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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 - j u l . , 2 0 0 5 a p a 2 0 6 8 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 . 6 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 ) f e a t u r e s l o w o p e r a t i n g c u r r e n t w i t h 9 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 . 6 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 ( 1 m a ) s h o r t c i r c u i t p r o t e c t i o n 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 a n d o v e r c u r r e n t p r o t e c t i o n c i r c u i t r y m a x i m u m o u t p u t s w i n g c l a m p i n g f u n c t i o n s o p - 1 6 - p p a c k a g e s w i t h 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 v a i l a b l e ( r o h s c o m p l i a n t ) 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 a p a 2 0 6 8 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 c a p a b l e o f p r o d u c i n g 2 . 6 w ( 1 . 8 w ) i n t o 4 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 0 6 8 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 0 6 8 , t h a t 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 0 6 8 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 . n o t e b o o k p c l c d m o n i t o r o r t v apa2068 handling code temp. range package code package code ka : sop-16-p operating ambient temp. range i : - 40 to 85 c handling code tu : tube tr : tape & reel lead free code l : lead free device blank : original device apa2068 ka : apa2068 xxxxx xxxxx - date code lead free code 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 d c o m p a t i b l e w i t h b o t h s n p b a n d l e a d - f r e e s o l d i e r i n g o p e r a t i o n 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 .
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 2 b l o c k d i a g r a m ( 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, shutdown, mute - 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* 1 c t stg stor age temperature range - 65 to +150 c t s soldering temperature,10 seconds 260 c v esd electrostatic discharge - 3000 to 3000* 2 - 200 to 200* 3 v 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 s : 1 . a p a 2 0 6 8 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 2 . h u m a n b o d y m o d e l : c = 1 0 0 p f , r = 1 5 0 0 w , 3 p o s i t i v e s p u l s e p l u s 3 n e g a t i v e p u l s e s 3 . m a c h i n e m o d e l : c = 2 0 0 p f , l = 0 . 5 m f , 3 p o s i t i v e p u l s e s p l u s 3 n e g a t i v e p u l s e s shutdown ckt power and depop circuit se/btl lout+ lout- lin- se/btl shutdown bypass mute mute volume control volume apa2068_block rout+ rin- bypass rout- gnd vdd volmax min. max. unit supply voltage, v dd 4.5 5.5 v shutdown , mute 2 high level threshold voltage, v ih se/btl 4 v shutdown, mute 1.0 low level threshold voltage, v il se/btl 3 v common mode input voltage, v icm v dd - 1.0 v 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
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 3 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 apa20 68 symbol parameter test condition min. typ. max. unit v dd supply voltage 4.5 5.5 v se/btl=0v 9 2 0 i dd supply current se/btl=5v 4 1 0 ma i sd supply current in shutdown mode se/btl= 0 v shutdown=0v 1 m a i ih high input current 900 na i il low input current 900 na v os output differential voltage 5 mv symbol apa20 68 unit parameter test condition min. typ. max. p o thd=10%, r l =3 w , fin=1khz 2. 9 thd=10%, r l =4 w , fin=1khz 2 . 6 thd=10%, r l =8 w , fin=1khz 1. 6 thd=1%, r l =3 w , fin=1khz 2. 4 thd=1%, r l =4 w , fin=1khz 1. 8 maximum output power thd=0.5%, r l =8 w , fin=1khz 1 1. 3 w thd+n p o =1. 2 w, r l =4 w , fin=1khz 0.07 total harmonic distortion plus noise p o = 0.9 w, r l =8 w , fin=1khz 0.08 % psrr power ripple rejection ratio v in =0.1vrms, r l =8 w , c b =1 m f, fin=120hz 60 db xtalk channel separation c b =1 m f, r l =8 w , fin=1khz 90 db s/n signal to noise ratio p o =1.1w, r l =8 w , a_wieght 95 db symbol parameter value unit r thja thermal resistance from junction to ambient in free air sop - 16 - p 45 c /w 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 , g a i n = 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 - j u l . , 2 0 0 5 a p a 2 0 6 8 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 . ) 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 , 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 ) apa20 68 symbol parameter test condition min. typ. max. unit thd=10%, r l =16 w , fin=1khz 220 thd=10%, r l =32 w , fin=1khz 1 2 0 thd=1%, r l =16 w , fin=1khz 160 p o maximum output power thd=1%, r l =32 w , fin=1khz 9 5 mw p o =125mw, r l =16 w , fin=1khz 0.09 thd+n total harmonic dist ortion plus noise p o =65mw, r l =32 w , fin=1khz 0.09 % psrr power ripple rejection ratio v in =0.1vrms, r l =8 w , c b =1 m f, fin=120hz 60 db xtalk channel separation c b =1 m f, r l =32 w , fin=1khz 60 db s/n signal to noise rati o p o =75mw, se, r l =32 w , a_wieght 100 db p i n d e s c r i p t i o n bypass 4 13 se/btl volmax 8 gnd 5 15 vdd lin- 6 12 gnd shutdown 2 14 rout+ rin- 3 16 rout- 11 lout+ 10 vdd volume 7 mute 1 9 lout- apa2068 ? thermal pad (connected to gnd for better heat dissipation) p i n f u n c t i o n d e s c r i p t i o n pin no. name config function description 1 mute i mute control signal input, hold low for normal operation, hold high to mute. 2 shutdown i it will be into shutdown mode when pull low. i sd = 1 m a 3 rin - i right channel input terminal 4 bypass i bias voltage generator 5,12 gnd - ground connection, connected to thermal pad. 6 lin - i left channel input terminal 7 volume i input signal for internal volume gain setting. 8 volmax i setting the maximum output swing. input a non - zero voltage (v c ) to this pin, the output voltage swing will be clamped between v oh (the maximum positive v alue ) - v c & v ol (the minimum negative v alue ) + v c . disable this function when tie this pin to gnd. maximum input voltage 1/2 vdd.
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 5 pin no. name config function description 9 lout - o left channel positive output in btl mode and se mode. 10,15 vdd - supply voltage 11 lout+ o left channel negative output in btl mode and high impedance in se mode. 13 se/btl i output mode control i nput, high for se output mode and low for btl mode. 14 rout+ o right channel negative output in btl mode and high impedance in se mode. 16 rout - o right channel positive output in btl mode and se mode. p i n f u n c t i o n d e s c r i p t i o n ( c o n t . ) shutdown mute se/btl operating mode l x x shutdown mode h l l btl out h l h se out h h x mute c o n t r o l i n p u t t a b l e 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 se/btl signal 4 w 4 w ring headphone jack sleeve control pin tip se/btl signal 1 m f 220 m f 220 m f 1k w 1k w r-ch input vdd 100k w shutdown signal 1 m f l-ch input vdd vdd gnd 100 m f 0.1 m f 100k w shutdown ckt se/btl lout+ lout- lin- se/btl shutdown bypass mute mute volume control volume a2068_appckt rout+ rin- bypass rout- volmax mute signal vdd 50k w volmax signal 2.2 m f
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 7 t y p i c a l c h a r a c t e r i s t i c s thd+n (%) o u t p u t p o w e r ( w ) o u t p u t p o w e r ( w ) thd+n (%) o u t p u t p o w e r ( w ) o u t p u t p o w e r ( w ) thd+n (%) thd+n (%) 0.01 10 0.1 1 0 3.5 0.5 1 1.5 2 2.5 3 v dd = 5v av =20db f = 1khz btl r l = 8 w r l = 4 w r l = 3 w 0.01 10 0.1 1 0 240m 40m 80m 120m 160m 200m v dd = 5v av =14db f = 1khz se r l = 32 w r l = 16 w 0.01 10 0.1 1 0 3.5 0.5 1 1.5 2 2.5 3 v dd = 5v f =1khz r l =3 w btl av = 20db av = 6db 0.05 10 0.1 1 10m 5 100m 1 v dd = 5v av =20db r l =3 w btl f = 20khz f = 20hz f = 1khz t h d + n v s . o u t p u t p o w e r t h d + n v s . o u t p u t p o w e r t h d + n v s . o u t p u t p o w e r t h d + n v s . o u t p u t p o w e r
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 8 t y p i c a l c h a r a c t e r i s t i c s ( c o n t . ) thd+n (%) thd+n (%) o u t p u t p o w e r ( w ) o u t p u t p o w e r ( w ) thd+n (%) thd+n (%) f r e q u e n c y ( h z ) f r e q u e n c y ( h z ) 0.01 10 0.1 1 20 20k 100 1k 10k v dd = 5v r l =3 w po = 1.8w btl av = 20db av = 6db 0.01 10 0.1 1 20 20k 100 1k 10k v dd = 5v av = 6db r l =3 w btl po = 0.9w po = 1.8w 0.01 10 0.1 1 0 3.5 0.5 1 1.5 2 2.5 3 v dd = 5v f =1khz r l =4 w btl av = 20db av = 6db 0.01 10 0.1 1 10m 5 100m 1 v dd = 5v av =20db r l =4 w btl f = 20khz f = 20hz f = 1khz t h d + n v s . o u t p u t p o w e r t h d + n v s . o u t p u t p o w e r t h d + n v s . f r e q u e n c y t h d + n v s . f r e q u e n c y
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 9 t y p i c a l c h a r a c t e r i s t i c s ( c o n t . ) thd+n (%) thd+n (%) o u t p u t p o w e r ( w ) o u t p u t p o w e r ( w ) thd+n (%) thd+n (%) f r e q u e n c y ( h z ) f r e q u e n c y ( h z ) 0.01 10 0.1 1 20 20k 100 1k 10k v dd = 5v r l =4 w po=1.5w btl av = 20db av = 6db 0.01 10 0.1 1 20 20k 100 1k 10k v dd = 5v av= 6db r l =4 w btl po = 0.8w po = 1.5w 0.01 10 0.1 1 0 3.5 0.5 1 1.5 2 2.5 3 av = 20db av = 6db v dd = 5v f= 1khz r l =8 w btl 0.01 10 0.1 1 10m 5 100m 1 f = 20khz f = 20hz f = 1khz v dd = 5v av = 20db r l =8 w btl t h d + n v s . o u t p u t p o w e r t h d + n v s . o u t p u t p o w e r t h d + n v s . f r e q u e n c y t h d + n v s . f r e q u e n c y
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 1 0 t y p i c a l c h a r a c t e r i s t i c s ( c o n t . ) thd+n (%) thd+n (%) o u t p u t p o w e r ( w ) o u t p u t p o w e r ( w ) thd+n (%) thd+n (%) f r e q u e n c y ( h z ) f r e q u e n c y ( h z ) 0.01 10 0.1 1 20 20k 100 1k 10k po = 0.5w v dd = 5v av = 6db r l =8 w btl po = 0.9w 0.01 10 0.1 1 20 20k 100 1k 10k av = 6db av = 20db v dd =5v r l =8 w po=0.9w btl 0.01 10 0.1 1 0 240m 40m 80m 120m 160m 200m v dd =5v f=1khz r l =16 w se av = 0db av = 14db 0.01 10 0.1 1 10m 300m 50m 100m 200m v dd =5v av=14db r l =16 w co=1000 m f se f = 20khz f = 1khz f = 20hz t h d + n v s . o u t p u t p o w e r t h d + n v s . o u t p u t p o w e r t h d + n v s . f r e q u e n c y t h d + n v s . f r e q u e n c y
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 1 1 t y p i c a l c h a r a c t e r i s t i c s ( c o n t . ) thd+n (%) thd+n (%) o u t p u t p o w e r ( w ) o u t p u t p o w e r ( w ) thd+n (%) thd+n (%) f r e q u e n c y ( h z ) f r e q u e n c y ( h z ) 0.01 10 0.1 20 20k 100 1k 10k v dd =5v r l =16 w po=125mw co=1000 m f se av = 0db 1 av = 14db 0.01 10 0.1 1 20 20k 100 1k 10k v dd =5v av=0db r l =16 w co=1000 m f se po = 125mw po = 60mw 0.01 10 0.1 1 0 240m 40m 80m 120m 160m 200m v dd =5v f=1khz r l =32 w se av = 0db av = 14db 0.01 10 0.1 1 10m 300m 50m 100m 200m v dd =5v av=14db r l =32 w co=1000 m f se f = 20hz f = 1khz f = 20khz t h d + n v s . o u t p u t p o w e r t h d + n v s . o u t p u t p o w e r t h d + n v s . f r e q u e n c y t h d + n v s . f r e q u e n c y
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 1 2 t y p i c a l c h a r a c t e r i s t i c s ( c o n t . ) thd+n (%) thd+n (%) amplitude(db) f r e q u e n c y ( h z ) f r e q u e n c y ( h z ) f r e q u e n c y ( h z ) f r e q u e n c y ( h z ) amplitude(db) phase(degress) phase(degress) 0.01 10 0.1 1 20 20k 100 1k 10k v dd =5v r l =32 w po=65mw co=1000 m f se av = 0db av = 14db 0.01 10 0.1 1 20 20k 100 1k 10k v dd =5v av=14db r l =32 w co=1000 m f se po = 65mw po = 30mw +160 +330 +170 +180 +190 +300 +310 +320 +0 +20 +4 +8 +12 +16 10 200k 100 1k 10k 100k phase( 6db) amplitude( 20db) amplitude( 6db) phase( 20db) v dd =5v r l =4 w po=0.8w btl +160 +330 +170 +180 +190 +300 +310 +320 +0 +20 +4 +8 +12 +16 10 200k 100 1k 10k 100k amplitude( 20db) phase( 20db) phase( 6db) amplitude( 6db) v dd =5v r l =8 w po=0.5w btl t h d + n v s . f r e q u e n c y t h d + n v s . f r e q u e n c y f r e q u e n c y r e s p o n s e f r e q u e n c y r e s p o n s e
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 1 3 t y p i c a l c h a r a c t e r i s t i c s ( c o n t . ) amplitude(db) f r e q u e n c y ( h z ) f r e q u e n c y ( h z ) f r e q u e n c y ( h z ) f r e q u e n c y ( h z ) amplitude(db) phase(degress) phase(degress) crosstalk(db) crosstalk(db) +120 +300 +140 +160 +180 +200 +220 +240 +260 +280 -10 +14 -6 -2 +2 +6 +10 20 200k 100 1k 10k 100k amplitude(14db) phase(14db) v dd =5v r l =16 w co=1000 m f po=60mw se amplitude(0db) phase(0db) +165 +220 +170 +180 +190 +200 +210 -10 +14 -6 -2 +2 +6 +10 20 200k 100 1k 10k 100k amplitude(14db) amplitude(0db) phase(14db) phase(0db) v dd =5v r l =32 w co=1000 m f po=30mw se -120 +0 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 20 20k 100 1k 10k v dd =5v r l =8 w po=0.9 w btl right to left left to right -120 +0 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 20 20k 100 1k 10k right to left left to right v dd =5v r l =4 w po=1.5 w btl f r e q u e n c y r e s p o n s e f r e q u e n c y r e s p o n s e c r o s s t a l k v s . f r e q u e n c y c r o s s t a l k v s . f r e q u e n c y
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 1 4 t y p i c a l c h a r a c t e r i s t i c s ( c o n t . ) output noise voltage(v) f r e q u e n c y ( h z ) f r e q u e n c y ( h z ) f r e q u e n c y ( h z ) f r e q u e n c y ( h z ) output noise voltage(v) crosstalk(db) crosstalk(db) -100 +0 -90 -80 -70 -60 -50 -40 -30 -20 -10 20 20k 100 1k 10k right to left left to right v dd =5v r l =16 w co=1000 m f po=125mw se -100 +0 -80 -60 -40 -20 20 20k 100 1k 10k -10 -30 -50 -70 -90 v dd =5v r l =32 w co=1000 m f po=65mw se right to left left to right 1u 100u 10u 20u 20 20k 100 1k 10k v dd =5v av=6db r l =4 w btl a-weight filter bw<22khz 1u 100u 10u 20u 20 20k 100 1k 10k filter bw<22khz a-weight v dd =5v av=0db r l =32 w se c r o s s t a l k v s . f r e q u e n c y c r o s s t a l k v s . f r e q u e n c y o u t p u t n o i s e v o l t a g e v s . f r e q u e n c y o u t p u t n o i s e v o l t a g e v s . f r e q u e n c y
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 1 5 t y p i c a l c h a r a c t e r i s t i c s ( c o n t . ) mute attenuation(db) f r e q u e n c y ( h z ) f r e q u e n c y ( h z ) f r e q u e n c y ( h z ) f r e q u e n c y ( h z ) shutdown attenuation(db) psrr(db) psrr(db) -100 +0 -90 -80 -70 -60 -50 -40 -30 -20 -10 20 20k 100 1k 10k v dd =5v r l =4 w vin=200mv av=20db btl -100 +0 -90 -80 -70 -60 -50 -40 -30 -20 -10 20 20k 100 1k 10k v dd =5v r l =32 w vin=200mv av=14db se -130 +0 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 20 20k 100 1k 10k t v dd =5v r l =8 w vin=1v rms av=6db btl -120 +0 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 20 20k 100 1k 10k v dd =5v r l =8 w vin=1v rms av=6db btl p s r r v s . f r e q u e n c y p s r r v s . f r e q u e n c y m u t e a t t e n u a t i o n v s . f r e q u e n c y s h u t d o w n a t t e n u a t i o n v s . f r e q u e n c y
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 1 6 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 up down v dd =5v no load btl t y p i c a l c h a r a c t e r i s t i c s ( c o n t . ) power dissipation(w) d c v o l u m e ( v ) 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 ) gain (db) supply current(ma) power dissipation(w) o u t p u t p o w e r ( w ) 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 3.0 3.5 4.0 4.5 5.0 5.5 btl se no load 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0.00 0.50 1.00 1.50 2.00 2.50 r l =3 w r l =4 w r l =8 w v dd =5v thd<1% btl 0 20 40 60 80 100 120 140 160 180 200 0 50 100 150 200 250 r l =8 w r l =32 w r l =16 w v dd =5v thd<1% se p o w e r d i s s i p a t i o n v s . o u t p u t p o w e r p o w e r d i s s i p a t i o n v s . o u t p u t p o w e r 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 g a i n v s . d c v o l u m e v o l t a g e
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 1 7 vbias circuit out+ out- rl op1 op2 volume control amplifier output signal a p p l i c a t i o n d e s c r i p t i o n s b t l o p e r a t i o n t h e a p a 2 0 6 8 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 . 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 i n p u t a u d i o s i g n a l i s c o m e f r o m 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 w i t h 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 a s b r i d g e d m o d e i s e s t a b l i s h e d . 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 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 . f o u r t i m e s t h e o u t p u t p o w e r i s p o s s i b l e a s c o m p a r e d f i g u r e 1 : a p a 2 0 6 8 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 ) c b y p a s s x 1 2 5 k w 1 1 r i c i << 1 r l c c ( 1 ) t o a s e a m p l i f i e r 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 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 0 6 8 , 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 , n o n e e d d c v o l t a g e e x i s t s 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 . 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 y 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 : o u t p u t s e / b t l o p e r a t i o n t h e a b i l i t y o f t h e a p a 2 0 6 8 t o e a s i l y s w i t c h b e t w e e n b t l a n d s e m o d e s i s o n e o f i t s m o s t i m p o r t a n t c o s t s s a v i n g f e a t u r 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 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 . i n t e r n a l t o t h e a p a 2 0 6 8 , 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 o n a n d t h e a p a 2 0 6 8 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
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 1 8 a p p l i c a t i o n d e s c r i p t i o n s ( c o n 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 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 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 dc volume (v) gain (db) backward forward apa2068 dc volume control curve (btl) 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 0 6 8 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 . 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 o r 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 a p p l i c a t i o n c i r c u i t . 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 f o l l o w s : 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 h i g h , 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 c a u s i n g t h e s p e a k e r t o m u t e . t h e o u t + a m p l i f i e r t h e n 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 o ) 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 n e c t e d f r o m t h e s i g n a l p i n , 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 . v o l u m e c o n t r o l f u n c t i o n a p a 2 0 6 8 h a s 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 w h o s e s e t t i n g i s a 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 0 6 8 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 o u t p u t s e / b t l o p e r a t i o n ( c o n t . ) 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 , a s s h o w n i n v o l u m e c o n t r o l g r a p h . f o r 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 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 i s 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 0 6 8 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 . r f r i ( 3 ) b t l g a i n = - 2 x s e g a i n = r f r i ( 2 ) a 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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 1 9 ri vs gain(btl) 0 20 40 60 80 100 120 -40 -30 -20 -10 0 10 20 gain(db) ri(k w ) a p p l i c a t i o n d e s c r i p t i o n s ( c o n t . ) 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 i n p u t c a p a c i t o r , c i 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 e q u a t i o n : 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 . 1 2 p x 1 0 k w x c i ( 4 ) 1 2 p x 1 0 k w x f c ( 5 ) f c ( h i g h p a s s ) = c i = 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 0 6 8 g e n e r a t e s e a c h i n p u t r e s i s t a n c e o n 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 p r o c e s s v a r i a t i o n . i n p u t r e s i s t a n c e , r i ( c o n 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 f o l l o w : c o n s i d e r t o i n p u t r e s i s t a n c e v a r i a t i o n , t h e c i i s 0 . 1 6 m f s o o n e w o u l d l i k e l y c h o o s e a v a l u e i n t h e r a n g e 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 t 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 0 6 8 . 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 . t o a v o i d s t a r t - u p p o p n o i s e o c c u r r e d , 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
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 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 d e s c r i p t i o n s ( c o n t . ) 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 s t a r t u p = 5 x ( c b y p a s s x 1 2 5 k w ) ( 7 ) f c ( h i g h p a s s ) = 2 p r l c c ( 8 ) 1 m a i n t a i n e d . t h e b y p a s s c a p a c i t o r i s f e d t h r u 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 : 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 e q u a t i o n . 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 , f r o m a p e r f o r m a n c e s t a n d p o i n t , i s 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 . 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 0 6 8 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 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 c a u s i n g b y 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 ( c o n t . ) 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 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 t y p e 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 - 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 l e a d w o r k s 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 0 6 8 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 r a m p u p s h o u l d b e 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 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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 2 1 a p p l i c a t i o n d e s c r i p t i o n s ( c o n t . ) 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 t h e 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 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 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 0 6 8 c o n t a i n s 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 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 < 1 m a . a p a 2 0 6 8 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 . o n n o r m a l o p e r a t i n g , s h u t d o w n p i n p u l l t o h i g h l e v e l t o k e e p i n g 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 e s . m u t e f u n c t i o n t h e a p a 2 0 6 8 m u t e s t h e a m p l i f i e r o u t p u t s w h e n l o g i c h i g h i s a p p l i e d t o t h e m u t e p i n . a p p l y i n g l o g i c l o w t o t h e m u t e p i n r e t u r n s t h e a p a 2 0 6 8 t o n o r m a l o p e r a t i o n . p r e v e n t u n a n t i c i p a t e d m u t e b e h a v i o r b y c o n n e c t i n g t h e m u t e p i n t o l o g i c h i g h o r l o w . d o n o t l e t t h e m u t e p i n f l o a t . m a x i m u m o u t p u t s w i n g c l a m p i n g f u n c t i o n ( v o l m a x ) t h e a p a 2 0 6 8 p r o v i d e t h e m a x i m u m o u t p u t s w i n g c l a m p i n g f u n c t i o n t o p r o t e c t t h e s p e a k e r . w h e n i n p u t a n o n - z e r o v o l t a g e ( v x ) t o v o l m a x p i n , t h e a m p l i f i e r ? s o u t p u t a m p l i t u d e ( v o ) i s b e l i m i t e d a t v o = v d d ? v x . t h i s f u n c t i o n c a n e f f e c t i v e t o l i m i t e d t h e o u t p u t p o w e r a c r o s s t h e s p e a k e r , a n d a v o i d d a m a g i n g t h e s p e a k e r . t h e m a x i m u m s e t t i n g v o l t a g e o f v o l m a x i s v d d / 2 , a n d w h e n t h i s f u n c t i o n i s n o t u s e d , p l a c e t h e v o l m a x c o n n e c t t o g n d . 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 : e f f i c i e n c y o f a b t l c o n f i g u r a t i o n : 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 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 o n t . ) e f f i c i e n c y = p s u p ( 9 ) p o 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 ( ) / ( v d d x ) = p o p s u p = v p x v p 2 r l 2 v p p r l p v p 4 v d d ( 1 2 ) p o = l orms orms r v v l p p 2r v v = p o = l orms orms r v v l p p 2r v 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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 2 2 a p p l i c a t i o n d e s c r i p t i o n s ( c o n t . ) 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 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 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 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 . * * 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 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 . i n e q u a - b t l a m p l i f i e r e f f i c i e n c y ( c o n t . ) 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 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 0 6 8 i s a 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 , 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 i n g o n t h e m o d e o f o p e r a t i o n . e v e n w i t h 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 0 6 8 d o e s 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 s o p 1 6 - p 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 0 6 8 i s 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 ) i s 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 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 r m a l p a d c o n s i d e r a t i o n s 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 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 0 6 8 r e q u i r e s 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 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 )
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 2 3 a p p l i c a t i o n d e s c r i p t i o n s ( c o n t . ) 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 0 6 8 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 . 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 0 6 8 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 . 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 0 6 8 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 r m a l s h u t d o w n . t h e r m a l c o n s i d e r a t i o n s l i n e a r p o w e r a m p l i f i e r s d i s s i p a t e a s i g n i f i c a n t a m o u n t o f h e a t i n t h e p a c k a g e u n d e r n o r m a l o p e r a t i n g c o n d i t i o n s . t o c a l c u l a t e m a x i m u m a m b i e n t t e m p e r a t u r e s , f i r s t c o n s i d e r a t i o n i s t h a t t h e n u m b e r s f r o m t h e p o w e r d i s s i p a t i o n v s . o u t p u t p o w e r g r a p h s a r e p e r c h a n n e l v a l u e s , s o t h e d i s s i p a t i o n o f t h e i c h e a t n e e d s t o b e d o u b l e d f o r t w o - c h a n n e l o p e r a t i o n . g i v e n q j a , t h e m a x i m u m a l l o w a b l e j u n c t i o n t e m p e r a t u r e ( t j m a x ) , a n d t h e t o t a l i n t e r n a l d i s s i p a t i o n ( p d ) , t h e m a x i m u m a m b i e n t t e m p e r a t u r e c a n b e c a l c u l a t e d w i t h t h e f o l l o w i n g e q u a t i o n . t h e m a x i m u m r e c o m m e n d e d j u n c t i o n t e m p e r a t u r e f o r t h e a p a 2 0 6 8 i s 1 5 0 c . t h e t h e r m a l p a d c o n s i d e r a t i o n s ( c o n t . ) i n t e r n a l d i s s i p a t i o n f i g u r e s a r e t a k e n f r o m t h e p o w e r d i s s i p a t i o n v s . o u t p u t p o w e r g r a p h s . t a m a x = t j m a x - q j a p d ( 1 6 ) 1 5 0 - 4 5 ( 0 . 8 * 2 ) = 7 8 c t h e a p a 2 0 6 8 i s d e s i g n e d w i t h a 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 t h a t t u r n s t h e d e v i c e o f f w h e n t h e j u n c t i o n t e m p e r a t u r e s u r p a s s e s 1 5 0 c t o p r e v e n t d a m a g i n g t h e i c .
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 2 4 p a c k a g e i n f o r m a t i o n s o p - 1 6 - p ( 1 5 0 m i l ) 1 2 3 n 0.015x45 top view side view bottom view end view 0.018 typ. e a2 e1 d1 h e 0.016 typ. d 0.050 typ. a a1 l millimeters inches dim min. max. min. max. a 1.3 5 1. 75 0.05 3 0.06 9 a1 0.1 0 0.25 0.00 4 0.0 10 d 9.80 10.0 0.3 86 0.3 9 4 d1 4.115 ref 0.162 ref e 3.81 3.99 0.150 0.157 e1 2.184 ref 0.086 ref h 5.79 6.20 0.228 0.244 l 0.41 1.27 0.016 0.050 f 0 8 0 8
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 2 5 p h y s i c a l s p e c i f i c a t i o n s t 25 c to peak tp ramp-up t l ramp-down ts preheat tsmax tsmin t l t p 25 temperature time critical zone t l to t p terminal material solder - plated copper (solder material : 90/10 or 63/37 snpb) , 100%sn lead solderability meets eia specification rsi86 - 91, ansi/j - std - 002 category 3. 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 ) 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 /classificatioon 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/se cond max. 6 c/second max. time 25 c to peak temperature 6 minutes max. 8 minutes max. notes: all temperatures refer to topside of the package .measured on the body surface.
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 2 6 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 l i a b i l i t y t e s t p r o g r a m table 1. snpb entectic 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 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 ( c o n t . ) 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 a r r i e r t a p e & r e e l d i m e n s i o n s t ao e w po p ko bo d1 d f p1
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 - j u l . , 2 0 0 5 a p a 2 0 6 8 w w w . a n p e c . c o m . t w 2 7 application a b c j t1 t2 w p e 330 1 100 +2 13+ 0.5 2 0.5 16.4 +0.3 - 0.2 2.5 0.5 16 0.2 12 0.1 1.75 0.1 f d d1 po p1 ao bo ko t sop - 16 - p 7.5 0.1 1.5 +0.1 1.5+ 0.25 4.0 0.1 2.0 0.1 10.9 0.1 10.8 0. 1 3.0 0.1 0.3 0.013 (mm) application carrier width cover tape width devices per reel sop - 16 - p 24 21.3 1000 c u s t o m e r s e r v i c e a n p e c e l e c t r o n i c s c o r p . h e a d o f f i c e : 5 f , n o . 2 l i - h s i n r o a d , s b i p , h s i n - c h u , t a i w a n , r . o . c . t e l : 8 8 6 - 3 - 5 6 4 2 0 0 0 f a x : 8 8 6 - 3 - 5 6 4 2 0 5 0 t a i p e i b r a n c h : 7 f , n o . 1 3 7 , l a n e 2 3 5 , p a c c h i a o r d . , h s i n t i e n c i t y , t a i p e i h s i e n , t a i w a n , r . o . c . t e l : 8 8 6 - 2 - 8 9 1 9 1 3 6 8 f a x : 8 8 6 - 2 - 8 9 1 9 1 3 6 9 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 ( c o n t . ) a j b t2 t1 c c o v e r t a p e d i m e n s i o n s

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