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k e y f e a t u r e s g e n e r a l d e s c r i p t i o n 2 . 5 w o u t p u t a t 1 0 % t h d w i t h a 4 l o a d t h e p a m 8 3 0 2 a i s a 2 . 5 w c l a s s - d m o n o a u d i o a n d 5 v p o w e r s u p p l y a m p l i f i e r. i t s l o w t h d + n f e a t u r e o f f e r s h i g h - f i l t e r l e s s , l o w q u i e s c e n t c u r r e n t a n d l o w q u a l i t y s o u n d r e p r o d u c t i o n . t h e n e w f i l t e r l e s s e m i a r c h i t e c t u r e a l l o w s t h e d e v i c e t o d r i v e s p e a k e r h i g h e f f i c i e n c y u p t o 8 8 % d i r e c t l y i n s t e a d o f u s i n g l o w - p a s s o u t p u t f i l t e r s , s u p e r i o r l o w n o i s e t h e r e f o r e s a v e s y s t e m c o s t a n d p c b a r e a . s h o r t c i r c u i t p r o t e c t i o n w i t h t h e s a m e n u m b e r o f e x t e r n a l c o m p o n e n t s , t h e r m a l s h u t d o w n t h e e f f i c i e n c y o f t h e p a m 8 3 0 2 a i s m u c h b e t t e r f e w e x t e r n a l c o m p o n e n t s t o s a v e s p a c e t h a n t h a t o f c l a s s - a b c o u s i n s . i t c a n o p t i m i z e a n d c o s t b a t t e r y l i f e t h u s i s i d e a l f o r p o r t a b l e a p p l i c a t i o n s . m s o p - 8 , s o p - 8 , d f n 3 x 3 a n d d f n 2 x 2 p a c k a g e s a v a i l a b l e t h e p a m 8 3 0 2 a i s a v a i l a b l e i n m s o p - 8 , s o p - 8 , d f n 3 x 3 a n d d f n 2 x 2 p a c k a g e s . a p p l i c a t i o n s n p m p / m p 4 n g p s n p o r t a b l e s p e a k e r s n w a l k i e t a l k i e n h a n d s f r e e p h o n e s / s p e a k e r p h o n e s n c e l l u l a r p h o n e s n nn nn n n nn p b - f r e e p a c k a g e 1 w w w . p o w e r a n a l o g . c o m 0 9 / 2 0 1 1 r e v 1 . 5 t y p i c a l a p p l i c a t i o n p o w e r a n a l o g m i c r o e l e c t r o n i c s , i n c p a m 8 3 0 2 a 2 . 5 w f i l t e r l e s s c l a s s - d m o n o a u d i o a m p l i f i e r o f f o n i n + i n - v o - v o + g n d v d d / s d i n - i n + c i r c i r d i f f e r e n t i a l i n p u t p a m 8 3 0 2 a 1 f 1 3 4 6 8 5 7
b l o c k d i a g r a m 2 p i n c o n f i g u r a t i o n & m a r k i n g i n f o r m a t i o n p o w e r a n a l o g m i c r o e l e c t r o n i c s , i n c w w w . p o w e r a n a l o g . c o m p a m 8 3 0 2 a 2 . 5 w f i l t e r l e s s c l a s s - d m o n o a u d i o a m p l i f i e r 1 2 3 4 5 6 7 8 t o p v i e w m s o p - 8 / s o p - 8 p 8 3 0 2 a x x x x y w x : i n t e r n a l c o d e y: y e a r w : w e e k 1 2 3 4 5 6 7 8 p 8 3 0 2 a x x x x y w t o p v i e w d f n 3 x 3 s d n c i n + i n - v o - g n d v d d v o + s d n c i n + i n - v o - g n d v d d v o + i n + s d v o - v o + m o d u l a t o r d r i v e r i n t e r n a l o s c i l l a t o r o s c t h e r m a l p r o t e c t i o n s h o r t p r o t e c t i o n g n d v d d s h u t d o w n i n - 0 9 / 2 0 1 1 r e v 1 . 5 t o p v i e w d f n 2 x 2 b q y w 1 2 3 4 8 7 6 5 b q : p r o d u c t c o d e y: y e a r w : w e e k l y v o + v d d e n i n - v o - p g n d a g n d i n +
3 a b s o l u t e m a x i m u m r a t i n g s t h e s e a r e s t r e s s r a t i n g s o n l y a n d f u n c t i o n a l o p e r 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 s f o r p r o l o n g e d t i m e 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 . 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 r o u n d . s u p p l y vo l t a g e a t n o i n p u t s i g n a l . . . . . . . . . . . . . . . . . . . 6 . 0 v s t o r a g e t e m p e r a t u r e . . . . . . . . . . . . . . . . . . . . . - 6 5 t o 1 5 0 s o l d e r i n g t e m p e r a t u r e . . . . . . . . . . . . . . . . . . . . . . . m a x i m u m j u n c t i o n t e m p e r a t u r e . . . . . . . . . . . . . . . . . . 1 5 0 i n p u t vo l t a g e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 0 . 3 v t o v + 0 . 3 v d d 3 0 0 , 5 s e c c c c c p o w e r a n a l o g m i c r o e l e c t r o n i c s , i n c r e c o m m e n d e d o p e r a t i n g c o n d i t i o n s s u p p l y v o l t a g e r a n g e . . . . . . . . . . . . . . . . . . . . . . . . o p e r a t i o n t e m p e r a t u r e r a n g e . . . . . . . . j u n c t i o n t e m p e r a t u r e r a n g e . . . . . . . . . - 4 0 t o 1 2 5 2 . 5 v t o 5 . 5 v - 4 0 t o 8 5 c c c c t h e r m a l i n f o r m a t i o n w w w . p o w e r a n a l o g . c o m p a m 8 3 0 2 a 2 . 5 w f i l t e r l e s s c l a s s - d m o n o a u d i o a m p l i f i e r p a r a m e t e r s y m b o l p a c k a g e m a x i m u m u n i t s o p - 8 1 1 5 c / w m s o p - 8 1 8 0 c / w d f n 3 x 3 - 8 4 7 . 9 c / w t h e r m a l r e si s t a n ce ( ju n ct i o n t o a m b i e n t ) j a d f n 2 x 2 - 8 8 0 c / w 0 9 / 2 0 1 1 r e v 1 . 5
4 p o w e r a n a l o g m i c r o e l e c t r o n i c s , i n c e l e c t r i c a l c h a r a c t e r i s t i c v = 5 v , g a i n = 2 4 d b , r = 4 , t = 2 5 c u n l e s s o t h e r w i s e n o t e d . d d l a w w w . p o w e r a n a l o g . c o m p a m 8 3 0 2 a 2 . 5 w f i l t e r l e s s c l a s s - d m o n o a u d i o a m p l i f i e r p a r a m et er sy m bol condit ions m in ty p m a x unit s sup pl y vol tag e ra nge v dd 2.5 5 .5 v qui es c ent current i q no lo ad 4 8 m a shut do wn curre nt i shdn v shdn = 0 v 1 a v dd = 5v 2.25 2. 50 f = 1 k hz , r l = 4 t hd+ n= 1 0% v dd = 3.6 v 1.10 1.2 5 v dd = 5v 1.80 2 .00 f = 1 k h z , r l = 4 t hd+ n= 1% v dd = 3.6 v 0.86 0.9 5 v dd = 5v 1.35 1. 5 0 f = 1 k hz , r l = 8 t hd+ n= 1 0% v dd = 3.6 v 0.72 0.8 0 v dd = 5v 1.15 1.3 0 output po wer p o f= 1 k hz , r l = 8 t hd+ n= 1% v dd = 3.6 v 0.6 0.6 5 w peak ef f i c i enc y f = 1k hz 85 88 % r l = 8 p o = 0 .1 w , f = 1k h z 0. 30 0.35 r l = 8 p o = 0 .5 w , f = 1k h z 0.4 5 0.50 r l = 4 p o = 0 .1 w , f = 1k h z 0.35 0.40 t otal harm oni c di s torti on p l us noi s e t hd+ n r l = 4 p o = 0 .5 w , f = 1k h z 0. 40 0.45 % gai n gv 22.5 24 25.5 db po w er su pp l y ri p pl e rej ec ti on psr r no i nput , f = 1k hz , v pp = 20 0 m v 45 50 db dy na m i c ra nge dy n f = 20 t o 20 k hz 85 90 db si g na l to no i s e rat i o snr f = 20 to 20 k h z 75 80 db no a - w ei ght i n g 180 300 noi s e vn a - w ei ght i ng 120 200 v os c i l l at or frequ enc y f osc 200 250 30 0 k hz p mosf et 0.45 0.50 drai n - s ourc e on - stat e res i s t anc e r ds( on ) i ds = 1 00m a n mosf et 0.20 0.25 s hdn input h i g h v s h 1.2 v s hdn input lo w v s l 0.4 v ov er t e m perature protec t i on ot p j unct i on t e mperat ure 120 135 c ov er t e m perat ure h y s tere s i s ot h 30 c 0 9 / 2 0 1 1 r e v 1 . 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 o t = 2 5 c , u n l e s s o t h e r w i s e n o t e d . a 5 0 9 / 2 0 1 1 r e v 1 . 5 p o w e r a n a l o g m i c r o e l e c t r o n i c s , i n c w w w . p o w e r a n a l o g . c o m p a m 8 3 0 2 a 2 . 5 w f i l t e r l e s s c l a s s - d m o n o a u d i o a m p l i f i e r t h d + n v s o u t p u t p o w e r r = 8 , g a i n = 2 3 d b , f = 1 k h z l t h d + n v s o u t p u t p o w e r r = 4 , g a i n = 2 3 d b , f = 1 k h z l t h d + n v s f r e q u e n c y r = 8 , c i n = 0 . 1 f , g a i n = 2 3 d b , v = 5 v l d d t h d + n v s f r e q u e n c y r = 8 , c i n = 0 . 1 f , g a i n = 2 3 d b , v = 3 . 6 v l d d t h d + n v s f r e q u e n c y r = 4 , c i n = 0 . 1 f , g a i n = 2 3 d b , v = 5 v l d d t h d + n v s f r e q u e n c y r = 4 , c i n = 0 . 1 f , g a i n = 2 3 d b , v = 3 . 6 v l d d 0 . 1 5 0 0 . 2 0 . 5 1 2 5 1 0 2 0 % 2 0 m 3 5 0 m 1 0 0 m 2 0 0 m 5 0 0 m 1 2 w v = 3 . 6 v d d v = 4 . 2 v d d v = 5 v d d 0 . 0 2 1 0 0 . 0 5 0 . 1 0 . 2 0 . 5 1 2 5 % 2 0 2 0 k 5 0 1 0 0 2 0 0 5 0 0 1 k 2 k 5 k 1 0 k h z p o = 2 0 0 m w p o = 5 0 0 m w 0 . 0 2 1 0 0 . 0 5 0 . 1 0 . 2 0 . 5 1 2 5 % 2 0 2 0 k 5 0 1 0 0 2 0 0 5 0 0 1 k 2 k 5 k 1 0 k h z 0 . 0 1 1 0 0 . 0 2 0 . 0 5 0 . 1 0 . 2 0 . 5 1 2 5 % 2 0 2 0 k 5 0 1 0 0 2 0 0 5 0 0 1 k 2 k 5 k 1 0 k h z 0 . 0 1 1 0 0 . 0 2 0 . 0 5 0 . 1 0 . 2 0 . 5 1 2 5 % 2 0 2 0 k 5 0 1 0 0 2 0 0 5 0 0 1 k 2 k 5 k 1 0 k h z 0 . 1 5 0 0 . 2 0 . 5 1 2 5 1 0 2 0 % 2 0 m 3 5 0 m 1 0 0 m 2 0 0 m 5 0 0 m 1 2 w v = 3 . 6 v d d v = 4 . 2 v d d v = 5 v d d p o = 2 0 0 m w p o = 5 0 0 m w p o = 2 0 0 m w p o = 5 0 0 m w p o = 2 0 0 m w p o = 5 0 0 m w
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 o t = 2 5 c , u n l e s s o t h e r w i s e n o t e d . a 6 0 9 / 2 0 1 1 r e v 1 . 5 p o w e r a n a l o g m i c r o e l e c t r o n i c s , i n c w w w . p o w e r a n a l o g . c o m p a m 8 3 0 2 a 2 . 5 w f i l t e r l e s s c l a s s - d m o n o a u d i o a m p l i f i e r q u i e s c e n t c u r r e n t v s t e m p e r a t u r e n o i n p u t , n o l o a d , v = 5 . 0 v d d 0 1 2 3 4 5 6 7 8 0 5 0 1 0 0 1 5 0 t e m p e r a tu r e q u i e s c e n t c u r r e n t ( m a ) 0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 3 0 0 3 5 0 0 5 0 1 0 0 1 5 0 te m pe r a t ur e o s c i l l a t o r f r e q u e n c y ( k h z ) f r e q u e n c y v s t e m p e r a t u r e n o i n p u t , n o l o a d , v = 5 . 0 v d d s u p p l y c u r r e n t v s o u t p u t p o w e r r = 8 + 3 3 h l 0 0 . 0 5 0 . 1 0 . 1 5 0 . 2 0 . 2 5 0 . 3 0 . 3 5 0 . 4 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 o u t p u t p o w e r ( m w ) s u p p l y c u r r e n t ( a ) v d d = 3 . 6 v v d d = 5 v s u p p l y c u r r e n t v s o u t p u t p o w e r v = 5 . 0 v d d 0 0 . 1 0 . 2 0 . 3 0 . 4 0 . 5 0 . 6 0 . 7 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 o u t p u t p o w e r ( m w ) s u p p l y c u r r e n t ( a ) l o a d = 8 o h m + 3 3 u h l = 4 o h m + 3 3 u h o u t p u t p o w e r v s . s u p p l y vo l t a g e r = 8 l o u t p u t p o w e r v s . s u p p l y vo l t a g e r = 4 l 0 0 . 5 1 1 . 5 2 2 . 5 2.8 3 3.2 3.4 3.6 3.8 4 4.2 4.4 4.6 4.8 5 5.2 5.4 s u p p l y v o l t a g e ( v ) o u t p u t p o w e r ( w ) t h d = 1 % t h d = 1 0 % 0 0 . 5 1 1 . 5 2 2 . 5 3 3 . 5 2 . 5 3 3 . 5 4 4 . 5 5 5 . 5 s u p p ly v o lt a g e ( v ) o u t p u t p o w e r ( w ) t h d + n = 1 % t h d + n = 1 0 %
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 o t = 2 5 c , u n l e s s o t h e r w i s e n o t e d . a 7 p o w e r a n a l o g m i c r o e l e c t r o n i c s , i n c w w w . p o w e r a n a l o g . c o m p a m 8 3 0 2 a 2 . 5 w f i l t e r l e s s c l a s s - d m o n o a u d i o a m p l i f i e r 6 0 % 6 5 % 7 0 % 7 5 % 8 0 % 8 5 % 9 0 % 9 5 % 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 2 5 0 0 3 0 0 0 o u t p u t p o w e r ( m w ) e f f i c i e n c y l o a d = 8 o h m + 3 3 u h l o a d = 4 o h m + 3 3 u h 6 0 % 6 5 % 7 0 % 7 5 % 8 0 % 8 5 % 9 0 % 9 5 % 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 o u t p u t p o w e r ( m w ) e f f i c i e n c y v i n = 5 v v i n = 3 . 6 v e f f i c i e n c y v s o u t p u t p o w e r v = 5 . 0 v d d r = 8 + 3 3 l e f f i c i e n c y v s o u t p u t p o w e r 0 . 0 0 0 . 0 2 0 . 0 4 0 . 0 6 0 . 0 8 0 . 1 0 0 . 1 2 0 . 1 4 0 . 1 6 0 5 0 0 1 0 0 0 1 5 0 0 2 0 0 0 ou t p u t p o w e r ( w ) p o w e r d i s s i p a t i o n ( w ) v d d = 5 v v d d = 3 . 6 v o d i i a i o n v . u u o u i n u n v . u vo a n o o a d u n v . u vo a 0 0 . 5 1 1 . 5 2 2 . 5 3 3 . 5 4 4 . 5 2 . 5 3 3 . 5 4 4 . 5 5 5 . 5 s u p p ly v o lt a g e ( v ) q u i e s c e n t c u r r e n t ( m a ) r 8 l 0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 3 0 0 3 5 0 2 . 5 3 3 . 5 4 4 . 5 5 5 . 5 su p p l y v o l t a g e ( v ) o s c i l l a t o r f r e q u e n c y ( k h z ) 0 9 / 2 0 1 1 r e v 1 . 5
8 0 9 / 2 0 1 1 r e v 1 . 5 p o w e r a n a l o g m i c r o e l e c t r o n i c s , i n c w w w . p o w e r a n a l o g . c o m p a m 8 3 0 2 a 2 . 5 w f i l t e r l e s s c l a s s - d m o n o a u d i o a m p l i f i e r n o t e s 1 . t h e a p a u x - 0 0 2 5 l o w p a s s f i l t e r i s n e c e s s a r y f o r e v e r y c l a s s - d a m p l i f i e r m e a s u r e m e n t w i t h a p a n a l y z e r. 2 . tw o 2 2 h i n d u c t o r s a r e u s e d i n s e r i e s w i t h l o a d r e s i s t o r t o e m u l a t e t h e s m a l l s p e a k e r f o r e f f i c i e n c y m e a s u r e m e n t . t e s t s e t u p f o r p e r f o r m a n c e t e s t i n g a p s y s t e m o n e g e n e r a t o r p a m 8 3 0 2 a d e m o b o a r d + o u t i n p u t l o a d a p l o w p a s s f i l t e r a u x - 0 0 2 5 a p s y s t e m t w o a n a l y z e r g n d - o u t v d d p o w e r s u p p l y
9 p o w e r a n a l o g m i c r o e l e c t r o n i c s , i n c a p p l i c a t i o n i n f o r m a t i o n w w w . p o w e r a n a l o g . c o m p a m 8 3 0 2 a 2 . 5 w f i l t e r l e s s c l a s s - d m o n o a u d i o a m p l i f i e r m a x i m u m g a i n a s s h o w n i n b l o c k d i a g r a m ( p a g e 2 ) , t h e p a m 8 3 0 2 a h a s t w o i n t e r n a l a m p l i f i e r s t a g e s . t h e f i r s t s t a g e ' s g a i n i s e x t e r n a l l y c o n f i g u r a b l e , w h i l e t h e s e c o n d s t a g e ' s i s i n t e r n a l l y f i x e d . t h e c l o s e d - l o o p g a i n o f t h e f i r s t s t a g e i s s e t b y s e l e c t i n g t h e r a t i o o f r t o r w h i l e t h e s e c o n d s t a g e ' s g a i n i s f i f i x e d a t 2 x . t h e o u t p u t o f a m p l i f i e r 1 s e r v e s a s t h e i n p u t t o a m p l i f i e r 2 , t h u s t h e t w o a m p l i f i e r s p r o d u c e s i g n a l s i d e n t i c a l i n m a g n i t u d e , b u t d i f f e r e n t i n p h a s e b y 1 8 0 . c o n s e q u e n t l y , t h e d i f f e r e n t i a l g a i n f o r t h e i c i s a = 2 0 * l o g [ 2 * ( r / r ) ] v d f i t h e p a m 8 3 0 2 a s e t s m a x i m u m r = 8 0 k , m i n i m u m f r = 1 0 k , s o t h e m a x i m u m c l o s e d - g a i n i s 2 4 d b . i c a p a c i t o r i s t h e b e s t c h o i c e . w h e n a p o l a r i z e d c a p a c i t o r i s u s e d , t h e p o s i t i v e s i d e o f t h e c a p a c i t o r s h o u l d f a c e t h e a m p l i f i e r i n p u t i n m o s t a p p l i c a t i o n s a s t h e d c l e v e l i s h e l d a t v d d / 2 , w h i c h i s l i k e l y h i g h e r t h a n t h e s o u r c e d c l e v e l . p l e a s e n o t e t h a t i t i s i m p o r t a n t t o c o n f i r m t h e c a p a c i t o r p o l a r i t y i n t h e a p p l i c a t i o n . p o w e r s u p p l y d e c o u p l i n g ( c s ) t h e p a m 8 3 0 2 a i s a h i g h - p e r f o r m a n c e c m o s a u d i o a m p l i f i e r t h a t r e q u i r e s a d e q u a t e p o w e r s u p p l y d e c o u p l i n g t o e n s u r e t h e o u t p u t t h d a n d p s r r a s l o w a s p o s s i b l e . p o w e r s u p p l y d e c o u p l i n g a f f e c t s l o w f r e q u e n c y r e s p o n s e . o p t i m u m d e c o u p l i n g i s a c h i e v e d b y u s i n g t w o c a p a c i t o r s o f d i f f e r e n t t y p e s t h a t t a r g e t d i f f e r e n t t y p e s o f n o i s e o n t h e p o w e r s u p p l y l e a d s . f o r h i g h e r f r e q u e n c y t r a n s i e n t s , s p i k e s , o r d i g i t a l h a s h o n t h e l i n e , a g o o d l o w e q u i v a l e n t - s e r i e s - i n p u t c a p a c i t o r s ( c i ) r e s i s t a n c e ( e s r ) c e r a m i c c a p a c i t o r, t y p i c a l l y 1 . 0 f i s g o o d , p l a c i n g i t a s c l o s e a s p o s s i b l e t o i n t y p i c a l a p p l i c a t i o n , a n i n p u t c a p a c i t o r, c i , i s t h e d e v i c e v d d t e r m i n a l . f o r f i l t e r i n g l o w e r - r e q u i r e d t o a l l o w t h e a m p l i f i e r t o b i a s i n p u t f r e q u e n c y n o i s e s i g n a l s , a c a p a c i t o r o f 1 0 f o r s i g n a l s t o a p r o p e r d c l e v e l f o r o p t i m u m o p e r a t i o n . i n t h i s c a s e , c i a n d t h e m i n i m u m i n p u t l a r g e r, c l o s e l y l o c a t e d t o n e a r t h e a u d i o p o w e r i m p e d a n c e r i ( 1 0 k i n t e r n a l ) f o r m a h i g h p a s s f i l t e r a m p l i f i e r i s r e c o m m e n d e d . w i t h a c o r n e r f r e q u e n c y d e t e r m i n e d b y t h e f o l l o w i n g e q u a t i o n : s h u t d o w n o p e r a t i o n i n o r d e r t o r e d u c e s h u t d o w n p o w e r c o n s u m p t i o n , t h e p a m 8 3 0 2 a c o n t a i n s s h u t d o w n c i r c u i t r y f o r t u r n o f f t h e a m p l i f i e r. t h i s s h u t d o w n f e a t u r e t u r n s i t i s i m p o r t a n t t o c h o o s e t h e v a l u e o f c i a s i t t h e a m p l i f i e r o f f w h e n a l o g i c l o w i s a p p l i e d o n t h e d i r e c t l y a f f e c t s l o w f r e q u e n c y p e r f o r m a n c e o f t h e s d p i n . b y s w i t c h i n g t h e s h u t d o w n p i n o v e r t o c i r c u i t , f o r e x a m p l e , w h e n a n a p p l i c a t i o n r e q u i r e s g n d , t h e p a m 8 3 0 2 a s u p p l y c u r r e n t d r a w w i l l b e a f l a t b a s s r e s p o n s e a s l o w a s 1 0 0 h z . e q u a t i o n i s m i n i m i z e d i n i d l e m o d e . r e c o n f i g u r e d a s f o l l o w s : f o r t h e b e s t p o w e r o n / o f f p o p p e r f o r m a n c e , t h e a m p l i f i e r s h o u l d b e s e t i n t h e s h u t d o w n m o d e p r i o r t o p o w e r o n / o f f o p e r a t i o n . a s t h e i n p u t r e s i s t a n c e i s v a r i a b l e , f o r t h e c i u n d e r v o l t a g e l o c k - o u t ( u v l o ) v a l u e o f 0 . 1 6 f , o n e s h o u l d a c t u a l l y c h o o s e t h e c i w i t h i n t h e r a n g e o f 0 . 1 f t o 0 . 2 2 f . a f u r t h e r t h e p a m 8 3 0 2 a i n c o r p o r a t e s c i r c u i t r y t o d e t e c t c o n s i d e r a t i o n f o r t h i s c a p a c i t o r i s t h e l e a k a g e l o w o n o r o f f v o l t a g e . w h e n t h e s u p p l y v o l t a g e p a t h f r o m t h e i n p u t s o u r c e t h r o u g h t h e i n p u t d r o p s t o 2 . 1 v o r b e l o w, t h e p a m 8 3 0 2 a g o e s i n t o a n e t w o r k ( r i , r f , c i ) t o t h e l o a d . t h i s l e a k a g e s t a t e o f s h u t d o w n , a n d t h e d e v i c e c o m e s o u t o f i t s c u r r e n t c r e a t e s a d c o f f s e t v o l t a g e a t t h e i n p u t t o s h u t d o w n s t a t e a n d s t a r t s t o n o r m a l o p e r a t i o n b y t h e a m p l i f i e r t h a t r e d u c e s u s e f u l h e a d r o o m , r e s e t t h e p o w e r s u p p l y o r s d p i n . e s p e c i a l l y i n h i g h g a i n a p p l i c a t i o n . f o r t h i s r e a s o n , a l o w l e a k a g e t a n t a l u m o r c e r a m i c ( ) c 1 f 2 rici p = ( ) i c 1 ci 2 r f p =
p a m 8 3 0 2 a 2 . 5 w f i l t e r l e s s c l a s s - d m o n o a u d i o a m p l i f i e r 1 0 0 9 / 2 0 1 1 r e v 1 . 5 p o w e r a n a l o g m i c r o e l e c t r o n i c s , i n c w w w . p o w e r a n a l o g . c o m h o w t o r e d u c e e m i ( e l e c t r o m a g n e t i c i n t e r f e r e n c e ) a s i m p l e s o l u t i o n i s t o p u t a n a d d i t i o n a l c a p a c i t o r 1 0 0 0 f a t p o w e r s u p p l y t e r m i n a l f o r p o w e r l i n e c o u p l i n g i f t h e t r a c e s f r o m a m p l i f i e r t o s p e a k e r s a r e s h o r t ( < 2 0 c m ) . m o s t a p p l i c a t i o n s r e q u i r e a f e r r i t e b e a d f i l t e r a s s h o w n a t f i g u r e 1 . t h e f e r r i t e f i l t e r d e p r e s s e s e m i o f a r o u n d 1 m h z a n d h i g h e r. w h e n s e l e c t i n g a f e r r i t e b e a d , c h o o s e o n e w i t h h i g h i m p e d a n c e a t h i g h f r e q u e n c i e s a n d l o w i m p e d a n c e a t l o w f r e q u e n c i e s . f i g u r e 1 : f e r r i t e b e a d f i l t e r t o r e d u c e e m i 2 2 0pf 2 2 0pf ou t+ ou t - f e rrit e be ad f e rrit e be ad
p a m 8 3 0 2 a 2 . 5 w f i l t e r l e s s c l a s s - d m o n o a u d i o a m p l i f i e r o r d e r i n g i n f o r m a t i o n p a m 8 3 0 2 a x x x x p i n c o n f i g u r a t i o n n u m b e r o f p i n s p a c k a g e ty p e p i n c o n f i g u r a t i o n p a c k a g e t y p e n u m b e r o f p i n s a : b : 1 : s d 1 : v o + 2 : n c 2 : v d d 3 : i n + 3 : e n 4 : i n - 4 : i n - 5 : v o + 5 : i n + 6 : v d d 6 : a g n d 7 : g n d 7 : p g n d 8 : v o - 8 : v o - s : m s o p d : s o p y : d f n 3 x 3 g : d f n 2 x 2 c : 8 1 1 0 9 / 2 0 1 1 r e v 1 . 5 p o w e r a n a l o g m i c r o e l e c t r o n i c s , i n c w w w . p o w e r a n a l o g . c o m p a r t n u m b e r p a c k a g e t y p e m o q / s h i p p i n g p a c k a g e p a m 8 3 0 2 a a s c r m s o p - 8 2 , 5 0 0 u n i t s / t a p e & r e e l p a m 8 3 0 2 a a d c r s o p - 8 2 , 5 0 0 u n i t s / t a p e & r e e l p a m 8 3 0 2 a a y c r d f n 3 x3 - 8 3 , 0 0 0 u n i t s / t a p e & r e e l p a m 8 3 0 2 a b g c r d f n 2 x 2 - 8 3 , 0 0 0 u n i t s / t a p e & r e e l s h i p p i n g p a c k a g e
1 2 0 9 / 2 0 1 1 r e v 1 . 5 p o w e r a n a l o g m i c r o e l e c t r o n i c s , i n c o u t l i n e d i m e n s i o n s w w w . p o w e r a n a l o g . c o m p a m 8 3 0 2 a 2 . 5 w f i l t e r l e s s c l a s s - d m o n o a u d i o a m p l i f i e r mil lim eter ref min max a -- 1.10 a1 0.05 0.15 a2 0.78 0.94 b 0.22 0.38 c 0.08 0 .23 d 2.90 3.10 e 2.90 3.10 e1 4.75 5.05 e 0 .65 bs c l 0.40 0.70 m s o p - 8
1 3 0 9 / 2 0 1 1 r e v 1 . 5 p o w e r a n a l o g m i c r o e l e c t r o n i c s , i n c o u t l i n e d i m e n s i o n s w w w . p o w e r a n a l o g . c o m p a m 8 3 0 2 a 2 . 5 w f i l t e r l e s s c l a s s - d m o n o a u d i o a m p l i f i e r d f n 3 x 3 d f n n o t e : a l l d i m e n s i o n s a r e i n m i l l i m e t e r s .
1 4 0 9 / 2 0 1 1 r e v 1 . 5 p o w e r a n a l o g m i c r o e l e c t r o n i c s , i n c o u t l i n e d i m e n s i o n s w w w . p o w e r a n a l o g . c o m p a m 8 3 0 2 a 2 . 5 w f i l t e r l e s s c l a s s - d m o n o a u d i o a m p l i f i e r - a c b g h l 0 . 2 5 m f e d j k d i men si o n s mi l l i m et ers ref mi n max a 5.80 6.20 b 4.80 5.00 c 3.80 4.00 d 0 o 8 o e 0.40 0.90 f 0.19 0.25 m 0.10 0.25 h 0.35 0.49 l 1.35 1.75 j 0.375 ref k 45 o g 1.27 t y p
1 5 0 9 / 2 0 1 1 r e v 1 . 5 p o w e r a n a l o g m i c r o e l e c t r o n i c s , i n c o u t l i n e d i m e n s i o n s w w w . p o w e r a n a l o g . c o m p a m 8 3 0 2 a 2 . 5 w f i l t e r l e s s c l a s s - d m o n o a u d i o a m p l i f i e r d f n 2 x 2

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