d a 8 4 4 4 a . 0 0 5 m a y 3 1 , 1 9 9 6 1 r e f e r e n c e v o l t a g e g e n e r a t o r 6 - b i t d a c 6 - b i t d a c 6 - b i t d a c 6 - b i t d a c 6 - b i t d a c 6 - b i t d a c 6 - b i t d a c d a c 7 6 - b i t d a c d a c 6 d a c 5 d a c 4 d a c 3 d a c 2 d a c 1 d a c 0 v d d a 0 5 s d a 3 s c l 4 a 1 6 a 2 7 v m a x 2 g n d i c b u s s l a v e r e c e i v e r 2 1 8 m a s 8 4 4 4 a o c t a l 6 - b i t t r i m m e r i c ? e i g h t d i s c r e t e d a c s ? i 2 c - b u s s l a v e r e c e i v e r ? v o l t a g e o u t p u t d e s c r i p t i o n t h e m a s 8 4 4 4 a c o m p r i s e s e i g h t d i g i t a l t o a n a l o g c o n v e r t e r s ( d a c s ) e a c h c o n t r o l l e d b y a t w o - w i r e i 2 c b u s . t h e d a c s a r e i n d i v i d u a l l y p r o g r a m m e d u s i n g a n 6 - b i t w o r d t o s e l e c t a n o u t p u t f r o m o n e o f 6 4 v o l t a g e s t e p s . t h e m a x i m u m o u t p u t v o l t a g e o f a l l d a c s i s s e t b y v m a x . a t p o w e r - o n a l l o u t p u t s a r e s e t t o t h e i r l o w e s t v a l u e . t h e i 2 c - b u s s l a v e r e c e i v e r h a s 3 p r o g r a m m a b l e a d d r e s s p i n s ( 2 i n t h e s o 1 6 p a c k a g e ) . f e a t u r e s ? r a i l t o r a i l o u t p u t s t a g e s ? o c t a l 6 - b i t d a c s o n a s i n g l e m o n o l i t h i c c h i p ? p o w e r s u p p l y r a n g e f r o m + 5 v t o + 1 2 v ? - 2 5 c t o + 8 5 c t e m p e r a t u r e r a n g e ? 1 6 - p i n p d i l a n d s o p a c k a g e ? p i n t o p i n c o m p a t i b i l i t y w i t h t d a 8 4 4 4 a p p l i c a t i o n ? t r i m m e r r e p l a c e m e n t ? a u t o m a t i c g a i n c o n t r o l ? h i g h r e s o l u t i o n m o n i t o r s b l o c k d i a g r a m
d a 8 4 4 4 a . 0 0 5 m a y 3 1 , 1 9 9 6 2 1 2 3 4 5 6 7 8 s o 1 6 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 d a c 7 d a c 6 d a c 5 d a c 4 d a c 3 d a c 2 d a c 1 d a c 0 v d d v m a x s d a s c l n c a 0 a 1 g n d p d i p 1 6 v d d v m a x s d a s c l a 0 a 1 a 2 g n d 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 d a c 7 d a c 6 d a c 5 d a c 4 d a c 3 d a c 2 d a c 1 d a c 0 m a s 8 4 4 4 a n m a s 8 4 4 4 a s p i n c o n f i g u r a t i o n p i n d e s c r i p t i o n p i n n a m e p i n n o . i / o f u n c t i o n p d i p 1 6 s o 1 6 v d d 1 1 p p o s i t i v e s u p p l y v o l t a g e v m a x 2 2 i c o n t r o l i n p u t f o r d a c m a x i m u m o u t p u t v o l t a g e s d a 3 3 i / o i 2 c b u s s e r i a l d a t a i n p u t / o u t p u t s c l 4 4 i i 2 c b u s s e r i a l d a t a c l o c k a 0 5 6 i p r o g r a m m a b l e a d d r e s s b i t s f o r i 2 c b u s s l a v e r e c e i v e r a 1 6 7 i p r o g r a m m a b l e a d d r e s s b i t s f o r i 2 c b u s s l a v e r e c e i v e r a 2 7 n c i p r o g r a m m a b l e a d d r e s s b i t s f o r i 2 c b u s s l a v e r e c e i v e r g n d 8 8 g g r o u n d d a c 0 9 9 o a n a l o g v o l t a g e o u t p u t d a c 1 1 0 1 0 o a n a l o g v o l t a g e o u t p u t d a c 2 1 1 1 1 o a n a l o g v o l t a g e o u t p u t d a c 3 1 2 1 2 o a n a l o g v o l t a g e o u t p u t d a c 4 1 3 1 3 o a n a l o g v o l t a g e o u t p u t d a c 5 1 4 1 4 o a n a l o g v o l t a g e o u t p u t d a c 6 1 5 1 5 o a n a l o g v o l t a g e o u t p u t d a c 7 1 6 1 6 o a n a l o g v o l t a g e o u t p u t
d a 8 4 4 4 a . 0 0 5 m a y 3 1 , 1 9 9 6 3 a b s o l u t e m a x i m u m r a t i n g s ( c o n d i t i o n s ) p a r a m e t e r s y m b o l c o n d i t i o n s m i n m a x u n i t s u p p l y v o l t a g e v d d - 0 . 5 1 8 v s u p p l y c u r r e n t i d d - 1 0 4 0 i 2 c - b u s l i n e v o l t a g e v ( 3 ) , v ( 4 ) - 0 . 5 5 . 9 v i n p u t v o l t a g e v i n - 0 . 5 v d d + 0 . 5 v o u t p u t v o l t a g e v o - 0 . 5 v d d + 0 . 5 m a x i m u m c u r r e n t o n a n y p i n ( e x c e p t p i n s 1 a n d 8 ) i m a x 1 0 m a t o t a l p o w e r d i s s i p a t i o n p t o t 5 0 0 m w o p e r a t i n g a m b i e n t t e m p e r a t u r e r a n g e t a m b - 2 0 + 7 0 o c s t o r a g e t e m p e r a t u r e r a n g e t s t g - 6 5 + 1 5 0 o c
! " # $&%&'!()$"* ')+-, # ./* '!(!0!'&12#"# /3)4 57698:$";/ @&a o c b9c7d dfehg9i!cj&k&l m!non)prq s!m"t u-v nrmwn!x!m&yrv z v m![!\ p a r a m e t e r s y m b o l c o n d i t i o n s m i n t y p m a x u n i t s u p p l y v o l t a g e v d d 4 . 5 1 2 1 3 . 2 v s u p p l y c u r r e n t i d d n o l o a d s 6 . 0 1 0 . 0 1 7 . 0 m a v o l t a g e l e v e l f r o m p o w e r v 1 1 4 v t o t a l p o w e r d i s s i p a t i o n p t o t n o l o a d s , v m a x = v d d 1 2 0 m w e l e c t r i c a l c h a r a c t e r i s t i c s ] i n p u t s s d a , s c l i n p u t ( p i n s 3 , 4 ) ( a l l v o l t a g e s a r e w i t h r e s p e c t t o g n d ; t a m b = 2 5 o c ; v d d = 1 2 v u n l e s s o t h e r w i s e s p e c i f i e d ) p a r a m e t e r s y m b o l c o n d i t i o n s m i n t y p m a x u n i t i n p u t v o l t a g e r a n g e v i 0 5 . 5 v i n p u t l o w v o l t a g e v i l 1 . 0 v i n p u t h i g h v o l t a g e v i h 3 . 0 v i n p u t c u r r e n t l o w i i l v ( 3 ) , v ( 4 ) = - 0 . 3 v - 1 0 a i n p u t c u r r e n t h i g h v i h v ( 3 ) , v ( 4 ) = 6 . 0 v + 1 0 a
d a 8 4 4 4 a . 0 0 5 m a y 3 1 , 1 9 9 6 4 e l e c t r i c a l c h a r a c t e r i s t i c s a d d r e s s i n p u t ( p i n s 5 , 6 , 7 ) ( a l l v o l t a g e s a r e w i t h r e s p e c t t o g n d ; t a m b = 2 5 o c ; v d d = 1 2 v u n l e s s o t h e r w i s e s p e c i f i e d ) p a r a m e t e r s y m b o l c o n d i t i o n s m i n t y p m a x u n i t i n p u t v o l t a g e r a n g e v i 0 v d d v i n p u t l o w v o l t a g e v i l 1 . 0 v i n p u t h i g h v o l t a g e v i h 2 . 2 v i n p u t c u r r e n t l o w i i l - 7 - 1 0 a i n p u t c u r r e n t h i g h i i h 1 a ( a l l v o l t a g e s a r e w i t h r e s p e c t t o g n d ; t a m b = 2 5 o c ; v d d = 1 2 v u n l e s s o t h e r w i s e s p e c i f i e d ) p a r a m e t e r s y m b o l c o n d i t i o n s m i n t y p m a x u n i t i n p u t c u r r e n t i 2 7 1 0 a e f f e c t i v e v o l t a g e r a n g e v m a x 1 . 0 v d d - 2 . 0 v ^ d a c o u t p u t s ( p i n 9 t o 1 6 ) ( a l l v o l t a g e s a r e w i t h r e s p e c t t o g n d ; t a m b = 2 5 o c ; v d d = 1 2 v u n l e s s o t h e r w i s e s p e c i f i e d ) p a r a m e t e r s y m b o l c o n d i t i o n s m i n t y p m a x u n i t o u t p u t v o l t a g e r a n g e v o 0 . 1 v d d - 0 . 5 v m i n i m u m o u t p u t v o l t a g e v o m i n d a t a = 0 0 ; i o = + 2 m a 0 . 1 0 . 4 0 . 5 v m a x o u t p u t v o l t a g e v o m a x d a t a = 3 f ; i o = - 2 m a ; v m a x = 1 0 1 1 . 1 1 1 . 5 v d a t a = 3 f ; i o = - 2 m a ; s e e n o t e 1 t e m p e r a t u r e c o e f f i c i e n t t c 1 m v / k g a i n e r r o r d a t a = 3 f 2 % o u t p u t i m p e d a n c e z o d a t a = 1 f ; - 2 m a < i o < + 2 m a 5 0 o u t p u t c a p a c i t i v e l o a d c o 2 n f n o t e 1 : v o m a x = v m a x + v o ( 0 0 ) s d a o u t p u t ( p i n 3 ) ( a l l v o l t a g e s a r e w i t h r e s p e c t t o g n d ; t a m b = 2 5 o c ; v d d = 1 2 v u n l e s s o t h e r w i s e s p e c i f i e d ) p a r a m e t e r s y m b o l c o n d i t i o n s m i n t y p m a x u n i t o u t p u t v o l t a g e l o w v o l i 3 = 3 . 0 m a 0 . 2 0 . 4 v s i n k c u r r e n t i s i n k 3 8 m a
d a 8 4 4 4 a . 0 0 5 m a y 3 1 , 1 9 9 6 5 s d a s c l b i t t r a n s f e r o n t h e i c - b u s 2 d a t a l i n e s t a b l e ( d a t a v a l i d ) c h a n g e o f d a t a a l l o w e d s p 1 - 7 8 9 1 - 7 8 9 1 - 7 8 9 s t a r t c o n d i t i o n s t o p c o n d i t i o n s d a s c l a d d r e s s d a t a d a t a r / w a c k a c k a c k c o m p l e t e d a t a t r a n s f e r e l e c t r i c a l c h a r a c t e r i s t i c s c o n t . l i n e a r i t y ( a l l v o l t a g e s a r e w i t h r e s p e c t t o g n d ; t a m b = 2 5 o c ; v d d = 1 2 v u n l e s s o t h e r w i s e s p e c i f i e d ) p a r a m e t e r s y m b o l c o n d i t i o n s m i n t y p m a x u n i t d i f f e r e n t i a l n o n l i n e a r i t y d n l i o = - 2 m a ; v m a x = v d d - 0 . 5 0 . 1 0 . 5 l s b i n t e g r a l n o n l i n e a r i t y i n l i o = - 2 m a ; v m a x = v d d - 0 . 5 0 . 1 0 . 5 l s b f u n c t i o n s _ i 2 c - b u s t h e m a s 8 4 4 4 a i 2 c - b u s i n t e r f a c e i s a r e c e i v e r - o n l y s l a v e . d a t a i s a c c e p t e d f r o m t h e i 2 c - b u s i n t h e f o l l o w i n g f o r m a t . s 0 1 0 0 a 2 a 1 a 0 0 a i 3 i 2 i 1 i 0 s d s c s b s a a d 7 d 6 d 5 d 4 d 3 d 2 d 1 d 0 a p a d d r e s s b y t e i n s t r u c t i o n b y t e f i r s t d a t a b y t e s s t a r t c o n d i t i o n a 2 , a 1 , a 0 p r o g r a m m a b l e a d d r e s s b i t s p s t o p c o n d i t i o n i 3 , i 2 , i 1 , i 0 i n s t r u c t i o n b i t s a a c k n o w l e d g e m e n t s d , s c , s b , s a s u b - a d d r e s s b i t s d 7 , d 6 , d 5 , d 4 , d 3 , d 2 , d 2 , d 1 , d 0 d a t a b i t s ` i 2 c - b u s t i m i n g
d a 8 4 4 4 a . 0 0 5 m a y 3 1 , 1 9 9 6 6 f u n c t i o n s a a d d r e s s b y t e v a l i d a d d r e s s e s a r e 4 0 , 4 2 , 4 4 , 4 6 , 4 8 , 4 a , 4 c , 4 e ( h e x ) , d e p e n d i n g o n t h e p r o g r a m m i n g o f b i t s a 2 , a 1 a n d a 0 . w i t h t h e s e a d d r e s s e s , u p t o e i g h t m a s 8 4 4 4 a i c s c a n b e o p e r a t e d i n d e p e n d e n t l y f r o m o n e i 2 c - b u s . n o o t h e r a d d r e s s e s a r e a c k n o w l e d g e d b y t h e m a s 8 4 4 4 a . t h e a d d r e s s i n p u t s a 0 , a 1 a n d a 2 a r e p r o g r a m m e d b y c o n n e c t i o n t o g n d f o r a n = 0 o r t o v d d f o r a n = 1 . i f t h e i n p u t s a r e l e f t f l o a t i n g , a n = 1 w i l l r e s u l t . f o r m a s 8 4 4 4 a s , a 2 i s a l w a y s 1 . b i n s t r u c t i o n a n d d a t a b y t e s v a l i d i n s t r u c t i o n s f r o m 0 0 t o 0 f a n d f 0 t o f f ( h e x ) ; m a s 8 4 4 4 a w i l l n o t r e s p o n d t o o t h e r i n s t r u c t i o n v a l u e , b u t w i l l s t i l l g e n e r a t e a n a c k n o w l e d g e m e n t . i n s t r u c t i o n s 0 0 t o 0 f c a u s e a u t o - i n c r e m e n t i n g o f t h e s u b - a d d r e s s ( b i t s s d t o s a ) w h e n m o r e t h a n o n e d a t a b y t e i s s e n t w i t h i n o n e t r a n s m i s s i o n . w i t h a u t o - i n c r e m e n t i n g , t h e f i r s t d a t a b y t e i s w r i t t e n i n t o t h e d a c a d d e s s e d b y b i t s s d t o s a a n d t h e n t h e s u b - a d d r e s s i s a u t o m a t i c a l l y i n c r e m e n t e d b y o n e p o s i t i o n f o r t h e n e x t d a t a b y t e i n t h e s e r i e s . a u t o - i n c r e m e n t i n g d o e s n o t o c c u r w i t h i n s t r u c t i o n s f 0 t o f f . v a l i d s u b - a d d r e s s e s ( b i t s s d t o s a ) a r e 0 t o 7 ( h e x ) r e l a t i n g n u m e r i c a l l y t o d a c 0 t o d a c 7 . w h e n t h e a u t o - i n c r e m e n t i n g f u n c t i o n i s u s e d , t h e s u b - a d d r e s s w i l l s e q u e n c e t h r o u g h a l l p o s s i b l e v a l u e s ( 0 t o f , 0 t o f , e t c . ) . w h i l e t h e s u b - a d d r e s s i s b e t w e e n 8 a n d f n o d a c o u t p u t s c h a n g e . c i 2 c - b u s i n p u t s c l ( p i n 4 ) a n d i n p u t / o u t p u t s d a ( p i n 3 ) c o n f o r m t o i 2 c - b u s s p e c i f i c a t i o n s . p i n s 3 a n d 4 a r e p r o t e c t e d a g a i n s t v o l t a g e p u l s e s b y i n t e r n a l z e n e r d i o d e s c o n n e c t e d t o t h e g r o u n d p l a n e a n d t h e r e f o r e t h e n o r m a l b u s l i n e v o l t a g e s h a l l n o t e x c e e d 5 . 5 v . d i n p u t v m a x i n p u t v m a x ( p i n 2 ) p r o v i d e s a m e a n s o f c o m p r i s i n g t h e o u t p u t v o l t a g e s w i n g o f t h e d a c s . t h e m a x i m u m d a c o u t p u t v o l t a g e i s r e s t r i c t e d t o a p p r o x i m a t e l y v m a x + v d a c m i n w h i l e t h e 6 - b i t r e s o l u t i o n i s m a i n t a i n e d , t h e r e f o r e g i v i n g a f i n e r v o l t a g e r e s o l u t i o n o f s m a l l e r o u t p u t s w i n g s .
d a 8 4 4 4 a . 0 0 5 m a y 3 1 , 1 9 9 6 7 c l o c k d a t a + 1 2 v + 1 2 v 1 0 0 n f 1 0 0 n f + 5 v 5 k 5 k m a s 8 4 4 4 a d a c 7 d a c 0 d a c 1 d a c 2 d a c 3 d a c 4 d a c 5 d a c 6 1 6 1 5 1 4 1 3 1 2 1 1 1 0 9 v d d g n d a 2 a 1 s c l s d a a 0 7 6 5 4 3 m i c r o c o n t r o l l e r a p p l i c a t i o n i n f o r m a t i o n
d a 8 4 4 4 a . 0 0 5 m a y 3 1 , 1 9 9 6 8 1 . 1 2 0 . 1 0 2 . 3 6 0 . 3 0 2 . 6 4 p l a n e s e a t i n g 5 t y p . 1 0 . 4 9 1 0 . 1 1 1 0 . 6 4 p i n 1 1 0 . 0 1 7 . 5 9 7 . 3 9 1 . 2 7 t y p . 0 . 3 6 0 . 4 8 0 . 9 4 5 t y p 0 . 3 3 x 4 5 0 . 8 6 t y p . 1 6 l e a d s o o u t l i n e ( 3 0 0 m i l b o d y ) a l l m e a s u r e m e n t s i n m m 0 - 0 . 1 3 r a d . 5 t y p . 5 t y p . 5 t y p . 0 . 2 5 r a d . m i n . 1 p i n 1 8 . 9 3 2 1 . 3 3 6 . 1 0 7 . 1 1 7 . 6 2 b s c 5 - 7 5 . 5 2 . 9 3 5 . 3 3 4 . 9 5 m a x 0 . 2 5 4 b s c 2 . 5 4 0 . 3 6 0 . 5 6 1 . 7 7 1 . 1 5 p l a n e s e a t i n g 0 . 6 3 t y p i c a l 1 . 5 2 1 6 l e a d p d i p o u t l i n e ( 3 0 0 m i l b o d y ) a l l m e a s u r e m e n t s i n m m p a c k a g e o u t l i n e s
da8444a.005 may 31, 1996 9 b u s 2 purchase of i 2 c components of micro analog systems oy, kamreerintie 2, fin-02770 espoo, finland, conveys a license under the philips i 2 c patent rights to use these components in an i 2 c system, provided that the system conforms to the i 2 c standard specification as defined by philips. notice ordering information product code product package comments MAS8444An octal 6-bit trimmer-ic 16 pin pdip 0.3" MAS8444As octal 6-bit trimmer-ic 16 pin so 0.3" local distributor micro analog systems oy contacts micro analog systems oy kamreerintie 2, p.o.box 51 fin-02771 espoo, finland tel. (09) 80 521 tel. int. +358 9 80 521 telefax +358 9 805 3213 e- m a il : i n fo @ m a s - o y . c o m notice micro analog systems oy reserves the right to make changes to the products contained in this data sheet in order to improve the design or performance and to supply the best possible products. micro analog systems oy assumes no responsibility for the use of any circuits shown in this data sheet, conveys no license under any patent or other rights unless otherwise specified in this data sheet, and makes no claim that circuits are free from patent infringement. applications for any devices shown in this data sheet are for illustration only and micro analog systems oy makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification.
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