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unisonic technologies co., ltd lm4863 cmos ic www.unisonic.com.tw 1 of 11 copyright ? 2007 unisonic technologies co., ltd qw-r107-027.d dual 2.2w audio amplifier plus stereo headphone function ? description the utc lm4863 is a dual bridge-connected audio power amplifier. it combines dual br idge speaker amplifiers and stereo headphone amplifiers on one chip to simplify audio system design. in addition, the headphone input pin allows the amplifiers to operate in single-ended mode when driving stereo headphones. the ic could deliver different power by packages as below (when connected to a 5v supply wi th less than 1.0% thd+n.): - htssop-20, 4 ? load: 2.2w - htssop-20, 3 ? load: 2.5w(with forced-air cooled) - sop/dip , 8 ? load: 1.1w. the utc lm4863 features an externally controlled, low-power consumption shutdown mode, a stereo headphone amplifier mode, and thermal shutdown protection. it also utilizes circuitry to reduce ?clicks and pops? during device turn-on. ? features * ?click and pop? suppression circuitry * thermal shutdown protection circuitry * unity-gain stable * stereo headphone amplifier mode *pb-free plating product number: lm4863l ? ordering information ordering number normal lead free plating package packing LM4863-D16-T lm4863l-d16-t dip-16 tube lm4863-s18-r lm4863l-s18-r sop-18 tape reel lm4863-s18-t lm4863l-s18-t sop-18 tube lm4863-n20-r lm4863l-n20-r htssop-20 tape reel lm4863-n20-t lm4863l-n20-t htssop-20 tube
lm4863 cmos ic unisonic technologies co., ltd 2 of 11 www.unisonic.com.tw qw-r107-027.d ? pin configuration shutdown gnd +out a v dd -out a -in a gnd +in a +in b bypass -in b -out b v dd +out b gnd hp-in dip-16 1 2 3 14 13 12 11 10 15 16 9 4 5 6 7 8 shutdown gnd +out a v dd -out a -in a gnd +in a +in b bypass -in b -out b v dd +out b gnd hp-in gnd gnd 3 4 5 6 7 8 9 14 13 12 11 10 15 16 2 17 1 18 sop-18 ? pin description pin no. dip-16 sop-18 htssop-20 pin name i/o pin description 4,13 4,15 4,17 v dd - supply voltage 2,7,15 2,7,9,10,17 2,7,9,10,11,12,19 gnd - ground 10 12 14 bypass - internal mid-suppl y bias reference bypassing 1 1 1 shutdown i entire ic into the shutdown mode when this pin connected t o the v dd 16 18 20 hp-in i output mode select, connected to the v dd for se mode or gnd for btl mode 8 8 8 +ina i non-inverting input of cha nnel a, connected to bypass pin inside the ic 6 6 6 -ina i inverting input of channel a 3 3 3 +outa o channel a + output in btl mode, high impedance in se mode 5 5 5 -outa o channel a - output in btl mode, + output in se mode 9 11 13 +inb i non-inverting input of cha nnel b, connected to bypass pin inside the ic 11 13 15 -inb i inverting input of channel b 14 16 18 +outb o channel b + output in btl mode, high impedance in se mode 12 14 16 -outb o channel b - output in btl mode, + output in se mode
lm4863 cmos ic unisonic technologies co., ltd 3 of 11 www.unisonic.com.tw qw-r107-027.d ? absolute maximum ratings parameter symbol ratings unit supply voltage v dd 6.0 v recommended supply voltage range v dd 2.0 ~ 5.5 v input voltage v in -0.3 ~ v dd +0.3 v power dissipation p d internally limited junction temperature t j +125
operating temperature t opr -40 ~ +85
storage temperature t stg -65 ~ +150
note absolute maximum ratings are those values be yond 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 ratings unit sop-18 90
/w dip-16 63
/w thermal resistance (junction to ambient) htssop-20 ja 90
/w sop-18 2
/w dip-16 20
/w thermal resistance (junction to case) htssop-20 jc 2
/w ? electrical characteristics ( notes 1 ) (v dd =5v, ta =25 ,
unless otherwise specified) parameter symbol test conditions mim typ max unit for entire ic supply voltage v dd 2 5.5 v high v ih 4 v headphone input voltage low v il 0.8 v v in =0v, i out =0a, hp-in=0v 6 11.5 20 quiescent power supply current (note 2) i dd v in =0v, i out =0a, hp-in=4v 5.8 ma shutdown current i sd v dd applied to the shutdown pin 2 0.7 a for bridged-mode operation output offset voltage v o(off) v in =0v 5 50 mv r l =3 ? 2.5 thd=1%, f=1khz r l =4 ? 2.2 r l =3 ? 3.2 htssop-20 thd+n=10%, f=1khz r l =4 ? 2.7 w thd=1%, f=1khz r l =8 ? 1.0 1.1 thd+n=10%, f=1khz r l =8 ? 1.5 w output power (measured at the device terminals) sop/dip p out thd+n=1%, f=1khz, rl=32 ? 0.34 w htssop-20 r l =4 ? , p out =2w 0.3 total harmonic distortion + noise sop/dip thd+n 20hz f 20khz, a vd =2 r l =8 ? , p out =1w 0.3 % power supply rejection ratio psrr v dd =5v, v ripple =200mv rms , r l =8 ? , c b =1.0f 67 db channel separation x talk f=1khz, c b =1.0f 90 db signal to noise ratio snr v dd =5v, p out =1.1w, r l =8 ? 98 db
lm4863 cmos ic unisonic technologies co., ltd 4 of 11 www.unisonic.com.tw qw-r107-027.d ? electrical characteristics(cont.) parameter symbol test conditions mim typ max unit for single-ended operation output offset voltage v o(off) v in =0v 5 50 mv thd=0.5%, f=1khz, r l =32 ? 75 85 thd+n=1%, f=1khz, r l =8 ? 340 output power p out thd+n=10%, f=1khz, r l =8 ? 440 mw total harmonic distortion + noise thd+n a v =-1, p out =75mw,20hz f 20khz, r l =32 ? 0.2 % power supply rejection ratio psrr c b =1.0f, v ripple =200mv rms, f=1khz 52 db channel separation x talk f=1khz, c b =1.0f 60 db signal to noise ratio snr v dd =5v, p out =340mw, r l =8 ? 95 db note:1 . all voltages are measured with respect to the ground (gnd) pins, unless otherwise specified. 2. depends on the offset voltage when a prac tical load is connected to the amplifier. 3. when driving 3 ? or 4 ? and operating on a 5v supply, the ht ssop-20 package must be mounted to the circuit board that has a minimum of 2.5 in 2 of exposed, uninterrupted c opper area connected to the exposed-dap.
lm4863 cmos ic unisonic technologies co., ltd 5 of 11 www.unisonic.com.tw qw-r107-027.d ? typical application circuit sleeve amp 1a v dd c s 0.1 f tant r f 20k $ r i 20k $ audio input c i 1f - + 20k $ 20k $ 20k $ -out a 5 3 +out a r l 8 $ c o 100 f + 1k $ to hp-in circuit 50k $ 50k $ v dd /2 -in a +in a bypass -in b +in b shutdown 1 16 gnd 2,7,15 100k $ 20k $ r f 20k $ c i 1f audio input 100k $ v dd to control pin on headphone jack 20k $ 20k $ 20k $ -out b +out b 12 14 r l 8 $ + 1k $ control pin headphone jack tip 10 11 9 8 6 4,13 amp 1b - + amp 2a - + amp 2b - + hp-in ring c b (cb size) 0.33f + r i c o 100 f note: pin out shown for dip-16. re fer to the pin configuration for the pin out of other packages. figure 1.typical audio ampl ifier application circuit ? external components description components functional description r i the inverting input resistance, along with r f , set the closed-loop gain. r i , along with c i form a high pass filter with fc=1/(2 4 r i c i ) c i the input coupling capacitor blocks dc volta ge at the amplifier?s input terminals. c i , along with r i , create a high pass filter with fc=1/(2 4 r i c i ). refer to the section. selecting proper external components, for an explanation of determine the value of c i . r f the feedback resistance, along with r i , set the closed-ioop gain. c s the supply bypass capacitor. refer to the power supply bypassing section for information about properly placing and selecting the value of, this capacitor. c b the capacitor, c b , filters the half-supply voltage present on the bypass pin. refer to the selecting proper external components section for information concerning proper placement and selecting c b ?s value.
lm4863 cmos ic unisonic technologies co., ltd 6 of 11 www.unisonic.com.tw qw-r107-027.d ? typical characteristics (for htssop-20) thd+n (%) thd+n (%) thd+n vs output power thd+n (%) 10m 0.01 0 1 10 0.1 0.1 13 level (w) thd+n vs frequency thd+n (%) 20 0.01 0 1 10 0.1 100 1k 10k 20k 20hz v dd =5v, r l =4 $ bw<80khz 20khz 1khz v dd =5v, r l =4 $ p out =2.0w, bw<80khz frequency (hz) power dissipation (w)
lm4863 cmos ic unisonic technologies co., ltd 7 of 11 www.unisonic.com.tw qw-r107-027.d ? typical characteristics(cont.) (for dip-16 and sop-18) thd+n (%) thd+n(%) thd+n (%) thd+n (%) thd+n (%) thd+n (%)
lm4863 cmos ic unisonic technologies co., ltd 8 of 11 www.unisonic.com.tw qw-r107-027.d ? typical characteristics(cont.) thd+n vs output power thd+n (%) 10m 0.01 1 10 0.1 0.1 12 level (w) thd+n vs frequency thd+n (%) 20 0.01 1 10 0.1 100 1k 10k 20k v dd =-3.3v, a vd = -2 r l =4 $ f=20hz f=1khz v dd =3.3v, a vd =-2 p out =750mw, r l =4 $ f=20khz frequency (hz) thd+n (%) thd+n (%) 0 10 0 800 1000 600 20 output power vs load resistance 400 30 load resistance ( ? ) 200 40 0 250 0 600 800 400 500 power dissipation vs supply voltage 200 750 1000 power out (mw) thd+n=10% v dd =3.3v, a v = -1 f=1khz, bw<80khz thd+n=1% v dd =3.3v single-ended 8 ? 4 ? 16 ?
lm4863 cmos ic unisonic technologies co., ltd 9 of 11 www.unisonic.com.tw qw-r107-027.d ? typical characteristics(cont.) output power (w) output power (w) output power (w) output power (w) 0 10 0 1 40 output power vs load resistance 70 0.8 0.6 0.4 0.2 v dd =5v f=1khz a v =-1 single ended bw<80khz 1% thd+n 10% thd+n 20 30 50 60 load resistance ( ? ) 2 2.5 0 0.7 0.75 output power vs supply voltage 1.25 output power (w) 0.6 0.5 0.4 0.3 0.2 r l =16 ? 0.5 1 v dd =5v f=1khz thd+n ? 1.0% bridged load bw<80khz r l =32 ? r l =8 ? 0.1
lm4863 cmos ic unisonic technologies co., ltd 10 of 11 www.unisonic.com.tw qw-r107-027.d ? typical characteristics(cont.) power dissipation (w) output noise voltage ( v) output level (db) output level (db) psrr (db) gain (db) phase ( ) o
lm4863 cmos ic unisonic technologies co., ltd 11 of 11 www.unisonic.com.tw qw-r107-027.d ? typical characteristics(cont.) 2 2.5 15 4 supply current vs supply voltage 5.5 supply voltage (v) supply current (ma) 12 9 6 v in =0v no load bridged (hp-in=gnd) single-ended (hp-in=v dd ) 3 3 3.5 4.5 5 0 dropout voltage ( v ) 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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