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integrated circuit systems, inc. 840002agi www.icst.com/products/hiperclocks.html rev. a march 10, 2005 1 ICS840002i f emto c locks ? c rystal - to - lvcmos/lvttl f requency s ynthesizer g eneral d escription the ICS840002i is a 2 output lvcmos/lvttl synthesizer optimized to generate fibre channel reference clock frequencies and is a member of the hiperclocks tm family of high performance clock solutions from ics. using a 26.5625mhz 18pf parallel resonant crystal, the following frequencies can be generated based on the 2 frequency select pins (f_sel1:0): 212.5mhz, 159.375mhz, 156.25mhz, 106.25mhz, and 53.125mhz. the ICS840002i uses ics? 3 rd generation low phase noise vco technology and can achieve 1ps or lower typical rms phase jitter, easily meeting fibre channel jitter requirements. the ICS840002i is packaged in a 16-pin tssop package. hiperclocks? ics b lock d iagram p in a ssignment f_sel0 nxtal_sel test_clk oe mr npll_sel v dda v dd 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 f_sel1 gnd gnd q0 q1 v ddo xtal_in xtal_out ICS840002i 16-lead tssop 4.4mm x 5.0mm x 0.92mm package body g package top view f eatures ? two lvcmos outputs @ 3.3v, 17 typical output impedance ? selectable crystal oscillator interface or lvcmos single-ended input ? output frequency range: 46.66mhz - 233.33mhz ? vco range: 560mhz - 700mhz ? supports the following output frequencies: 212.5mhz, 159.375mhz, 156.25mhz, 106.25mhz and 53.125mhz ? rms phase jitter @ 212.5mhz (637khz - 10mhz): 0.83ps (typical) typical phase noise at 212.5mhz: offset noise p o w er 100hz ............... -91.3 dbc/hz 1khz .............. -114.3 dbc/hz 10khz .............. -120.7 dbc/hz 100khz .............. -120.2 dbc/hz ? power supply modes: core/output 3.3v/3.3v 3.3v/2.5v 2.5v/2.5v ? -40c to 85c ambient operating temperature ? lead-free package rohs compliant q0 q1 oe f_sel1:0 npll_sel nxtal_sel xtal_in xtal_out test_clk mr osc phase detector vco m = 24 (fixed) f_sel1:0 0 0 3 0 1 4 1 0 6 1 1 12 (default) 0 1 1 0 2 n 26.5625mhz pullup pulldown pulldown pulldown pullup:pullup pulldown f requency s elect f unction t able y c n e u q e r f t u p n i ) z h m ( s t u p n i y c n e u q e r f t u p t u o ) z h m ( 1 l e s _ f0 l e s _ fe u l a v r e d i v i d me u l a v r e d i v i d ne u l a v o i t a r n / m 5 2 6 5 . 6 2004 238 5 . 2 1 2 5 2 6 5 . 6 2014 246 5 7 3 . 9 5 1 5 2 6 5 . 6 2104 264 5 2 . 6 0 1 5 2 6 5 . 6 2114 22 12 5 2 1 . 3 5 6 6 1 4 0 . 6 2014 246 5 2 . 6 5 1
integrated circuit systems, inc. 840002agi www.icst.com/products/hiperclocks.html rev. a march 10, 2005 2 ICS840002i f emto c locks ? c rystal - to - lvcmos/lvttl f requency s ynthesizer t able 1. p in d escriptions t able 2. p in c haracteristics t able 3. f requency s elect f unction t able y c n e u q e r f t u p n i ) z h m ( s t u p n i y c n e u q e r f t u p t u o ) z h m ( 1 l e s _ f0 l e s _ fe u l a v r e d i v i d me u l a v r e d i v i d ne u l a v r e d i v i d n / m 5 2 6 5 . 6 2004 23 8 5 . 2 1 2 5 2 6 5 . 6 2014 24 6 5 7 3 . 9 5 1 5 2 6 5 . 6 2104 26 4 5 2 . 6 0 1 5 2 6 5 . 6 2114 22 12 5 2 1 . 3 5 6 6 1 4 0 . 6 2014 24 6 5 2 . 6 5 1 r e b m u ne m a ne p y tn o i t p i r c s e d , 1 6 1 , 0 l e s _ f 1 l e s _ f t u p n ip u 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 y c n e u q e r f 2l e s _ l a t x nt u p n in w o d l l u p e c n e r e f e r l l p e h t s a s t u p n i k l c _ t s e t r o l a t s y r c e h t n e e w t e b s t c e l e s l a t x s t c e l e s , w o l n e h w . k l c _ t s e t s t c e l e s , h g i h n e h w . e c r u o s . 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 t u p n i 3k l c _ t s e tt 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 d e d n e - e l g n i s 4e ot u p n ip u l l u p e h t , w o l n e h w . e v i t c a e r a s t u p t u o e h t , h g i h n e h w . n i p e l b a n e 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 . e t a t s e c n a d e p m i h g i h a n i e r a s t u p t u o 5r 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 l a n r e t n i e h t , w o l c i g o l n e h w . w o l o g o t s t u p t u o e v i t c a g n i s u a c t e s 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 . d e l b a n e e r a s t u p t u o e h t d n a s r e d i v i d 6l e s _ l l p nt u p n in w o d l l u p . t u p t u o o c v e h t m o r f n e v i r d s i t u p t u o e h t , w o l n e h w . s s a p y b l l p = y c n e u q e r f t u p t u o e h t d n a d e s s a p y b s i l l p e h t , h g i h n e h w . r e d i v i d t u p t u o n / y c n e u q e r f 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 7v a d d r e w o p. n i p y l p p u s g o l a n a 8v d d r e w o p. n i p y l p p u s e r o c , 9 0 1 , t u o _ l a t x n i _ l a t x t u p n i . t u p n i e h t s i n i _ l a t x . e c a f r e t n i r o t a l l i c s o l a t s y r c . t u p t u o e h t s i t u o _ l a t x 1 1v o d d r e w o p. n i p y l p p u s t u p t u o 3 1 , 2 10 q , 1 qt 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 . s t u p t u o k c o l c d e d n e - e l g n i s 5 1 , 4 1d n gr e w o p. d n u o r g y l p p u s r e w o p : e t o n p u l l u p d n a n w o d 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 c d p e c n a t i c a p a c n o i t a p i s s i d r e w o p 8f p 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 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 t u o e c n a d e p m i t u p t u o % 5 v 3 . 34 17 11 2 % 5 v 5 . 26 11 25 2
integrated circuit systems, inc. 840002agi www.icst.com/products/hiperclocks.html rev. a march 10, 2005 3 ICS840002i f emto c locks ? c rystal - to - lvcmos/lvttl f requency s ynthesizer a bsolute m aximum r atings supply voltage, v dd 4.6v inputs, v i -0.5v to v dd + 0.5 v outputs, v o -0.5v to v dd + 0.5v package thermal impedance, ja 89c/w (0 lfpm) 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 dd = v dda = v ddo = 2.5v5%, t a = -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 d d e g a t l o v y l p p u s e r o c 5 7 3 . 25 . 25 2 6 . 2v v a d d e g a t l o v y l p p u s g o l a n a 5 7 3 . 25 . 25 2 6 . 2v v o d d e g a t l o v y l p p u s t u p t u o 5 7 3 . 25 . 25 2 6 . 2v i d d t n e r r u c y l p p u s r e w o p 5 9a m i a d d t n e r r u c y l p p u s g o l a n a 2 1a m i o d d t n e r r u c y l p p u s t u p t u o 5a m t able 4a. p ower s upply dc c haracteristics , v dd = v dda = 3.3v5%, v ddo = 3.3v5% or 2.5v5%, t a = -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 d d e g a t l o v y l p p u s e r o c 5 3 1 . 33 . 35 6 4 . 3v v a d d e g a t l o v y l p p u s g o l a n a 5 3 1 . 33 . 35 6 4 . 3v v o d d e g a t l o v y l p p u s t u p t u o 5 3 1 . 33 . 35 6 4 . 3v 5 7 3 . 25 . 25 2 6 . 2v i d d t n e r r u c y l p p u s r e w o p 0 0 1a m i a d d t n e r r u c y l p p u s g o l a n a 2 1a m i o d d t n e r r u c y l p p u s t u p t u o 5a m
integrated circuit systems, inc. 840002agi www.icst.com/products/hiperclocks.html rev. a march 10, 2005 4 ICS840002i f emto c locks ? c rystal - to - lvcmos/lvttl f requency s ynthesizer 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 f y c n e u q e r f 5 2 6 5 . 6 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 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 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 d d v 5 6 4 . 3 =2v d d 3 . 0 +v v d d v 5 2 6 . 2 =7 . 1v d d 3 . 0 +v v l i e g a t l o v w o l t u p n i v d d v 5 6 4 . 3 =3 . 0 -8 . 0v v d d v 5 2 6 . 2 =3 . 0 -7 . 0v i h i t u p n i t n e r r u c h g i h e o v d d v = n i v 5 6 4 . 3 = v 5 2 6 . 2 r o 5a , r m , l e s _ l l p n , 1 : 0 l e s _ f k l c _ t s e t , l e s _ l a t x n v d d v = n i v 5 6 4 . 3 = v 5 2 6 . 2 r o 0 5 1a i l i t u p n i t n e r r u c w o l e o v d d , v 5 2 6 . 2 r o v 5 6 4 . 3 = v n i v 0 = 0 5 1 -a , r m , l e s _ l l p n , 1 : 0 l e s _ f k l c _ t s e t , l e s _ l a t x n v d d , v 5 2 6 . 2 r o v 5 6 4 . 3 = v n i v 0 = 5 -a v h o 1 e t o n ; e g a t l o v h g i h t u p t u o v o d d % 5 v 3 . 3 =6 . 2v v o d d % 5 v 5 . 2 =8 . 1v v l o 1 e t o n ; e g a t l o v w o l t u p t u ov o d d % 5 v 5 . 2 r o v 3 . 3 =5 . 0v 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 o d d . t i u c r i c t s e t d a o l t u p t u o , 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 / t able 4c. lvcmos/lvttl dc c haracteristics , v dd = v dda = v ddo = 3.3v5% or 2.5v5%, or v dd = v dda = 3.3v5%, v ddo = 2.5v5%, t a = -40c to 85c
integrated circuit systems, inc. 840002agi www.icst.com/products/hiperclocks.html rev. a march 10, 2005 5 ICS840002i f emto c locks ? c rystal - to - lvcmos/lvttl f requency s ynthesizer t able 6a. ac c haracteristics , v dd = v dda = v ddo = 3.3v5%, t a = -40c to 85c t able 6b. ac c haracteristics , v dd = v dda = 3.3v5%, v ddo = 2.5v5%, t a = -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 e g n a r y c n e u q e r f t u p t u o 0 0 = ] 0 : 1 [ l e s _ f7 6 . 6 8 17 6 . 6 2 2z h m 1 0 = ] 0 : 1 [ l e s _ f0 4 10 7 1z h m 0 1 = ] 0 : 1 [ l e s _ f3 3 . 3 93 3 . 3 1 1z h m 1 1 = ] 0 : 1 [ l e s _ f7 6 . 6 47 6 . 6 5z h m t ) o ( k s3 , 1 e t o n ; w e k s t u p t u o 2 1s p t ) ? ( t i j ; ) m o d n a r ( r e t t i j e s a h p s m r 2 e t o n : e g n a r n o i t a r g e t n i @ z h m 5 . 2 1 2 z h m 0 1 - z h k 7 3 6 3 8 . 0s p : e g n a r n o i t a r g e t n i @ z h m 5 7 3 . 9 5 1 z h m 0 1 - z h k 7 3 6 2 6 . 0s p : e g n a r n o i t a r g e t n i @ z h m 5 2 . 6 5 1 z h m 0 2 - z h m 5 7 8 . 1 9 5 . 0s p : e g n a r n o i t a r g e t n i @ z h m 5 2 . 6 0 1 z h m 0 1 - z h k 7 3 6 0 8 . 0s p : e g n a r n o i t a r g e t n i @ z h m 5 2 1 . 3 5 z h m 0 1 - z h k 7 3 6 8 6 . 0s p t r t / f e m i t l l a f / e s i r t u p t u o% 0 8 o t % 0 20 0 20 0 7s p c d oe l c y c y t u d t u p t u o ] 0 : 1 [ l e s _ f 0 06 44 5% 0 0 = ] 0 : 1 [ l e s _ f2 48 5% . s n o i t i d n o c d a o l l a u q e h t i w d n a s e g a t l o v y l p p u s e m a s e h t t a s t u p t u o n e e w t e b w e k s s a d e n i f e d : 1 e t o n v t a d e r u s a e m o d d . 2 / : 2 e t o n. t o l p e s i o n e s a h p e h t o t r e f e r e s a e l p . 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 e g n a r y c n e u q e r f t u p t u o 0 0 = ] 0 : 1 [ l e s _ f7 6 . 6 8 17 6 . 6 2 2z h m 1 0 = ] 0 : 1 [ l e s _ f0 4 10 7 1z h m 0 1 = ] 0 : 1 [ l e s _ f3 3 . 3 93 3 . 3 1 1z h m 1 1 = ] 0 : 1 [ l e s _ f7 6 . 6 47 6 . 6 5z h m t ) o ( k s3 , 1 e t o n ; w e k s t u p t u o 2 1s p t ) ? ( t i j ; ) m o d n a r ( r e t t i j e s a h p s m r 2 e t o n : e g n a r n o i t a r g e t n i @ z h m 5 . 2 1 2 z h m 0 1 - z h k 7 3 6 3 7 . 0s p : e g n a r n o i t a r g e t n i @ z h m 5 7 3 . 9 5 1 z h m 0 1 - z h k 7 3 6 2 6 . 0s p : e g n a r n o i t a r g e t n i @ z h m 5 2 . 6 5 1 z h m 0 2 - z h m 5 7 8 . 1 6 5 . 0s p : e g n a r n o i t a r g e t n i @ z h m 5 2 . 6 0 1 z h m 0 1 - z h k 7 3 6 6 7 . 0s p : e g n a r n o i t a r g e t n i @ z h m 5 2 1 . 3 5 z h m 0 1 - z h k 7 3 6 2 7 . 0s p t r t / f e m i t l l a f / e s i r t u p t u o% 0 8 o t % 0 20 0 20 0 7s p c d oe l c y c y t u d t u p t u o ] 0 : 1 [ l e s _ f 0 06 44 5% 0 0 = ] 0 : 1 [ l e s _ f2 48 5% . s n o i t i d n o c d a o l l a u q e h t i w d n a s e g a t l o v y l p p u s e m a s e h t t a s t u p t u o n e e w t e b w e k s s a d e n i f e d : 1 e t o n v t a d e r u s a e m o d d . 2 / : 2 e t o n. t o l p e s i o n e s a h p e h t o t r e f e r e s a e l p . 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
integrated circuit systems, inc. 840002agi www.icst.com/products/hiperclocks.html rev. a march 10, 2005 6 ICS840002i f emto c locks ? c rystal - to - lvcmos/lvttl f requency s ynthesizer t able 6c. ac c haracteristics , v dd = v dda = v ddo = 2.5v5%, t a = -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 e g n a r y c n e u q e r f t u p t u o 0 0 = ] 0 : 1 [ l e s _ f7 6 . 6 8 17 6 . 6 2 2z h m 1 0 = ] 0 : 1 [ l e s _ f0 4 10 7 1z h m 0 1 = ] 0 : 1 [ l e s _ f3 3 . 3 93 3 . 3 1 1z h m 1 1 = ] 0 : 1 [ l e s _ f7 6 . 6 47 6 . 6 5z h m t ) o ( k s3 , 1 e t o n ; w e k s t u p t u o 2 1s p t ) ? ( t i j ; ) m o d n a r ( r e t t i j e s a h p s m r 2 e t o n : e g n a r n o i t a r g e t n i @ z h m 5 . 2 1 2 z h m 0 1 - z h k 7 3 6 8 7 . 0s p : e g n a r n o i t a r g e t n i @ z h m 5 7 3 . 9 5 1 z h m 0 1 - z h k 7 3 6 7 6 . 0s p : e g n a r n o i t a r g e t n i @ z h m 5 2 . 6 5 1 z h m 0 2 - z h m 5 7 8 . 1 9 6 . 0s p : e g n a r n o i t a r g e t n i @ z h m 5 2 . 6 0 1 z h m 0 1 - z h k 7 3 6 2 8 . 0s p : e g n a r n o i t a r g e t n i @ z h m 5 2 1 . 3 5 z h m 0 1 - z h k 7 3 6 5 7 . 0s p t r t / f e m i t l l a f / e s i r t u p t u o% 0 8 o t % 0 20 0 20 0 7s p c d oe l c y c y t u d t u p t u o ] 0 : 1 [ l e s _ f 0 06 44 5% 0 0 = ] 0 : 1 [ l e s _ f2 48 5% . s n o i t i d n o c d a o l l a u q e h t i w d n a s e g a t l o v y l p p u s e m a s e h t t a s t u p t u o n e e w t e b w e k s s a d e n i f e d : 1 e t o n v t a d e r u s a e m o d d . 2 / : 2 e t o n. t o l p e s i o n e s a h p e h t o t r e f e r e s a e l p . 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
integrated circuit systems, inc. 840002agi www.icst.com/products/hiperclocks.html rev. a march 10, 2005 7 ICS840002i f emto c locks ? c rystal - to - lvcmos/lvttl f requency s ynthesizer t ypical p hase n oise at 53.125mh z @3.3v 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 -170 -180 -190 53.125mhz rms phase jitter (random) 637khz to 10mhz = 0.68ps (typical) o ffset f requency (h z ) n oise p ower dbc hz phase noise result by adding fibre channel filter to raw data raw phase noise data fibre channel filter ? ? ? 100 1k 10k 100k 1m 10m 100m t ypical p hase n oise at 212.5mh z @3.3v 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 -170 -180 -190 212.5mhz rms phase jitter (random) 637khz to 10mhz = 0.83ps (typical) o ffset f requency (h z ) n oise p ower dbc hz phase noise result by adding fibre channel to raw data raw phase noise data fibre channel filter ? ? ? 100 1k 10k 100k 1m 10m 100m
integrated circuit systems, inc. 840002agi www.icst.com/products/hiperclocks.html rev. a march 10, 2005 8 ICS840002i f emto c locks ? c rystal - to - lvcmos/lvttl f requency s ynthesizer p arameter m easurement i nformation pulse width t period t pw t period odc = v ddo 2 q0, q1 rms p hase j itter o utput s kew 3.3v c ore /3.3v o utput l oad ac t est c ircuit scope qx lvcmos 1.65v5% -1.65v5% o utput d uty c ycle /p ulse w idth /p eriod clock outputs 20% 80% 80% 20% t r t f v dd , v dda , v ddo gnd phase noise mas k offset frequency f 1 f 2 phase noise plot rms jitter = area under the masked phase noise plot noise power t sk(o) v ddo 2 v ddo 2 qx qy o utput r ise /f all t ime scope qx lvcmos 2.05v5% -1.25v5% v dd , v dda gnd 1.25v5% v ddo 3.3v c ore /2.5v o utput l oad ac t est c ircuit 2.5v c ore /2.5v o utput l oad ac t est c ircuit scope qx lvcmos 1.25v5% -1.25v5% v dd , v dda , v ddo gnd
integrated circuit systems, inc. 840002agi www.icst.com/products/hiperclocks.html rev. a march 10, 2005 9 ICS840002i f emto c locks ? c rystal - to - lvcmos/lvttl f requency s ynthesizer a pplication i nformation as in any high speed analog circuitry, the power supply pins are vulnerable to random noise. the ICS840002i provides separate power supplies to isolate any high switching noise from the outputs to the internal pll. v dd , v dda , and v ddo 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 dda . p ower s upply f iltering t echniques f igure 1. p ower s upply f iltering 10 v dda 10 f .01 f 3.3v or 2.5v .01 f v dd c rystal i nput i nterface the ICS840002i has been characterized with 18pf parallel resonant crystals. the capacitor values shown in figure 2 figure 2. c rystal i npu t i nterface below were determined using a 26.5625mhz 18pf parallel resonant crystal and were chosen to minimize the ppm error. ICS840002i c1 22p x1 18pf parallel crystal c2 22p xtal_out xtal_in
integrated circuit systems, inc. 840002agi www.icst.com/products/hiperclocks.html rev. a march 10, 2005 10 ICS840002i f emto c locks ? c rystal - to - lvcmos/lvttl f requency s ynthesizer l ayout g uideline figure 3 shows a schematic example of the ICS840002i. an example of lvcmos termination is shown in this schematic. additional lvcmos termination approaches are shown in the lvcmos termination application note. in this example, an 18 pf parallel resonant 26.5625mhz crystal is used. the c1=22pf f igure 3. ICS840002i s chematic e xample and c2=22pf are recommended for frequency accuracy. for different board layout, the c1 and c2 may be slightly adjusted for optimizing frequency accuracy. 1k pullup or pulldown re- sistors can be used for the logic control input pins. xta l1 optional termination rd1 not install ru1 1k vdd c4 0.01u if not using the crystal input, it can be left floating. for additional protection the xtal_in pin can be tied to ground. zo = 50 ohm lvcmos set logic input to '0' unused output can be left floating. there should no trace attached to unused output. device characterized with all outputs terminated. r1 10 r4 100 to logic input pins set logic input to '1' logic control input examples r2 33 c6 0.1u vdda c2 22pf to logic input pins zo = 50 ohm x1 vdd rd2 1k c5 0.1u c3 10uf vdd r3 100 vdd lvcmos xta l 2 u1 ICS840002i 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 fsel0 xtal_sel test_c lk oe mr npll_sel vdda vdd xtal_out xta l _ i n vddo q1 q0 gnd gnd fsel1 ru2 not install vdd c1 22pf
integrated circuit systems, inc. 840002agi www.icst.com/products/hiperclocks.html rev. a march 10, 2005 11 ICS840002i f emto c locks ? c rystal - to - lvcmos/lvttl f requency s ynthesizer r eliability i nformation t ransistor c ount the transistor count for ICS840002i is: 3085 t able 7. ja vs . a ir f low t able for 16 l ead tssop ja by velocity (linear feet per minute) 0 200 500 single-layer pcb, jedec standard test boards 137.1c/w 118.2c/w 106.8c/w multi-layer pcb, jedec standard test boards 89.0c/w 81.8c/w 78.1c/w note: most modern pcb designs use multi-layered boards. the data in the second row pertains to most designs.
integrated circuit systems, inc. 840002agi www.icst.com/products/hiperclocks.html rev. a march 10, 2005 12 ICS840002i f emto c locks ? c rystal - to - lvcmos/lvttl f requency s ynthesizer p ackage o utline - g s uffix for 16 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 n6 1 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 9 . 40 1 . 5 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
integrated circuit systems, inc. 840002agi www.icst.com/products/hiperclocks.html rev. a march 10, 2005 13 ICS840002i f emto c locks ? c rystal - to - lvcmos/lvttl f requency s ynthesizer 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. 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 i g a 2 0 0 0 4 8 s c ii a 2 0 0 0 4 8 s c ip o s s t d a e l 6 1e b u t r e p 4 9c 5 8 o t c 0 4 - t i g a 2 0 0 0 4 8 s c ii a 2 0 0 0 4 8 s c ip o s s t d a e l 6 10 0 5 2c 5 8 o t c 0 4 - f l i g a 2 0 0 0 4 8 s c id b tp o s s t " e e r f - d a e l " d a e l 6 1e b u t r e p 4 9c 5 8 o t c 0 4 - t f l i g a 2 0 0 0 4 8 s c id b tp o s s t " e e r f - d a e l " d a e l 6 10 0 5 2c 5 8 o t c 0 4 - the aforementioned trademarks, hiperclocks? and f emto c locks ? are a trademark of integrated circuit systems, inc. or its subsidiaries in the united states and/or other countries.

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