technical data ila7050 low voltage m o no/stereo power am plifier general description the ila7050 is a low voltage audio amplifier for small radios with headphones (such as watch, pen and pocket radios) in mono (bridge-tied load) or stereo applications. features ? limited to battery supply application only (ty p . 3 and 4 v) ? operates w i th supply voltage dow n to 1,6 v ? no external components required ? very low quiescent current ? f i xed integrated gain of 26 db , floating differential input ? flexibility in use - mono bt l as w e ll as stereo ? small dimension of encaps ulation (see package design example) quick reference data supply voltage range vp 1,6 to 6,0 v t o tal quiescent current (at vp = 3 v) ltot ty p. 3,2 ma bridge tied load application (bt l ) output pow er at r) = 32 q vp= 3 v;dtat= 10% po t y p . 1 4 0 mw d.c. output offset voltage betw een the output s l a v i m a x . 7 0 m v noise output voltage (r. m.s. value) at f = 1 khz; rg = 5 kfit v n o (rm s) ty p . 1 4 0 m v stereo application output pow er at r( = 32 ? d tot = 10%; vp = 3v p o t y p . 3 5 mw d tot = 10%; vp= 4,5v p o t y p . 7 5 mw channel separation at rs = 0 ? ; f = 1 khz k t y p . 4 0 d b noise output voltage (r. m.s. value) at f = 1 khz; rs = 5 k ? v n o (rm s) ty p . 1 0 0 m v pa cka ge outline 8-lead dil; plastic (sot 97); sot 97-1; r e v. 00
ila7050 characteristics vp = 3 v; f = 1 khz; r l = 32 0., tamb = 25 c; unless otherwise specified pa ra m e t e r s y m b o l m i n . t y p . ma x . u n i t supply supply voltage vp 1,6 - 6,0 v t o tal quiescent current itot - 3,2 4 ma bridge-tied load application (bt l ); see f i g.4 output pow er; note 1 vp = 3,0 v; diet = 10% p o - 1 4 0 - mw vp = 4,5 v; diet = 10% ( rl = 64 q) p o - 1 5 0 - mw voltage gain g v - 3 2 - d b noise output voltage (r.m. s . v a l u e ) r s = 5 kq .-, f = 1 khz vno(rms) - 140 - mv r s = 0 q; f = 500 khz; b =5 khz vno(rms) - tbf - mv d.c. output offset voltage (at rs = 5 k ? ) l ? vi - - 7 0 m v input impedance (at rs = ) i z i i 1 - - m ? input bias current ii - 40 - na stereo application; output pow er; note 1 v p = 3 , o v ; d t o t = 1 0 % p o - 3 5 - m w vp= 4 ,5v;dtot= 1 0 % p o - 7 5 - m w voltage gain g v 2 4 . 5 2 6 2 7 . 5 d b noise output voltage (r.m. s . v a l u e ) r s = 5 k ? ; f = 1 khz v n o ( r m s ) - 1 0 0 - m v r s = 0 ? ; f = 500 khz; b = 5 khz v n o ( r m s ) - t b f - m v c h a n n e l s e p a r a t i o n r s = 0 ? ; f = 1 khz k 3 0 4 0 - d b input impedance (at rs = ) i z j l 2 - - m ? input bias current ii - 20 - na note 1. output pow er is measured di rectly at the output pi ns of the ic. it is show n as a f unction of the supply voltage in f i g.2 (bt l application) and f i g. 3 (stereo application). pplication diagram (btl) pplication diagram (stereo) r e v. 00
ila7050 n s u f f i x p l a s t i c di p ( m s ? 00 1b a ) sy m b o l m i n m a x a 8. 51 10. 16 b 6. 1 7 . 1 1 c 5. 33 d 0. 36 0. 56 f 1. 14 1. 78 g h j 0 10 k 2. 92 3. 81 no t e s : l 7. 62 8. 26 1. d i m e n s i o n s ?a ?, ?b ? d o n o t i n cl u d e m o l d f l as h o r p r o t r u s i o n s . m 0. 2 0 . 3 6 m a x i m u m m o l d f l a s h o r p r o t r u s i o n s 0. 25 m m ( 0 . 010) p e r s i d e . n 0. 38 d i m e ns i o n, m m 2. 54 7. 62 l h m j a b f g d se a t i n g pl a n e n k 0 . 2 5 ( 0 .01 0 ) m t -t - c 1 8 4 5 r e v. 00
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