unisonic technologies co., ltd pa301 1 cmos ic www.unisonic.com.tw 1 of 7 copyright ? 2015 unisonic technologies co., ltd qw-r502-247.b 3- w stereo audio power amplifier with advanced dc volume control ? description as a stereo audio speaker which is operating on a single 5.5v supply, the utc pa3011 is capable of delivering 3w of output power per channel into 3 ? loads with less than 10% thd+n. the speaker volume level is adjusted by applying a dc voltage to the volume terminal. when a dc voltage is applied, to avoid an unexpected high volume level through the headphones, a third terminal, semax, limits the headphone volume level. and also a fade mode ramps the volume up and down to ensure a smooth transition between active and shutdown modes,. the utc pa3011 can be applicatated in notebook, lcd monitors and pocket pc. ? features * dc volume control with 2-db steps :-40 db ~ 20 db * fade mode * maximum volume setting for se mode * 3 w into 3 ? load * mux stereo input ? ordering information ordering number package packing pa3011g-n24-r htssop-24 tape reel pa3011g-n24-r (1)packing type (2)package type (1) r: tape reel (2) n24: htssop-24 (3) g: halogen free and lead free (3)green package ? marking
pa3011 cmos ic unisonic technologies co., ltd 2 of 7 www.unisonic.com.tw qw-r502-247.b ? pin configuration 1 2 3 4 5 6 7 8 9 10 pgnd r out- pv dd rhpin rlinein r in v dd l in llinein lhpin 24 r out+ se/btl volume sediff semax agnd bypass fade shutdown 23 22 21 20 19 18 17 16 15 11 pv dd 12 l out- 14 l out+ 13 pgnd hp/line pa3427 ? pin description pin # pin name i/o description 1,13 pgnd ground, directly connected to thermal pad. 12 l out- o negative output for left channel 3,11 pv dd supply voltage 10 lhpin i left channel headphone input, selected when hp/ line pin is held high. 9 llinein i line input for left channel, selected when hp/ line pin is held low. 8 l in i differential input for left channel. ac ground for single-ended inputs. 7 v dd analog v dd supply voltage 6 r in i differential input for right channel. ac ground for single-ended inputs. 5 rlinein i line input for right channel, selected when hp/ line pin is held low. 4 rhpin i right channel headphone input, selected when hp/ line pin is held high. 2 r out- o negative output for right channel. 24 r out+ o positive output for right channel. 15 shutdow i circuit is in shutdown mode when this pin is held low. 16 fade i if a logic low is placed on this terminal places the amplifier in fade mode; if a logic high is placed on this terminal normal operation 17 bypass i tap to voltage divider for internal midsupply bias generator 18 agnd analog ground 19 semax i this sets the maximum volume for single ended operation. the dc voltage range is 0 to v dd. 20 sediff i this sets the difference between btl volume and se volume. the dc voltage range is 0 to v dd . 21 volume i dc volume control. the dc voltage range is 0 to v dd. 22 hp/ line i mux control input, hold high to select headphone inputs, hold low to select line inputs. 23 se/ btl i hold low for btl mode, hold high for se mode. 14 l out+ o positive output for left channel.
pa3011 cmos ic unisonic technologies co., ltd 3 of 7 www.unisonic.com.tw qw-r502-247.b ? absute maximum ratings (t a =25c) parameter symbol ratings unit supply voltage, v dd , pv dd v ss -0.3v ~ 6v v input voltage v in -0.3 v ~ v dd +0.3v v junction temperature t j -40 ~ +150 c operating temperature t opr -40 ~ +85 c storage temperature range t stg -65 ~ +150 c 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. ? electrical characteristics (t a =25c , unless otherwise specified) parameter symbol conditions min typ max unit dc characteristics (v dd =pv dd =5.5v) supply voltage v dd 4.0 5.5 v high-level input voltage v ih se/ btl , hp/ line, fade 0.8v dd v shutdown 2 low-level input voltage v il se/ btl , hp/ line, fade 0.6v dd v shutdown 0.8 high-level input current (se/ btl , | i ih | v in =v dd =pv dd 1 a fade , hp/ line , shutdown , sediff,semax,volume) low-level input current (se/ btl , | i il | v in =0v 1 a fade , hp/ line , shutdown , sediff,semax,volume) supply current, no load i dd se/ btl =0v, shutdown=2v 6.0 7.5 9.0 ma se/ btl =5.5v, shutdown =2v 3.0 5 6 supply current, shutdown mode i dd(sd) shutdown =0v 1 20 a dc differential output voltage v out(diff) gain=0db, se/ btl =0v 30 mv gain=20db, se/ btl =0v 50 ac characteristics( v dd =pv dd =5v, r l =3 ? , gain=6db) bypass voltage (nominally v dd /2) v ( b yp ass ) measured at pin17, no load 2.65 2.75 2.85 v high-level output voltage v oh r l =8 ? , measured between output and v dd 700 mv low-level output voltage v ol r l =8 ? , measured between output and gnd 400 mv output power p out thd=1%, f=1khz 2 w thd=10%, f=1khz, v dd =5.5v 3 total harmonic distortion + noise thd+n p out =1w, r l =8 ? , f=20hz~20khz <0.4% maximum output power bandwidth b om thd=5% >20 khz power supply rejection ratio psrr v dd =pv dd =4.0v~5.5v -42 -70 db supply ripple rejection ratio rr f=1khz, gain=0db, c (byp) =0.4f btl -63 db se -57 noise output voltage en gain=0db, c (byp) =0.47f f=20hz~20khz btl 36 v rms supply current, max power into a 3- ? load i dd shutdown =2v, r l =3 ? , 1.5 a rms se/ btl =0v, p out =2w
pa3011 cmos ic unisonic technologies co., ltd 4 of 7 www.unisonic.com.tw qw-r502-247.b ? typical application circuit
pa3011 cmos ic unisonic technologies co., ltd 5 of 7 www.unisonic.com.tw qw-r502-247.b ? block application
pa3011 cmos ic unisonic technologies co., ltd 6 of 7 www.unisonic.com.tw qw-r502-247.b ? volume control table btl mode, v dd =5v(note 1) se mode v dd =5v(note 1) volume (pin21) gain of amplifier (typ) se_volume=volume ? sediff or semax gain of amplifier (typ) from(v) to(v) from(v) to(v) 0.00 0.26 -85(note 2) 0.00 0.26 -85(note 2) 0.33 0.37 -40 0.33 0.37 -46 0.44 0.48 -38 0.44 0.48 -44 0.58 0.59 -36 0.56 0.59 -42 0.67 0.70 -34 0.67 0.70 -40 0.78 0.82 -32 0.78 0.82 -38 0.89 0.93 -30 0.89 0.93 -36 1.01 1.04 -28 1.01 1.04 -34 1.12 1.06 -26 1.12 1.16 -32 1.23 1.27 -24 1.23 1.27 -30 1.35 1.38 -22 1.35 1.38 -28 1.48 1.49 -20 1.48 1.49 -26 1.57 1.60 -18 1.57 1.60 -24 1.68 1.72 -16 1.68 1.72 -22 1.79 1.83 -14 1.79 1.83 -20 1.91 1.94 -12 1.91 1.94 -18 2.02 2.06 -10 2.02 2.06 -16 2.13 2.17 -8 2.13 2.17 -14 2.25 2.28 -6(note 2) 2.25 2.28 -12 2.38 2.39 -4 2.36 2.39 -10 2.47 2.50 -2 2.47 2.50 -8 2.58 2.61 0 2.58 2.61 -6(note 2) 2.70 2.73 2 2.70 2.73 -4 2.81 2.83 4 2.81 2.83 -2 2.92 2.95 6 2.92 2.95 0(note 2) 3.04 3.06 8 3.04 3.06 2 3.15 3.17 10 3.15 3.17 4 3.28 3.29 12 3.26 3.29 6(note 2) 3.38 3.40 14 3.38 3.40 8 3.49 3.51 16 3.49 3.51 10 3.60 3.63 18 3.60 3.63 12 3.71 5.00 20(note 2) 3.71 5.00 14 note: 1. for other values of v dd , scale the voltage values in the table by a factor of v dd /5. 2. tested in production. remaining ga in steps are specified by design.
pa3011 cmos ic unisonic technologies co., ltd 7 of 7 www.unisonic.com.tw qw-r502-247.b ? typical characteristics time (s) output waveform time (s) output waveform -2 01600 400 800 1200 2000 0 4 2 -4 -2 0 4 2 v dd =5.5v, r l =3 ? , thd=10% v rms =2.71v -4 v rms =2.71v -5 0 1600 400 800 1200 2000 0 5 v dd =5v, r l =3 ? , p out =1w -5 0 5 v rms =2.83v v rms =2.83v 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 writ ten 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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