View ADCMP341_7680178.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

d u a l 0 . 2 7 5 % c o m p a r a t o r s a n d r e f e r e n c e w i t h p r o g r a m m a b l e h y s t e r e s i s d a t a s h e e t a d c m p 3 4 1 / a d c m p 3 4 3 r e v . a d o c u m e n t f e e d b a c k i n f o r m a t i o n f u r n i s h e d b y a n a l o g d e v i c e s i s b e l i e v e d t o b e a c c u r a t e a n d r e l i a b l e . h o w e v e r , n o r e s p o n s i b i l i t y i s a s s u m e d b y a n a l o g d e v i c e s f o r i t s u s e , n o r f o r a n y i n f r i n g e m e n t s o f p a t e n t s o r o t h e r r i g h t s o f t h i r d p a r t i e s t h a t m a y r e s u l t f r o m i t s u s e . s p e c i f i c a t i o n s s u b j e c t t o c h a n g e w i t h o u t n o t i c e . n o l i c e n s e i s g r a n t e d b y i m p l i c a t i o n o r o t h e r w i s e u n d e r a n y p a t e n t o r p a t e n t r i g h t s o f a n a l o g d e v i c e s . t r a d e m a r k s a n d r e g i s t e r e d t r a d e m a r k s a r e t h e p r o p e r t y o f t h e i r r e s p e c t i v e o w n e r s . o n e t e c h n o l o g y w a y , p . o . b o x 9 1 0 6 , n o r w o o d , m a 0 2 0 6 2 - 9 1 0 6 , u . s . a . t e l : 7 8 1 . 3 2 9 . 4 7 0 0 ? 2 0 0 7 ? 2 0 1 3 a n a l o g d e v i c e s , i n c . a l l r i g h t s r e s e r v e d . t e c h n i c a l s u p p o r t w w w . a n a l o g . c o m f e a t u r e s 4 0 0 m v 0 . 2 7 5 % t h r e s h o l d u s e r p r o g r a m m a b l e h y s t e r e s i s v i a r e s i s t o r s t r i n g s u p p l y r a n g e : 1 . 7 v t o 5 . 5 v l o w q u i e s c e n t c u r r e n t : 6 . 5 a t y p i c a l i n p u t r a n g e i n c l u d e s g r o u n d l o w i n p u t b i a s c u r r e n t : 5 n a m a x i m u m o p e n - d r a i n o u t p u t s s u p p o r t s w i r e d - a n d c o n n e c t i o n s i n p u t p o l a r i t i e s : a d c m p 3 4 1 n o n i n v e r t i n g a d c m p 3 4 3 i n v e r t i n g s m a l l s o t - 2 3 p a c k a g e a p p l i c a t i o n s p o r t a b l e a p p l i c a t i o n s l i - i o n m o n i t o r i n g h a n d h e l d i n s t r u m e n t s l e d / r e l a y d r i v i n g o p t o i s o l a t o r d r i v i n g c o n t r o l s y s t e m s g e n e r a l d e s c r i p t i o n t h e a d c m p 3 4 1 / a d c m p 3 4 3 c o n s i s t o f t w o l o w p o w e r , h i g h a c c u r a c y c o m p a r a t o r s w i t h a 4 0 0 m v r e f e r e n c e i n a n 8 - l e a d s o t - 2 3 p a c k a g e . o p e r a t i n g w i t h i n a s u p p l y r a n g e o f 1 . 7 v t o 5 . 5 v , t h e d e v i c e s o n l y d r a w 6 . 5 a ( t y p i c a l ) , m a k i n g t h e m i d e a l f o r l o w v o l t a g e s y s t e m m o n i t o r i n g a n d p o r t a b l e a p p l i c a t i o n s . h y s t e r e s i s i s d e t e r m i n e d u s i n g t h r e e r e s i s t o r s i n a s t r i n g c o n f i g u r a - t i o n w i t h t h e u p p e r a n d l o w e r t a p p o i n t s c o n n e c t e d t o t h e i n a _ u a n d i n a _ l p i n s o f e a c h c o m p a r a t o r , r e s p e c t i v e l y . t h e s t a t e o f t h e o u t p u t s o f t h e c o m p a r a t o r s s e l e c t s w h i c h p i n i s i n t e r n a l l y c o n n e c t e d t o t h e c o m p a r a t o r s i n p u t . t h e r e f o r e , a c h a n g e o f s t a t e i n t h e c o m p a r a t o r s o u t p u t r e s u l t s i n o n e o f t h e i n p u t s b e i n g s w i t c h e d i n t o t h e c o m p a r a t o r a n d t h e o t h e r b e i n g s w i t c h e d o u t . t h i s p r o v i d e s t h e u s e r w i t h a f u l l y f l e x i b l e a n d a c c u r a t e m e t h o d o f s e t t i n g t h e h y s t e r e s i s . o n e i n p u t o f e a c h c o m p a r a t o r i s i n t e r n a l l y c o n n e c t e d t o t h e r e f e r e n c e . t h e o t h e r i n p u t i s a v a i l a b l e e x t e r n a l l y , v i a a n i n t e r n a l m u x , t h r o u g h p i n s i n a _ u o r i n a _ l . t h e s t a t e o f t h e o u t p u t d e t e r m i n e s w h i c h o f t h e s e p i n s i s c o n n e c t e d a t a n y o n e t i m e . t h e c o m p a r a t o r o u t p u t s a r e o p e n - d r a i n w i t h t h e o u t p u t s t a g e s i n k i n g c a p a b i l i t y g u a r a n t e e d g r e a t e r t h a n 5 m a o v e r t e m p e r a t u r e . t h e a d c m p 3 4 1 h a s n o n i n v e r t i n g i n p u t s a n d t h e a d c m p 3 4 3 h a s i n v e r t i n g i n p u t s . t h e d e v i c e s a r e s u i t a b l e f o r p o r t a b l e , c o m m e r c i a l , i n d u s t r i a l , a n d a u t o m o t i v e a p p l i c a t i o n s . f u n c t i o n a l b l o c k d i a g r a m s + i n a _ u + i n b _ u o u t a m u x m u x o u t b v d d g n d 4 0 0 m v a d c m p 3 4 1 + i n a _ l + i n b _ l v i n b v i n a r 1 r 2 r 3 0 6 5 0 0 - 0 0 1 f i g u r e 1 . a d c m p 3 4 1 ? i n a _ u ? i n b _ u o u t a m u x m u x o u t b v d d g n d 4 0 0 m v a d c m p 3 4 3 ? i n a _ l ? i n b _ l v i n b v i n a 0 6 5 0 0 - 0 0 2 r 1 r 2 r 3 f i g u r e 2 . a d c m p 3 4 3 c h 1 2 . 0 0 v c h 2 5 0 0 m v 2 1 0 6 5 0 0 - 0 2 9 o u t a v i n 5 n?5 n? 5 n? m 1 0 0 m s f i g u r e 3 . h y s t e r e s i s p r o g r a m m e d t o 5 1 3 m v @ v i n o n a d c m p 3 4 1
a d c m p 3 4 1 / a d c m p 3 4 3 d a t a s h e e t r e v . a | p a g e 2 o f 1 2 t a b l e o f c o n t e n t s f e a t u r e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 a p p l i c a t i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 g e n e r a l d e s c r i p t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 f u n c t i o n a l b l o c k d i a g r a m s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 r e v i s i o n h i s t o r y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 s p e c i f i c a t i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 a b s o l u t e m a x i m u m r a t i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 t h e r m a l c h a r a c t e r i s t i c s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 e s d c a u t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 p i n c o n f i g u r a t i o n s a n d f u n c t i o n d e s c r i p t i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 t y p i c a l p e r f o r m a n c e c h a r a c t e r i s t i c s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 a p p l i c a t i o n i n f o r m a t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 c o m p a r a t o r s a n d i n t e r n a l r e f e r e n c e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 p o w e r s u p p l y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 i n p u t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 o u t p u t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 p r o g r a m m i n g h y s t e r e s i s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 l a y o u t r e c o m m e n d a t i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 o u t l i n e d i m e n s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 o r d e r i n g g u i d e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 r e v i s i o n h i s t o r y 8 / 1 3 ? r e v . 0 t o r e v . a c h a n g e s t o f i g u r e 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 u p d a t e d o u t l i n e d i m e n s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 2 / 0 7 ? r e v i s i o n 0 : i n i t i a l v e r s i o n
d a t a s h e e t a d c m p 3 4 1 / a d c m p 3 4 3 r e v . a | p a g e 3 o f 1 2 s p e c i f i c a t i o n s v d d = 1 . 7 v t o 5 . 5 v , 4 0 c t a + 1 2 5 c , u n l e s s o t h e r w i s e n o t e d . t a b l e 1 . p a r a m e t e r m i n t y p m a x u n i t t e s t c o n d i t i o n s / c o m m e n t s t h r e s h o l d 1 t h r e s h o l d v o l t a g e 3 9 6 . 6 4 0 0 . 4 4 0 4 . 3 m v v d d = 1 . 7 v , t a = 2 5 c 3 9 9 . 3 4 0 0 . 4 4 0 1 . 5 m v v d d = 3 . 3 v , t a = 2 5 c 3 9 8 . 5 4 0 0 . 4 4 0 2 . 2 m v v d d = 5 . 5 v , t a = 2 5 c 3 9 5 . 0 4 0 0 . 4 4 0 5 . 8 m v v d d = 1 . 7 v , 0 c t a 7 0 c 3 9 7 . 4 4 0 0 . 4 4 0 3 . 4 m v v d d = 3 . 3 v , 0 c t a 7 0 c 3 9 6 . 9 4 0 0 . 4 4 0 3 . 7 m v v d d = 5 . 5 v , 0 c t a 7 0 c 3 9 1 . 2 4 0 0 . 4 4 0 7 . 7 m v v d d = 1 . 7 v , 4 0 c t a + 1 2 5 c 3 9 3 . 4 4 0 0 . 4 4 0 5 . 6 m v v d d = 3 . 3 v , 4 0 c t a + 1 2 5 c 3 9 3 . 2 4 0 0 . 4 4 0 5 . 8 m v v d d = 5 . 5 v , 4 0 c t a + 1 2 5 c t h r e s h o l d v o l t a g e a c c u r a c y 0 . 2 7 5 % t a = 2 5 c , v d d = 3 . 3 v t h r e s h o l d v o l t a g e t e m p e r a t u r e c o e f f i c i e n t 1 6 p p m / c p o w e r s u p p l y s u p p l y c u r r e n t 6 . 5 9 a v d d = 1 . 7 v 7 . 0 1 0 a v d d = 5 . 5 v i n p u t c h a r a c t e r i s t i c s i n p u t b i a s c u r r e n t 0 . 0 1 5 n a v d d = 1 . 7 v , v i n = v d d 0 . 0 1 5 n a v d d = 1 . 7 v , v i n = 0 . 1 v o p e n - d r a i n o u t p u t s o u t p u t l o w v o l t a g e 2 1 4 0 2 2 0 m v v d d = 1 . 7 v , i o u t = 3 m a 1 4 0 2 2 0 m v v d d = 5 . 5 v , i o u t = 5 m a o u t p u t l e a k a g e c u r r e n t 3 0 . 0 1 1 a v d d = 1 . 7 v , v o u t = v d d 0 . 0 1 1 a v d d = 1 . 7 v , v o u t = 5 . 5 v d y n a m i c p e r f o r m a n c e 2 , 4 h i g h - t o - l o w p r o p a g a t i o n d e l a y 1 0 s v d d = 5 v , v o l = 4 0 0 m v l o w - t o - h i g h p r o p a g a t i o n d e l a y 8 s v d d = 5 v , v o h = 0 . 9 v d d o u t p u t r i s e t i m e 0 . 5 s v d d = 5 v , v o = ( 0 . 1 t o 0 . 9 ) v d d o u t p u t f a l l t i m e 0 . 0 7 s v d d = 5 v , v o = ( 0 . 1 t o 0 . 9 ) v d d 1 r l = 1 0 0 k , v o = 2 v s w i n g . 2 1 0 m v i n p u t o v e r d r i v e . 3 v i n = 4 0 m v o v e r d r i v e . 4 r l = 1 0 k .
a d c m p 3 4 1 / a d c m p 3 4 3 d a t a s h e e t r e v . a | p a g e 4 o f 1 2 a b s o l u t e m a x i m u m r a t i n g s t a b l e 2 . p a r a m e t e r r a t i n g v d d ? 0 . 3 v t o + 6 v i n a _ u , i n a _ l , i n b _ u , i n b _ l ? 0 . 3 v t o + 6 v o u t a , o u t b ? 0 . 3 v t o + 6 v o p e r a t i n g t e m p e r a t u r e r a n g e ? 4 0 c t o + 1 2 5 c s t o r a g e t e m p e r a t u r e r a n g e ? 6 5 c t o + 1 5 0 c l e a d t e m p e r a t u r e s o l d e r i n g ( 1 0 s e c ) 3 0 0 c v a p o r p h a s e ( 6 0 s e c ) 2 1 5 c i n f r a r e d ( 1 5 s e c ) 2 2 0 c s t r e s s e s a b o v e t h o s e l i s t e d u n d e r a b s o l u t e m a x i m u m r a t i n g s m a y c a u s e p e r m a n e n t d a m a g e t o t h e d e v i c e . t h i s i s a s t r e s s r a t i n g o n l y ; f u n c t i o n a l o p e r a t i o n o f t h e d e v i c e a t t h e s e o r a n y o t h e r c o n d i t i o n s a b o v e t h o s e i n d i c a t e d i n t h e o p e r a t i o n a l s e c t i o n o f t h i s s p e c i f i c a t i o n i s n o t i m p l i e d . e x p o s u r e t o a b s o l u t e m a x i m u m r a t i n g c o n d i t i o n s f o r e x t e n d e d p e r i o d s m a y a f f e c t d e v i c e r e l i a b i l i t y . t h e r m a l c h a r a c t e r i s t i c s j a i s s p e c i f i e d f o r t h e w o r s t - c a s e c o n d i t i o n s , t h a t i s , a d e v i c e s o l d e r e d i n a c i r c u i t b o a r d f o r s u r f a c e - m o u n t p a c k a g e s . t a b l e 3 . t h e r m a l r e s i s t a n c e p a c k a g e t y p e j a u n i t 8 - l e a d s o t - 2 3 2 1 1 . 5 c / w e s d c a u t i o n
d a t a s h e e t a d c m p 3 4 1 / a d c m p 3 4 3 r e v . a | p a g e 5 o f 1 2 p i n c o n f i g u r a t i o n s a n d f u n c t i o n d e s c r i p t i o n s 1 o u t a 8 o u t b 2 + i n a _ u 7 v d d 3 + i n a _ l 6 + i n b _ u 4 g n d 5 + i n b _ l a d c m p 3 4 1 t o p v i e w ( n o t t o s c a l e ) 0 6 5 0 0 - 0 0 3 f i g u r e 4 . a d c m p 3 4 1 p i n c o n f i g u r a t i o n 1 o u t a 8 o u t b 2 ? i n a _ u 7 v d d 3 ? i n a _ l 6 ? i n b _ u 4 g n d 5 ? i n b _ l a d c m p 3 4 3 t o p v i e w ( n o t t o s c a l e ) 0 6 5 0 0 - 0 0 4 f i g u r e 5 . a d c m p 3 4 3 p i n c o n f i g u r a t i o n t a b l e 4 . p i n f u n c t i o n d e s c r i p t i o n s p i n n o . m n e m o n i c d e s c r i p t i o n 1 o u t a o p e n - d r a i n o u t p u t f o r c o m p a r a t o r a . 2 i n a _ u m o n i t o r s a n a l o g i n p u t v o l t a g e o n c o m p a r a t o r a . c o n n e c t t o t h e u p p e r t a p p o i n t o f t h e r e s i s t o r s t r i n g . c o n n e c t i n t e r n a l l y t o t h e n o n i n v e r t i n g i n p u t o n t h e a d c m p 3 4 1 o r t h e i n v e r t i n g p i n o n t h e a d c m p 3 4 3 v i a a m u x c o n t r o l l e d b y t h e o u t p u t l e v e l o n c o m p a r a t o r a . t h e o t h e r i n p u t o f c o m p a r a t o r a i s c o n n e c t e d t o a 4 0 0 m v r e f e r e n c e . 3 i n a _ l m o n i t o r s a n a l o g i n p u t v o l t a g e o n c o m p a r a t o r a . c o n n e c t t o t h e l o w e r t a p p o i n t o f t h e r e s i s t o r s t r i n g . c o n n e c t i n t e r n a l l y t o t h e n o n i n v e r t i n g i n p u t o n t h e a d c m p 3 4 1 o r t h e i n v e r t i n g p i n o n t h e a d c m p 3 4 3 v i a a m u x c o n t r o l l e d b y t h e o u t p u t l e v e l o n c o m p a r a t o r a . t h e o t h e r i n p u t o f c o m p a r a t o r a i s c o n n e c t e d t o a 4 0 0 m v r e f e r e n c e . 4 g n d g r o u n d . 5 i n b _ l m o n i t o r s a n a l o g i n p u t v o l t a g e o n c o m p a r a t o r b . c o n n e c t t o t h e l o w e r t a p p o i n t o f t h e r e s i s t o r s t r i n g . c o n n e c t i n t e r n a l l y t o t h e n o n i n v e r t i n g i n p u t o n t h e a d c m p 3 4 1 o r t h e i n v e r t i n g p i n o n t h e a d c m p 3 4 3 v i a a m u x c o n t r o l l e d b y t h e o u t p u t l e v e l o n c o m p a r a t o r b . t h e o t h e r i n p u t o f c o m p a r a t o r b i s c o n n e c t e d t o a 4 0 0 m v r e f e r e n c e . 6 i n b _ u m o n i t o r s a n a l o g i n p u t v o l t a g e o n c o m p a r a t o r b . c o n n e c t t o t h e u p p e r t a p p o i n t o f t h e r e s i s t o r s t r i n g . c o n n e c t i n t e r n a l l y t o t h e n o n i n v e r t i n g i n p u t o n t h e a d c m p 3 4 1 o r t h e i n v e r t i n g p i n o n t h e a d c m p 3 4 3 v i a a m u x c o n t r o l l e d b y t h e o u t p u t l e v e l o n c o m p a r a t o r b . t h e o t h e r i n p u t o f c o m p a r a t o r b i s c o n n e c t e d t o a 4 0 0 m v r e f e r e n c e . 7 v d d p o w e r s u p p l y p i n . 8 o u t b o p e n - d r a i n o u t p u t f o r c o m p a r a t o r b .
a d c m p 3 4 1 / a d c m p 3 4 3 d a t a s h e e t r e v . a | p a g e 6 o f 1 2 t y p i c a l p e r f o r m a n c e c h a r a c t e r i s t i c s 0 1 0 2 0 3 0 4 0 5 0 p e r c e n t o f u n i t s ( % ) r i s i n g i n p u t t h r e s h o l d v o l t a g e ( m v ) 6 0 3 9 4 3 9 5 3 9 6 3 9 7 3 9 8 3 9 9 4 0 0 4 0 1 4 0 2 4 0 3 4 0 4 4 0 5 4 0 6 0 6 5 0 0 - 0 0 5 v d d = 5 v t a = 2 5 c f i g u r e 6 . d i s t r i b u t i o n o f r i s i n g i n p u t t h r e s h o l d v o l t a g e 3 9 5 r i s i n g i n p u t t h r e s h o l d v o l t a g e ( m v ) s u p p l y v o l t a g e ( v ) 4 0 1 4 0 0 3 9 9 3 9 8 3 9 7 3 9 6 1 . 7 5 . 7 5 . 2 4 . 7 4 . 2 3 . 7 3 . 2 2 . 7 2 . 2 t a = ? 4 0 c t a = + 2 5 c t a = + 8 5 c t a = + 1 2 5 c 0 6 5 0 0 - 0 0 7 f i g u r e 7 . r i s i n g i n p u t t h r e s h o l d v o l t a g e v s . s u p p l y v o l t a g e 1 0 4 5 . 2 s u p p l y c u r r e n t ( a ) s u p p l y v o l t a g e ( v ) 98 7 6 5 1 . 7 2 . 2 2 . 7 3 . 2 3 . 7 4 . 2 4 . 7 t a = + 1 2 5 c t a = + 8 5 c t a = + 2 5 c t a = ? 4 0 c 0 6 5 0 0 - 0 0 8 n o l o a d c u r r e n t f i g u r e 8 . q u i e s c e n t s u p p l y c u r r e n t v s . s u p p l y v o l t a g e 3 9 6 r i s i n g i n p u t t h r e s h o l d v o l t a g e ( m v ) t e m p e r a t u r e ( c ) 4 0 4 4 0 2 4 0 0 3 9 8 ? 4 0 ? 2 0 1 2 0 0 2 0 4 0 6 0 8 0 1 0 0 4 3 2 1 0 6 5 0 0 - 0 0 6 f o u r t y p i c a l p a r t s v d d = 5 v f i g u r e 9 . r i s i n g i n p u t t h r e s h o l d v o l t a g e v s . t e m p e r a t u r e ? 5 t h r e s h o l d s h i f t ( m v ) s u p p l y v o l t a g e ( v ) 1 1 . 5 2 . 5 2 . 4 2 . 3 2 . 2 2 . 1 2 . 0 1 . 9 1 . 8 1 . 7 1 . 6 0 6 5 0 0 - 0 0 9 t a = + 1 2 5 c t a = + 8 5 c t a = + 2 5 c t a = ? 4 0 c 0 ? 1 ? 2 ? 3 ? 4 f i g u r e 1 0 . m i n i m u m s u p p l y v o l t a g e 5 0 0 1 . 5 s u p p l y c u r r e n t ( a ) s u p p l y v o l t a g e ( v ) 4 0 3 0 2 0 1 0 0 0 . 5 1 . 0 0 6 5 0 0 - 0 1 0 t a = + 1 2 5 c t a = + 8 5 c t a = + 2 5 c t a = ? 4 0 c f i g u r e 1 1 . s t a r t - u p s u p p l y c u r r e n t
d a t a s h e e t a d c m p 3 4 1 / a d c m p 3 4 3 r e v . a | p a g e 7 o f 1 2 1 s u p p l y c u r r e n t ( a ) o u t p u t s i n k c u r r e n t ( m a ) 1 0 0 0 1 0 0 1 0 0 . 0 0 1 1 0 0 1 0 1 0 . 1 0 . 0 1 t a = ? 4 0 c v d d = 5 . 0 v v d d = 3 . 3 v v d d = 2 . 5 v v d d = 1 . 7 v 0 6 5 0 0 - 0 1 1 f i g u r e 1 2 . s u p p l y c u r r e n t v s . o u t p u t s i n k c u r r e n t 1 s u p p l y c u r r e n t ( a ) o u t p u t s i n k c u r r e n t ( m a ) 1 0 0 0 1 0 0 1 0 0 . 0 0 1 1 0 0 1 0 1 0 . 1 0 . 0 1 v d d = 5 . 0 v v d d = 3 . 3 v v d d = 2 . 5 v v d d = 1 . 7 v t a = 8 5 c 0 6 5 0 0 - 0 1 3 f i g u r e 1 3 . s u p p l y c u r r e n t v s . o u t p u t s i n k c u r r e n t ? 7 1 . 0 i n p u t b i a s c u r r e n t ( n a ) i n p u t v o l t a g e ( v ) ? 3 ? 5 0 0 . 2 0 . 6 ? 1 31 0 . 4 0 . 8 t a = + 1 2 5 c t a = + 8 5 c t a = + 2 5 c t a = ? 4 0 c 0 6 5 0 0 - 0 1 5 c u r r e n t i s p o s i t i v e g o i n g i n t o t h e d e v i c e . v d d = 5 v 0 v < v i b < 1 v f i g u r e 1 4 . l o w l e v e l i n p u t b i a s c u r r e n t 1 s u p p l y c u r r e n t ( a ) o u t p u t s i n k c u r r e n t ( m a ) 1 0 0 0 1 0 0 1 0 0 . 0 0 1 1 0 0 1 0 1 0 . 1 0 . 0 1 v d d = 5 . 0 v v d d = 3 . 3 v v d d = 2 . 5 v v d d = 1 . 7 v t a = 2 5 c 0 6 5 0 0 - 0 1 2 f i g u r e 1 5 . s u p p l y c u r r e n t v s . o u t p u t s i n k c u r r e n t 0 . 1 0 i n p u t b i a s c u r r e n t ( n a ) i n p u t v o l t a g e ( v ) 1 k 1 0 k 1 0 0 1 0 1 ? 0 . 3 ? 0 . 2 ? 0 . 1 t a = + 1 2 5 c t a = + 8 5 c t a = + 2 5 c t a = ? 4 0 c 0 6 5 0 0 - 0 1 4 c u r r e n t i s g o i n g o u t o f t h e d e v i c e . v d d = 5 v ? 0 . 3 v < v i b < 0 v f i g u r e 1 6 . b e l o w g r o u n d i n p u t b i a s c u r r e n t 0 . 0 1 5 i n p u t b i a s c u r r e n t ( n a ) i n p u t v o l t a g e ( v ) 1 0 . 1 1 2 4 1 0 3 t a = ? 4 0 c 0 6 5 0 0 - 0 1 6 t a = + 1 2 5 c t a = + 8 5 c t a = + 2 5 c c u r r e n t i s g o i n g i n t o t h e d e v i c e v d d = 5 v v i b > 1 v f i g u r e 1 7 . h i g h l e v e l i n p u t b i a s c u r r e n t
a d c m p 3 4 1 / a d c m p 3 4 3 d a t a s h e e t r e v . a | p a g e 8 o f 1 2 1 o u t p u t s a t u r a t i o n v o l t a g e ( m v ) o u t p u t s i n k c u r r e n t ( m a ) 1 0 0 1 0 0 . 0 0 1 0 . 1 0 . 0 1 1 0 0 0 1 0 1 v d d = 5 . 0 v v d d = 3 . 3 v v d d = 2 . 5 v v d d = 1 . 8 v 0 6 5 0 0 - 0 1 7 t a = 2 5 c f i g u r e 1 8 . o u t p u t s a t u r a t i o n v o l t a g e v s . o u t p u t s i n k c u r r e n t 1 o u t p u t s a t u r a t i o n v o l t a g e ( m v ) o u t p u t s i n k c u r r e n t ( m a ) 1 0 0 1 0 0 . 0 0 1 0 . 1 1 0 0 0 1 0 0 . 0 1 1 v d d = 5 . 0 v v d d = 3 . 3 v v d d = 2 . 5 v v d d = 1 . 8 v 0 6 5 0 0 - 0 1 9 t a = 8 5 c f i g u r e 1 9 . o u t p u t s a t u r a t i o n v o l t a g e v s . o u t p u t s i n k c u r r e n t 0 s h o r t - c i r c u i t c u r r e n t ( m a ) o u t p u t v o l t a g e ( v ) 4 0 2 0 0 2 7 0 4 6 0 3 0 1 0 5 0 v d d = 5 . 0 v v d d = 3 . 3 v v d d = 2 . 5 v v d d = 1 . 8 v 0 6 5 0 0 - 0 2 1 t a = 2 5 c f i g u r e 2 0 . s h o r t - c i r c u i t c u r r e n t v s . o u t p u t v o l t a g e 1 o u t p u t s a t u r a t i o n v o l t a g e ( m v ) o u t p u t s i n k c u r r e n t ( m a ) 1 0 0 1 0 0 . 0 0 1 0 . 1 1 0 0 0 1 0 0 . 0 1 1 v d d = 5 . 0 v t a = ? 4 0 c v d d = 3 . 3 v v d d = 2 . 5 v v d d = 1 . 8 v 0 6 5 0 0 - 0 1 8 f i g u r e 2 1 . o u t p u t s a t u r a t i o n v o l t a g e v s . o u t p u t s i n k c u r r e n t 0 s h o r t - c i r c u i t c u r r e n t ( m a ) o u t p u t v o l t a g e ( v ) 4 0 2 0 0 2 8 0 4 6 0 3 0 1 0 7 0 5 0 t a = + 8 5 c t a = + 2 5 c 0 6 5 0 0 - 0 2 0 t a = + 1 2 5 c t a = ? 4 0 c v d d = 5 v f i g u r e 2 2 . s h o r t - c i r c u i t c u r r e n t v s . o u t p u t v o l t a g e 0 . 0 0 1 o u t p u t l e a k a g e c u r r e n t ( n a ) o u t p u t v o l t a g e ( v ) 0 . 0 1 0 1 2 3 1 0 4 5 1 0 . 1 0 6 5 0 0 - 0 2 2 t a = + 1 2 5 c t a = + 8 5 c t a = + 2 5 c t a = ? 4 0 c v d d = 5 v f i g u r e 2 3 . o u t p u t l e a k a g e c u r r e n t v s . o u t p u t v o l t a g e
d a t a s h e e t a d c m p 3 4 1 / a d c m p 3 4 3 r e v . a | p a g e 9 o f 1 2 0 p r o p a g a t i o n d e l a y ( s ) i n p u t o v e r d r i v e ( m v ) 0 2 0 4 0 6 0 6 0 5 0 4 0 3 0 2 0 1 0 8 0 1 0 0 0 6 5 0 0 - 0 2 3 l h n o n i n v l h i n v h l n o n i n v h l i n v t a = 2 5 c f i g u r e 2 4 . p r o p a g a t i o n d e l a y v s . i n p u t o v e r d r i v e c h 1 5 0 . 0 m v c h 3 5 . 0 0 v c h 2 5 . 0 0 v m 2 0 . 0 s c h 1 7 m v 2 3 1 v i n ( + i n a , ? i n b ) n o n i n v ( o u t a ) i n v ( o u t b ) 0 6 5 0 0 - 0 2 4 f i g u r e 2 5 . n o n i n v e r t i n g a n d i n v e r t i n g c o m p a r a t o r s p r o p a g a t i o n d e l a y 0 . 0 1 r i s e a n d f a l l t i m e s ( s ) o u t p u t p u l l - u p r e s i s t o r ( k ? ) 1 0 . 1 1 1 0 0 1 0 1 0 0 . 1 1 0 0 1 0 0 0 r i s e f a l l 0 6 5 0 0 - 0 2 5 v d d = 5 v c l = 2 0 p f t a = 2 5 c f i g u r e 2 6 . r i s e a n d f a l l t i m e s v s . o u t p u t p u l l - u p r e s i s t o r c h 1 2 . 0 0 v c h 2 5 0 0 m v 2 1 0 6 5 0 0 - 0 2 6 o u t a v i n r 1 = 2 2 k ? r 2 = 2 . 2 k ? r 3 = 6 . 2 k ? m 1 0 0 m s f i g u r e 2 7 . h y s t e r e s i s p r o g r a m m e d t o ~ 5 1 3 m v a t t o p o f i n p u t s t r i n g ( h y s t e r e s i s a t a d c m p 3 4 1 p i n s 1 0 4 m v )
a d c m p 3 4 1 / a d c m p 3 4 3 d a t a s h e e t r e v . a | p a g e 1 0 o f 1 2 a p p l i c a t i o n i n f o r m a t i o n t h e a d c m p 3 4 1 / a d c m p 3 4 3 a r e d u a l , l o w p o w e r c o m p a r a t o r s w i t h a b u i l t - i n 4 0 0 m v r e f e r e n c e t h a t o p e r a t e s f r o m 1 . 7 v t o 5 . 5 v . t h e c o m p a r a t o r s a r e 0 . 2 7 5 % a c c u r a t e w i t h f u l l y p r o g r a m m a b l e h y s t e r e s i s , i m p l e m e n t e d u s i n g a n e w t e c h n i q u e o f a t h r e e - r e s i s t o r s t r i n g o n t h e i n p u t . t h e s e o p e n - d r a i n o u t p u t s a r e c a p a b l e o f s i n k i n g u p t o 4 0 m a . c o m p a r a t o r s a n d i n t e r n a l r e f e r e n c e e a c h o f t h e c o m p a r a t o r s h a s o n e i n p u t a v a i l a b l e e x t e r n a l l y ; t h e o t h e r c o m p a r a t o r i n p u t s a r e c o n n e c t e d i n t e r n a l l y t o t h e 4 0 0 m v r e f e r e n c e . t h e a d c m p 3 4 1 h a s t w o n o n i n v e r t i n g c o m p a r a t o r s a n d t h e a d c m p 3 4 3 h a s t w o i n v e r t i n g c o m p a r a t o r s . t h e r e a r e t w o i n p u t p i n s a v a i l a b l e t o e a c h c o m p a r a t o r . h o w e v e r , t h e s e t w o i n p u t p i n s ( i n x _ u , i n x _ l ) c o n n e c t t o t h e s a m e i n p u t l e g o f t h e c o m p a r a t o r v i a a m u x i n g s y s t e m . t h i s i s t o p r o v i d e f u l l y p r o g r a m m a b l e r i s i n g a n d f a l l i n g t r i p p o i n t s . t h e o u t p u t o f t h e c o m p a r a t o r d e t e r m i n e s w h i c h p i n i s c o n n e c t e d t o t h e i n p u t o f t h e s a m e c o m p a r a t o r . u s i n g f i g u r e 2 8 a s a n e x a m p l e , w h e n o u t a i s h i g h , + i n a _ u i s c o n n e c t e d t o t h e c o m p a r a t o r i n p u t . w h e n t h e i n p u t v o l t a g e d r o p s a n d p a s s e s b e l o w t h e 4 0 0 m v r e f e r e n c e , t h e o u t p u t g o e s l o w . t h i s i n t u r n d i s c o n n e c t s + i n a _ u f r o m t h e c o m p a r a t o r a n d c o n n e c t s + i n a _ l . t h i s l e g o f t h e s t r i n g i s a t a l o w e r v o l t a g e a n d t h u s i n s t a n t a n e o u s l y t h e e f f e c t o f h y s t e r e s i s i s a p p l i e d . t h e r e f o r e , u s i n g a r e s i s t o r s t r i n g o n t h e i n p u t a s s h o w n i n f i g u r e 2 8 , t h e v o l t a g e s f o r t h e r i s i n g a n d f a l l i n g t r i p p o i n t s c a n b e p r o g r a m m e d b y s e l e c t i n g t h e a p p r o p r i a t e r e s i s t o r s i n t h e s t r i n g . p o w e r s u p p l y t h e a d c m p 3 4 1 / a d c m p 3 4 3 a r e d e s i g n e d t o o p e r a t e f r o m 1 . 7 v t o 5 . 5 v . a 0 . 1 f d e c o u p l i n g c a p a c i t o r i s r e c o m m e n d e d b e t w e e n v d d a n d g n d . i n p u t s t h e c o m p a r a t o r i n p u t s a r e l i m i t e d t o t h e m a x i m u m v d d v o l t a g e r a n g e . t h e v o l t a g e o n t h e s e i n p u t s c a n b e a b o v e v d d b u t n e v e r a b o v e t h e m a x i m u m a l l o w e d v d d v o l t a g e . o u t p u t s t h e o p e n - d r a i n c o m p a r a t o r o u t p u t s a r e l i m i t e d t o t h e m a x i m u m s p e c i f i e d v d d v o l t a g e r a n g e , r e g a r d l e s s o f t h e v d d v o l t a g e . t h e s e o u t p u t s a r e c a p a b l e o f s i n k i n g u p t o 4 0 m a . o u t p u t s c a n b e t i e d t o g e t h e r t o p r o v i d e a c o m m o n o u t p u t s i g n a l . p r o g r a m m i n g h y s t e r e s i s w h e n c h o o s i n g t h e r e s i s t o r v a l u e s , t h e i n p u t b i a s c u r r e n t m u s t b e c o n s i d e r e d a s a p o t e n t i a l s o u r c e o f e r r o r . b e g i n b y c h o o s i n g a r e s i s t o r v a l u e f o r r 3 , w h i c h t a k e s i n t o a c c o u n t t h e a c c e p t a b l e e r r o r i n t r o d u c e d b y t h e m a x i m u m s p e c i f i e d i n p u t b i a s c u r r e n t . t o r e d u c e t h i s e r r o r , t h e c u r r e n t f l o w i n g t h r o u g h t h e r e s i s t o r r 3 s h o u l d b e c o n s i d e r a b l y g r e a t e r t h a n t h e i n p u t b i a s c u r r e n t . b i a s r 3 i i !! r 3 i s t h e r e f o r e 3 3 r r e f i v r n o w r 2 c a n b e c a l c u l a t e d f r o m t h e f o l l o w i n g : f a l l i n g f a l l i n g r i s i n g v v v r r 3 2 r 1 c a n t h e n b e c a l c u l a t e d u s i n g t h e f o l l o w i n g e q u a t i o n : 2 1 3 1 r v v r r r e f r i s i n g ? ?1 ? ? ?1 ? u w h e r e : v r e f i s t h e s p e c i f i e d o n c h i p r e f e r e n c e . i b i a s i s t h e m a x i m u m s p e c i f i e d i n p u t b i a s c u r r e n t . r 1 , r 2 , a n d r 3 a r e t h e t h r e e r e s i s t o r s a s s h o w n i n f i g u r e 2 8 . i r 3 i s t h e c u r r e n t f l o w i n g t h r o u g h r 3 . v f a l l i n g i s t h e d e s i r e d f a l l i n g t r i p v o l t a g e a n d l o w e r o f t h e t w o . v r i s i n g i s t h e d e s i r e d r i s i n g t r i p v o l t a g e a n d h i g h e r o f t h e t w o . + i n a _ u o u t a m u x v d d 4 0 0 m v a d c m p 3 4 1 + i n a _ l v i n a r 1 r 2 r 3 0 6 5 0 0 - 0 2 7 f i g u r e 2 8 . p r o g r a m m i n g h y s t e r e s i s e x a m p l e l a y o u t r e c o m m e n d a t i o n s c o r r e c t l a y o u t i s v e r y i m p o r t a n t t o i n c r e a s e n o i s e i m m u n i t y . l o n g t r a c k s f r o m t h e i n p u t r e s i s t o r s t o t h e d e v i c e c a n l e a d t o n o i s e b e i n g c o u p l e d o n t o t h e i n p u t s . t o a v o i d t h i s , i t i s b e s t t o p l a c e t h e i n p u t r e s i s t o r s a s c l o s e a s p o s s i b l e t o t h e d e v i c e . i t i s a l s o r e c o m m e n d e d t h a t a g n d p l a n e i s u s e d u n d e r t h i s l a y o u t . t h e c o m b i n a t i o n o f s m a l l h y s t e r e s i s a n d t h e u s e o f a l a r g e r 3 r e s i s t o r f u r t h e r i n c r e a s e s s u s c e p t i b i l i t y t o n o i s e . i n t h i s c a s e , a d e c o u p l i n g c a p a c i t o r ( c a , c b ) m a y b e r e q u i r e d o n t h e i n x _ u n o d e t o h e l p r e d u c e a n y n o i s e . a r e c o m m e n d e d l a y o u t e x a m p l e c a n b e s e e n i n f i g u r e 2 9 . c 1 c a c b u 1 g n d v d d o u t a i n a r 1 a r 2 a r 3 a o u t b i n b r 1 b r 2 b r 3 b 0 6 5 0 0 - 0 2 8 f i g u r e 2 9 . r e c o m m e n d e d l a y o u t e x a m p l e
d a t a s h e e t a d c m p 3 4 1 / a d c m p 3 4 3 r e v . a | p a g e 1 1 o f 1 2 o u t l i n e d i m e n s i o n s c o m p l i a n t t o j e d e c s t a n d a r d s m o - 1 7 8 - b a 8 4 0 s e a t i n g p l a n e 1 . 9 5 b s c 0 . 6 5 b s c 0 . 6 0 b s c 7 6 1 2 3 4 5 3 . 0 0 2 . 9 0 2 . 8 0 3 . 0 0 2 . 8 0 2 . 6 0 1 . 7 0 1 . 6 0 1 . 5 0 1 . 3 0 1 . 1 5 0 . 9 0 0 . 1 5 m a x 0 . 0 5 m i n 1 . 4 5 m a x 0 . 9 5 m i n 0 . 2 2 m a x 0 . 0 8 m i n 0 . 3 8 m a x 0 . 2 2 m i n 0 . 6 0 0 . 4 5 0 . 3 0 p i n 1 i n d i c a t o r 8 1 2 - 1 6 - 2 0 0 8 - a f i g u r e 3 0 . 8 - l e a d s m a l l o u t l i n e t r a n s i s t o r p a c k a g e [ s o t - 2 3 ] ( r j - 8 ) d i m e n s i o n s s h o w n i n m i l l i m e t e r s o r d e r i n g g u i d e m o d e l 1 t e m p e r a t u r e r a n g e p a c k a g e d e s c r i p t i o n p a c k a g e o p t i o n b r a n d i n g a d c m p 3 4 1 y r j z - r e e l 7 ? 4 0 c t o + 1 2 5 c 8 - l e a d s o t - 2 3 r j - 8 m 8 y a d c m p 3 4 3 y r j z - r e e l 7 ? 4 0 c t o + 1 2 5 c 8 - l e a d s o t - 2 3 r j - 8 m 9 1 1 z = r o h s c o m p l i a n t p a r t .
a d c m p 3 4 1 / a d c m p 3 4 3 d a t a s h e e t r e v . a | p a g e 1 2 o f 1 2 n o t e s ? 2 0 0 7 ? 2 0 1 3 a n a l o g d e v i c e s , i n c . a l l r i g h t s r e s e r v e d . t r a d e m a r k s a n d r e g i s t e r e d t r a d e m a r k s a r e t h e p r o p e r t y o f t h e i r r e s p e c t i v e o w n e r s . d 0 6 5 0 0 - 0 - 8 / 1 3 ( a )

▲Up To Search▲

Price & Availability of ADCMP341

	To Download ADCMP341 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .