unisonic technologies co., ltd pa4990 cmos ic www.unisonic.com.tw 1 of 8 copyright ? 2009 unisonic technologies co., ltd qw-r502-235.d 1.2w audio power amplifier with active-low shutdown mode ? description as a power amplifier which is operating on a single 5v supply, the utc pa4990 is capable of delivering 1.2w of output power into 8 ? loads with less than 1% distortion. the utc pa4990 is optimally suited for applications: mobile phones (cellular/cordless), notebo ok computers pdas and portable audio devices. the shutdown mode can reduce the supply current to less than 10na. it also includes thermal shutdown protection internally. by external gain setting resistors the gain can be configured. ? features * operating: v cc =2.2v ~ 5.5v * 1.2w output power, v cc =5v, thd=1%, f=1khz, 8 ? load * in shutdown mode: ultra-low consumption (10na) * in grounded mode: 62db psrr @ 217hz * pop & click near-zero * ultra-low distortion :0.1% (typ) lead-free: pa4990l halogen-free:pa4990g ? ordering information ordering number normal lead free halogen free package packing PA4990-S08-R pa4990l-s08-r pa 4990g-s08-r sop-8 tape reel pa4990-sm1-r pa4990l-sm1-r pa4990g-sm1-r msop-8 tape reel
pa4990 cmos ic unisonic technologies co., ltd 2 of 8 www.unisonic.com.tw qw-r502-235.d ? pin configuration ? pin description pin no pin name description 1 shutdown shutdown control input pin. 2 bypass connected to a bypass capacitor. 3 +in + pin of input signal. 4 -in - pin of input signal. 5 v out 1 output pin1 6 v dd supply voltage 7 gnd gnd 8 v out 2 output pin2
pa4990 cmos ic unisonic technologies co., ltd 3 of 8 www.unisonic.com.tw qw-r502-235.d ? absolute maximum rating parameter symbol ratings unit supply voltage v dd 6 v input voltage v in gnd ~ v dd 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 150 /w junction to case jc 35 /w ? electrical characteristics (t a =25 c, gnd=0v, r l =8 ? , unless otherwise specified) v dd =2.6v parameter symbol test conditions min typ max unit supply voltage v dd 2.2 5.5 v output offset voltage v os no input signal 1 10 mv high 1.2 shutdown voltage low v st 0.4 v supply current i dd no input signal, no load 3.1 6 ma shutdown current 1 shutdown i no input signal, v stdby =gnd 10 1000 na output power p out thd=1% max, f in =1khz 220 300 mw total harmonic distortion+noise thd+n p out =200mw rms , av=2, 20hz f 20khz 0.1 % f=217hz 55 60 power supply rejection ratio psrr av=2, v ripple =200mvpp, input grounded f=1khz 55 62 db wake-up time t wu cb=1 f, no load 125 150 ms shutdown time t stdb cb=1 f, no load 10 s v dd = 3.3v parameter symbol test conditions min typ max unit supply voltage v dd 2.2 5.5 v output offset voltage v os no input signal 1 10 mv high 1.2 shutdown voltage low v st 0.4 v supply current i dd no input signal, no load 3.3 6 ma shutdown current shutdown i no input signal, v stdby =gnd 10 1000 na output power p out thd=1% max, f in =1khz 375 500 mw total harmonic distortion+noise thd+n p out =400mw rms , av=2, 20hz f 20khz, 0.1 % f=217hz 55 61 power supply rejection ratio psrr av=2, v ripple = 200mvpp, input grounded f=1khz 55 63 db wake-up time t wu cb=1 f, no load 110 140 ms shutdown time t stdb cb=1 f, no load 10 s
pa4990 cmos ic unisonic technologies co., ltd 4 of 8 www.unisonic.com.tw qw-r502-235.d ? electrical characteristics(cont.) v dd =5v parameter symbol test conditions min typ max unit supply voltage v dd 2.2 5.5 v output offset voltage v os no input signal 1 10 mv high 1.3 shutdown voltage low v st 0.4 v supply current i dd no input signal, no load 3.7 6 ma shutdown current shutdown i no input signal, v stdby =gnd 10 1000 na output power p out thd=1% max, f in =1khz 0.9 1.2 w total harmonic distortion+noise thd+n p out =1w rms , av=2, 20hz f 20khz, 0.2 % f=217hz 55 62 power supply rejection ratio psrr av=2, v ripple =200mv pp , input grounded f=1khz 55 64 db wake-up time t wu cb=1 f, no load 90 130 ms shutdown time t stdb cb=1 f, no load 10 s
pa4990 cmos ic unisonic technologies co., ltd 5 of 8 www.unisonic.com.tw qw-r502-235.d ? block diagram
pa4990 cmos ic unisonic technologies co., ltd 6 of 8 www.unisonic.com.tw qw-r502-235.d ? typical application circuit gnd shutdown -in v out 1 bypass a v =-1 +in v out 2 bias audio input r f r in 8 ? r l c i c b shutdown control v dd c s v dd
pa4990 cmos ic unisonic technologies co., ltd 7 of 8 www.unisonic.com.tw qw-r502-235.d ? typical characteristics
pa4990 cmos ic unisonic technologies co., ltd 8 of 8 www.unisonic.com.tw qw-r502-235.d 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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