e u r o q u a r t z l i m i t e d b l a c k n e l l l a n e c r e w k e r n e s o m e r s e t u k t a 1 8 7 h e t e l : + 4 4 ( 0 ) 1 4 6 0 2 3 0 0 0 0 f a x : + 4 4 ( 0 ) 1 4 6 0 2 3 0 0 0 1 in f o @e u r o q u a r t z .c o .u k w w w .e u r o q u a r t z .c o .u k euro quartz outline & dimensions m o d e l n o : 1 8 e q h m 5 3 f re q u e n c y ra n g e : 1 2 . 5 m h z t o 4 2 . 0 m h z e m i re d u c t i o n a n d s p re a d t y p e s : m odulation carrier frequency: o u t p u t l o g i c : c m o s i n p u t v o l t a g e : v d d = + 1 . 8 0 . 1 5 v d c f re q u e n c y s t a b i l i t y c o m m e rc i a l ( 0 ~ 7 0 c ) : 2 5 p p m ( s p e c . c o d e = ? a ? ) 5 0 p p m ( s p e c . c o d e = ? b ? ) 1 0 0 p p m ( s p e c . c o d e = ? c ? ) i n d u s t ri a l ( - 4 0 ~ + 8 5 c ) : 2 5 p p m ( s p e c . c o d e = ? d ? ) 5 0 p p m ( s p e c . c o d e = ? e ? ) 1 0 0 p p m ( s p e c . c o d e = ? f ? ) o u t p u t v o l t a g e h i g h ? 1 ? : 1 . 6 v m i n . , 1 . 8 5 v m a x . o u t p u t v o l t a g e l o w ? 0 ? : 0 . 0 v m a x . , 0 . 2 v m a x . ri s e / f a l l t i m e s : 2 . 5 n s m a x . l o a d : 1 5 p f s t a rt - u p t i m e : 2 m s t y p i c a l , 5 m s m a x . s t a b i l i z a t i o n t i m e : 4 0 m s m a x . o u t p u t i m p e d a n c e : 3 0 w t y p i c a l o u t p u t s l e w ra t e : 0 . 4 v / n s m i n . ; 3 . 0 v / n s m a x . c u rre n t c o n s u m p t i o n : 1 3 m h z : 2 . 0 m a t y p i c a l 1 6 m h z : 2 . 8 m a t y p i c a l 2 5 m h z : 3 . 5 m a t y p i c a l 4 2 m h z : 5 . 0 m a t y p i c a l d u t y c y c l e : 5 0 % 1 0 % ( c l = 1 5 p f , 5 0 %v d d ) c y l e t o c y c l e j i t t e r: 1 0 0 p s m a x . a g e i n g : 5 p p m / y e a r m a x a t t a = 2 5 c p a d 1 o p t i o n : o u t p u t e n a b l e / d i s a b l e . o u t p u t i s h i g h i m p e d a n c e w h e n t a k e n l o w o u t p u t e n a b l e t i m e 1 0 0 m s m a x . p a c k a g i n g : e i a 1 6 m m t a p e a n d re e l , 1 k p e r. s p e c i fi c a t i on p a g e 1 o f 2 e n v i r on m e n t a l s p e c i fi c a t i on ro h s c o m p l i a n c e : ro h s c o m p l i a n t a n d p b ( l e a d ) f re e m o i s t u re s e n s i t i vi t y l e ve l : l e ve l 1 ( i n f i n i t e ) s e c o n d l e ve l i n t e rc o n n e c t : e 4 s t o ra g e t e m p e ra t u re ra n g e : - 5 5 t o + 1 2 5 c h u m i d i t y : 8 5 % rh , 8 5 c f o r 4 8 h o u rs f i n e l e a k / g ro s s l e a k : m i l - s t d - 8 8 3 , m e t h . 1 0 1 4 , c o n d . a m i l - s t d - 8 8 3 , m e t h . 1 0 1 4 , c o n d . c h e rm e t i c s e a l : l e a k ra t e 2 x 1 0 - 8 a t m - c m 3 / s m a x . s o l d e ra b i l i t y : m i l - s t d - 2 0 0 2 f m e t h o d 2 0 8 e re f l o w : 2 6 0 f o r 1 0 s e c o n d s x 2 v i b ra t i o n : m i l - s t d - 2 0 2 f m e t h o d 2 0 4 , 3 5 g , 5 0 h z t o 2 0 0 0 h z s h o c k : m i l - s t d - 2 0 2 f m e t h o d 2 1 3 b , t e s t c o n d i t i o n : e , 1 0 0 0 g ? s i n e w a ve re s i s t a n c e t o s o l ve n t s : m i l - s t d - 2 0 2 , m e t h o d 2 1 5 t e m p e ra t u re c y c l i n g : m i l - s t d - 8 8 3 , m e t h o d 1 0 1 0 e s d ra t i n g : > 2 0 0 0 v ( p e r m i l - s t d - 8 8 3 , m e t h o d 3 0 1 5 ) p a d s u rf a c e f i n i s h : g o l d ( 0 . 3 u m m i n . ) o ve r n i c k e l ( 1 . 2 7 u m t o 8 . 8 9 u m ) w e i g h t o f t h e d e vi c e : 0 . 0 9 g ra m s . 5 x 3 .2 x 1 .2 m m s m d - g r o u p ' f ' ( 1 .8 v o l t s ) 1 8 e qh m 5 3 l o w e m i os c illa t o r provides up to -12db reduction in system emi ?drop-in? replacement for standard clocks no need to re-design printed circuit boards operates with 1.8 volts supply voltage choice of modulation rate and spread miniature package: 3.2 mm x 5.0 mm x 1.2mm fe a t u r e s total % down spread ( d ) c e n t r e s p r e a d ( c ) e m i r e d u c t io n r a t e 0 .5 % - 0 . 5 % ( d 0 . 5 ) 0 . 2 5 % ( c 0 . 2 5 ) - 1 2 d b ( t y p . ) 1 % - 1 % ( d 1 ) 0 . 5 % ( c 0 . 5 ) - 1 6 d b ( t y p . ) 2 % - 2 % ( d 2 ) 1 % ( c 1 . 0 ) - 1 8 d b ( t y p . ) spread type & perce n t a g e a n d e m i r e d u c t i on r a t e s a b s ol u t e m a x i m u m r a t i n g s p o w e r s u p p ly v o lt a g e -0. 5 v m i n . , + 2 . 5 v m a x . i n p u t v o lt a g e v s s - 0 . 5 v m i n . , v d d + 0 . 5 v m a x . ou t p u t v o lt a g e v s s - 0 . 5 v m i n . , v d d + 0 . 5 v m a x . op e r a t io n j u n c t io n t e m p . - 4 0 c m i n . , + 1 2 5 c m a x . ou t p u t c u r r e n t - 1 3 m a m i n . , + 1 3 m a m a x . http://
e u r o q u a r t z l i m i t e d b l a c k n e l l l a n e c r e w k e r n e s o m e r s e t u k t a 1 8 7 h e t e l : + 4 4 ( 0 ) 1 4 6 0 2 3 0 0 0 0 f a x : + 4 4 ( 0 ) 1 4 6 0 2 3 0 0 0 1 in f o @e u r o q u a r t z .c o .u k w w w .e u r o q u a r t z .c o .u k euro quartz p a g e 2 o f 2 18EQHM53-bt-20.000f-c0.5 p a r t n u m b e r c on fi g u r a t i on spr e a d t y p e & p e r c e n t a g e " d 0 .5 " d o w n s p r e a d - 0 . 5 % " d 1 " - 1 % " d 2 " - 2 % " c 0 .2 5 " c e n t r e s p r e a d 0 . 2 5 % " c 0 .5 " 0 . 5 % " c 1 .0 0 . 1 % ?t? f o r t ri s t a t e f re q u e n c y s t a b i l i t y c o d e ? a ? t o ? f ? . s e e s p e c i f i c a t i o n f re q u e n c y ( m h z ) g ro u p ? f ? c h a ra c t e ri s t i c s seri e s d e s i g n a t i o n 3 .2 x 5 x 1.2mm smd - group 'f' (1.8 volts) 1 8 e qh m 5 3 l o w e m i os c illa t o r m od u l a t i on t y p e s - e x a m p l e s d e s c r i p t i on 1 8 e q h m 5 3 s e ri e s l o w e m i o s c i l l a t o rs c a n re d u c e s y s t e m e m i b y - 1 5 d b. t h e o s c i l l a t o rs a re a ? d ro p - i n ? re p l a c e m e n t f o r s t a n d a rd o s c i l l a t o rs . e m i re d u c t i o n i s a c h i e ve d b y t h e u s e o f s p re a d s p e c t ru m t e c h n o l o g y w h e re b y t h e m o d e e n e rg y i s s p re a d o ve r a w i d e r b a n d w i d t h . t h e m o d u l a t i o n c a rri e r f re q u e n c y , o p e ra t i n g i n t h e k h z re g i o n , m a k e s t h e p ro c e s s t ra n s p a re n t t o t h e o s c i l l a t o r f re q u e n c y . t h e re i s a c h o i c e o f m o d u l a t i o n ra t e s a n d s p re a d t o s u i t a p p l i c a t i o n re q u i re m e n t s . s p r e a d s p e c t r u m t e c h n ol og y un l i k e a c o n ve n t i o n a l c l o c k o s c i l l a t o r, i n a s p re a d s p e c t ru m c l o c k o s c i l l a t o r t h e m o d e e n e rg y i s s p re a d o ve r a w i d e r b a n d w i d t h . t h i s i s a c h i e ve d b y t h e f re q u e n c y m o d u l a t i o n t e c h n i q u e . t h e c o n t ro l l e d m o d u l a t i o n p ro c e s s m a y b e a p p l i e d t o t h e ' d o w n ' s i d e o f t h e n o m i n a l f re q u e n c y ( k n o w n a s d ow n s p r e a d , ) o r s p re a d e q u a l l y e i t h e r s i d e o f n o m i n a l ( c e n t r e s p r e a d ) . d o w n s p re a d i s p re f e rre d i f o ve r- c l o c k i n g w o u l d c a u s e a p ro b l e m t o t h e s y s t e m . i n e l e c t ri c a l s y s t e m s t h e p ri n c i p a l c a u s e o f e l e c t ro - m a g n e t i c i n t e rf e re n c e ( e m i ) i s t h e s y s t e m c l o c k o s c i l l a t o r. t ra d i t i o n a l m e t h o d s o f ' p a t c h i n g - u p ' s y s t e m s w i t h t o o h i g h a l e ve l o f e m i i s t o u s e f e rri t e b e a d s , f i l t e rs , g ro u n d p l a n e s , m e t a l s h i e l d i n g a n d s i m i l a r c o s t l y m e t h o d s , h o w e ve r, t h e m o s t e f f i c i e n t a n d e c o n o m i c m e t h o d t o re d u c e e m i i s t o re d u c e i t a t s o u rc e : re p l a c e t h e s y s t e m c l o c k o c i l l a t o r w i t h a l o w e m i c l o c k o s c i l l a t o r. c o m p a re d w i t h c o n ve n t i o n a l c l o c k o s c i l l a t o rs , s p re a d s p e c t ru m ( d i t h e re d ) o s c i l l a t o rs c a n re d u c e e m i b y a s m u c h a s - 1 5 d b. t h e p a rt i s a ' d ro p - i n ' re p l a c e m e n t f o r s t a n d a rd c l o c k o s c i l l a t o rs h e n c e t h e re i s n o re q u i re m e n t t o re - d e s i g n e x i s t i n g p c bs . i n t r od u c t i on
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