unisonic technologies co., ltd pa4819 cmos ic www.unisonic.com.tw 1 of 7 copyright ? 2008 unisonic technologies co., ltd qw-r502-241.a 350mw audio power amplifier with shutdown mode ? description as a mono bridged power amplifier which is operating on a single 5v supply, the utc pa4819 is capable of delivering 350mw rms of output power per channel into 16 ? loads with less than 10% thd+n and also delivering 300mw rms of output power per channel into 8 ? loads with less than 10% thd+n. the utc pa4819 is optimally suited for low-power portable applications because of the it do not require output coupling capacitors, bootstrap capacit ors or snubber networks. by using external gain-setting resistors, the closed loop response of the unity-gain stable pa4819 can be configured. ? features * output power at 10% thd+n supply voltage:5v delivering 350mw rms into a 16 ? load delivering 300mw rms into a 8 ? load * with shutdown mode * stable unity-gain. lead-free: pa4819l halogen-free: pa4819g ? ordering information ordering number normal lead free halogen free package packing pa4819-s08-r pa4819l-s08-r pa 4819g-s08-r sop-8 tape reel PA4819-S08-T pa4819l-s08-t pa4819g-s08-t sop-8 tube
pa4819 cmos ic unisonic technologies co., ltd 2 of 7 www.unisonic.com.tw qw-r502-241.a ? pin configuration ? pin description pin no. pin name i/o pin description 1 shutdown i shutdown control input pin. 2 bypass connected to a bypass capacitor. 3 +in i + pin of input signal. 4 -in i - pin of input signal. 5 v oot 1 o output pin1 6 v dd supply voltage 7 gnd gnd 8 v oot 2 o output pin2
pa4819 cmos ic unisonic technologies co., ltd 3 of 7 www.unisonic.com.tw qw-r502-241.a ? absolute maximum rating parameter symbol ratings unit supply voltage v cc 6 v input voltage v in -0.3~v dd +0.3 v power dissipation p d internally limited w junction temperature t j 150 operating temperature t opr -40~+85 storage temperature t stg -65~+150 note: absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? thermal data parameter symbol min typ max unit junction to ambient ja 170 /w junction to case jc 35 /w ? electrical characteristics (t a =25 c, r l =16 ? , unless otherwise specified) parameter symbol test conditions min typ max unit for v dd =3v supply voltage v dd 2.0 5 5.5 v shutdown voltage input high-level v sdih 2.4 v shutdown voltage input low-level v sdil 0.6 v dc differential output voltage v out(diff) v in =0v 5 50 mv mute mode v in =0v, i out =0a 1.0 3.0 ma supply current shutdown mode i dd v pin1 =v dd 0.7 5 a thd=10%, f in =1khz, r l =16 ? , 110 output power p out thd=10%, f in =1khz, r l =8 ? , 90 mw total harmonic distortion+noise thd+n p out =80mw rms , f in =1khz, g=2v/v 1 % for v dd =5v supply voltage v dd 2.0 5 5.5 v shutdown voltage input high-level v sdih 4 v shutdown voltage input low-level v sdil 1 v dc differential output voltage v out(diff) v in =0v 5 50 mv mute mode v in =0v,i out =0a 1.5 3.0 ma supply current shutdown mode i dd v pin1 =v dd 1 5 a thd=10%, f in =1khz, r l =16 ? , 350 output power p out thd=10%, f in =1khz, r l =8 ? , 300 mw total harmonic distortion+noise thd+n p out =270mw rms , f in =1khz, g=2v/v 1 %
pa4819 cmos ic unisonic technologies co., ltd 4 of 7 www.unisonic.com.tw qw-r502-241.a ? block diagram
pa4819 cmos ic unisonic technologies co., ltd 5 of 7 www.unisonic.com.tw qw-r502-241.a ? typical application circuit gnd shutdown -in v out 1 bypass a v =-1 +in v out 2 bias 20k ? 20k ? v dd /2 audio input 20k ? 20k ? r f r in 8 ? r l 0.39f c i 1.0f c b shutdown control v ih v il v dd
pa4819 cmos ic unisonic technologies co., ltd 6 of 7 www.unisonic.com.tw qw-r502-241.a ? typical characteristics 0 time (s) 1600 400 800 1200 0 2 4 output waveform 6 8 -2 -4 -6 -8 2000 v p-p = 6.72 0 time (s) 1600 400 800 1200 0 2 4 output waveform 6 8 -2 -4 -6 -8 2000 v p-p =4.60 v dd =5v, r l =16 f=1khz, thd=10% v dd =5v, r l =8 f=1khz, thd=10%
pa4819 cmos ic unisonic technologies co., ltd 7 of 7 www.unisonic.com.tw qw-r502-241.a utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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