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c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 1 a n p e c r e s e r v e s t h e r i g h t t o m a k e c h a n g e s t o i m p r o v e r e l i a b i l i t y o r m a n u f a c t u r a b i l i t y w i t h o u t n o t i c e , a n d a d v i s e c u s t o m e r s t o o b t a i n t h e l a t e s t v e r s i o n o f r e l e v a n t i n f o r m a t i o n t o v e r i f y b e f o r e p l a c i n g o r d e r s . s t e r e o 2 - w a u d i o p o w e r a m p l i f i e r ( w i t h d c _ v o l u m e c o n t r o l ) a p a 2 1 2 0 / 1 i s a m o n o l i t h i c i n t e g r a t e d c i r c u i t , w h i c h p r o - v i d e s p r e c i s e d c v o l u m e c o n t r o l , a n d a s t e r e o b r i d g e d a u d i o p o w e r a m p l i f i e r s i s c a p a b l e o f p r o d u c i n g 2 . 7 w ( 2 . 0 w ) i n t o 3 w w i t h l e s s t h a n 1 0 % ( 1 . 0 % ) t h d + n . t h e a t - t e n u a t o r r a n g e o f t h e v o l u m e c o n t r o l i n a p a 2 1 2 0 / 1 i s f r o m 2 0 d b ( d c _ v o l = 0 v ) t o - 8 0 d b ( d c _ v o l = 3 . 5 4 v ) w i t h 3 2 s t e p s . t h e a d v a n t a g e o f i n t e r n a l g a i n s e t t i n g c a n b e l e s s c o m p o n e n t s a n d p c b a r e a . b o t h o f t h e d e p o p c i r c u i t r y a n d t h e t h e r m a l s h u t d o w n p r o t e c t i o n c i r c u i t r y a r e i n t e - g r a t e d i n a p a 2 1 2 0 / 1 a n d r e d u c e p o p s a n d c l i c k s n o i s e d u r i n g p o w e r u p o r s h u t d o w n m o d e o p e r a t i o n . i t a l s o i m p r o v e s t h e p o w e r o f f p o p n o i s e a n d p r o t e c t s t h e c h i p f r o m b e i n g d e s t r o y e d b y o v e r t e m p e r a t u r e a n d s h o r t c u r - r e n t f a i l u r e . t o s i m p l i f y t h e a u d i o s y s t e m d e s i g n , a p a 2 1 2 0 / 1 c o m b i n e s a s t e r e o b r i d g e - t i e d l o a d s ( b t l ) m o d e f o r s p e a k e r d r i v e a n d a s t e r e o s i n g l e - e n d ( s e ) m o d e f o r h e a d - p h o n e d r i v e i n t o a s i n g l e c h i p , w h e r e b o t h m o d e s a r e e a s i l y s w i t c h e d b y t h e s e / b t l i n p u t c o n t r o l p i n s i g n a l . b e s i d e s , t h e m u l t i p l e i n p u t s e l e c t i o n i s u s e d f o r p o r t a b l e a u d i o s y s t e m . l o w o p e r a t i n g c u r r e n t w i t h 1 4 m a i m p r o v e d d e p o p c i r c u i t r y t o e l i m i n a t e t u r n - o n a n d t u r n - o f f t r a n s i e n t s i n o u t p u t s h i g h p s r r 3 2 s t e p s v o l u m e a d j u s t a b l e b y d c v o l t a g e w i t h h y s t e r e s i s 2 w p e r c h a n n e l o u t p u t p o w e r i n t o 4 w l o a d a t 5 v , b t l m o d e ? t w o o u t p u t m o d e s a l l o w a b l e w i t h b t l a n d s e m o d e s s e l e c t e d b y s e / b t l p i n ? l o w c u r r e n t c o n s u m p t i o n i n s h u t d o w n m o d e ( 5 0 m a ) ? s h o r t c i r c u i t p r o t e c t i o n ? p o w e r o f f d e p o p c i r c u i t i n t e g r a t i o n ? t s s o p - 2 4 p w i t h o r w i t h o u t t h e r m a l p a d p a c k a g e ? l e a d f r e e a n d g r e e n d e v i c e s a v a i l a b l e ( r o h s c o m p l i a n t ) f e a t u r e s a p p l i c a t i o n s g e n e r a l d e s c r i p t i o n o r d e r i n g a n d m a r k i n g i n f o r m a t i o n ? n o t e b o o k p c ? l c d m o n i t o r o r t v apa2120/1 handling code temperature range package code package code r : tssop-24p operating ambient temperature range i : - 40 to 85 o c handling code tr : tape & reel assembly material l : lead free device g : halogen and lead free device apa2120/1 r : apa2120/1 xxxxx xxxxx - date code assembly material n o t e : a n p e c l e a d - f r e e p r o d u c t s c o n t a i n m o l d i n g c o m p o u n d s / d i e a t t a c h m a t e r i a l s a n d 1 0 0 % m a t t e t i n p l a t e t e r m i n a t i o n f i n i s h ; w h i c h a r e f u l l y c o m p l i a n t w i t h r o h s . a n p e c l e a d - f r e e p r o d u c t s m e e t o r e x c e e d t h e l e a d - f r e e r e q u i r e m e n t s o f i p c / j e d e c j - s t d - 0 2 0 c f o r m s l c l a s s i f i c a t i o n a t l e a d - f r e e p e a k r e f l o w t e m p e r a t u r e . a n p e c d e f i n e s ? g r e e n ? t o m e a n l e a d - f r e e ( r o h s c o m p l i a n t ) a n d h a l o g e n f r e e ( b r o r c l d o e s n o t e x c e e d 9 0 0 p p m b y w e i g h t i n h o m o g e n e o u s m a t e r i a l a n d t o t a l o f b r a n d c l d o e s n o t e x c e e d 1 5 0 0 p p m b y w e i g h t ) .
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 2 ( o v e r o p e r a t i n g f r e e - a i r t e m p e r a t u r e r a n g e u n l e s s o t h e r w i s e n o t e d . ) symbol parameter rating unit v dd supply voltage range - 0.3 to 6 v v in input voltage range, se/btl, hp/line, shutdown, pcben - 0.3 to v dd +0.3 v t a operating ambient temperature range - 40 to 85 c t j maximum junction temperature intermal limited (note 1) c t stg storage temperature range - 65 to +150 c t s maximum lead soldering temperature,10 seconds 260 c p d power dissipation intermal limited a b s o l u t e m a x i m u m r a t i n g s ( n o t e 1 ) n o t e 1 : a p a 2 1 2 0 / 1 i n t e g r a t e d i n t e r n a l t h e r m a l s h u t d o w n p r o t e c t i o n w h e n j u n c t i o n t e m p e r a t u r e r a m p u p t o 1 5 0 c p i n c o n f i g u r a t i o n a p a 2 1 2 0 / 1 b o t t o m v i e w thermal pad multiple input selection pcbeep control input apa2120 se/btl pcben apa2121 hp/line - 1 10 11 12 2 3 4 5 6 7 8 9 24 23 22 21 20 19 18 17 16 15 14 13 lout- lhpin rbypass gnd pcben volume lout+ llinein lbypass pvdd gnd bypass gnd rlinein shutdown rout+ rhpin se/btl pvdd gnd pc-beep vdd clk rout- apa2120 top view 1 10 11 12 2 3 4 5 6 7 8 9 24 23 22 21 20 19 18 17 16 15 14 13 lout- lhpin rbypass gnd hp/line volume lout+ llinein lbypass pvdd gnd bypass gnd rlinein shutdown rout+ rhpin se/btl pvdd gnd pc-beep vdd clk rout- apa2121 top view
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 3 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 symbol parameter range unit v dd supply voltage 4.5 ~ 5.5 v shutdown, pcben 2 ~ v ih high level threshold voltage se/btl , hp/line 4 ~ v shutdown, pcben ~ 1.0 v il low level threshold voltage se/btl , hp/line ~ 3 v v icm common mode input v oltage v dd - 1.0 ~ v v d d = 5 v , - 2 0 c < t a < 8 5 c ( u n l e s s o t h e r w i s e n o t e d ) 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 t h e r m a l c h a r a c t e r i s t i c s symbol parameter typical value unit q ja thermal resistance from junction to ambient in free air (note 2) tssop - 24 p 45 c/w apa2120/1 symbol parameter test condition s min. typ. max. unit v dd supply voltage 4.5 - 5.5 v se/btl=0v - 14 25 i dd supply current se/btl=5v - 8.0 15 ma i sd supply current in shutdown mode se/btl=5v shutdown=0v - 50 - m a i ih high input curren t - 900 - na i il low input current - 900 - na v os output differential voltage - 5 - mv n o t e 2 : 5 i n 2 p r i n t e d c i r c u i t b o a r d w i t h 2 o z t r a c e a n d c o p p e r p a d t h r o u g h 9 2 5 m i l d i a m e t e r v i a s . t h e t h e r m a l p a d o n t h e t s s o p _ p p a c k a g e w i t h s o l d e r o n t h e p r i n t e d c i r c u i t b o a r d . apa2120/1 symbol parameter test condition s min. typ. max. unit thd+n=10%, r l =3 w , f in =1khz - 2.7 - thd+n=10%, r l =4 w , f in =1khz - 2.3 - thd+n=10%, r l =8 w , f in =1khz - 1.5 - thd+n=1%, r l =3 w , f in =1khz - 2.0 - thd+n=1 %, r l =4 w , f in =1khz - 1.9 - p o maximum output power thd+n=0.5%, r l =8 w , f in =1khz 1 1.1 - w p o =1.5w, r l =4 w , f in =1khz - 0.05 - thd+n total harmonic distortion plus noise p o =1w, r l =8 w , f in =1khz - 0.07 - % psrr power ripple rejection ratio v in =0.1vrms, r l =8 w , c b =1 m f, f in =120hz - 60 - db o p e r a t i n g c h a r a c t e r i s t i c s , b t l m o d e v d d = 5 v , t a = 2 5 c , r l = 4 w , a v = 2 v / v ( u n l e s s o t h e r w i s e n o t e d )
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 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 ( c o n t . ) apa2120/1 symbol parameter test condition s min. typ. max. unit thd+n=10%, r l =8 w , f in =1khz - 400 - thd+n=10%, r l =32 w , f in =1khz - 110 - thd+n=1%, r l =8 w , f in =1khz - 320 - p o maximum output power thd+n=1%, r l =32 w , f in =1khz - 90 - mw p o =250mw, r l =8 w , f in =1khz - 0.08 - thd+n to tal harmonic distortion plus noise p o =75mw, r l =32 w , f in =1khz - 0.08 - % psrr power ripple rejection ratio v in =0.1vrms, r l =8 w , c b =1 m f, f in =120hz - 48 - db xtalk channel separation c b =1 m f, r l =32 w , f in =1khz - 100 - db s/n signal to noise ratio p o =75mw, se, r l =32 w , a_weighting - 100 - db o p e r a t i n g c h a r a c t e r i s t i c s , b t l m o d e v d d = 5 v , t a = 2 5 c , r l = 4 w , a v = 2 v / v ( u n l e s s o t h e r w i s e n o t e d ) apa2120/1 symbol parameter test condition s min. typ. max. unit xtalk channel separation c b =1 m f, r l =8 w , f in =1khz - 90 - db s/n signal to noise ratio p o =1.1mw, r l =8 w , a_weighting - 95 - db o p e r a t i n g c h a r a c t e r i s t i c s , s e m o d e v d d = 5 v , t a = 2 5 c , r l = 4 w , g a i n = 1 v / v ( u n l e s s o t h e r w i s e n o t e d )
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 5 0.01 10 0.1 1 20 20k 50 100 200 500 1k 2k 5k thd+n vs. frequency t h d + n ( % ) frequency (w) 0.01 10 0.1 1 100m 3 200m 500m 800m 2 thd+n vs. output power t h d + n ( % ) output power (w) 0.01 10 0.1 1 10m 3 100m 1 2 thd+n vs. output power t h d + n ( % ) output power (w) 0.01 10 0.1 1 20 20k 100 1k thd+n vs. frequency t h d + n ( % ) frequency (hz) t y p i c a l o p e r a t i n g c h a r a c t e r i s t i c s v d d = 5 v r l = 3 w p o = 1 . 7 5 w b t l a v = 2 a v = 5 a v = 1 0 v d d = 5 v r l = 4 w p o = 1 . 5 w b t l v d d = 5 v r l = 4 w a v = 2 b t l f i n = 2 0 h z f i n = 2 0 k h z f i n = 1 k h z v d d = 5 v r l = 3 w a v = 2 b t l f i n = 2 0 h z f i n = 2 0 k h z f i n = 1 k h z a v = 2 a v = 5 a v = 1 0
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 6 0.01 10 0.1 1 10m 500m 100m thd+n vs. output power t h d + n ( % ) output power (w) 0.01 10 0.1 1 20 20k 100 1k thd+n vs. frequency t h d + n ( % ) frequency (hz) 0.01 10 0.1 1 10m 2 100m 1 thd+n vs. output power t h d + n ( % ) output power (w) 0.01 10 0.1 1 20 20k 100 1k thd+n vs. frequency t h d + n ( % ) frequency (hz) t y p i c a l o p e r a t i n g c h a r a c t e r i s t i c s ( c o n t . ) v d d = 5 v r l = 8 w a v = 2 b t l f i n = 2 0 h z f i n = 2 0 k h z f i n = 1 k h z v d d = 5 v r l = 8 w p o = 2 5 0 m w s e v d d = 5 v r l = 8 w p o = 1 . 0 w b t l a v = 2 a v = 5 a v = 1 0 a v = 1 a v = 5 a v = 2 . 5 v d d = 5 v r l = 8 w a v = 2 b t l f i n = 2 0 h z f i n = 2 0 k h z f i n = 1 k h z
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 7 0.01 10 0.1 1 10m 200m 50m 100m thd+n vs. output power t h d + n ( % ) output power (w) 0.01 10 0.1 1 20 20k 100 1k thd+n vs. frequency t h d + n ( % ) frequency (hz) 0.01 10 0.1 1 10m 300m 100m thd+n vs. output power t h d + n ( % ) output power (w) 0.01 10 0.1 1 20 20k 100 1k thd+n vs. frequency t h d + n ( % ) frequency (hz) v d d = 5 v r l = 3 2 w a v = 1 b t l f i n = 2 0 h z f i n = 2 0 k h z f i n = 1 k h z v d d = 5 v r l = 1 6 w p o = 1 0 0 m w s e a v = 2 a v = 1 a v = 2 . 5 v d d = 5 v r l = 1 6 w a v = 1 b t l f i n = 2 0 h z f i n = 2 0 k h z f i n = 1 k h z v d d = 5 v r l = 3 2 w p o = 7 5 m w s e a v = 1 a v = 5 a v = 2 . 5 t y p i c a l o p e r a t i n g c h a r a c t e r i s t i c s ( c o n t . )
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 8 -120 +0 -100 -80 -60 -40 -20 20 20k 100 1k crosstalk vs. frequency c r o s s t a l k ( d b ) frequency (hz) -120 +0 -100 -80 -60 -40 -20 20 20k 100 1k crosstalk vs. frequency c r o s s t a l k ( d b ) frequency (hz) 0.01 10 0.1 1 100m 3 500m 1 2 thd+n vs. output swing t h d + n ( % ) output swing (vrms) 0.01 10 0.1 1 20 20k 100 1k thd+n vs. frequency t h d + n ( % ) frequency (hz) v d d = 5 v r l = 1 0 w v o = 1 v r m s s e v d d = 5 v r l = 1 0 w a v = 1 s e f i n = 2 0 h z f i n = 2 0 k h z f i n = 1 k h z a v = 1 a v = 5 a v = 2 . 5 v d d = 5 v r l = 3 2 w p o = 7 5 m w a v = 1 s e r - c h t o l - c h l - c h t o r - c h v d d = 5 v r l = 8 w p o = 1 . 0 w a v = 2 b t l r - c h t o l - c h l - c h t o r - c h t y p i c a l o p e r a t i n g c h a r a c t e r i s t i c s ( c o n t . )
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 9 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 0.2 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 power dissipation vs. output power p o w e r d i s s i p a t i o n ( w ) output power (w) 1 m 100 m 2 m 5 m 10 m 20 m 50 m 20 20k 100 1k noise floor vs. frequency n o i s e f l o o r ( m v r m s ) frequency (hz) 1 m 100 m 2 m 5 m 10 m 20 m 50 m 20 20k 100 1k noise floor vs. frequency n o i s e f l o o r ( m v r m s ) frequency (hz) 1 m 100 m 2 m 5 m 10 m 20 m 50 m 20 20k 100 1k noise floor vs. frequency n o i s e f l o o r ( m v r m s ) frequency (hz) v d d = 5 v r l = 3 2 w a v = 1 s e n o f i l t e r a - w e i g h t i n g v d d = 5 v r l = 1 0 k w a v = 1 s e n o f i l t e r a - w e i g h t i n g v d d = 5 v a v = 1 s e r l = 3 2 w r l = 1 6 w r l = 8 w v d d = 5 v r l = 8 w a v = 2 b t l n o f i l t e r a - w e i g h t i n g t y p i c a l o p e r a t i n g c h a r a c t e r i s t i c s ( c o n t . )
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 1 0 0 20 40 60 80 100 120 140 160 2.5 3 3.5 4 4.5 5 5.5 output power vs. supply voltage o u t p u t p o w e r ( m w ) supply voltage (v) 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.5 3 3.5 4 4.5 5 5.5 output power vs. supply voltage o u t p u t p o w e r ( w ) supply voltage (v) 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 0 0.5 1 1.5 2 2.5 power dissipation vs. output power p o w e r d i s s i p a t i o n ( w ) output power (w) 2.5 5 7.5 10 12.5 15 17.5 20 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 supply current vs. supply voltage s u u p l y c u r r e n t ( m a ) supply voltage (v) r l = 8 w a v = 2 b t l t h d + n = 1 0 % t h d + n = 1 % r l = 3 2 w a v = 1 s e t h d + n = 1 0 % t h d + n = 1 % v d d = 5 v a v = 2 b t l r l = 3 w r l = 4 w r l = 8 w n o l o a d s e b t l t y p i c a l o p e r a t i n g c h a r a c t e r i s t i c s ( c o n t . )
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 1 1 -6 +6 -4 -2 +0 +2 +4 20 20k 100 1k close loop response l o o p g a i n ( d b ) frequency (hz) -0 +12 +2 +4 +6 +8 +10 20 20k 100 1k close loop response l o o p g a i n ( d b ) frequency (hz) 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 output power vs. load resistance o u t p u t p o w e r ( w ) load resistance ( w ) 0 0.5 1 1.5 2 2.5 3 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 output power vs. load resistance o u t p u t p o w e r ( w ) load resistance ( w ) v d d = 5 v a v = 2 b t l t h d + n = 1 0 % t h d + n = 1 % v d d = 5 v a v = 1 s e t h d + n = 1 0 % t h d + n = 1 % a v = 2 a v = 5 a v = 1 0 v d d = 5 v r l = 3 2 w a v = 1 s e c o = 3 3 0 m f a v = 1 a v = 2 . 5 a v = 5 v d d = 5 v r l = 8 w a v = 2 b t l c o = 3 3 0 m f t y p i c a l o p e r a t i n g c h a r a c t e r i s t i c s ( c o n t . )
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 1 2 -80 +0 -60 -40 -20 20 20k 100 1k t t psrr vs. frequency r i p p l e r e j e c t i o n r a t i o ( d b ) frequency (hz) v d d = 5 v v i n = 1 0 0 m v r m s r l = 8 w c b y p a s s = 2 . 2 m f b t l s e t y p i c a l o p e r a t i n g c h a r a c t e r i s t i c s ( c o n t . ) pin name no . i/o/p function gnd 1,12, 13,24 ground connection, connected to the thermal pad. pcben 2 i/p beep mode control input, active h, for apa2120 only hp/line 2 i/p multi - input selection input, headphone mode when held high, line - in mode whe n held low for apa2121 only. volume 3 input signal for internal volume gain setting. lout+ 4 o/p left channel positive output in btl mode and se mode. llinein 5 i/p left channel line input terminal, selected when hp/line is held low. lhpin 6 o/p lef t channel headphone input terminal, selected when hp/line is held high. pvdd 7,18 supply voltage only for power amplifier. rbypass 8 i/p right channel bypass voltage. lout - 9 o/p left channel negative output in btl mode and high impedance in se mode. lbypass 10 i/p left channel bias voltage generator. bypass 11 bias voltage generator pc_beep 14 i/p pcbep signal input se/btl 15 i/p output mode control input, high for se output mode and low for btl mode. rout - 16 o/p right channel negative output i n btl mode and high impedance in se mode. clk 17 clock signal generator vdd 19 supply voltage for internal circuit excepting power amplifier. p i n d e s c r i p t i o n
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 1 3 pin name no . i/o/p function rhpin 20 i/p right channel headphone input terminal, selected when hp/line is held high. rout+ 21 o/p right channel positive output in btl mode and se mode. shutdown 22 i/p it will be into shutdown mode when pull low. r linein 23 i/p right channel line input terminal, selected when hp/line is held low. p i n d e s c r i p t i o n ( c o n t . ) b l o c k d i a g r a m shutdown ckt hp/line volume control mux mux se/btl lout+ lout- rout+ rout- llinein rlinein lhpin rhpin hp/line se/btl shutdown rbypass lbypass volume bypass bypass pc-beep ckt pcbeep clock gen clk f o r a p a 2 1 2 1
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 1 4 t y p i c a l a p p l i c a t i o n c i r c u i t s a p a 2 1 2 0 shutdown ckt volume control mux mux se/btl lout+ lout- rout+ rout- llinein rlinein lhpin rhpin pcben se/btl shutdown rbypass lbypass volume bypass bypass pc-beep ckt pcbeep clock gen clk 4 w 4 w ring headphone jack sleeve control pin tip se/btl 0.47 m f 2.2 m f 1 m f 1 m f 1 m f 1 m f 220 m f 220 m f 1k w 1k w l-line r-line r-hp l-hp vdd vdd 100k w beep signal shutdown signal vdd vdd pvdd gnd 0 w 47n f 100 m f 0.1 m f pcben signal 50k w 100k w
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 1 5 a p a 2 1 2 1 t y p i c a l a p p l i c a t i o n c i r c u i t s ( c o n t . ) shutdown ckt hp/line volume control mux mux se/btl lout+ lout- rout+ rout- llinein rlinein lhpin rhpin rbypass lbypass volume bypass bypass pc-beep ckt pcbeep clock gen clk 4 w 4 w ring headphone jack sleeve control pin tip 0.47 m f 2.2 m f 1 m f 1 m f 1 m f 1 m f 220 m f 220 m f 1k w 1k w l-line r-line r-hp l-hp vdd 50k w vdd 100k w beep signal shutdown signal hp/line signal vdd vdd pvdd gnd 0 w 47n f 100 m f 0.1 m f hp/line se/btl shutdown se/btl 100k w se/btl shutdown pc - beep operating m ode x l disable shutdown mode l h disable line input, btl out h h disable hp input, se out x x enable pcbeep input, btl out se/btl hp/line shutdown pc - beep operating mode x x l disable shutdown mode l l h disable line input, btl out l h h disable hp input, btl out h l h disable line input, se out h h h disable hp input, btl out x x x enable pcbeep input, btl out f o r a p a 2 1 2 1 c o n t r o l i n p u t t a b l e f o r a p a 2 1 2 0
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 1 6 v o l u m e c o n t r o l t a b l e _ b t l m o d e gain(db) high(v) low(v) hysteresis(mv) recommended voltage(v) 20 0.12 0.00 0 18 0.23 0.17 52 0.20 16 0.34 0.28 51 0.31 14 0.46 0.39 50 0.43 12 0.57 0.51 49 0.54 10 0.69 0.62 47 0.65 8 0.80 0.73 46 0.77 6 0.91 0.84 45 0.88 4 1.03 0.96 44 0.99 2 1 .14 1.07 43 1.10 0 1.25 1.18 41 1.22 - 2 1.37 1.29 40 1.33 - 4 1.48 1.41 39 1.44 - 6 1.59 1.52 38 1.56 - 8 1.71 1.63 37 1.67 - 10 1.82 1.74 35 1.78 - 12 1.93 1.85 34 1.89 - 14 2.05 1.97 33 2.01 - 16 2.16 2.08 32 2.12 - 18 2.28 2.19 30 2.23 - 20 2.39 2.30 29 2.35 - 22 2.50 2.42 28 2.46 - 24 2.62 2.53 27 2.57 - 26 2.73 2.64 26 2.69 - 28 2.84 2.75 24 2.80 - 30 2.96 2.87 23 2.91 - 32 3.07 2.98 22 3.02 - 34 3.18 3.09 21 3.14 - 36 3.30 3.20 20 3.25 - 38 3.41 3.32 18 3.36 - 40 3.52 3.43 17 3.48 - 80 5.00 3.54 16 5 s u p p l y v o l t a g e v d d = 5 v
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 1 7 a p p l i c a t i o n i n f o r m a t i o n b t l o p e r a t i o n s i n g l e - e n d e d o p e r a t i o n c o n s i d e r t h e s i n g l e - s u p p l y s e c o n f i g u r a t i o n s h o w n a p - p l i c a t i o n c i r c u i t . a c o u p l i n g c a p a c i t o r i s r e q u i r e d t o b l o c k t h e d c o f f s e t v o l t a g e f r o m r e a c h i n g t h e l o a d . t h e s e c a - p a c i t o r s c a n b e q u i t e l a r g e ( a p p r o x i m a t e l y 3 3 m f t o 1 0 0 0 m f ) s o t h e y t e n d t o b e e x p e n s i v e , o c c u p i e d v a l u a b l e p c b a r e a , a n d h a v e t h e a d d i t i o n a l d r a w b a c k o f l i m i t i n g 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 y s t e m ( r e f e r t o t h e o u t p u t c o u p l i n g c a p a c i t o r ) . t h e r u l e s d e s c r i b e d s t i l l h o l d w i t h t h e a d d i t i o n o f t h e f o l l o w i n g r e l a t i o n s h i p : t h e a p a 2 1 2 0 / 1 o u t p u t s t a g e ( p o w e r a m p l i f i e r ) h a s t w o p a i r s o f o p e r a t i o n a l a m p l i f i e r s i n t e r n a l l y , a l l o w e d f o r d i f - f e r e n t a m p l i f i e r c o n f i g u r a t i o n s . o u t p u t s e / b t l o p e r a t i o n t h e b e s t c o s t s a v i n g f e a t u r e o f a p a 2 1 2 0 / 1 i s t h a t t h e y c a n b e s w i t c h e d e a s i l y b e t w e e n b t l a n d s e m o d e s . t h i s f e a t u r e e l i m i n a t e s t h e r e q u i r e m e n t f o r a n a d d i t i o n a l h e a d - p h o n e a m p l i f i e r i n a p p l i c a t i o n s w h e r e i n t e r n a l s t e r e o s p e a k e r s a r e d r i v e n i n t h e b t l m o d e b u t e x t e r n a l h e a d - p h o n e o r s p e a k e r s m u s t b e a c c o m m o d a t e d . f i g u r e 1 : a p a 2 1 2 0 / 1 i n t e r n a l c o n f i g u r a t i o n . ( e a c h c h a n n e l ) vbias circuit out+ out- rl op1 op2 volume control amplifier output signal t h e p o w e r a m p l i f i e r ? s o p 1 g a i n i s s e t t i n g b y i n t e r n a l u n i t y - g a i n a n d t h e i n p u t a u d i o s i g n a l c o m e s f r o m t h e i n t e r n a l v o l u m e c o n t r o l a m p l i f i e r w h i l e t h e s e c o n d a m p l i f i e r o p 2 i s i n t e r n a l l y f i x e d i n a u n i t y - g a i n , i n v e r t i n g c o n f i g u r a t i o n . f i g u r e 1 s h o w s t h a t t h e o u t p u t o f o p 1 i s c o n n e c t e d t o t h e i n p u t t o o p 2 , w h i c h r e s u l t s i n t h e o u t p u t s i g n a l s o f b o t h a m p l i f i e r s w i t h i d e n t i c a l i n m a g n i t u d e , b u t o u t o f p h a s e 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 e a c h c h a n - n e l i s 2 x ( g a i n o f s e m o d e ) . b y d r i v i n g t h e l o a d d i f f e r e n t i a l l y t h r o u g h o u t p u t s o u t + a n d o u t - , a n a m p l i f i e r c o n f i g u r a t i o n c o m m o n l y r e f e r r e d t o b r i d g e d m o d e i s e s t a b l i s h e d . t h e b t l m o d e o p e r a - t i o n i s d i f f e r e n t f r o m t h e c l a s s i c a l s i n g l e - e n d e d s e a m - p l i f i e r c o n f i g u r a t i o n w h e r e o n e s i d e o f i t s l o a d i s c o n - n e c t e d t o t h e g r o u n d . a b t l a m p l i f i e r d e s i g n h a s a f e w d i s t i n c t a d v a n t a g e s o v e r t h e s e c o n f i g u r a t i o n , a s i t p r o v i d e s d i f f e r e n t i a l d r i v e t o t h e l o a d , t h u s d o u b l i n g t h e o u t p u t s w i n g f o r a s p e c i f i e d s u p - p l y v o l t a g e . w h e n p l a c e d u n d e r t h e s a m e c o n d i t i o n s , a b t l a m p l i f i e r h a s f o u r t i m e s t h e o u t p u t p o w e r o f a s e a m p l i f i e r . a b t l c o n f i g u r a t i o n , s u c h a s t h e o n e u s e d i n a p a 2 1 2 0 / 1 , a l s o c r e a t e s a s e c o n d a d v a n t a g e o v e r s e a m p l i f i e r s . s i n c e t h e d i f f e r e n t i a l o u t p u t s , r o u t + , r o u t - , l o u t + , a n d l o u t - , a r e b i a s e d a t h a l f - s u p p l y , i t ? s n o t n e c e s s a r y f o r d c v o l t a g e t o b e a c r o s s t h e l o a d . t h i s e l i m i n a t e s t h e n e e d f o r a n o u t p u t c o u p l i n g c a p a c i t o r w h i c h i s r e q u i r e d i n a s i n g l e s u p p l y , s e c o n f i g u r a t i o n . 1 c b y p a s s x 1 2 5 k w 1 r i c i << 1 r l c c ( 1 ) i n t e r n a l t o t h e a p a 2 1 2 0 / 1 , t w o s e p a r a t e a m p l i f i e r s d r i v e o u t + a n d o u t - ( s e e f i g u r e 1 ) . t h e s e / b t l i n p u t c o n - t r o l s t h e o p e r a t i o n o f t h e f o l l o w e r a m p l i f i e r t h a t d r i v e s l o u t - a n d r o u t - . w h e n s e / b t l i s h e l d l o w , t h e o p 2 i s t u r n e d o n a n d t h e a p a 2 1 2 0 / 1 i s i n t h e b t l m o d e . w h e n s e / b t l i s h e l d h i g h , t h e o p 2 i s i n a h i g h o u t p u t i m p e d a n c e s t a t e , w h i c h c o n f i g u r e s t h e a p a 2 1 2 0 / 1 a s s e d r i v e r f r o m o u t + . i d d i s r e d u c e d b y a p p r o x i m a t e l y o n e - h a l f i n s e m o d e . t h e c o n t r o l o f t h e s e / b t l i n p u t c a n b e a l o g i c - l e v e l t t l s o u r c e , a r e s i s t o r d i v i d e r n e t w o r k , o r t h e s t e r e o h e a d - p h o n e j a c k w i t h s w i t c h p i n a s s h o w n i n t h e a p p l i c a t i o n c i r c u i t . ring headphone jack sleeve control pin tip 1k w vdd 100k w se/btl f i g u r e 2 : s e / b t l i n p u t s e l e c t i o n b y p h o n e j a c k p l u g .
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 1 8 v o l u m e c o n t r o l f u n c t i o n i n f i g u r e 2 , i n p u t s e / b t l o p e r a t e s a s b e l o w : w h e n t h e p h o n e j a c k p l u g i s i n s e r t e d , t h e 1 k w r e s i s t o r i s d i s c o n n e c t e d a n d t h e s e / b t l i n p u t i s p u l l e d h i g h a n d e n a b l e s t h e s e m o d e . w h e n t h e i n p u t g o e s t o a h i g h l e v e l , t h e o u t - a m p l i f i e r i s s h u t d o w n w h i c h c a u s e s t h e s p e a k e r t o m u t e . t h e n , t h e o u t + a m p l i f i e r d r i v e s t h r o u g h t h e o u t p u t c a p a c i t o r ( c c ) i n t o t h e h e a d p h o n e j a c k . w h e n t h e r e i s n o h e a d p h o n e p l u g g e d i n t o t h e s y s t e m , t h e c o n - t a c t p i n o f t h e h e a d p h o n e j a c k i s c o n n e c t e d f r o m t h e s i g - n a l p i n , a n d t h e v o l t a g e d i v i d e r s e t u p b y r e s i s t o r s 1 0 0 k w a n d 1 k w . r e s i s t o r 1 k w t h e n p u l l s l o w t h e s e / b t l p i n , e n a b l i n g t h e b t l f u n c t i o n . apa2021 volume control curve -44 -40 -36 -32 -28 -24 -20 -16 -12 -8 -4 0 4 8 12 16 20 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 (v) gain_btl mode forward backward f i g u r e 3 : g a i n s e t t i n g v s v o l u m e p i n v o l t a g e . o u t p u t s e / b t l o p e r a t i o n ( c o n t . ) a p p l i c a t i o n i n f o r m a t i o n ( c o n t . ) a p a 2 1 2 0 / 1 h a v e a n i n t e r n a l s t e r e o v o l u m e c o n t r o l t h a t s e t t i n g i s t h e f u n c t i o n o f t h e d c v o l t a g e a p p l i e d t o t h e v o l u m e i n p u t p i n . t h e a p a 2 1 2 0 / 1 v o l u m e c o n t r o l c o n - s i s t s o f 3 2 s t e p s t h a t a r e i n d i v i d u a l l y s e l e c t e d b y a v a r i - a b l e d c v o l t a g e l e v e l o n t h e v o l u m e c o n t r o l p i n . t h e r a n g e o f t h e s t e p s , c o n t r o l l e d b y t h e d c v o l t a g e , a r e f r o m 2 0 d b t o - 8 0 d b . e a c h g a i n s t e p c o r r e s p o n d s t o a s p e c i f i c i n p u t v o l t a g e r a n g e a s s h o w n i n t a b l e . t o m i n i m i z e t h e e f f e c t o f n o i s e o n t h e v o l u m e c o n t r o l p i n , w h i c h c a n a f f e c t t h e s e l e c t e d g a i n l e v e l , h y s t e r e s i s a n d c l o c k d e l a y a r e i m p l e m e n t e d . t h e a m o u n t o f h y s t e r e s i s c o r r e s p o n d s t o h a l f o f t h e s t e p w i d t h i s s h o w n i n t h e v o l u m e c o n t r o l g r a p h . f o r t h e h i g h e s t a c c u r a c y , t h e v o l t a g e i s s h o w n i n t h e ? r e c - o m m e n d e d v o l t a g e ? c o l u m n o f t h e t a b l e a n d u s e d t o s e - l e c t a d e s i r e d g a i n . t h i s r e c o m m e n d e d v o l t a g e i s e x a c t l y h a l f w a y b e t w e e n t h e t w o n e a r e s t t r a n s i t i o n s . t h e g a i n l e v e l s a r e 2 d b / s t e p f r o m 2 0 d b t o - 4 0 d b i n b t l m o d e , a n d t h e l a s t s t e p a t - 8 0 d b a s m u t e m o d e . i n p u t r e s i s t a n c e , r i t h e g a i n f o r e a c h a u d i o i n p u t o f t h e a p a 2 1 2 0 / 1 i s s e t b y t h e i n t e r n a l r e s i s t o r s ( r i a n d r f ) o f v o l u m e c o n t r o l a m p l i - f i e r i n i n v e r t i n g c o n f i g u r a t i o n . s e g a i n = r f r i ( 2 ) a v = - r f r i ( 3 ) b t l g a i n = - 2 x b t l m o d e o p e r a t i o n b r i n g s t h e f a c t o r o f 2 i n t h e g a i n e q u a t i o n d u e t o t h e i n v e r t i n g a m p l i f i e r m i r r o r i n g t h e v o l t - a g e s w i n g a c r o s s t h e l o a d . f o r t h e v a r y i n g g a i n s e t t i n g , a p a 2 1 2 0 / 1 g e n e r a t e e a c h i n p u t r e s i s t a n c e o n t h e f i g u r e 4 . t h e i n p u t r e s i s t a n c e w i l l a f f e c t t h e 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 a u d i o s i g n a l . t h e m i n m u m i n p u t r e s i s t a n c e i s 1 0 k w w h e n g a i n s e t t i n g i s 2 0 d b , a n d t h e r e s i s t a n c e w i l l r a m p u p w h e n c l o s e l o o p g a i n b e l o w 2 0 d b . t h e i n p u t r e s i s t a n c e h a s w i d e v a r i a t i o n ( + / - 1 0 % ) c a u s e d b y t h e p r o - c e s s v a r i a t i o n . f i g u r e 4 : i n p u t r e s i s t a n c e v s g a i n s e t t i n g . ri vs gain(btl) 0 20 40 60 80 100 120 -40 -30 -20 -10 0 10 20 gain(db) ri(k w )
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 1 9 i n t h e 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 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 t h e i n p u t s i g n a l t o t h e 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 i m p e d a n c e r i ( 1 0 k w ) f o r m a h i g h - p a s s f i l t e r w i t h t h e 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 i n t h e f o l l o w - i n g e q u a t i o n : i n p u t c a p a c i t o r , c i a p p l i c a t i o n i n f o r m a t i o n ( c o n t . ) f c ( h i g h p a s s ) = 1 2 p x 1 0 k w x c i ( 4 ) t h e v a l u e o f c i i s i m p o r t a n t t o c o n s i d e r a s i t d i r e c t l y a f - f e c t s t h e 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 c i r c u i t . c o n - s i d e r t h e e x a m p l e w h e r e r i i s 1 0 k w a n d t h e s p e c i f i c a t i o n c a l l s f o r a f l a t b a s s r e s p o n s e d o w n t o 1 0 0 h z . e q u a t i o n i s r e c o n f i g u r e d a s b e l o w : c i = 1 2 p x 1 0 k w x f c ( 5 ) w h e n t h e i n p u t r e s i s t a n c e v a r i a t i o n i s c o n s i d e r e d , t h e c i i s 0 . 1 6 m f . t h e r e f o r e , a v a l u e i n t h e r a n g e o f 0 . 2 2 m f t o 1 . 0 m f w o u l d b e c h o s e n . a f u r t h e r 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 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 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 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 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 , 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 s . 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 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 p o l a r i z e d c a p a c i t o r s a r e 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 t h e r e 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 . e f f e c t i v e b y p a s s c a p a c i t o r , c b y p a s s a s o t h e r p o w e r a m p l i f i e r s , p r o p e r s u p p l y b y p a s s i n g i s c r i t i c a l f o r l o w n o i s e p e r f o r m a n c e a n d h i g h p o w e r s u p p l y r e j e c t i o n . t h e c a p a c i t o r s l o c a t e d o n b o t h t h e b y p a s s a n d p o w e r s u p p l y p i n s s h o u l d b e a s c l o s e t o t h e d e v i c e a s p o s s i b l e . t h e e f f e c t o f a l a r g e r b y p a s s c a p a c i t o r w i l l i m p r o v e p s r r d u e t o i n c r e a s e d s u p p l y s t a b i l i t y . t y p i c a l a p p l i c a t i o n s e m - p l o y a 5 v r e g u l a t o r w i t h 1 . 0 m f a n d a 0 . 1 m f b y p a s s c a p a c i - t o r a s s u p p l y f i l t e r i n g . t h i s d o e s n o t e l i m i n a t e t h e n e e d f o r b y p a s s i n g t h e s u p p l y n o d e s o f t h e a p a 2 1 2 0 / 1 . t h e s e l e c t i o n o f b y p a s s c a p a c i t o r s , e s p e c i a l l y c b y p a s s , i s t h u s d e p e n d e n t u p o n d e s i r e d p s r r r e q u i r e m e n t s , c l i c k a n d p o p p e r f o r m a n c e . o n t h e c h i p , t h e r e a r e t h r e e b y p a s s p i n s f o r u s e d , a n d t h e y a r e t i e d t o g e t h e r i n t h e i n t e r n a l c i r c u i t . t h e e f f e c t i v e c a p a c i t a n c e i s t h e c b y p a s s = ( c b / / c l b y a s s s / / c r b y p a s s ) . w h e n a b s o l u t e m i n i m u m c o s t a n d / o r c o m - p o n e n t s p a c e i s r e q u i r e d , o n e b y p a s s c a p a c i t o r c a n b e u s e d . t o a v o i d t h e s t a r t - u p p o p n o i s e , t h e b y p a s s v o l t a g e s h o u l d r i s e s l o w e r t h a n t h e i n p u t b i a s v o l t a g e a n d t h e r e l a t i o n - s h i p s h o w n i n e q u a t i o n ( 6 ) s h o u l d b e m a i n t a i n e d . 1 c b y p a s s x 1 2 5 k w < < 1 1 0 0 k w x c i ( 6 ) t h e b y p a s s c a p a c i t o r i s f e d f r o m a 1 2 5 k w r e s i s t o r i n s i d e t h e a m p l i f i e r a n d t h e 1 0 0 k w i s m a x i m u m i n p u t r e s i s t a n c e o f ( r i + r f ) . b y p a s s c a p a c i t o r , c b , v a l u e s o f 3 . 3 m f t o 1 0 m f c e r a m i c o r t a n t a l u m l o w - e s r c a p a c i t o r s a r e r e c o m - m e n d e d f o r t h e b e s t t h d a n d n o i s e p e r f o r m a n c e . t h e b y p a s s c a p a c i t a n c e a l s o e f f e c t s t o t h e s t a r t u p t i m e . i t i s d e t e r m i n e d i n t h e f o l l o w i n g e q u a t i o n : t s t a r t u p = 5 x ( c b y p a s s x 1 2 5 k w ) ( 7 ) o u t p u t c o u p l i n g c a p a c i t o r , c c i n t h e t y p i c a l s i n g l e - s u p p l y s e c o n f i g u r a t i o n , a n o u t p u t c o u p l i n g c a p a c i t o r ( c c ) i s r e q u i r e d t o b l o c k t h e d c b i a s a t t h e o u t p u t o f t h e a m p l i f i e r t h u s p r e v e n t i n g d c c u r r e n t s i n t h e l o a d . a s w i t h t h e i n p u t c o u p l i n g c a p a c i t o r , t h e o u t p u t c o u p l i n g c a p a c i t o r a n d i m p e d a n c e o f t h e l o a d f o r m a h i g h - p a s s f i l t e r g o v e r 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 : f c ( h i g h p a s s ) = 2 p r l c c ( 8 ) 1 f o r e x a m p l e , a 3 3 0 m f c a p a c i t o r w i t h a n 8 w s p e a k e r w o u l d a t t e n u a t e l o w f r e q u e n c i e s b e l o w 6 0 . 6 h z . t h e m a i n d i s - a d v a n t a g e o f p e r f o r m a n c e i s t h a t t h e l o a d i m p e d a n c e i s t y p i c a l l y s m a l l , w h i c h d r i v e s t h e l o w - f r e q u e n c y c o r n e r h i g h e r d e g r a d i n g t h e b a s s r e s p o n s e . l a r g e v a l u e s o f c c a r e r e q u i r e d t o p a s s l o w f r e q u e n c i e s i n t o t h e l o a d .
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 2 0 a p p l i c a t i o n i n f o r m a t i o n ( c o n t . ) 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 a p a 2 1 2 0 / 1 p r o v i d e p v d d a n d v d d t w o i n d e p e n d e n t p o w e r i n p u t s f o r u s e d . p v d d i s u s e d f o r p o w e r a m p l i f i e r o n l y a n d v d d i s u s e d f o r v o l u m e c o n t r o l a m p l i f i e r a n d i n t e r - n a l c i r c u i t e x c e p t i n g p o w e r a m p l i f i e r . t h e a p a 2 1 2 0 / 1 a r e 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 s 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 o t a l h a r m o n i c d i s t o r t i o n ( t h d ) i s 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 l s o p r e v e n t s t h e o s c i l l a t i o n s b e i n g c a u s e d b y l o n g l e a d l e n g t h b e t w e e n t h e a m p l i f i e r a n d t h e s p e a k e r . t h 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 d i f f e r e n t t y p e s o f c a p a c i t o r s t h a t t a r g e t o n d i f f e r - e n t 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 - 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 0 . 1 m f p l a c e d 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 v d d a n d p v d d l e a d w o r k s t h e b e s t . f o r f i l t e r i n g l o w e r - f r e q u e n c y n o i s e s i g n a l s , a l a r g e a l u m i n u m e l e c t r o l y t i c c a p a c i t o r o f 1 0 m f o r g r e a t e r p l a c e d n e a r t h e a u d i o p o w e r a m p l i f i e r i s r e c o m m e n d e d . o p t i m i z i n g d e p o p c i r c u i t r y c i r c u i t r y h a s b e e n i n c l u d e d i n t h e a p a 2 1 2 0 / 1 t o m i n i m i z e t h e a m o u n t o f p o p p i n g n o i s e a t p o w e r - u p a n d w h e n c o m - i n g o u t o f s h u t d o w n m o d e . p o p p i n g o c c u r s w h e n e v e r a v o l t a g e s t e p i s a p p l i e d t o t h e s p e a k e r . i n o r d e r t o e l i m i - n a t e c l i c k s a n d p o p s , a l l c a p a c i t o r s m u s t b e f u l l y d i s - c h a r g e d b e f o r e t u r n - o n . r a p i d o n / o f f s w i t c h i n g o f t h e d e - v i c e o r t h e s h u t d o w n f u n c t i o n w i l l c a u s e t h e c l i c k a n d p o p c i r c u i t r y . t h e v a l u e o f c i w i l l a l s o a f f e c t t u r n - o n p o p s . ( r e f e r t o e f f e c t i v e b y p a s s c a p a c i t a n c e ) t h e b y p a s s v o l t a g e s h o u l d r i s e s s l o w e r t h a n i n p u t b i a s v o l t a g e . a l t h o u g h t h e b y p a s s p i n c u r r e n t s o u r c e c a n n o t b e m o d i f i e d , t h e s i z e o f c b y p a s s c a n b e c h a n g e d t o a l t e r t h e d e v i c e t u r n - o n t i m e a n d t h e a m o u n t o f c l i c k s a n d p o p s . b y i n c r e a s i n g t h e v a l u e o f c b y p a s s , t u r n - o n p o p c a n b e r e d u c e d . h o w e v e r , t h e t r a d e o f f f o r u s i n g a l a r g e r b y p a s s c a p a c i t o r i s t o i n c r e a s e t h e t u r n - o n t i m e f o r t h i s d e v i c e . t h e r e i s a l i n e a r r e l a t i o n - s h i p b e t w e e n t h e s i z e o f c b y p a s s a n d t h e t u r n - o n t i m e . i n a s e c o n f i g u r a t i o n , t h e o u t p u t c o u p l i n g c a p a c i t o r , c c , i s o f p a r t i c u l a r c o n c e r n . t h i s c a p a c i t o r d i s c h a r g e s t h r o u g h t h e i n t e r n a l 1 0 k w r e s i s t o r s . d e p e n d i n g o n t h e s i z e o f c c , t h e t i m e c o n s t a n t c a n b e r e l a t i v e l y l a r g e . t o r e d u c e t r a n s i e n t s i n s e m o d e , a n e x t e r n a l 1 k w r e s i s t o r c a n b e p l a c e d i n p a r a l l e l w i t h t h e i n t e r n a l 1 0 k w r e s i s t o r . t h e t r a d e o f f f o r u s i n g t h i s r e s i s t o r i s a n i n c r e a s e i n q u i e s c e n t c u r r e n t . i n m o s t c a s e s , c h o o s - i n g a s m a l l v a l u e o f c i i n t h e r a n g e o f 0 . 3 3 m f t o 1 m f , c b b e i n g e q u a l t o 4 . 7 m f a n d a n e x t e r n a l 1 k w r e s i s t o r s h o u l d b e p l a c e d i n p a r a l l e l , a n d t h e i n t e r n a l 1 0 k w r e s i s t o r s h o u l d p r o d u c e a v i r t u a l l y c l i c k l e s s a n d p o p l e s s t u r n - o n . a h i g h g a i n a m p l i f i e r i n t e n s i f i e s t h e p r o b l e m a s t h e s m a l l d e l t a i n v o l t a g e i s m u l t i p l i e d b y t h e g a i n . s o i t i s a d v a n t a - g e o u s t o u s e l o w - g a i n c o n f i g u r a t i o n s . s h u t d o w n f u n c t i o n i n o r d e r t o r e d u c e p o w e r c o n s u m p t i o n w h i l e n o t i n u s e , t h e a p a 2 1 2 0 / 1 c o n t a i n a s h u t d o w n p i n t o e x t e r n a l l y t u r n o f f t h e a m p l i f i e r b i a s c i r c u i t r y . t h i s s h u t d o w n f e a t u r e t u r n s 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 p l a c e d o n t h e s h u t - d o w n p i n . t h e t r i g g e r p o i n t b e t w e e n a l o g i c h i g h a n d l o g i c l o w l e v e l i s t y p i c a l l y 2 . 0 v . i t i s b e s t t o s w i t c h b e - t w e e n t h e g r o u n d a n d t h e s u p p l y v d d t o p r o v i d e m a x i m u m d e v i c e p e r f o r m a n c e . 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 t o l o w , t h e a m p l i f i e r e n t e r s a l o w - c u r r e n t s t a t e , i d d < 5 0 m a . a p a 2 1 2 0 / 1 i s i n s h u t - d o w n m o d e , e x c e p t p c - b e e p d e t e c t c i r c u i t . u n d e r n o r - m a l o p e r a t i o n , s h u t d o w n p i n p u l l s t o h i g h l e v e l t o k e e p t h e i c o u t o f t h e s h u t d o w n m o d e . t h e s h u t d o w n p i n s h o u l d b e t i e d t o a d e f i n i t e v o l t a g e t o a v o i d u n w a n t e d s t a t e c h a n g i n g . i n p u t h p / l i n e o p e r a t i o n a p a 2 1 2 0 / 1 a m p l i f i e r s h a v e t w o s e p a r a t e i n p u t s f o r e a c h o f t h e l e f t a n d r i g h t s t e r e o c h a n n e l s . t h e a p a 2 1 2 0 a n d a p a 2 1 2 1 h a v e d i f f e r e n t c o n t r o l i n p u t b y s e / b t l a n d h p / l i n e , r e s p e c t i v e l y . a p a 2 1 2 0 i n t e r n a l m u l t i p l e x o r i s s e l e c t e d b y s e / b t l c o n - t r o l i n p u t . r e f e r t o t h e ? o u t p u t s e / b t l o p e r a t i o n ? , t h e v o l t - a g e d i v i d e r o f 1 0 0 k w a n d 1 k w s e t s t h e v o l t a g e a t t h e s e / b t l p i n t o b e a p p r o x i m a t e l y 5 0 m v w h e n n o p h o n e j a c k p l u g g e d i n t o t h e s y s t e m .
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 2 1 t o e n a b l e t h e h p ( h e a d p h o n e ) i n p u t s , s e t h p / l i n e p i n t o a h i g h l e v e l . a s a p a 2 1 2 1 , h p / l i n e i n p u t m u l t i p l e x o r a n d s e / b t l o u t - p u t o p e r a t i n g m o d e h a v e i n d e p e n d e n t c o n t r o l p a t h s , w h i c h c a n b e u s e d f o r m u l t i p l e a u d i o i n p u t s y s t e m . t h i s f u n c t i o n w i l l b e t h e s a m e a s a p a 2 1 2 0 w h e n h p / l i n e a n d s e / b t l a r e t i e d t o g e t h e r . t o s e l e c t t h e l i n e i n p u t s , s e t h p / l i n e p i n t o a l o w l e v e l . a p p l i c a t i o n i n f o r m a t i o n ( c o n t . ) i n p u t h p / l i n e o p e r a t i o n ( c o n t . ) t h i s l o g i c - l o w v o l t a g e a t t h e s e / b t l p i n m a k e s a p a 2 1 2 0 i n t o l i n e i n p u t m o d e o p e r a t i o n . i t b e c o m e s h p i n p u t m o d e w h e n p h o n e j a c k p l u g g e d . a n i n t e r n a l m u l t i p l e x o r s e l e c t s t h e i n p u t t o c o n n e c t t o t h e a m p l i f i e r b a s e d o n t h e s t a t e o f t h e h p / l i n e p i n o f t h e a p a 2 1 2 1 . p c - b e e p d e t e c t i o n a p a 2 1 2 0 / 1 i n t e g r a t e a b e e p d e t e c t c i r c u i t f o r n o t e b o o k p c . w h e n b e e p s i g n a l i s p r o v i d e d o n t h e p c b e e p i n p u t p i n , t h e b e e p m o d e i s a c t i v e . a p a 2 1 2 0 / 1 w i l l f o r c e t o b t l m o d e a n d t h e i n t e r n a l g a i n i s f i x e d a t - 1 0 d b . t h e p c b e e p s i g n a l b e c o m e s t h e a m p l i f i e r i n p u t s i g n a l a n d p l a y s o n t h e s p e a k e r w i t h o u t c o u p l i n g c a p a c i t o r . i t w i l l b e o u t o f s h u t d o w n m o d e w h e n e v e r b e e p m o d e i s e n a b l e d . a p a 2 1 2 0 / 1 w i l l r e t u r n t o p r e v i o u s s e t t i n g w h e n i t i s o u t o f b e e p m o d e . t h e i n p u t i m p e d a n c e i s 1 0 0 k w o n t h e p c b e e p i n p u t p i n . a p a 2 1 2 0 p r o v i d e e x t r a p c b e n c o n t r o l i n p u t s i g n a l t o f o r c e i c i n t o b e e p m o d e . t h e b e e p m o d e w i l l b e e n a b l e d w h e n p c b e n g o e s t o a h i g h l e v e l . w h e n t h e b e e p m o d e i s o v e r r i d d e n , t h e s i g n a l f r o m t h e p c b e e p w i l l p a s s t o s p e a k e r d i r e c t l y . c l o c k g e n e r a t o r a p a 2 1 2 0 / 1 i n t e g r a t e a c l o c k b l o c k t o a v o i d v o l u m e c o n - t r o l f u n c t i o n a b n o r m a l w h e n v o l u m e c o n t r o l s i g n a l w i t h s p i k e o r n o i s e . a p a 2 1 2 0 / 1 c h a n g e e a c h s t e p o f v o l u m e g a i n a f t e r f o u r c l o c k c y c l e s m a k e s u r e c o n t r o l s i g n a l r e a d y . i t p r o v i d e s 1 3 0 k h z f r e q u e n c y i f n o c a p a c i t o r i s p l a c e d o n c l k p i n t o t h e g r o u n d . t h e l a r g e r c a p a c i t a n c e w i l l s l o w d o w n t h e a n d c l o c k f r e q u e n c y . a c a p a c i t o r 3 3 n f b e t w e e n c l k t o t h e g r o u n d a n d w i l l g e n e r a t e 1 4 7 h z f r e q u e n c y o n t h e c l k p i n . b t l a m p l i f i e r e f f i c i e n c y a n e a s y - t o - u s e e q u a t i o n t o c a l c u l a t e e f f i c i e n c y s t a r t s o u t a s b e i n g e q u a l t o t h e r a t i o o f p o w e r f r o m t h e p o w e r s u p - p l y t o t h e p o w e r d e l i v e r e d t o t h e l o a d . t h e f o l l o w i n g e q u a t i o n s a r e t h e b a s i s f o r c a l c u l a t i n g a m p l i f i e r e f f i c i e n c y . w h e r e : p s u p e f f i c i e n c y = ( 9 ) p o p o = = r l v o r m s x v o r m s 2 r l v p x v p v o r m s = ? 2 v p ( 1 0 ) ( 1 1 ) p s u p = v d d x i d d a v g = v d d x 2 v p p r l t a b l e 1 c a l c u l a t e s e f f i c i e n c i e s f o r f o u r d i f f e r e n t o u t p u t p o w e r l e v e l s . n o t e t h a t t h e e f f i c i e n c y o f t h e a m p l i f i e r i s q u i t e l o w f o r l o w e r p o w e r l e v e l s a n d r i s e s s h a r p l y a s p o w e r t o t h e l o a d i s i n c r e a s e d r e s u l t i n g i n a n e a r l y f l a t i n t e r n a l p o w e r d i s s i - p a t i o n o v e r t h e n o r m a l o p e r a t i n g r a n g e . n o t e t h a t t h e i n - t e r n a l d i s s i p a t i o n a t f u l l o u t p u t p o w e r i s l e s s t h a n t h e d i s s i p a t i o n i n t h e h a l f p o w e r r a n g e . c a l c u l a t i n g t h e e f f i - c i e n c y f o r a s p e c i f i c s y s t e m i s t h e k e y t o p r o p e r p o w e r s u p p l y d e s i g n . f o r a s t e r e o 1 w a u d i o s y s t e m w i t h 8 w l o a d s a n d a 5 v s u p p l y , t h e m a x i m u m d r a w o n t h e p o w e r s u p p l y i s a l m o s t 3 w . a f i n a l p o i n t t o r e m e m b e r a b o u t l i n e a r a m p l i f i e r s ( e i t h e r s e o r b t l ) i s h o w t o m a n i p u l a t e t h e t e r m s i n t h e e f f i - c i e n c y e q u a t i o n t o a n u t m o s t a d v a n t a g e w h e n p o s s i b l e . n o t e t h a t i n e q u a t i o n , v d d i s i n t h e d e n o m i n a t o r . t h i s i n d i - c a t e s t h a t a s v d d g o e s d o w n , e f f i c i e n c y g o e s u p . i n o t h e r w o r d s , u s e t h e e f f i c i e n c y a n a l y s i s t o c h o o s e t h e c o r r e c t s u p p l y v o l t a g e a n d s p e a k e r i m p e d a n c e f o r t h e a p p l i c a t i o n . po (w) efficiency (%) i dd (a) v pp (v) p d (w) 0.25 31. 25 0.16 2.00 0.55 0.50 47.62 0.21 2.83 0.55 1.00 66.67 0.30 4.00 0.5 1.25 78.13 0.32 4.47 0. 35 * * h i g h p e a k v o l t a g e s c a u s e t h e t h d t o i n c r e a s e . t a b l e 1 . e f f i c i e n c y v s o u t p u t p o w e r i n 5 - v / 8 w b t l s y s t e m s
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 2 2 p o w e r d i s s i p a t i o n w h e t h e r t h e p o w e r a m p l i f i e r i s o p e r a t e d i n b t l o r s e m o d e s , p o w e r d i s s i p a t i o n i s a m a j o r c o n c e r n . e q u a t i o n 1 3 s t a t e s t h e m a x i m u m p o w e r d i s s i p a t i o n p o i n t f o r a s e m o d e o p e r a t i n g a t a g i v e n s u p p l y v o l t a g e a n d d r i v i n g a s p e c i f i e d l o a d . i n b t l m o d e o p e r a t i o n , t h e o u t p u t v o l t a g e s w i n g i s d o u b l e d a s i n s e m o d e . t h u s , t h e m a x i m u m p o w e r d i s - s i p a t i o n p o i n t f o r a b t l m o d e o p e r a t i n g a t t h e s a m e g i v e n c o n d i t i o n s i s 4 t i m e s a s i n s e m o d e . s i n c e t h e a p a 2 1 2 0 / 1 a r e d u a l c h a n n e l p o w e r a m p l i f i e r s , t h e m a x i m u m i n t e r n a l p o w e r d i s s i p a t i o n i s 2 t i m e s t h a t b o t h o f e q u a t i o n s d e p e n d o n t h e m o d e o f o p e r a t i o n . e v e n t h i s s u b s t a n t i a l i n c r e a s e i n p o w e r d i s s i p a t i o n , t h e a p a 2 1 2 0 / 1 d o n o t r e q u i r e e x t r a h e a t s i n k . t h e p o w e r d i s - s i p a t i o n f r o m e q u a t i o n 1 4 , a s s u m i n g a 5 v - p o w e r s u p p l y a n d a n 8 w l o a d , m u s t n o t b e g r e a t e r t h a n t h e p o w e r d i s - s i p a t i o n t h a t r e s u l t s f r o m t h e e q u a t i o n 1 5 : f o r t s s o p - 2 4 p a c k a g e w i t h t h e r m a l p a d , t h e t h e r m a l r e s i s t a n c e ( q j a ) i s e q u a l t o 4 5 o c / w . s i n c e t h 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 ( t j , m a x ) o f a p a 2 1 2 0 / 1 a r e 1 5 0 o c a n d t h e a m b i e n t t e m p e r a t u r e ( t a ) a r e d e f i n e d b y t h e p o w e r s y s t e m d e s i g n , t h e m a x i m u m p o w e r d i s s i p a t i o n w h i c h t h e i c p a c k a g e i s a b l e t o h a n d l e c a n b e o b t a i n e d f r o m e q u a t i o n 1 6 . t h e r m a l p a d c o n s i d e r a t i o n f o r g o o d t h e r m a l c o n d u c t i o n , t h e v i a s m u s t b e p l a t e d t h r o u g h a n d s o l d e r f i l l e d . t h e c o p p e r p l a n e u s e d t o c o n - d u c t h e a t a w a y f r o m t h e t h e r m a l p a d s h o u l d b e a s l a r g e a s p r a c t i c a l . i f t h e a m b i e n t t e m p e r a t u r e i s h i g h e r t h a n 2 5 c , a l a r g e r c o p p e r p l a n e o r f o r c e d - a i r c o o l i n g w i l l b e r e q u i r e d t o k e e p t h e a p a 2 1 2 0 / 1 j u n c t i o n t e m p e r a t u r e b e l o w t h e t h e r m a l s h u t d o w n t e m p e r a t u r e ( 1 5 0 c ) . i n h i g h e r a m b i e n t t e m p e r a t u r e , h i g h e r a i r f l o w r a t e a n d / o r l a r g e r c o p p e r a r e a w i l l b e r e q u i r e d t o k e e p t h e i c o u t o f t h e t h e r m a l s h u t d o w n . t h e t h e r m a l p a d o n t h e b o t t o m o f t h e a p a 2 1 2 0 / 1 s h o u l d b e s o l d e r e d d o w n t o a c o p p e r p a d o n t h e c i r c u i t b o a r d . h e a t c a n b e c o n d u c t e d a w a y f r o m t h e t h e r m a l p a d t h r o u g h t h e c o p p e r p l a n e t o a m b i e n t . i f t h e c o p p e r p l a n e i s n o t o n t h e t o p s u r f a c e o f t h e c i r c u i t b o a r d , 8 t o 1 0 v i a s o f 1 3 m i l o r s m a l l e r i n d i a m e t e r s h o u l d b e u s e d t o t h e r m a l l y c o u p l e t h e t h e r m a l p a d t o t h e b o t t o m p l a n e . a p p l i c a t i o n i n f o r m a t i o n ( c o n t . ) s e m o d e : p d , m a x = ( 1 3 ) v d d 2 p r l 2 2 b t l m o d e : p d , m a x = ( 1 4 ) 4 v d d 2 p r l 2 2 t j , m a x - t a q j a p d , m a x = ( 1 5 ) o n c e t h e p o w e r d i s s i p a t i o n i s g r e a t e r t h a n t h e m a x i m u m l i m i t ( p d , m a x ) , e i t h e r t h e s u p p l y v o l t a g e ( v d d ) m u s t b e d e c r e a s e d , t h e l o a d i m p e d a n c e ( r l ) m u s t b e i n c r e a s e d o r t h e a m b i e n t t e m p e r a t u r e s h o u l d b e r e d u c e d . t h e t h e r m a l p a d m u s t b e c o n n e c t e d t o t h e g r o u n d . t h e p a c k a g e w i t h t h e r m a l p a d o f t h e a p a 2 1 2 0 / 1 r e q u i r e s p e - c i a l a t t e n t i o n o n t h e r m a l d e s i g n . i f t h e t h e r m a l d e s i g n i s s u e s a r e n o t p r o p e r l y a d d r e s s e d , t h e a p a 2 1 2 0 / 1 4 w w i l l g o i n t o t h e r m a l s h u t d o w n w h e n d r i v i n g a 4 w l o a d .
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 2 3 p a c k a g e i n f o r m a t i o n t s s o p - 2 4 p note : 1. followed from jedec mo-153 adt. 2. dimension "d" does not include mold flash, protrusions or gate burrs. mold flash, protrusion or gate burrs shall not exceed 6 mil per side. 3. dimension "e1" does not include inter-lead flash or protrusions. inter-lead flash and protrusions shall not exceed 10 mil per side. s y m b o l min. max. 1.20 0.05 0.09 0.20 7.70 7.9 0.15 a a1 c d e e l millimeters b 0.19 0.30 0.65 bsc tssop-24p 0.45 0.75 0.026 bsc min. max. inches 0.047 0.002 0.007 0.012 0.004 0.008 0.303 0.311 0.169 0.177 0.018 0.030 0 0.006 a2 0.80 1.05 4.30 4.50 e1 0.031 0.041 3.50 d1 0.138 e2 2.50 0.098 6.00 3.50 0.197 0.138 inches 8 o 0 o 8 o 0 o 0 view a 0 . 2 5 seating plane gauge plane see view a e 1 e b c a 2 a e a 1 l e 2 exposed pad d1 d 6.20 6.60 0.244 0.260
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 2 4 application a h t1 c d d w e1 f 330.0 ? 2.00 50 min. 16.4+2.00 - 0.00 13.0+0.50 - 0.20 1.5 min. 20.2 min. 16.0 ? 0.30 1.75 ? 0.10 7.50 ? 0.10 p 0 p1 p 2 d 0 d1 t a 0 b 0 k 0 tssop - 24p 4.00 ? 0.10 8.00 ? 0.10 2.00 ? 0.10 1.5+0.10 - 0.00 1.5 min. 0.6+0. 00 - 0.40 6.9 ? 0.20 8.30. ? 0.20 1.50 ? 0.20 (mm) c a r r i e r t a p e & r e e l d i m e n s i o n s package type unit quantity tssop - 24 p tape & reel 2000 d e v i c e s p e r u n i t a e 1 a b w f t p0 od0 b a0 p2 k0 b 0 section b-b section a-a od1 p1 h t1 a d
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 2 5 test item method description solderability mil - std - 883d - 2003 245 c, 5 sec holt mil - std - 883d - 1005.7 1000 hrs bias @125 c pct jesd - 22 - b,a102 168 hrs, 100 % rh, 121 c tst mil - std - 883d - 1011.9 - 65 c~150 c, 200 cycles esd mil - std - 883d - 3015.7 vhbm > 2kv, vmm > 200v latch - up jesd 78 10ms, 1 tr > 100ma r e f l o w c o n d i t i o n ( i r / c o n v e c t i o n o r v p r r e f l o w ) t 25 c to peak tp ramp-up t l ramp-down ts preheat tsmax tsmin t l t p 25 t e m p e r a t u r e time critical zone t l to t p r e l i a b i l i t y t e s t p r o g r a m t a p i n g d i r e c t i o n i n f o r m a t i o n t s s o p - 2 4 p user direction of feed
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 2 - o c t . , 2 0 0 8 a p a 2 1 2 0 / 2 1 2 1 w w w . a n p e c . c o m . t w 2 6 c l a s s i f i c a t i o n r e f l o w p r o f i l e s profile feature sn - pb eutectic assembly pb - free assembly average ramp - up rate (t l to t p ) 3 c/second max. 3 c/second max. preheat - temperature min (tsmin) - temperature max (tsmax) - time (min to max) (ts) 100 c 150 c 60 - 120 seconds 150 c 200 c 60 - 180 seconds time maintained above: - temperature (t l ) - time (t l ) 183 c 60 - 150 seconds 217 c 60 - 150 seconds peak /classification temperature (tp) see table 1 see table 2 time within 5 c of actual peak temperature (tp) 10 - 30 seconds 20 - 40 seconds ramp - down rate 6 c/sec ond max. 6 c/second max. time 25 c to peak temperature 6 minutes max. 8 minutes max. note: all temperatures refer to topside of the package. measured on the body surface. table 2. pb - free process ? package classification reflow temperatures package thickness volume mm 3 <350 volume mm 3 350 - 2000 volume mm 3 >2000 <1.6 mm 260 +0 c* 260 +0 c* 260 +0 c* 1.6 mm ? 2.5 mm 260 +0 c* 250 +0 c* 245 +0 c* 3 2.5 mm 250 +0 c* 245 +0 c* 245 +0 c* * tolerance: the device manufacturer/supplier shall assure process compatibility up to and including the stated classification temperature (this means peak reflow temperature +0 c. for example 260 c+0 c) at the rated msl level. c u s t o m e r s e r v i c e table 1. snpb eutectic process ? package peak reflow temperature s package thickness volume mm 3 <350 volume mm 3 3 350 <2.5 mm 240 +0/ - 5 c 225 +0/ - 5 c 3 2.5 mm 225 +0/ - 5 c 225 +0/ - 5 c a n p e c e l e c t r o n i c s c o r p . head office : no.6, dusing 1st road, sbip, hsin-chu, taiwan, r.o.c. tel : 886-3-5642000 fax : 886-3-5642050 t a i p e i b r a n c h : 2 f , n o . 1 1 , l a n e 2 1 8 , s e c 2 j h o n g s i n g r d . , s i n d i a n c i t y , t a i p e i c o u n t y 2 3 1 4 6 , t a i w a n t e l : 8 8 6 - 2 - 2 9 1 0 - 3 8 3 8 f a x : 8 8 6 - 2 - 2 9 1 7 - 3 8 3 8

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