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HT6845 emi d ??? ? ?2010, -1- 03/2010 - v0.1 3.4w emi ? d ??? ? ? ? (anti-clipping function, acf) ? ? emi ? ???? ? (wlcsp) 3.4 w1ch (v dd =5.0v, r l =4 ? , thd+n=10%) 0.9 w1ch (v dd =3.6v, r l =8 ? , thd+n=10%) ? 91% (v dd =5.0v, r l =8 ? , po=1w) 88% (v dd =3.6v, r l =8 ? , po=600mw) 78% (v dd =3.6v, r l =8 ? , po=100mw) ? thd+n 0.03% (v dd =3.6v, r l =8 ? , po=0.4w) ? ?? ? - ?(click-pop) ? snr 94db (v dd =3.6v, av=18db) ? ??? 0.1a ? 18db ? ? ? ? ? ??? ? ?? 1.45mmx1.6mm wlcsp-9 sop-8 ? ? ??? pdas ? gps ? pmp/mp4 ?? ? ? ? HT6845 ? emi ??? ? d ??? 5v ? 10% thd+n 4 ? 3.4w ??? ??? 100mw ???? ? ab ?? HT6845 ??? acf ??????? ???? ?????????? ???? ???????? acf-1 acf-2 ???? ????? acf-off ?? HT6845 ???? emi ? ??????? ?? fcc part15 class b ?? ?????? HT6845 ????? ?????? ?????? ???? ??????????? ? ? HT6845 ????? ????? ????? ?? c s 1f vdd emi pw m ? ? acf ? ? ocp otp uvlo ? out+ out- agnd ctrl c r 1f c ctrl 0.1 f ctrl 1 ctrl 2 vref r ctrl1 r ctrl2 r ctrl3 in+ in- c in 33 nf c in 33 nf HT6845 pgnd
HT6845 emi d ??? ? ?2010, -2- 03/2010 - v0.1 ? in+ agnd in- vdd vref ctrl out+ pgnd out- 1 2 3 a b c 9 wlcsp ? 1 2 3 4 8 7 6 5 ctrl vref in- in+ out- gnd vdd out+ 8 sop ? ? *1 ? wlcsp sop i/o esd a1 4 in+ a pn ?? + a2 6 vdd power - ? a3 5 out+ o - ?? btl+ b1 7 agnd gnd - ? b2 2 vref a pn ?? b3 7 pgnd gnd - ? c1 3 in- a pn ? - c2 1 ctrl i pn ?? acf ?? c3 8 out- o - ? btl- ? 1 i: o: a: ? vdd ?? pn ??? esd pmos nmos ?? pmos ? ? h t x x 4 5 x x ??? ?? ?? ?? ?? ??? HT6845cr wlcsp-9 6845 wxyz *1 -40 85 ?? ? 3000 ? / ht2145mr *2 sop-8 ht2145 uvwxyz *1 -40 85 ?? ? 3000 ? / ht2145mt *2 sop-8 ht2145 uvwxyz *1 -40 85 ?? ? 100 ? / ? 1 wxyz/uvwxyz ?? ? 2 ? sop-8 ????? ht2145mx ?
HT6845 emi d ??? ? ?2010, -3- 03/2010 - v0.1 ? *1 ? ? ?? v dd 0.3 6.0 v ??? (in+, in-) v in v ss 0.6 v dd 0.6 v ??? ( in+, in- ) v in v ss 0.3 v dd 0.3 v ?? t a 40 85 t j 40 150 ? t stg 50 150 ? 1: ????????????????? ?? vdd/gnd ?????????????? ? ? ? ? ?? v dd 2.5 3.6 5.5 v t sd (min.)=50ms 20 ? t a t sd (min.)=80ms 30 25 85 r l 4 ? ? : vdd ?? 1 s ?? dc v ss =0v, v dd =2.5v~5.5v, ta= -40oc~85oc, ? . ? ? ? vdd ?? v uvlh 2.2 v vdd ???? v uvll 2.0 v acf-1 ???? v mod1 1.20 v dd v acf-2 ???? v mod2 0.80 1.10 v acf-off ???? v mod3 0.36 0.68 v sd ????? v mod4 v ss 0.14 v ? i dd v dd =3.6v, ? , ? 4.0 ma ?? i sd ctrl=v ss , ta=25 0.01 a vref ??? v ref v dd /2 v ? v ss =0v, v dd =3.6v, av=18db, ta=25oc, c in =33nf, acf-off ?? , ? , ?? , ? . ? ? ? r l =4 ? , v dd =5v 3.4 (wlcsp) 2.6 (sop) w p o r l =8 ? , v dd =3.6v f=1khz, thd+n=10% 0.91 (wlcsp) 0.81 (sop) w r l =4 ? , p o =0.65w, f=1khz 0.03 % ? thd+n r l =8 ? , p o =0.4w, f=1khz 0.03 % v n f=20hz~20khz, a ? , av=18db 45 v rms snr a ? , av=18db 95 db ?? psrr 217hz 75 db r l =8 ? , p o =0.6w 84 % r l =8 ? , p o =0.1w 78 % ?? v os 20 mv ? f res c in =0.1f, f=100hz~20 hz 3 - 1 db ?? av 0 18 db acf ? aa 10 0 db ? : ??? pcb ? 8 ? 4 ? 30 h ????
HT6845 emi d ??? ? ?2010, -4- 03/2010 - v0.1 ? ac v ss =0v, v dd =2.5 to 5.5v, ta= 30 ~85 , ? . ? ? ? ?? ( ???? ) t stup 32 ms ?? f c c in =33nf, av=18db 169 hz acf-1 ? t at1 v dd =3.6v, g=10db 90 ms acf-1 ?? t rl1 v dd =3.6v, g=10db 2.6 s acf-2 ? t at2 v dd =3.6v, g=10db 20 ms acf-2 ?? t rl2 v dd =3.6v, g=10db 1.2 s ??? t wk 35 ms t a (min.)= -20 50 ?? t sd t a (min.)= -30 80 ms ??? ( ? ) t mod 0.1 ms ?? f pwm 1.0 mhz ? 1 ctrl ????
HT6845 emi d ??? ? ?2010, -5- 03/2010 - v0.1 thd+n vs. output power 0.1 1 10 100 0.01 0.1 1 10 output power (w) thd+n (%) thd+n vs. frequency 0.01 0.1 1 10 0.01 0.1 1 10 100 frequency (khz) thd+n (%) thd+n vs. frequency 0.01 0.1 1 10 0.01 0.1 1 10 100 frequency (khz) thd+n (%) thd+n vs. output power 0.1 1 10 100 0.01 0.1 1 10 output power (w) thd+n (%) thd+n vs. output power 0.1 1 10 100 0.01 0.1 1 10 output power (w) thd+n (%) thd+n vs. output power 0.1 1 10 100 0.01 0.1 1 10 output power (w) thd+n (%) v dd =5v r l =4 ? f =1khz a cf-off v dd =5v r l =8 ? f =1khz a cf-off v dd =3.6v r l =4 ? f =1khz a cf-off v dd =3.6v r l =8 ? f =1khz a cf-off v dd =5v r l =4 ? po = 1w v dd =5v r l =8 ? po = 0.5w
HT6845 emi d ??? ? ?2010, -6- 03/2010 - v0.1 efficiency vs . output power 0 10 20 30 40 50 60 70 80 90 100 0123 4 output power (w) (%) efficiency vs . output power 0 10 20 30 40 50 60 70 80 90 100 00.511.5 output power (w) (%) v dd =5v r l =4 ? +33h acf - of f v dd =5v r l =8 ? +33h acf - of f 2
HT6845 emi d ??? ? ?2010, -7- 03/2010 - v0.1 ?? HT6845 ????????? pwm ?? ???? c in ?? in+ in- ? r in ? 28.5k ? av ?? 18db rc ????? 1 ci n f(2rc = i n ) c in =33nf ?? 169hz ??? c in ? inl+ ? in- ??? c in ???? av ??? f c ?? ???? z out ? 600 ? ? 2 ? 3 ? ? ctrl ?? ctrl ????? 4 ????? 1 acf-1 ?? 2 acf-2 ???? acf-off ???? sd ? 1 ctrl ?????? ? ? ? acf-1 ???? v mod1 1.20 v dd v acf-2 ???? v mod2 0.80 1.10 v acf-off ???? v mod3 0.36 0.68 v sd ???? v mod4 v ss 0.14 v ??? 2 ?? ctrl1 ctrl2 ? r ctrl1 r ctrl 2 r ctrl 3 ?? 1% ???? ctrl ??? ctrl ?? c ctrl ??? R 0.1f ????? ctrl1 ctrl2 ???????? 2 ?? ctrl1 ctrl2 ?? h h acf-1 h gnd acf-2 gnd h acf-off gnd gnd sd ? 4 ??? ctrl h ?? / ??? gnd ???? gnd HT6845 gnd ??? / ???? h ??? 3 ? h ??? ? i/o ? h ? 1.8v 2.6v 3.0v 3.3v 5.0v r ctrl1 27k ? 33k ? 33k ? 33k ? 56k ? r ctrl2 56k ? 68k ? 68k ? 68k ? 120k ? r ctrl3 82k ? 27k ? 22k ? 18k ? 15k ?
HT6845 emi d ??? ? ?2010, -8- 03/2010 - v0.1 ?? acf-2 acf-off ???? ctrl1 ? acf-1 sd ??? v mod1 v mod4 ? ctrl ????? 1ms rc ? r ctrl =10k c ctrl =0.1f 4 ?? ctrl1 ?? h acf-1 gnd sd ? 5 ?? ctrl ( ? ) acf on ?? acf-1 acf-2 ???????? HT6845 ?? ?????????????? ?? HT6845 ???? vdd ?????? ? ?+ ?- ??? ?? ? ?? ? + acf on ? ?? av = av 0 + aa ? av 0 =18db ?+ + ? ?? - ?- - vdd ? acf off acf on ? -10db aa 0 ? ? -10db aa 0 ? av 0 =18db av = av 0 + aa ? 6 acf ??? acf on ???? attack time ?????? acf ??? av 0 ??? 3db ????? release time ???????? av 0 ? HT6845 ?? 10db acf-1 acf-2 ???????? 5 acf-1 acf-2 ?? ?? ? ?? acf-1 ? 90ms 2.6s acf-2 20ms 1.2s
HT6845 emi d ??? ? ?2010, -9- 03/2010 - v0.1 ( ) acf off ?? acf-off ?? acf ??? HT6845 ????? ??C? av=av 0 =18db ?? HT6845 ?? ( ) sd ?? ????????????????? ??? ctrl ???? ctrl ??????? 1 ? ctrl ?? sd ???? ctrl ?? ?? t sd ???? ctrl ??? t stup ????? ???? (1) ?? in+/in- ????? - ? HT6845 ????? ????? vdd ??? t dly ? t dly R c in 33010 3 3 c in =33nf ? t dly R 33ms ? 7 ???? ? (2) ???????? acf-1 ??? HT6845 ?????? t wk ? ctrl1 ctrl2 ? h ?????? acf-off ???? sd ? t mod ? 0.1ms ? 8 ??? (3) ??????????????????? (1)(2) ?
HT6845 emi d ??? ? ?2010, -10- 03/2010 - v0.1 - HT6845 ???????????? ??? - ? click-pop ?? - ? 0.1f ?? c in ?? pop ???????????? ? ??????????????? ? ??????? HT6845 ?????????? 1 ???????????? ??????????????? 2 ???? 150 ??????? ?????? 3?? ?? vdd v uvll 2v ??????????? ? vdd v uvlh 2.2v ???? t stup ??
HT6845 emi d ??? ? ?2010, -11- 03/2010 - v0.1 ?? c s 1f vdd emi pw m ? ? acf ? ? ocp otp uvlo ? out+ out- agnd ctrl c r 1f c ctrl 0.1 f ctrl 1 ctrl 2 vref r ctrl1 r ctrl2 r ctrl3 in+ in- c in 33 nf c in 33 nf HT6845 pgnd c s 1f vdd emi pw m ? ? acf ? ? ocp otp uvlo ? out+ out- agnd ctrl c r 1f c ctrl 0.1 f ctrl 1 ctrl 2 vref r ctrl1 r ctrl2 r ctrl3 in+ in- c in 33 nf c in 33 nf HT6845 pgnd ?? c in ?? 0.1f ? 33nf 10% c in ? - ? 217hz c in ???? c s ???? esr h?? 1f r l =4 ? vdd 4.5v ? ????? esr ? 10f ? vdd ???? 3mm ?? c r vref ? vdd/2 ?? c r 1f ?????
HT6845 emi d ??? ? ?2010, -12- 03/2010 - v0.1 ? 1 2 3 a b c ? p-0.50 1.00 0.23 p-0.50 1.00 0.29 9 0.320.02 0.235 0.02 0.38 0.02 (seating plane ) 1.46 0.02 1.58 0.02 pin a1 ? ? : mm 9 wlcsp a 1.35 1.75 a1 0.10 0.25 a2 1.35 1.55 b 0.33 0.51 c 0.17 0.25 d 4.70 5.10 e 3.80 4.00 e1 5.80 6.20 e 1.27(bsc) l 0.40 1.27 0 8 : mm 8 sop : ? :0755-82863877 13242913995 :0755-82863778 e-mail:panxia168@126.com http://www.szczkjgs.com

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