ics for fm/am tuner n overview the an7273 and the an7273s are the ics designed for hi-fi stereo tuner. they are functioned with stop signal pin besides the an7223s function. n features ? level meter output (fm?m common use) ? stop signal output (for synthesizer tuner) ? am : including rf amplifier and high sensitivity ? low power consumption ? low shock noise level from function switch operation ? fewer external parts an7273, an7273s am tuner, fm/am if amplifier circuit 8 9 1 7 4 3 5 18 6 2 10 11 15 13 16 17 14 12 am?m if amp. fm if amp. fm quad. det. mute det. af amp. mute or shock noise canceller level meter am mixer am rf amp. am l. osc. agc am det. gnd v cc (am) v cc v ref n block diagram 1 2 3 4 5 6 7 8 3 ~ 15? 7.62 0.25 0.3 + 0.1 ?0.025 3.8 0.25 (3.45) 0.51min. 2.54 1.2 0.25 0.5 0.1 unit : mm 6.3 0.25 18 17 16 15 14 13 12 11 21.7 0.3 9 10 an7273 18-lead dip package (dip018-p-0300e) 1.3 0.4 0.25 1.27 0.1 0.3 1.2 0.3 0.65 0.15 an7273s 12.6 0.3 7.7 0.3 5.4 0.3 unit : mm 18-lead sop package (sop018-p-0300) 1 9 18 10
an7273, an7273s ics f or fm/amt uner p i n n o . p i n n a m e 1 2 3 4 5 6 7 8 9 f m i f i n p u t a m s u p p l y / m u t e a d j u s t m e n t a m r f i n p u t a m m i x e r o u t p u t a g c o u t p u t ( 2 ) a g c o u t p u t ( 1 ) a m i f i n p u t i f b y - p a s s i f b y - p a s s n p i n d e s c r i p t i o n s p i n n o . p i n n a m e 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 a m d e t e c t i o n o u t p u t g n d f m d e t e c t i o n c o i l a f o u t p u t v c c l e v e l m e t e r o u t p u t a f c o u t p u t r e f e r e n c e v o l t a g e l o c a l o s c i l l a t i o n c o i l p a r a m e t e r s y m b o l r a t i n g u n i t p d t o p r t c s g v c c i c c a n 7 2 7 3 a n 7 2 7 3 s a n 7 2 7 3 a n 7 2 7 3 s a n 7 2 7 3 a n 7 2 7 3 s p o w e r d i s s i p a t i o n o p e r a t i n g a m b i e n t t e m p e r a t u r e s t o r a g e t e m p e r a t u r e s u p p l y v o l t a g e s u p p l y c u r r e n t m w ? c ? c v m a 1 4 . 4 3 0 3 1 7 * 1 2 1 0 * 2 2 0 ~ + 7 5 2 0 ~ + 7 5 5 5 ~ + 1 5 0 5 5 ~ + 1 2 5 * 1 t a = 2 5 ? c , * 2 t a = 7 5 ? c n a b s o l u t e m a x i m u m r a t i n g s ( t a = 2 5 ? c ) d c m e a s u r e m e n t v i = 8 0 d b i n p u t a t v o = 3 d b i n p u t a t v o = m o r e t h a n 2 0 d b v i = 7 0 d b v i = 1 0 0 d b d c m e a s u r e m e n t v i = 8 0 d b i n p u t a t v o = 1 0 m v v i = 1 0 d b v i = 8 0 d b p a r a m e t e r s y m b o l c o n d i t i o n m i n . t y p . m a x . u n i t n 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 ( v c c = 5 v , t a = 2 5 ? c ) i t o t v o v i ( l i m ) v i ( m u t e ) v 1 5 1 1 v 1 5 1 1 i t o t v o s m a x . v 1 5 1 1 v 1 5 1 1 9 7 5 4 3 . 5 5 5 0 . 6 1 1 . 1 4 8 6 0 4 0 1 . 1 2 1 4 1 0 0 4 6 6 4 0 . 8 1 . 2 6 1 3 8 0 9 . 5 1 . 2 5 2 0 1 2 5 4 9 . 5 7 3 1 . 1 1 . 4 2 1 9 1 0 0 1 5 1 3 0 1 . 3 8 m a m v d b d b v v m a m a d b m v v t o t a l c i r c u i t c u r r e n t d e m o d u l a t i o n o u t p u t l e v e l l i m i t i n g s e n s i t i v i t y m u t i n g s e n s i t i v i t y l e v e l m e t e r d r i v i n g o u t p u t ( 1 ) l e v e l m e t e r d r i v i n g o u t p u t ( 2 ) t o t a l c i r c u i t c u r r e n t d e t e c t i o n o u t p u t l e v e l m a x . s e n s i t i v i t y l e v e l m e t e r d r i v i n g o u t p u t ( 1 ) l e v e l m e t e r d r i v i n g o u t p u t ( 2 ) n o t e ) u n l e s s o t h e r w i s e s p e c i f i e d , f i = 1 0 . 7 m h z , m o d . = 2 2 . 5 k h z , f m = 4 0 0 h z ( f m ) f i = 1 m h z , m o d . = 3 0 % , f m = 4 0 0 h z ( a m ) f m a m p a r a m e t e r s y m b o l r a n g e n r e c o m m e n d e d o p e r a t i n g r a n g e ( t a = 2 5 ? c ) o p e r a t i n g s u p p l y v o l t a g e r a n g e v c c ( o p r ) 3 ~ 1 2 v
ics f or fm/amt uner an7273, an7273s v i ( l i m ) , v o , i t o t v c c ( f m ) v o v i 0 2 0 4 0 6 0 8 0 i n p u t v o l t a g e v i ( d b ) o u t p u t v o l t a g e v o ( d b ) 6 0 0 2 0 4 0 1 2 0 1 0 0 8 0 m u t e o n v o d f 1 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 i n p u t f r e q u e n c y c h a n g e d f ( k h z ) o u t p u t v o l t a g e v o ( d b ) 0 3 0 0 2 0 0 1 0 0 3 0 0 2 0 0 1 0 0 1 4 0 1 2 0 1 0 0 8 0 6 0 5 0 4 8 4 6 4 4 1 4 1 2 1 0 8 6 4 2 0 i n p u t l i m i t i n g v o l t a g e v i ( l i m ) ( d b ) t o t a l c i r c u i t c u r r e n t i t o t ( m a ) 0 2 4 6 8 1 0 1 2 1 4 1 6 o u t p u t v o l t a g e v o ( m v ) o u t p u t v o l t a g e v o ( m v ) s u p p l y v o l t a g e v c c ( v ) v c c = 5 v f i = 1 0 . 7 m h z f m = 4 0 0 h z , 2 2 . 5 k h z 1 4 0 1 2 0 1 0 0 8 0 6 0 4 0 2 8 2 4 2 0 1 6 1 2 1 4 1 3 1 2 1 1 1 0 i n p u t v o l t a g e v i ( d b ) t o t a l c i r c u i t c u r r e n t i t o t ( m a ) 0 2 4 6 8 1 0 1 2 1 4 1 6 s u p p l y v o l t a g e v c c ( v ) f m = 4 0 0 h z , 3 0 % f i = 1 m h z v o , v i , i t o t v c c ( a m ) v o i t o t ( m u t e o n ) i t o t ( m u t e o f f ) v i ( l i m ) v o ( v i = 8 0 d b ) i t o t v i ( a t v o = 1 0 m v ) m u t e o f f m u t e o n m u t e o f f v c c = 5 v f i = 1 0 . 7 m h z f m = 2 2 . 5 k h z , 4 0 0 h z 0 d b = 1 0 8 m v v o , v n o , t h d v i ( f m ) 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 i n p u t v o l t a g e v i ( d b ) o u t p u t v o l t a g e v o ( d b ) , o u t p u t n o i s e v o l t a g e v n o ( d b ) 6 0 0 2 0 4 0 1 2 0 1 0 0 8 0 5 4 3 2 1 0 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 ( % ) 0 d b = 8 1 m v v c c = 5 v f m = 4 0 0 h z f i = 1 m h z v o , s / n , t h d v i ( a m ) 1 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 i n p u t v o l t a g e v i ( d b ) o u t p u t v o l t a g e v o ( d b ) , s i g n a l t o n o i s e r a t i o s / n ( d b ) 6 0 0 2 0 4 0 1 2 0 1 0 0 8 0 1 2 1 0 8 6 4 2 0 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 ( % ) v 1 5 v i 1 . 6 1 . 4 1 . 2 1 . 0 0 . 8 0 . 6 0 . 4 0 . 2 0 i n p u t v o l t a g e v i ( d b ) l e v e l m e t e r v o l t a g e v 1 5 ( v ) 6 0 0 2 0 4 0 1 2 0 1 0 0 8 0 v c c = 5 v ( a m ) f i = 1 m h z f m = 4 0 0 h z , 3 0 % ( f m ) f i = 1 0 . 7 m h z f m = 4 0 0 h z , 2 2 . 5 k h z t h d m o d . = 8 0 % v o s / n m o d . = 3 0 % t h d v n o v o a m f m
an7273, an7273s ics f or fm/amt uner 1 2 3 4 5 6 7 8 9 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 a n 7 2 7 3 / s + + + + + + + c f 1 t 3 2 k 1 0 k o n o f f m u t e 3 3 0 f r o m f m f r o n t e n d . 0 . 0 2 2 f 0 . 0 2 2 f 4 . 7 f 1 0 0 f 0 . 0 2 2 f 0 . 0 0 4 7 f 0 . 0 1 f 2 7 k 4 7 0 2 . 2 k d 1 5 1 1 0 0 f 1 0 0 f 4 7 f 4 7 f m a m 0 . 0 2 2 f v 1 5 2 . 2 f 1 0 f 5 . 1 k 0 . 0 2 2 f t 2 d 1 : m a 2 7 w v c c = 5 v v o ( f m , a m ) 0 . 0 2 2 f t 1 1 8 n application circuit 2 2 f 0 . 0 2 2 f 4 7 f 0 . 0 0 4 7 f 0 . 0 2 2 f 1 0 0 f 2 . 2 k 0 . 0 1 f 2 7 k a f o u t p u t v c c t 1 1 0 f 5 . 1 k 1 4 7 0 v c c 1 f 4 7 s w f m a m 2 . 2 k m u t e a d j . 1 0 k 1 0 0 f 0 . 0 2 2 f m u t e s w m a 2 7 w ( m a t s u s h i t a ) a m i n t 2 a m a n t c 1 a n t o s c c f 2 0 . 0 2 2 f 0 . 0 2 2 f 0 . 0 2 2 f 4 7 p f 4 . 7 f 1 0 0 f c f 1 t 3 3 3 0 1 8 f m i f i n p u t + a n 7 2 7 3 n printed circuit board layout
ics f or fm/amt uner an7273, an7273s s y m b o l t 1 u s e , f r e q . t y p e n o . m a k e r c o n n e c t i o n d i a g r a m n u m b e r o f t u r n s t u n i n g c a p . u n l o a d e d q t 2 t 3 m a t s u s h i t a m a t s u s h i t a m a t s u s h i t a 1 0 0 p f 1 5 0 0 p f 9 0 2 0 % 9 5 2 0 % 6 0 3 0 % f m q u a d . c o i l 1 0 . 7 m h z a m m w o s c . c o i l a m m i x . o u t p u t 4 5 5 k h z e l l 7 s 7 5 4 e l f 7 s 7 5 2 a n c o i l s p e c i f i c a t i o n s 1 2 8 t 2 3 5 t 4 6 3 t 1 2 4 t 2 3 1 2 5 t 4 6 7 t 3 2 3 5 t 6 4 1 0 t 2 1 1 9 t e i a 7 s 8 0 2 a 4 6 2 1 3 4 6 2 3 1 4 6 2 3 1 t o k o c f 1 s y m b o l m a k e r b a n d w i d t h l o s s n c e r a m i c f i l t e r s p e c i f i c a t i o n 4 5 5 k h z u s e t y p e n o . c e n t e r f r e q . a m i f c f m 2 4 5 5 b 7 k h z ( 6 d b ) 2 . 6 d b
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