%, or v cc = v cca = 3.3v5%, v cco_lvcmos = 2.5v5%, ta = -40c to 85c t able 4c. p ower s upply dc c haracteristics , v cc = v cca = v cco_lvpecl, v cco_lvcmos = 2.5v5%, ta = -40c to 85c l o b m y sr e t e m a r a ps n o i t i d n o c t s e tm u m i n i ml a c i p y tm u m i x a ms t i n u v c c e g a t l o v y l p p u s e r o c5 2 6 . 25 . 25 2 6 . 2v v a c c e g a t l o v y l p p u s g o l a n a5 2 6 . 25 . 25 2 6 . 2v v l c e p v l _ o c c e g a t l o v y l p p u s t u p t u o5 2 6 . 25 . 25 2 6 . 2v v s o m c v l _ o c c e g a t l o v y l p p u s t u p t u o5 2 6 . 25 . 25 2 6 . 2v i e e t n e r r u c y l p p u s r e w o p 0 = f e r _ e od b ta m z h m 4 5 . 9 2 = t u o _ f e r , 1 = f e r _ e od b ta m i a c c t n e r r u c y l p p u s g o l a n a 5a m i l c e p v l _ o c c t n e r r u c y l p p u s t u p t u o0 = f e r _ e od b ta m i s o m c v l _ o c c t n e r r u c y l p p u s t u p t u oz h m 4 5 . 9 2 = t u o _ f e r , 1 = f e r _ e od b ta m l o b m y sr e t e m a r a ps n o i t i d n o c t s e tm u m i n i ml a c i p y tm u m i x a ms t i n u v h i e g a t l o v h g i h t u p n i v c c v 3 . 3 =2v c c 3 . 0 +v v c c v 5 . 2 =7 . 1v c c 3 . 0 +v v l i e g a t l o v w o l t u p n i v c c v 3 . 3 =3 . 0 -8 . 0v v c c v 5 . 2 =3 . 0 -7 . 0v i h i t u p n i t n e r r u c h g i h , 1 l e s , 0 l e s , k l c 1 n , 0 n , r m , f e r _ e o v c c v = n i v 5 6 4 . 3 = v 5 2 6 . 2 r o 0 5 1a 2 m : 0 m , 2 n v c c v = n i v 5 6 4 . 3 = v 5 2 6 . 2 r o 5a i l i t u p n i t n e r r u c w o l , 1 l e s , 0 l e s , k l c 1 n , 0 n , r m , f e r _ e o v c c , v 5 2 6 . 2 r o v 5 6 4 . 3 = v n i v 0 = 5 -a 2 m : 0 m , 2 n v c c , v 5 2 6 . 2 r o v 5 6 4 . 3 = v n i v 0 = 0 5 1 -a v h o h g i h t u p t u o 1 e t o n ; e g a t l o v t u o _ f e r v s o m c v l _ o c c v 5 6 4 . 3 =6 . 2v v s o m c v l _ o c c v 5 2 6 . 2 =8 . 1v v l o w o l t u p t u o 1 e t o n ; e g a t l o v t u o _ f e r v s o m c v l _ o c c v 5 6 4 . 3 = v 5 2 6 . 2 r o 5 . 0v / v t e t a r e g d e t u p n ik l c% 0 8 - % 0 2d b ts n / v 0 5 h t i w d e t a n i m r e t t u p t u o : 1 e t o n v o t s o m c v l _ o c c , n o i t c e s n o i t a m r o f n i t n e m e r u s a e m r e t e m a r a p e e s . 2 / . s m a r g a i d " m a r g a i d t i u c r i c t s e t d a o l t u p t u o " l o b m y sr e t e m a r a ps n o i t i d n o c t s e tm u m i n i ml a c i p y tm u m i x a ms t i n u v h o 1 e t o n ; e g a t l o v h g i h t u p t u ov l c e p v l _ o c c 4 . 1 -v l c e p v l _ o c c 9 . 0 -v v l o 1 e t o n ; e g a t l o v w o l t u p t u ov l c e p v l _ o c c 0 . 2 -v l c e p v l _ o c c 7 . 1 -v v g n i w s g n i w s e g a t l o v t u p t u o k a e p - o t - k a e p6 . 00 . 1v 0 5 h t i w d e t a n i m r e t s t u p t u o : 1 e t o n v o t l c e p v l _ o c c . v 2 -
843001agi-23 www.icst.com/products/hiperclocks.html rev. b january 6, 2006 6 integrated circuit systems, inc. ICS843001I-23 f emto c locks ? c rystal - to -3.3v lvpecl/lvcmos f requency s ynthesizer preliminary t able 6a. ac c haracteristics , v cc = v cca = v cco_lvpecl, v cco_lvcmos = 3.3v5%, ta = -40c to 85c t able 5. c rystal c haracteristics r e t e m a r a ps n o i t i d n o c t s e tm u m i n i ml a c i p y tm u m i x a ms t i n u n o i t a l l i c s o f o e d o m l a t n e m a d n u fz h m y c n e u q e r f 5 . 7 14 5 . 9 2z h m ) r s e ( e c n a t s i s e r s e i r e s t n e l a v i u q e 0 5 e c n a t i c a p a c t n u h s 7f p l e v e l e v i r d 1w m . l a t s y r c t n a n o s e r l e l l a r a p f p 8 1 n a g n i s u d e z i r e t c a r a h c : e t o n t able 6b. ac c haracteristics , v cc = v cca = 3.3v5%, v cco_lvpecl, v cco_lvcmos = 2.5v5%, ta = -40c to 85c l o b m y sr e t e m a r a ps n o i t i d n o c t s e tm u m i n i ml a c i p y tm u m i x a ms t i n u f t u o y c n e u q e r f t u p t u o 6 50 5 6z h m t d p n o i t a g a p o r p 1 e t o n , y a l e d o t k l c t u o _ f e r d b ts n t ) ? ( t i j ; ) m o d n a r ( , r e t t i j e s a h p s m r 3 , 2 e t o n ) z h m 0 2 - z h k 2 1 ( z h m 8 0 . 2 2 6d b ts p f o c v e g n a r k c o l o c v l l p 2 1 . 13 . 1z h g l t l e s _ e m i t t c e l e s d b ts m l t m _ e m i t k c o l l l p d b ts m t r t / f t u p t u o e m i t l l a f / e s i r q n / q% 0 8 o t % 0 20 0 5s p t u o _ f e r% 0 8 o t % 0 20 0 5s p c d oe l c y c y t u d t u p t u o q n / q0 5% t u o _ f e r0 5% v e h t m o r f d e r u s a e m : 1 e t o n c c v o t t u p n i e h t f o 2 / s o m c v l _ o c c . t u p t u o e h t f o 2 / . l a t s y r c z t r a u q z h m 4 4 . 9 1 a g n i s u d e r u s a e m r e t t i j e s a h p : 2 e t o n . 5 6 d r a d n a t s c e d e j h t i w e c n a d r o c c a n i d e n i f e d s i r e t e m a r a p s i h t : 3 e t o n l o b m y sr e t e m a r a ps n o i t i d n o c t s e tm u m i n i ml a c i p y tm u m i x a ms t i n u f t u o y c n e u q e r f t u p t u o 6 50 5 6z h m t d p n o i t a g a p o r p 1 e t o n , y a l e d o t k l c t u o _ f e r d b ts n t ) ? ( t i j ; ) m o d n a r ( , r e t t i j e s a h p s m r 3 , 2 e t o n ) z h m 0 2 - z h k 2 1 ( z h m 8 0 . 2 2 6d b ts p f o c v e g n a r k c o l o c v l l p 2 1 . 13 . 1z h g l t l e s _ e m i t t c e l e s d b ts m l t m _ e m i t k c o l l l p d b ts m t r t / f t u p t u o e m i t l l a f / e s i r q n / q% 0 8 o t % 0 20 0 5s p t u o _ f e r% 0 8 o t % 0 20 0 5s p c d oe l c y c y t u d t u p t u o q n / q0 5% t u o _ f e r0 5% v e h t m o r f d e r u s a e m : 1 e t o n c c v o t t u p n i e h t f o 2 / s o m c v l _ o c c . t u p t u o e h t f o 2 / . l a t s y r c z t r a u q z h m 4 4 . 9 1 a g n i s u d e r u s a e m r e t t i j e s a h p : 2 e t o n . 5 6 d r a d n a t s c e d e j h t i w e c n a d r o c c a n i d e n i f e d s i r e t e m a r a p s i h t : 3 e t o n
843001agi-23 www.icst.com/products/hiperclocks.html rev. b january 6, 2006 7 integrated circuit systems, inc. ICS843001I-23 f emto c locks ? c rystal - to -3.3v lvpecl/lvcmos f requency s ynthesizer preliminary t able 6c. ac c haracteristics , v cc = v cca = v cco_lvpecl, v cco_lvcmos = 2.5v5%, ta = -40c to 85c l o b m y sr e t e m a r a ps n o i t i d n o c t s e tm u m i n i ml a c i p y tm u m i x a ms t i n u f t u o y c n e u q e r f t u p t u o 6 50 5 6z h m t d p n o i t a g a p o r p 1 e t o n , y a l e d o t k l c t u o _ f e r d b ts n t ) ? ( t i j ; ) m o d n a r ( , r e t t i j e s a h p s m r 3 , 2 e t o n ) z h m 0 2 - z h k 2 1 ( z h m 8 0 . 2 2 6d b ts p f o c v e g n a r k c o l o c v l l p 2 1 . 13 . 1z h g l t l e s _ e m i t t c e l e s d b ts m l t m _ e m i t k c o l l l p d b ts m t r t / f t u p t u o e m i t l l a f / e s i r q n / q% 0 8 o t % 0 20 0 5s p t u o _ f e r% 0 8 o t % 0 20 0 5s p c d oe l c y c y t u d t u p t u o q n / q0 5% t u o _ f e r0 5% v e h t m o r f d e r u s a e m : 1 e t o n c c v o t t u p n i e h t f o 2 / s o m c v l _ o c c . t u p t u o e h t f o 2 / . l a t s y r c z t r a u q z h m 4 4 . 9 1 a g n i s u d e r u s a e m r e t t i j e s a h p : 2 e t o n . 5 6 d r a d n a t s c e d e j h t i w e c n a d r o c c a n i d e n i f e d s i r e t e m a r a p s i h t : 3 e t o n
843001agi-23 www.icst.com/products/hiperclocks.html rev. b january 6, 2006 8 integrated circuit systems, inc. ICS843001I-23 f emto c locks ? c rystal - to -3.3v lvpecl/lvcmos f requency s ynthesizer preliminary p arameter m easurement i nformation 3.3v c ore /2.5v lvpecl o utput l oad ac t est c ircuit 2.5v lvpecl o utput l oad ac t est c ircuit 3.3v lvpecl o utput l oad ac t est c ircuit scope qx nqx lvpecl 2v -1.3v0.165v 2.5v lvcmos o utput l oad ac t est c ircuit v cc , v cca , v cco_lvpecl v ee 3.3v c ore /2.5v lvcmos o utput l oad ac t est c ircuit 3.3v lvcmos o utput l oad ac t est c ircuit scope qx lvcmos 1.655% -1.65v5% v cc , v cca , v cco_lvcmos v ee scope qx nqx lvpecl 2.8v0.04v -0.5v0.125v v cc , v cca v ee scope qx lvcmos v ddo 2 1.255% -1.25v5% v cc , v cca v ee scope qx nqx lvpecl 2v -0.5v0.125v v cc , v cca , v cco_lvpecl v ee scope qx lvcmos 1.255% -1.25v5% v cc , v cca , v cco_lvcmos v ee v cco_lvpecl v cco_lvcmos 2v 2.055%
843001agi-23 www.icst.com/products/hiperclocks.html rev. b january 6, 2006 9 integrated circuit systems, inc. ICS843001I-23 f emto c locks ? c rystal - to -3.3v lvpecl/lvcmos f requency s ynthesizer preliminary t pd v cc 2 v cco_lvcmos 2 ref_out t pw t period t pw t period odc = x 100% q clk rms p hase j itter p ropagation d elay clock outputs 20% 80% 80% 20% t r t f v sw i n g nq o utput r ise /f all t ime phase noise mas k offset frequency f 1 f 2 phase noise plot rms jitter = area under the masked phase noise plot noise power lvpecl o utput d uty c ycle /p ulse w idth /p eriod t period t pw t period odc = x 100% v cco_lvcmos 2 t pw ref_out lvcmos o utput d uty c ycle /p ulse w idth /p eriod
843001agi-23 www.icst.com/products/hiperclocks.html rev. b january 6, 2006 10 integrated circuit systems, inc. ICS843001I-23 f emto c locks ? c rystal - to -3.3v lvpecl/lvcmos f requency s ynthesizer preliminary a pplication i nformation as in any high speed analog circuitry, the power supply pins are vulnerable to random noise. the ICS843001I-23 provides separate power supplies to isolate any high switching noise from the outputs to the internal pll. v cc , v cca , and v cco_x should be individually connected to the power supply plane through vias, and bypass capacitors should be used for each pin. to achieve optimum jitter performance, power supply isolation is required. figure 1 illustrates how a 10 resistor along with a 10f and a .01 f bypass capacitor should be connected to each v cca . p ower s upply f iltering t echniques f igure 1. p ower s upply f iltering 10 v cca 10 f .01 f 3.3v or 2.5v .01 f v cc i nputs : c rystal i nput : for applications not requiring the use of the crystal oscillator input, both xtal_in and xtal_out can be left floating. though not required, but for additional protection, a 1k resistor can be tied from xtal_in to ground. clk i nput : for applications not requiring the use of the test clock, it can be left floating. though not required, but for additional protection, a 1k resistor can be tied from the clk input to ground. c ontrol p ins : all control pins have internal pull-ups or pull-downs; additional resistance is not required but can be added for additional protection. a 1k resistor can be used. r ecommendations for u nused i nput and o utput p ins o utputs : lvcmos o utput : all unused lvcmos output can be left floating. we recommend that there is no trace attached. lvpecl o utput all unused lvpecl outputs can be left floating. we recommend that there is no trace attached. both sides of the differential output pair should either be left floating or terminated.
843001agi-23 www.icst.com/products/hiperclocks.html rev. b january 6, 2006 11 integrated circuit systems, inc. ICS843001I-23 f emto c locks ? c rystal - to -3.3v lvpecl/lvcmos f requency s ynthesizer preliminary t ermination for 3.3v lvpecl o utput v cc - 2v 50 50 rtt z o = 50 z o = 50 fout fin rtt = z o 1 ((v oh + v ol ) / (v cc ? 2)) ? 2 3.3v 125 125 84 84 z o = 50 z o = 50 fout fin the clock layout topology shown below is a typical ter- mination for lvpecl outputs. the two different layouts mentioned are recommended only as guidelines. fout and nfout are low impedance follower outputs that generate ecl/lvpecl compatible outputs. there- fore, terminating resistors (dc current path to ground) or current sources must be used for functionality. these f igure 3b. lvpecl o utput t ermination f igure 3a. lvpecl o utput t ermination outputs are designed to drive 50 transmission lines. matched impedance techniques should be used to maxi- mize operating frequency and minimize signal distor- tion. figures 3a and 3b show two different layouts which are recommended only as guidelines. other suitable clock layouts may exist and it would be recommended that the board designers simulate to guarantee compat- ibility across all printed circuit and clock component pro- cess variations. c rystal i nput i nterface the ICS843001I-23 has been characterized with 18pf parallel resonant crystals. the capacitor values shown in figure 2. c rystal i npu t i nterface figure 2 below were determined using an 18pf parallel resonant crystal and were chosen to minimize the ppm error. ics84332 xtal _i n xtal _ou t x1 18pf parallel cry stal c2 22p c1 22p ICS843001I-23
843001agi-23 www.icst.com/products/hiperclocks.html rev. b january 6, 2006 12 integrated circuit systems, inc. ICS843001I-23 f emto c locks ? c rystal - to -3.3v lvpecl/lvcmos f requency s ynthesizer preliminary t ermination for 2.5v lvpecl o utput figure 4a and figure 4b show examples of termination for 2.5v lvpecl driver. these terminations are equivalent to ter- minating 50 to v cc - 2v. for v cc = 2.5v, the v cc - 2v is very close to ground level. the r3 in figure 4b can be eliminated and the termination is shown in figure 4c. f igure 4c. 2.5v lvpecl t ermination e xample f igure 4b. 2.5v lvpecl d river t ermination e xample f igure 4a. 2.5v lvpecl d river t ermination e xample r2 62.5 zo = 50 ohm r1 250 + - 2.5v 2,5v lvpecl driv er r4 62.5 r3 250 zo = 50 ohm 2.5v vcc=2.5v r1 50 r3 18 zo = 50 ohm zo = 50 ohm + - 2,5v lvpecl driver vcc=2.5v 2.5v r2 50 2,5v lvpecl driv er vcc=2.5v r1 50 r2 50 2.5v zo = 50 ohm zo = 50 ohm + -
843001agi-23 www.icst.com/products/hiperclocks.html rev. b january 6, 2006 13 integrated circuit systems, inc. ICS843001I-23 f emto c locks ? c rystal - to -3.3v lvpecl/lvcmos f requency s ynthesizer preliminary r eliability i nformation t ransistor c ount the transistor count for ICS843001I-23 is: 4165 t able 7. ja vs . a ir f low t able for 24 l ead tssop ja by velocity (meters per second) 0 1 2.5 multi-layer pcb, jedec standard test boards 70c/w 65c/w 62c/w
843001agi-23 www.icst.com/products/hiperclocks.html rev. b january 6, 2006 14 integrated circuit systems, inc. ICS843001I-23 f emto c locks ? c rystal - to -3.3v lvpecl/lvcmos f requency s ynthesizer preliminary p ackage o utline - g s uffix for 24 l ead tssop t able 8. p ackage d imensions reference document: jedec publication 95, mo-153 l o b m y s s r e t e m i l l i m m u m i n i mm u m i x a m n4 2 a- -0 2 . 1 1 a5 0 . 05 1 . 0 2 a0 8 . 05 0 . 1 b9 1 . 00 3 . 0 c9 0 . 00 2 . 0 d0 7 . 70 9 . 7 ec i s a b 0 4 . 6 1 e0 3 . 40 5 . 4 ec i s a b 5 6 . 0 l5 4 . 05 7 . 0 0 8 a a a- -0 1 . 0
843001agi-23 www.icst.com/products/hiperclocks.html rev. b january 6, 2006 15 integrated circuit systems, inc. ICS843001I-23 f emto c locks ? c rystal - to -3.3v lvpecl/lvcmos f requency s ynthesizer preliminary t able 9. o rdering i nformation while the information presented herein has been checked for both accuracy and reliability, integrated circuit systems, incorpor ated (ics) assumes no responsibility for either its use or for infringement of any patents or other rights of third parties, which would result from its use. no other circuits, patent s, or licenses are implied. this product is intended for use in normal commercial and industrial applications. any other applications such as those requiring high reliability or other extr aordinary environmental requirements are not recommended without additional processing by ics. ics reserves the right to change any circuitry or specifications without noti ce. ics does not authorize or warrant any ics product for use in life support devices or critical medical instruments. the aforementioned trademarks, hiperclocks and femtoclocks are trademarks of integrated circuit systems, inc. or its subsidiari es in the united states and/or other countries. r e b m u n r e d r o / t r a pg n i k r a me g a k c a pg n i g a k c a p g n i p p i h se r u t a r e p m e t 3 2 - i g a 1 0 0 3 4 8 s c i3 2 i a 1 0 0 3 4 8 s c ip o s s t d a e l 4 2e b u tc 5 8 o t c 0 4 - t 3 2 - i g a 1 0 0 3 4 8 s c i3 2 i a 1 0 0 3 4 8 s c ip o s s t d a e l 4 2l e e r & e p a t 0 0 5 2c 5 8 o t c 0 4 - f l 3 2 - i g a 1 0 0 3 4 8 s c id b tp o s s t " e e r f - d a e l " d a e l 4 2e b u tc 5 8 o t c 0 4 - t f l 3 2 - i g a 1 0 0 3 4 8 s c id b tp o s s t " e e r f - d a e l " d a e l 4 2l e e r & e p a t 0 0 5 2c 5 8 o t c 0 4 - . t n a i l p m o c s h o r e r a d n a n o i t a r u g i f n o c e e r f - b p e h t e r a r e b m u n t r a p e h t o t x i f f u s " f l " n a h t i w d e r e d r o e r a t a h t s t r a p : e t o n

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