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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 . 6 - m a r . , 2 0 1 3 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 . 2 . 8 w s t e r e o c l a s s - d a u d i o p o w e r a m p l i f i e r a n d c l a s s a b h e a d p h o n e d r i v e r ( d c v o l u m e c o n t r o l , u v p , a g c f u n c t i o n ) a p a 2 6 0 6 the apa2606 is a stereo, high efficiency, filter-free class- d audio amplifier available in ssop-24 and ssop-24p packages. the apa2606 provides the precise dc volume control, and the gain range is from -80db (v volume =0v) to +20db (v volume =5v) with 64 steps precise control. it?s easy to get the suitable amplifier?s gain with the 64 steps gain setting. the filter-free architecture eliminates the output filters compared to the traditional class-d audio amplifier, and reduces the external component counts and the compo- nents high, it could save the pcb space, system cost, simplifies the design and the power loss at filter. apa2606 provides an agc (non-clip) function, and this function can low down the dynamic range for large input signal. apa2606 can provide from 20db to -80db with 64 steps gain decrease for non-clipping function, and this function can avoid output signal clipping. the apa2606 also integrates the de-pop circuitry that re- duces the pops and click noises during power on/off or shutdown enable process. the apa2606 has build-in over-current and thermal pro- tection that prevent the chip being destroyed by short- circuit or over-temperature situation. apa2606 combines a stereo bridge-tied loads (btl) mode for speaker drive and a stereo single-end (se) mode for headphone drive into a single chip, where both modes are easily switched by the se/btl input control pin signal. apa2606 is capable of driving 2.8w at 5v into 4 w speaker. the efficiency can archived 85% at r l =4 w when p o =2.8w at v dd =5v. apa2606 is capable of driving 60mw at 5v into 32 w headphone. f e a t u r e s g e n e r a l d e s c r i p t i o n a p p l i c a t i o n s l c d t v s d v d p l a y e r a c t i v e s p e a k e r s o p e r a t i n g v o l t a g e : 3 . 3 v - 5 . 5 v h i g h e f f i c i e n c y 8 5 % a t p o = 2 . 8 w , 4 w s p e a k e r , v d d = 5 v f i l t e r - f r e e c l a s s - d a m p l i f i e r l o w s h u t d o w n c u r r e n t - i d d = 1 m a a t v d d = 5 v 6 4 s t e p s v o l u m e a d j u s t a b l e f r o m - 8 0 d b t o + 2 0 d b 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 a g c ( n o n - c l i p ) f u n c t i o n u n d e r - v o l t a g e p r o t e c t i o n f u n c t i o n o u t p u t p o w e r a t t h d + n = 1 % b t l m o d e - 2 . 2 5 w a t v d d = 5 v , r l = 4 w - 1 . 3 w a t v d d = 5 v , r l = 8 w s e m o d e - 6 8 m w a t v d d = 5 v , r l = 3 2 w o u t p u t p o w e r a t t h d + n = 1 0 % - 2 . 8 w a t v d d = 5 v , r l = 4 w - 1 . 6 w a t v d d = 5 v , r l = 8 w l e s s e x t e r n a l c o m p o n e n t s r e q u i r e d 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 t h e r m a l a n d o v e r - c u r r e n t p r o t e c t i o n s w i t h a u t o - r e c o v e r y p o w e r e n h a n c e d p a c k a g e s s s o p - 2 4 a n d s s o p - 2 4 p 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 )
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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 a p a 2 6 0 6 p i n c o n f i g u r a t i o n s i m p l i f i e d a p p l i c a t i o n c i r c u i t thermal pad (connected the thermal pad to gnd plane for better dissipation = apa2606 routp routn loutn loutp rinn linn volume stereo input signals signal hp_routp hp_loutp vdd se/ btl se/btl gnd 3 14 bypass gnd 2 mute 6 linn 8 17 rinn volume 11 19 sd 23 gnd 22 gnd 21 routn 24 routp loutn 4 pvdd 5 16 agc uvp 9 vdc 10 13 hp_rout hp_lout 12 15 se/btl ssop-24 20 pvdd 18 gnd loutp 1 vdd 7 apa2606 top view ssop-24p apa2606 top view apa2606 14 bypass 17 rinn 19 sd 23 gnd 22 gnd 21 routn 24 routp 16 agc 13 hp_rout 15 se/btl 20 pvdd 18 gnd gnd 3 gnd 2 mute 6 linn 8 volume 11 loutn 4 pvdd 5 uvp 9 vdc10 hp_lout 12 loutp 1 vdd 7
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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 3 a p a 2 6 0 6 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 note : anpec lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which are fully compliant with rohs. anpec lead-free products meet or exceed the lead-free requirements of ipc/jedec j-std-020d for msl classification at lead-free peak reflow temperature. anpec defines ?green? to mean lead-free (rohs compliant) and halogen free (br or cl does not exceed 900ppm by weight in homogeneous material and total of br and cl does not exceed 1500ppm by weight). 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 ) symbol parameter rating unit v dd supply voltage (vdd, pvdd, vdc to gnd) - 0.3 to 6 input voltage (linn, rinn to gnd) - 0.3 to v dd +0.3 input voltage ( sd , mute, agc, vdc, volume and se/btl, bypass to gnd) - 0.3 to v dd +0.3 v t j maximum junction te mperature 150 t stg storage temperature range - 65 to +150 t s dr maximum soldering temperature range , 10 seconds 260 o c p d power dissipation internally limited w n o t e 1 : a b s o l u t e m a x i m u m r a t i n g s a r e t h o s e v a l u e s b e y o n d w h i c h t h e l i f e o f a d e v i c e m a y b e i m p a i r e d . e x p o s u r e t o a b s o l u t e m a x i m u m r a t i n g c o n d i t i o n s f o r e x t e n d e d p e r i o d s m a y a f f e c t d e v i c e r e l i a b i l i t y . t h e r m a l c h a r a c t e r i s t i c s symbol parameter typical value unit q ja thermal resistance - junction to ambient (note 2 ) ssop - 24 ssop - 24p 96 45 o c /w q j c thermal resistance - junction to case (note 3 ) ssop - 24 ssop - 24p 18 11 o c /w n o t e 2 : p l e a s e r e f e r t o ? l a y o u t r e c o m m e n d a t i o n ? , t h e p g n d p i n o n t h e c e n t r a l o f t h e i c s h o u l d c o n n e c t t o t h e g r o u n d p l a n , a n d t h e p c b i s a 2 - l a y e r , 5 - i n c h s q u a r e a r e a w i t h 2 o z c o p p e r t h i c k n e s s . n o t e 3 : t h e c a s e t e m p e r a t u r e i s m e a s u r e d a t t h e c e n t e r o f t h e p g n d p i n o n t h e u n d e r s i d e o f t h e s s o p - 2 4 p a c k a g e . 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 3.3 ~ 5.5 v apa2606 handling code temperature range package code package code n : ssop-24 na : ssop-24p operating ambient temperature range i : -40 to 85 o c handling code tr : tape & reel assembly material g : halogen and lead free device assembly material apa2606 xxxxx apa2606 n: xxxxx - date code apa2606 xxxxxx apa2606 na: xxxxx - date code
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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 4 a p a 2 6 0 6 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 n t . ) 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 apa2606 symbol parameter test condition s min. typ. max. unit v bypass bypass pin voltage 0.49x v dd 0.5x v dd 0.51x v dd v i dd supply current (btl) v mute = 0 v , v /sd = 5 v , no load - 5 12 ma i dd supply current (se) v mute = 0 v , v /sd = 5 v , no load - 2 6 ma i sd supply current v mute = 0 v , v /sd = 0 v , no load - - 1 i i input c urrent sd , mute, volume - - 1 m a f osc oscillator frequency (v dd =3.3~5.5v, t a = - 40~85 o c) 400 500 600 khz r i input resistance (btl) gain=20db 31 36 42 k w r i input resistance (se) gain=3.5db 51 59 68 k w v dd =5.5v, i l =0.8a - 690 - v dd =4.5v, i l =0.6a - 720 - r dson static drain - source on - state re sistance power mosfet (p+n) v dd =3.6v, i l =0.4a - 760 - m w t start - up start - up time from shutdown bypass capacitor, c b =2.2 m f. - 1.2 - s v d d = 5 v , v g n d = 0 v , t a = 2 5 o c , g a i n = 2 0 d b ( u n l e s s o t h e r w i s e n o t e d ) . apa2606 symbol parameter test condition s min. typ. max. unit v dd = 5 v, t a =25 x c , gain=6db r l = 4 w 2.1 2.25 - thd +n =1% f in =1 k hz r l = 8 w 1.0 1.3 - r l = 4 w - 2.8 - p o output power thd +n =1 0 % f in =1 k hz r l = 8 w - 1.6 - w h efficiency r l = 4 w , p o =2. 8w 80 85 - r l = 4 w , p o = 1.6 w - 0.06 0.3 thd+n total harmonic distortion p lus noise f in =1 k hz r l = 8 w , p o = 0.8 w - 0.05 0.2 % crosstalk channel separation p o =0.2w, r l =4 w , f in =1khz - - 85 - 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 symbol parameter range unit sd , mute 2 ~ v dd v ih high l evel t hreshold v oltage s e/ btl 0.8 v dd ~ v dd v sd, mute 0 ~ 0.8 v il low level threshold voltage se/btl 0 ~ 1.0 v v icm common mode input voltage 1 ~ v dd - 1 v t a ambient t emperature rang e - 40 ~ 85 t j junction temperature range - 40 ~ 125 o c r l speaker resistance 3.5 ~ 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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 5 a p a 2 6 0 6 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 . ) v d d = 5 v , v g n d = 0 v , t a = 2 5 o c , g a i n = 2 0 d b ( u n l e s s o t h e r w i s e n o t e d ) . apa2606 symbol parameter test condition s min. typ. max. unit v dd = 5 v, t a =25 x c , gain=6db (cont.) f in = 100 hz - - 50 - psrr power supply rejection ratio r l = 4 w , input ac - ground f in = 1k hz - - 60 - db snr signal to noise ratio with a - weighting filter v o = 1v rms , r l =8 w - 75 - 78 - db att mute mute attenuation f in =1 k hz , r l = 8 w , v in = 1v rms - - 85 - att shutdown shutdown attenuation f in =1 k hz , r l = 8 w , v in = 1v rms - - 110 - db v n output noise w ith a - weight ing filter - 80 120 m vrms v os output offset voltage r l = 4 w (gain =20db) - 20 30 mv 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 ( c o n t . ) apa2606 symbol parameter test condition s min. typ. max. unit v dd = 5 v, t a =25 x c , gain=3.5db thd +n =1% f in =1 k hz r l = 32 w 50 68 - p o output power thd +n =1 0 % f in =1 k hz r l = 32 w - 88 - m w thd+n total harmonic distortion plus noise f in =1 k hz r l = 32 w p o = 42.5m w - 0.02 - % crosstalk channel separation p o =6mw, r l =32 w , f in =1khz - - 90 - f in = 100 hz - - 60 - psrr power supply rejection ratio r l = 32 w , input ac - ground f in = 1k hz - - 70 - snr signal to noise ratio with a - weighting filter v o = 1v rms , r l = 32 w. - 85 - 88 - db v n output noise w ith a - weight ing filter (gain=3.5db) - 20 45 m v rms v os output offset voltage r l = 32 w , (gain=3.5db) - 5 10 mv 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
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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 6 a p a 2 6 0 6 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 e f f i c i e n c y v s . o u t p u t p o w e r efficiency (%) o u t p u t p o w e r ( w ) e f f i c i e n c y v s . o u t p u t p o w e r efficiency (%) o u t p u t p o w e r ( w ) t h d + n v s . o u t p u t p o w e r thd+n (%) o u t p u t p o w e r ( w ) t h d + n v s . o u t p u t p o w e r thd+n (%) o u t p u t p o w e r ( w ) 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 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 ) v dd =3.6v f in =1khz r l = 4 w a v = 20 d b aux-0025 aes-17(20khz) ssop-24 v dd =5v v dd =5.5v v dd =3.3v 0.03 4 0.5 1 2 0.01 20 0.1 1 0.06 2 0.5 0.7 1 v dd =3.6v v dd =5v v dd =5.5v v dd =3.3v f in =1khz r l =8 w a v = 20 d b aux-0025 aes-17(20khz) ssop-24 0.01 20 0.1 1 0.0 0.5 1.0 1.5 2.0 2.5 3.0 r l =4 w +33 m h f in =1khz thd+n ?? 10% a v =20db aux-0025 aes-17(20khz) 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 r l =8 w +33 m h f in =1khz thd+n ?? 10% a v =20db aux-0025 aes-17(20khz) 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 0.0 0.3 0.6 0.9 1.2 1.5 0 . 06 4 0 . 2 0 . 5 1 2 3 v dd = 5 . 0 v f in = 1 khz r l = 4 w aux - 0025 aes - 17 ( 20 khz ) ssop - 24 a v = 12 db a v = 6 db a v = 20 db 0 . 01 20 0 . 1 1 v dd = 5 . 0 v f in = 1 khz r l = 8 w aux - 0025 aes - 17 ( 20 khz ) ssop - 24 a v = 12 db a v = 6 db a v = 20 db 0 . 01 20 0 . 1 1 0 . 03 2 0 . 1 0 . 3 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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 7 a p a 2 6 0 6 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 . ) t h d + n v s . o u t p u t p o w e r thd+n (%) o u t p u t p o w e r ( w ) t h d + n v s . o u t p u t p o w e r thd+n (%) o u t p u t p o w e r ( w ) 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 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 ) 0.01 0.2 0.03 0.05 0.1 v dd =3.6v f in =1khz r l =16 w a v =3.5 d b aes-17(20khz) ssop-24 v dd =5v v dd =5.5v v dd =3.3v 0.01 20 0.1 1 0.02 0.1 0.04 0.06 0.08 v dd =3.6v v dd =5v v dd =5.5v v dd =3.3v f in =1khz r l =32 w a v =3.5 d b aes- 17(20khz) ssop-24 0.01 20 0.1 1 t h d + n v s . f r e q u e n c y thd+n (%) f r e q u e n c y ( h z ) t h d + n v s . f r e q u e n c y thd+n (%) f r e q u e n c y ( h z ) v dd =3.3/5.0/5.5v p o =0.7/1.63/1.95w r l =4 w aux-0025 aes-17(20khz) ssop-24 a v =20db , vdd=5.5v, po=1.95w a v =20db , vdd=5.0v, po=1.63w a v =20db , vdd=3.3v, po=0.7w 0.001 10 0.01 0.1 1 20 20k 200 1k 10k v dd =5.0v p o =1.63w r l =4 w aux-0025 aes-17(20khz) ssop-24 a v =12db a v =20db a v =6db 0.001 10 0.01 0.1 1 20 20k 100 1k 10k 10 m 200 m 30 m 50 m 100 m v dd = 5 . 0 v f in = 1 khz r l = 16 w aes - 17 ( 20 khz ) ssop - 24 a v = 0 db a v = 3 . 5 db 0 . 01 20 0 . 1 1 0 0 . 12 0 . 02 0 . 04 0 . 06 0 . 08 0 . 1 v dd = 5 . 0 v f in = 1 khz r l = 32 w aes - 17 ( 20 khz ) ssop - 24 a v = 0 db a v = 3 . 5 db 0 . 01 20 0 . 1 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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 8 a p a 2 6 0 6 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 . ) t h d + n v s . f r e q u e n c y thd+n (%) f r e q u e n c y ( h z ) t h d + n v s . f r e q u e n c y thd+n (%) f r e q u e n c y ( h z ) t h d + n v s . f r e q u e n c y thd+n (%) f r e q u e n c y ( h z ) t h d + n v s . f r e q u e n c y thd+n (%) f r e q u e n c y ( h z ) 20 20k 100 1k 10k v dd =3.3/5.0/5.5v p o =20/48/60mw r l =32 w aes-17(20khz) ssop-24 a v =3.5db, vdd=5.5v, po=60mw a v =3.5db, vdd=5.0v, po=48mw a v =3.5db, vdd=3.3v, po=20mw 0.001 10 0.01 0.1 1 20 20k 100 1k 10k v dd =5.0v p o =48mw r l =32 w aes-17(20khz) ssop-24 a v =0db a v =3.5db 0.001 10 0.01 0.1 1 c r o s s t a l k v s . f r e q u e n c y crosstalk (db) f r e q u e n c y ( h z ) c r o s s t a l k v s . f r e q u e n c y crosstalk (db) f r e q u e n c y ( h z ) 10 20k 100 1k 10k v dd =3.6/5.0v vo=1v r l =4 w aux-0025 aes-17(20khz) ssop-24 v dd =5.0v , r-ch to l-ch v dd =5.0v , l-ch to r-ch v dd =3.6v , l-ch to r-ch v dd =3.6v , r-ch to l-ch -100 -60 -95 -90 -85 -80 -75 -70 -65 10 20k 100 1k 10k v dd =5.0v vo=1.0v r l =32 w aes-17(20khz) ssop-24 a v =3.5db, r-ch to l-ch a v =3.5db, l-ch to r-ch a v =0db, l-ch to r-ch a v =0db, r-ch to l-ch -120 -60 -115 -110 -105 -100 -95 -90 -85 -80 -75 -70 -65 v dd =3.3/5.0/5.5v p o =0.41/0.96/1.17w r l =8 w aux-0025 aes-17(20khz) ssop-24 a v =20db , vdd=5.5v, po=1.17w a v =20db , vdd=5.0v, po=0.96w a v =20db , vdd=3.3v, po=0.41w 0.001 10 0.01 0.1 1 20 20k 100 1k 10k v dd =5.0v p o =0.96w r l =8 w aux-0025 aes-17(20khz) ssop-24 a v =12db a v =20db a v =6db 0.001 10 0.01 0.1 1 20 20k 100 1k 10k
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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 9 a p a 2 6 0 6 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 . ) a g c f u n c t i o n o u t p u t p o w e r v s . i n p u t a c output power (w) i n p u t a c ( v r m s ) 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 output noise voltage (vrms) f r e q u e n c y ( h z ) 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 output noise voltage (vrms) f r e q u e n c y ( h z ) 10 20k 100 1k 10k v dd =5.0v r l =4 w input ac ground a v =20db a v =10db a v =6db a v =0db aux-0025 aes-17(20khz) ssop-24 25 m 300 m 50 m 75 m 100 m 125 m 150 m 175 m 200 m 225 m 250 m 275 m 10 20k 100 1k 10k v dd =5.0v r l =32 w input ac ground aes-17(20khz) ssop-24 a v =3.5db a v =0db a v =-6db 10 m 100 m 20 m 30 m 40 m 50 m 60 m 70 m 80 m 90 m f r e q u e n c y r e s p o n s e gain (db) f r e q u e n c y ( h z ) f r e q u e n c y r e s p o n s e gain (db) f r e q u e n c y ( h z ) phase (deg) phase (deg) 10 200k 100 1k 10k t t v dd =5.0v r l =16 w ssop-24 amplitude,a v =3.5db amplitude,a v =0db phase, a v =-10db +0 +350 +25 +50 +75 +100 +125 +150 +175 +200 +225 +250 +275 +300 +325 -20 +4 -18 -16 -14 -12 -10 -8 -6 -4 -2 -0 +2 a g c f u n c t i o n o u t p u t p o w e r v s . i n p u t a c output power (w) i n p u t a c ( v r m s ) t v dd =5.0v r l =4 w amplitude,a v =5db amplitude,a v =15db phase, a v =20db phase, a v =10db aux-0025 ssop-24 +2 +22 +4 +6 +8 +10 +12 +14 +16 +18 +20 -200 +200 -175 -150 -125 -100 -75 -50 -25 +0 +25 +50 +75 +100 +125 +150 +175 10 200k 100 1k 10k 0 . 2 1 . 4 0 . 4 0 . 6 0 . 8 1 1 . 2 v dd = 5 . 0 v r l = 8 w aes - 17 ( 20 khz ) ssop - 24 v agc to gnd 0 . 2 1 . 6 0 . 4 0 . 6 0 . 8 1 1 . 2 1 . 4 0 . 2 1 . 4 0 . 4 0 . 6 0 . 8 1 1 . 2 0 . 2 1 . 6 0 . 4 0 . 6 0 . 8 1 1 . 2 1 . 4 v dd = 5 . 0 v r l = 8 w aes - 17 ( 20 khz ) ssop - 24 v agc to gnd
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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 0 a p a 2 6 0 6 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 . ) 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 gain (db) f r e q u e n c y ( h z ) 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 gain (db) f r e q u e n c y ( h z ) p s r r v s . f r e q u e n c y psrr (db) f r e q u e n c y ( h z ) g a i n v s . v o l u m e v o l t a g e gain (db) d c v o l u m e v o l t a g e ( v ) 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 shutdown current (ma) v o l t a g e ( v ) s h u t d o w n c u r r e n t v s . s u p p l y v o l t a g e shutdown current ( m a) v o l t a g e ( v ) 20 20k 100 1k 10k v dd =5.0v r l =4 w a v =20db v o =1vrms aux-0025 aes-17(20khz) ssop-24 right channel left channel -130 -60 -120 -110 -100 -90 -80 -70 20 20k 100 1k 10k v dd =5.0v r l =4 w a v =20db v o =1vrms aux-0025 aes-17(20khz) ssop-24 right channel left channel -130 -60 -120 -110 -100 -90 -80 -70 20 20k 100 1k 10k v dd =5.0v r l =8 w a v =20db v rr =0.2vrms input floating aux-0025 aes-17(20khz) ssop-24 -100 +0 -90 -80 -70 -60 -50 -40 -30 -20 -10 0.0 1.0 2.0 3.0 4.0 5.0 v dd =5.0v no load aux-0025 aes-17(20khz) gain down gain up -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 0 1 2 3 4 5 6 0.0 2.0 4.0 6.0 no load btl mode se mode 0.0 2.0 4.0 6.0 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 1 a p a 2 6 0 6 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 . ) 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 power dissipation (w) o u t p u t p o w e r ( w ) rl=4ohm rl=8ohm 0.0 0.1 0.2 0.3 0.4 0.0 0.5 1.0 1.5 2.0 2.5
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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 2 a p a 2 6 0 6 pin no. name i/o/p function 1 loutp o positive output of left channel power amplifier. 2, 3, 22, 23 pgnd p power amplifier?s ground. 4 loutn o negative output of left channel power amplifier. 5,20 pvdd p power amplifier?s power supply . 6 mute i mu te control signal input. p lace e ntire ic in mute m ode w hen h eld l ow cannot float . 7 vdd p control and bias block?s power supply . 8 linn i n egative i nput of left channel power amplifier . 9 uvp i under - voltage protection input. floating or pull ? h ? disabl e this function. 10 vdc p volume c ontrol block?s power supply . 11 volume i internal gain setting input. 12 hp_lout o headphone output of left channel power amplifier. 13 hp_rout o headphone output of right channel power amplifier. 14 bypass p bias vol tage for power amplifiers. 15 hp/btl i output mode control input, high for hp output mode and low for btl mode cannot float . 16 agc i maximum o utput p ower setting input. when held high disable agc function. 17 rinn i n egative i nput of right channel pow er amplifier . 18 gnd p control and bias block?s ground . 19 sd i shutdown m ode c ontrol i nput. p lace e ntire ic in s hutdown m ode w hen h eld l ow cannot float . 21 routn o negative output of right channel power amplifier. 24 routp o positive output of right channel 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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 3 a p a 2 6 0 6 b l o c k d i a g r a m protection function gate drive gate drive routp pvdd routn rinn oscillator volume linn shutdown control gate drive gate drive loutp pvdd loutn volume control biases & reference sd bypass bypass gnd agc control agc vdd pgnd pgnd vdc mute hp_rout hp_lout se/ btl under-voltage detection circuit uvp se/ btl
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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 4 a p a 2 6 0 6 rl ( w ) r4 ( k w ) r5 ( k w ) p o (w) v agc (v) 29.4 12.0 2.20 1.450 4 21.7 12.0 1.70 1.575 8 30.9 12.0 1.20 1.400 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 v d d = 5 v note 4 :the resistance must use 1%. mute control 4 w 2 pgnd 1 loutp 3 pgnd pgnd 23 routp 24 pgnd 22 4 loutn routn 21 5 pvdd 6 mute sd 19 7 vdd gnd 18 9 uvp 8 linn agc 16 rinn 17 pvdd 20 4 w 10 m f pv dd c s 1 0 . 1 m f c s 2 0 . 1 m f c s 3 shutdown control 1 m f left channel input signal c i 2 1 m f left channel input signal c i 2 v dd 2 . 2 m f c b r 1 50 k w c s 4 1 m f apa 2606 ( top view ) 10 vdc 11 volume 12 hp _ lout se / btl 15 bypass 14 hp _ rout 13 se / btl control se / btl signal 220 m f 220 m f v dd r 4 r 5 r 1 r 2 headphone jack r 3 1 k w 1 k w vsystem c s 5 1 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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 5 a p a 2 6 0 6 d c v o l u m e c o n t r o l t a b l e step gain(btl) gain(se) low (%) high (%) recom(%) low (5v) high(5v) recom(5v) 1 - 80.0 - 80.0 0.00 1.86 0.00 0.000 0. 093 0.00 2 - 41.0 - 55.3 2. 35 3. 37 2. 86 0. 118 0.1 69 0.1 4 3 - 35.0 - 49.3 3. 77 4.91 4. 34 0. 188 0. 246 0.22 4 - 29.0 - 43.0 5.32 6. 45 5 .89 0.2 66 0. 322 0. 29 5 - 23.0 - 36.9 6. 84 8. 00 7.4 2 0.3 42 0.4 00 0.37 6 - 17.0 - 30.7 8.41 9. 54 8.9 8 0. 421 0. 477 0.45 7 - 11.0 - 24.7 9.97 11.10 10. 53 0.4 98 0.5 55 0.5 3 8 - 9.0 - 22.7 1 1.53 12. 65 12.09 0. 5 76 0.6 33 0. 60 9 - 7.0 - 20.7 1 3.08 14. 19 13. 64 0.6 54 0.7 10 0.6 8 10 - 5.0 - 18.8 1 4.64 15. 73 1 5.19 0. 732 0.7 87 0.7 6 11 - 3.0 - 16.8 1 6.18 17. 26 16. 72 0. 809 0.86 3 0.8 4 12 - 2.0 - 15.8 1 7.71 18. 84 1 8.28 0.8 86 0.9 42 0. 91 13 - 1.0 - 14.9 19.25 20.37 19.81 0.9 63 1.0 19 0.9 9 14 0.0 - 13.9 20.81 21. 91 2 1.36 1.040 1. 096 1.0 7 15 0.4 - 13.5 22.36 23. 49 22. 93 1. 118 1. 175 1.1 5 16 0.8 - 13.1 2 3.92 2 5.07 2 4.50 1.1 96 1.2 53 1. 22 17 1.2 - 12.8 2 5.48 26 . 59 2 6.03 1. 274 1.3 29 1. 30 18 1.6 - 12.4 2 7.04 2 8.12 2 7.58 1. 352 1. 406 1.3 8 19 2.0 - 12.0 28.55 29. 67 2 9.11 1. 427 1.4 84 1.4 6 20 2.4 - 11.6 30.11 3 1.21 30.66 1. 505 1.5 61 1. 53 21 2.8 - 11.3 3 1.64 32. 75 3 2.19 1.5 82 1. 638 1. 61 22 3.2 - 10.9 3 3.20 3 4.31 3 3.75 1. 660 1. 715 1.6 9 23 3.6 - 10.5 3 4.74 35. 84 3 5.29 1. 737 1.7 92 1.7 6 24 4.0 - 10.1 3 6.29 3 7.40 3 6.85 1. 815 1.8 70 1. 84 25 4.4 - 9.8 3 7.83 38. 98 3 8.40 1.8 91 1.9 49 1. 92 26 4.8 - 9.4 3 9.38 40.51 3 9.95 1. 969 2.026 2.00 27 5.2 - 9.0 40.94 4 2.05 41.50 2.047 2. 102 2.0 7 28 5.6 - 8.6 4 2.48 4 3.61 4 3.04 2. 124 2.1 80 2. 15 29 6.0 - 8.3 4 4.03 4 5.15 4 4.59 2. 202 2. 257 2. 23 30 6.4 - 7.9 4 5.57 4 6.68 4 6.12 2. 279 2 . 334 2. 31 31 6.8 - 7.5 4 7.11 4 8.24 4 7.67 2. 356 2. 412 2.3 8 32 7.2 - 7.2 4 8.67 4 9.79 4 9.23 2. 433 2.4 90 2. 46
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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 6 a p a 2 6 0 6 d c v o l u m e c o n t r o l t a b l e ( c o n t . ) step gain(btl) gain(se) low (%) high (%) recom(%) low (5v) high(5v) recom(5v) 33 7.6 - 6.8 50.22 51.35 50.79 2. 511 2. 568 2. 5 4 34 8.0 - 6.4 51.76 5 2.91 5 2.33 2. 588 2. 645 2. 6 2 35 8.4 - 6.1 5 3.31 54.42 5 3.87 2. 666 2. 721 2. 6 9 36 8. 8 - 5.7 5 4.85 5 5.98 5 5.42 2. 743 2.7 99 2. 7 7 37 9.2 - 5.4 5 6.41 57.54 5 6.97 2. 820 2. 877 2. 85 38 9.6 - 5.0 5 7.95 5 9.09 5 8.52 2. 897 2. 955 2. 93 39 10.0 - 4.6 5 9.50 60.65 60.08 2. 975 3.033 3.00 40 10.4 - 4.3 61.06 6 2.17 61. 61 3.053 3. 108 3.08 41 10.8 - 3.9 62.60 6 3.70 6 3.15 3.130 3. 185 3. 16 42 11.2 - 3.6 6 4.13 6 5.26 6 4.70 3. 207 3. 263 3. 23 43 11.6 - 3.2 6 5.69 6 6.84 6 6.26 3. 284 3. 342 3. 31 44 12.0 - 2.9 6 7.25 6 8.42 6 7.83 3. 362 3. 421 3. 39 45 12.4 - 2.5 6 8.80 6 9.95 6 9.38 3. 440 3. 498 3. 47 46 12.8 - 2.2 70.34 71.49 70.91 3. 517 3. 574 3. 55 47 13.2 - 1.8 71.90 7 3.04 72.47 3. 595 3. 652 3. 62 48 13.6 - 1.5 7 3.45 7 4.60 7 4.03 3. 673 3. 730 3. 70 49 14.0 - 1.2 7 5.01 7 6.14 7 5.57 3. 750 3. 807 3. 78 50 14.4 - 0.8 7 6.56 7 7.69 77.13 3. 828 3. 885 3. 86 51 14.8 - 0.5 7 8.10 7 9.25 7 8.67 3. 905 3. 963 3. 93 52 15.2 - 0.2 7 9.64 80.78 80.21 3. 982 4 . 039 4.01 53 15.6 0.2 81.20 82.32 81.76 4. 060 4.116 4.09 54 16.0 0.5 82.75 8 3.88 83.31 4.138 4. 194 4. 17 55 16.4 0.8 8 4.29 8 5.46 8 4.87 4. 214 4. 273 4. 24 56 16.8 1.1 8 5.82 8 7.00 8 6.41 4. 291 4. 350 4. 32 57 17.2 1.4 8 7.36 8 8.55 8 7.95 4. 368 4. 428 4. 40 58 17.6 1.7 8 8.9 0 90.11 8 9.50 4. 445 4. 506 4. 48 59 18.0 2.0 90.47 91.65 91.06 4. 524 4. 582 4. 55 60 18.4 2.3 92.01 93.20 92.61 4. 601 4. 660 4. 63 61 18.8 2.6 93.57 9 4.74 9 4.15 4. 678 4. 737 4. 71 62 19.2 2.9 9 5.13 9 6.32 9 5.72 4. 756 4. 81 6 4. 79 63 19.6 3.2 9 6.66 9 7.86 9 7.26 4. 833 4. 893 4. 86 64 20.0 3.5 9 8.22 100 100.00 4. 911 5.000 5.00
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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 7 a p a 2 6 0 6 f u n c t i o n d e s c r i p t i o n class-d operation v outp v out (v outp -v outn ) i out i out output = 0v output > 0v i out output < 0v v outn v outp v outn v outn v outp v out (v outp -v outn ) v out (v outp -v outn ) f i g u r e 1 . t h e a p a 2 6 0 6 o u t p u t w a v e f o r m ( v o l t a g e & c u r r e n t ) t h e a p a 2 6 0 6 p o w e r a m p l i f i e r m o d u l a t i o n s c h e m e i s s h o w n i n f i g u r e 1 ; t h e o u t p u t s v o u t p a n d v o u t n a r e i n p h a s e w i t h e a c h o t h e r w h e n n o i n p u t s i g n a l s . w h e n o u t p u t > 0 v , t h e d u t y c y c l e o f v o u t p i s g r e a t e r t h a n 5 0 % a n d v o u t n i s l e s s t h a n 5 0 % ; w h e n o u t p u t < 0 v , t h e d u t y c y c l e o f v o u t p i s l e s s t h a n 5 0 % a n d v o u t n i s g r e a t e r t h a n 5 0 % . t h i s m e t h o d r e d u c e s t h e s w i t c h i n g c u r r e n t a c r o s s t h e l o a d , a n d r e - d u c e s t h e i 2 r l o s s e s i n t h e l o a d t h a t i m p r o v e t h e a m p l i f i e r ? s e f f i c i e n c y . t h i s m o d u l a t i o n s c h e m e h a s v e r y s h o r t p u l s e s a c r o s s t h e l o a d , t h i s m a k i n g t h e s m a l l r i p p l e c u r r e n t a n d v e r y l i t t l e l o s s o n t h e l o a d , a n d t h e l c f i l t e r c a n b e e l i m i n a t e d i n m o s t a p p l i c a t i o n s . a d d e d t h e l c f i l t e r c a n i n c r e a s e t h e e f f i c i e n c y b y f i l t e r t h e r i p p l e c u r r e n t . bypass voltage the bypass voltage is equal to v dd /2, this voltage is for bias the internal preamplifier stages. the external ca- pacitor for this reference ( c b ) is a critical component and serves several important functions. dc volume control function t h e a p a 2 6 0 6 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 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 6 0 6 v o l u m e c o n t r o l c o n s i s t s o f 6 4 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 h e 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 t h e ? d c v o l u m e c o n - t r o l t a b l e ? . 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 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 s l e v e l h a v e a r e 0 . 4 d b / s t e p f r o m 2 0 d b t o 0 d b ; 1 d b / s t e p f r o m 0 d b t o - 3 d b ; 2 d b / s t e p f r o m - 3 d b t o - 1 1 d b a n d 6 d b / s t e p f r o m - 1 1 d b t o - 4 1 d b 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 . agc (non-clipping) function t h e a p a 2 6 0 6 p r o v i d e s t h e 6 4 s t e p s n o n - c l i p p i n g c o n t r o l , a n d t h e r a n g e i s f r o m 2 0 d b t o - 8 0 d b . w h e n t h e o u t p u t r e a c h e s t h e m a x i m u m p o w e r s e t t i n g v a l u e , t h e i n t e r n a l p r o g r a m m a b l e g a i n a m p l i f i e r ( p g a ) w i l l d e c r e a s e t h e g a i n f o r p r e v e n t t h e o u t p u t w a v e f o r m c l i p p i n g . t h i s f e a t u r e p r e - v e n t s s p e a k e r d a m a g e f r o m o c c u r r i n g c l i p p i n g . u s i n g t h e a g c p i n t o s e t t h e n o n - c l i p p i n g f u n c t i o n a n d l i m i t t h e 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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 8 a p a 2 6 0 6 f u n c t i o n d e s c r i p t i o n ( c o n t . ) table 1: agc setting threshold v.s output power agc function output power vdd~0.45vdd disable agc function 0.45vdd~0.27vdd 8() 2 agc ? vdd-v po= rl 0.27vdd~gnd (max output power 4 w ) po=2.513w (max output power 8 w ) po= 1.26w shutdown operation 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 6 0 6 c o n t a i n s a s h u t d o w n f u n c t i o 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 l o g i c l o w i s p l a c e d o n t h e s d p i n f o r a p a 2 6 0 6 . 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 0 . 6 5 v . i t i s t h e 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 o l t a g e 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 d p i n t o a l o w l e v e l , t h e a m p l i f i e r e n t e r s a l o w - c o n s u m p t i o n - c u r r e n t s t a t e , i d d f o r a p a 2 6 0 6 i s i n s h u t d o w n m o d e . o n n o r m a l o p e r a t i n g , a p a 2 6 0 6 ? s s d p i n s h o u l d p u l l t o a 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 d 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 . over-current protection t h e a p a 2 6 0 6 m o n i t o r s t h e o u t p u t c u r r e n t , a n d w h e n t h e c u r r e n t e x c e e d s t h e c u r r e n t - l i m i t t h r e s h o l d , t h e a p a 2 6 0 6 t u r n - o f f t h e o u t p u t s t a g e t o p r e v e n t t h e o u t p u t d e v i c e f r o m d a m a g e s i n o v e r - c u r r e n t o r s h o r t - c i r c u i t c o n d i t i o n . t h e i c w i l l t u r n - o n t h e o u t p u t b u f f e r a f t e r 1 m s , b u t i f t h e o v e r - c u r r e n t o r s h o r t - c i r c u i t s c o n d i t i o n i s s t i l l r e m a i n , i t e n t e r s t h e o v e r - c u r r e n t p r o t e c t i o n a g a i n . t h e s i t u a t i o n w i l l c i r c u - l a t e u n t i l t h e o v e r - c u r r e n t o r s h o r t - c i r c u i t s h a s b e r e m o v e d . thermal protection t h e o v e r - t e m p e r a t u r e c i r c u i t l i m i t s t h e j u n c t i o n t e m p e r a - t u r e o f t h e a p a 2 6 0 6 . 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 e x - c e e d s t j = + 1 5 0 o c , a t h e r m a l s e n s o r t u r n s o f f t h e o u t p u t b u f f e r , a l l o w i n g t h e d e v i c e s t o c o o l . t h e t h e r m a l s e n s o r a l l o w s t h e a m p l i f i e r t o s t a r t - u p a f t e r t h e j u n c t i o n t e m p e r a - t u r e d o w n a b o u t 1 2 5 o c . t h e t h e r m a l p r o t e c t i o n i s d e - s i g n e d w i t h a 2 5 o c h y s t e r e s i s t o l o w e r t h e a v e r a g e t j d u r i n g c o n t i n u o u s t h e r m a l o v e r l o a d c o n d i t i o n s , i n c r e a s - i n g l i f e t i m e o f t h e i c . u n d e r - v o l t a g e p r o t e c t i o n external under voltage detection can be used to shut- down the apa2606 before an input device can generate a pop. the shutdown threshold at the uvp pin is 1.2v. the user selects a resistor divider to obtain the shutdown threshold and hysteresis for the specific application. the thresholds can be determined as below: vuvp=[1.2-(5.7 m axr3)]x(r1+r2)/r2 hysteresis=4.6 m a x r3 x (r1+r2)/r2 with the condition: r3 >> r1// r2 for example, to obtain vuvp=3.7v and 0.9v hysteresis, r1=3k w , r2=1k w and r3=50k w . figure 2. under-voltage protection vsystem r1 3k w r2 1k w r3 50k w uvp pin 1.2v 5.7 m a
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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 9 a p a 2 6 0 6 a p p l i c a t i o n i n f o r m a t i o n square wave into the speaker a p p l y t h e s q u a r e w a v e i n t o t h e s p e a k e r m a y c a u s e t h e v o i c e c o i l o f s p e a k e r j u m p i n g o u t t h e a i r g a p a n d d e f a c i n g t h e v o i c e c o i l . h o w e v e r , t h i s d e p e n d s o n t h e a m p l i t u d e o f s q u a r e w a v e i s h i g h e n o u g h a n d t h e b a n d w i d t h o f s p e a k e r i s h i g h e r t h a n t h e s q u a r e w a v e ? s f r e q u e n c y . f o r 5 0 0 k h z s w i t c h i n g f r e q u e n c y , t h i s i s n o t i s s u e d f o r t h e s p e a k e r b e c a u s e t h e f r e q u e n c y i s b e y o n d t h e a u d i o b a n d a n d c a n ? t s i g n i f i c a n t l y m o v e t h e v o i c e c o i l , a s c o n e m o v e m e n t i s p r o p o r t i o n a l t o 1 / f 2 f o r f r e q u e n c y o u t o f a u d i o b a n d . input resistor, r i f o r a c h i e v i n g t h e 6 4 s t e p s g a i n s e t t i n g , i t v a r i e s t h e i n p u t r e s i s t a n c e n e t w o r k ( r i & r f ) o f a m p l i f i e r . t h e i n p u t r e s i s t o r ? s r a n g e f o r m s m a l l e s t t o m a x i m u m i s a b o u t s i x t i m e s . t h e r e f o r e , t h e i n p u t h i g h - p a s s f i l t e r ? s l o w c u t o f f f r e q u e n c y w i l l c h a n g e s i x t i m e s f r o m l o w t o h i g h . t h e c u t o f f f r e q u e n c y c a n b e c a l c u l a t e d b y e q u a t i o n 1 . input capacitor, 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 i n p u t i m p e d a n c e r i 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 : ( 1 ) i i ) c(highpass c r 2 1 f p = t h e v a l u e o f c i m u s t b e c o n s i d e r e d c a r e f u l l y b e c a u s e 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 . w h e r e r i i s 3 6 k w ( m i n i m u m ) 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 5 0 h z . t h e 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 : ( 2 ) c i i f r 2 1 c p = 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 . 0 8 m f , s o a v a l u e i n t h e r a n g e o f 0 . 0 1 m f t o 0 . 0 2 2 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 s ? i n p u t i n m o s t a p p l i c a t i o n s b e c a u s e t h e d c l e v e l o f t h e a m p l i f i e r s ? i n p u t s a r e h e l d a t v d d / 2 . 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 . gain vs. input resistance gain (db) i n p u t r e s i s t a n c e ( k w ) 20 30 40 50 60 70 80 90 100 110 120 130 140 -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 effective bypass capacitor, c b as with any power amplifier, proper supply bypassing is critical for low noise performance and high power supply rejection. the bypass capacitance sffects the startiup time. it is determined in the following wquation: the capacitor location on the bypass pin should be as close to the device as possible. the effect of a larger half bypass capacitor is improved psrr due to increased half-supply stability. the selection of bypass capacitors, especially c b , is thus dependent upon desired psrr requirements, click and pop performance. to avoid the start-up pop noise occurred, choose c i which is not larger than c b . t s t a r t - u p = 0 . 5 ( s e c / m f ) x c b + 0 . 2 ( s e c ) ( 3 )
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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 0 a p a 2 6 0 6 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 i g u r e 3 . f e r r i t e b e a d o u t p u t f i l t e r v on v op 4 w 1n f 1n f ferrite bead ferrite bead f i g u r e 4 a n d 5 a r e e x a m p l e s f o r a d d e d t h e l c f i l t e r ( b u t t e r w o r t h ) , i t ? s r e c o m m e n d e d f o r t h e s i t u a t i o n t h a t t h e t r a c e f o r m a m p l i f i e r t o s p e a k e r i s t o o l o n g a n d n e e d s t o e l i m i n a t e t h e r a d i a t e d e m i s s i o n o r e m i . f i g u r e 4 . l c o u t p u t f i l t e r f o r 8 w s p e a k e r outp outn 8 w 1 m f 36 m h 36 m h 1 m f f i g u r e 5 . l c o u t p u t f i l t e r f o r 4 w s p e a k e r outp outn 4 w 2.2 m f 18 m h 18 m h 2.2 m f f i g u r e 4 a n d 5 ? s l o w p a s s f i l t e r c u t - o f f f r e q u e n c y a r e 2 5 k h z ( f c ) . lc 2 1 f c(lowpass) p = ( 5 ) power-supply decoupling capacitor, c s t h e a p a 2 6 0 6 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 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 . ferrite bead selection i f t h e t r a c e s f o r m a p a 2 6 0 6 t o s p e a k e r a r e s h o r t , t h e f e r r i t e b e a d f i l t e r s c a n r e d u c e t h e h i g h f r e q u e n c y r a d i a t e d t o m e e t t h e f c c & c e r e q u i r e d . a f e r r i t e t h a t h a s v e r y l o w i m p e d a n c e a t l o w f r e q u e n c i e s a n d h i g h i m p e d a n c e a t h i g h f r e q u e n c i e s ( a b o v e 1 m h z ) i s r e c o m m e n d e d . i f t h e t r a c e s f o r m a p a 2 6 0 6 t o s p e a k e r a r e s h o r t , i t d o e s n ? t r e q u i r e o u t p u t f i l t e r f o r f c c & c e s t a n d a r d . a f e r r i t e b e a d m a y b e n e e d e d i f i t ? s f a i l i n g t h e t e s t f o r f c c o r c e t e s t e d w i t h o u t t h e l c f i l t e r . t h e f i g u r e 3 i s t h e s a m p l e f o r a d d e d f e r r i t e b e a d ; t h e f e r r i t e s h o w s c h o o s i n g h i g h i m p e d a n c e i n h i g h f r e q u e n c y . output low-pass filter
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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 1 a p a 2 6 0 6 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 . ) the optimum decoupling is achieved by using two differ- ent types of capacitors that target on different types of noise on the power supply leads. for higher frequency transients, spikes, or digital hash on the line, a good low equivalent-series-resistance (esr) ceramic capacitor, typically 0.1 m f placed as close as possible to the device vdd pin for works best. for filtering lower frequency noise signals, a large aluminum electrolytic capacitor of 10 m f or greater placed near the audio power amplifier is recommended. power-supply decoupling capacitor, c s (cont.)
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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 2 a p a 2 6 0 6 p a c k a g e i n f o r m a t i o n ssop-24 s y m b o l min. max. 1.75 1.24 0.15 0.25 a a2 c d e e l h millimeters b 0.20 0.30 0.635 bsc ssop-24 (150mil) 0.25 0.50 0.40 1.27 0.025 bsc min. max. inches 0.069 0.049 0.008 0.012 0.006 0.010 0.010 0.020 0.016 0.050 q 0 o 8 o 0 o 8 o 0.10 a1 0.25 0.004 0.010 e1 3.80 4.00 0.150 0.158 5.80 6.20 0.228 0.244 8.56 8.76 0.337 0.345 view a seating plane gauge plane q 0 . 2 5 l a 1 a 2 a b e d e 1 e see view a c h x 4 5 o
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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 3 a p a 2 6 0 6 s s o p - 2 4 p p a c k a g e i n f o r m a t i o n h x 4 5 o c see view a d2 e 2 e 1 e b e d c aaa nx a 2 a a 1 note : 1. rerfence to jedec mo-137 ae. 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 "e" does not include inter-lead flash or protrusions. inter-lead flash and protrusions shall not exceed 10 mil per side. 0 . 2 5 l view a q gauge plane seating plane s y m b o l min. max. 1.75 1.24 0.15 0.25 a a2 c d e e l h millimeters b 0.20 0.30 0.635 bsc ssop-24p 0.25 0.50 0.40 1.27 0.025 bsc min. max. inches 0.069 0.049 0.008 0.012 0.006 0.010 0.010 0.020 0.016 0.050 0 o 8 o 0 o 8 o 0.10 a1 0.25 0.004 0.010 e1 3.80 4.00 0.150 0.158 5.80 6.20 0.228 0.244 8.56 8.76 0.337 0.345 0.158 d2 3.20 4.00 0.126 0.110 e2 2.00 2.80 0.079 aaa 0.004 0.10 q
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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 4 a p a 2 6 0 6 application a h t1 c d d w e1 f 330 2.00 50min 24.4 0 +2.0 0 - 0.0 0 13.0+0.5 0 - 0.2 0 1.5min 20.2min 24.0 ? 0.30 1.75 ? 0.10 11.5 ? 0.10 p 0 p1 p 2 d 0 d1 t a 0 b 0 k 0 ssop - 24 4.0 ? 0.10 12.0 ? 0.10 2.0 ? 0.10 5+0.10 - 0.0 0 1.5min 0.60+0.00 - 0. 40 8.50 ? 0.10 13.50 ? 0.10 2.60 ? 0. 10 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 ssop - 24p 4.0 ? 0.10 8.0 ? 0.10 2.0 ? 0.10 1.5+0.10 - 0.00 1.5 min. 0.6+0.00 - 0.40 6.40 ? 0.20 9.00 ? 0.20 2.10 ? 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 d e v i c e s p e r u n i t package type unit quantity ssop - 24 tape & reel 2500 ssop - 24p tape & reel 2500 h t1 a d a e 1 a b w f t p0 od0 b a0 p2 k0 b 0 section b-b section a-a od1 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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 5 a p a 2 6 0 6 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 ssop-24 user direction of feed ssop-24p 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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 6 a p a 2 6 0 6 profile feature sn - pb eutectic assembly pb - free assembly preheat & soak temperature min (t smin ) temperature max (t smax ) time (t smin to t smax ) ( t s ) 100 c 150 c 60 - 120 seconds 150 c 200 c 60 - 1 2 0 seconds average ramp - up rate (t smax to t p ) 3 c/second ma x. 3 c/second max. liquidous temperature ( t l ) time at l iquidous (t l ) 183 c 60 - 150 seconds 217 c 60 - 150 seconds peak package body temperature (t p ) * see classification temp in table 1 see classification temp in table 2 time (t p ) ** within 5 c of the spe cified c lassification t emperature ( t c ) 2 0 ** seconds 3 0 ** seconds average r amp - down rate (t p to t smax ) 6 c/second max. 6 c/second max. time 25 c to p eak t emperature 6 minutes max. 8 minutes max. * tolerance for peak profile temperature (t p ) is defined as a supplier minimum and a user maximum. ** tolerance for time at peak profile temperature (t p ) is defined as a supplier minimum and a user maximum. 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 l a s s i f i c a t i o n p r o f i l 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 . 6 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 7 a p a 2 6 0 6 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 . head office : no.6, dusing 1st road, sbip, hsin-chu, taiwan 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 table 1. snpb eutectic process ? classification temperatures (tc) package thickness volume mm 3 <350 volume mm 3 3 350 <2.5 mm 235 c 22 0 c 3 2.5 mm 220 c 220 c table 2. pb - free process ? classification temperatures (tc) package thickness volume mm 3 <350 volume mm 3 350 - 2000 volume mm 3 >2000 <1.6 mm 260 c 260 c 260 c 1.6 mm ? 2.5 mm 260 c 250 c 245 c 3 2.5 mm 250 c 245 c 245 c r e l i a b i l i t y t e s t p r o g r a m test item method description solderability jesd - 22, b102 5 sec, 245 c holt jesd - 22, a108 1000 hrs, bias @ t j =125 c pct jesd - 22, a102 168 hrs, 100 % rh, 2atm , 121 c tct jesd - 22, a104 500 cycles, - 65 c~150 c hbm mil - std - 883 - 3015.7 vhbm ? 2kv mm jesd - 22, a1 15 vmm ? 200v latch - up jesd 78 10ms, 1 tr ? 100ma 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 . )

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