SA7411 hangzhou?silan?microelectronics?co.,ltd ?rev:1.0???????2005.07.11 http:?www.silan.com.cn????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?1?of?4 block?diagram absolute?maximum?ratings (t amb =25 c,?unless?otherwise?specified) characteristic symbol value unit storage?temperature t stg -55?~?+150 c operating?ambient?temperature t opr -25?~?+70 c operating?ambient?pressure p opr 1.01310 5 ??0.6110 5 pa operating?constant?acceleration g opr 9810 m/s 2 operating?shock s opr 4900 m/s 2 supply?voltage v cc 14 v supply?current i cc 1.5 a power?current p d 422 mw operating?supply?voltage?range v cc 7.5?~?13.5 v 1-ch?audio?power?amplifier(1w) description SA7411? is ? a? single? channel? audio? power? amplifier? capable? of delivering?1w?of?maximum?output?power?to?a?8 w ?load?using?a?single?9v supply?at?10%?thd. features *?max?power?1w *?single?supply?operation *?integrated?standby?and?mute?function *?internal?thermal?protection applications *?audio?power?amplifier?with?high?performance *?tv *?monitor sop-8-225-1.27 dip-8-300-2.54 ordering?information device package SA7411 dip-8-300-2.54 SA7411s sop-8-225-1.27
SA7411 hangzhou?silan?microelectronics?co.,ltd ?rev:1.0???????2005.07.11 http:?www.silan.com.cn????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?2?of?4 electrical?characteristics (unless?otherwise?specified:?v cc =?9v;?r l ?=8 w ,?t amb ?=25 c,?f?=1khz) pin?configuration pin?descriptions pin?no. pin?name pin?description 1 input input?pin 2 stby/mute? standby?and?mute 3 rf ripple?rejection 4 gnd signal?ground 5 vcc voltage?of?supply 6 output output?pin 7 pw_gnd power?ground 8 nc not?connect characteristics symbol test?condition min. typ. max. unit quiescent?current i cq stby/mute=3.3v;?no?input -- 13 40 ma standby?current i stb ? stby/mute?=0v;?no?input -- 5 50 a stand-by?on?voltage v stb-on ? no?input -- -- 0.4 v stand-by?off?voltage v stb-off ? no?input 1.2 -- -- v output?end?noise?voltage v no stby/mute?=3.3v;?no?input; rg=10k w -- 0.25 0.5? mvrms ripple?rejection?ratio r r stby/mute?=3.3v;?rg=10k w ; vripple=1vrms;?fripple=120hz 30 50 -- db voltage?gain g v stby/mute?=3.3v;?po=0.25w 31.5 33.5 35.5 db total?harmonic?distortion thd? stby/mute?=3.3v;?po=0.25w -- 0.15 0.5 % maximum?output?power p o stby/mute?=5.0v; thd=10%;?v ol =3.3v 0.8 1.0 -- w muting?ratio m r stby/mute=2.0v?to?2.7v 65 75 -- db mute?on?voltage mute-on mr 1 65db -- -- 2 v mute?off?voltage mute-off gv 1 31.5db 2.7 -- -- v under?voltage?lock?up uvlo stby/mute?=3.3v;?icq<1ma; no?output -- 6.0 6.3 v
SA7411 hangzhou?silan?microelectronics?co.,ltd ?rev:1.0???????2005.07.11 http:?www.silan.com.cn????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?3?of?4 function?descriptions 1. standby?and?mute?function the?pin2?(stby/mute)?controls?the?amplifier?status?by?three?different?thresholds: ? ? when?vpin2?is?between?0v?and?0.4v,?the?bias?of?amplifier?is?off?and?the?amplifier?is?in?standby?mode. ? ? when?vpin2?is?between?1.2v?and?2.0v,?the?bias?of?amplifier?is?on?but?the?gain?of?the?circuit?is?zero.?the amplifier?is?in?mute?mode. ? ? when?vpin2?is?between2.7v?and?3.3v,?the?amplifier?is?play?mode. 2. ripple?rejection ground?the?rf?so?that?there?will?be?no?difference?in?electric?potential?between?the?rf?and?ground. 3. thermal?protection the? thermal? protection? circuit? operates? at? a?tj? of? approximately? 145 c.? the? thermal? protection? circuit? is reset?automatically?when?the?temperature?drops. 4. absence?of?short?protection make?sure?that?the?ic?is?free?of?output?pin?short?to?ground,?output?pin?short?to?vcc,?ic?mount?in?reverse direction?and?load?short?because?there?is?no?such?protection?in?the?ic.?the?ic?will?be?damaged?under?such conditions?and?smoke?may?be?observed. application?circuit s a 7 4 1 1
SA7411 hangzhou?silan?microelectronics?co.,ltd ?rev:1.0???????2005.07.11 http:?www.silan.com.cn????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?4?of?4 package?outline dip-8-300-2.54 unit:?mm sop-8-225-1.27 unit:?mm 5.0 0.3 1. 27 0.42 0. 15 0. 10 0. 20 0. 05
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