ly8601 rev. 1.4 dual 0.1w headphone amplifier with active-high shutdown mode lyontek inc. reserves the rights to change the specifications and products without notice. 5f, no. 2, lndustry e . rd. ix, science-ba sed industrial park, hsinchu 300, taiwan tel: 886-3-6668838 fax: 886-3-6668836 1 ? features ? 2.5v~5.5v power supply. ? thermal shutdown protection. ? low current shutdown mode ? "click and pop" suppression ? no bootstrap capacitors required ? low noise during turn-on and turn-off transitions ? active-high shutdown mode ? lead free and green package available. (rohs compliant) ? space saving package -- 8-pin msop package. application ? portable electronic devices ? mobile phones ? microphone preamplifier ? pda?s general description the ly8601 is a dual 0.1w audio power amplifier. it is capable of driving 16 load at a continuous average output of 0.1w/0.1% distortion (thd+n) from a 5.0v power supply. the ly8601 primarily designed for high quality application in other portable communication device. and the ly8601 audio amplifier features low power consumption shutdown mode. it is achieved by driving the shutdown pin with logic high and it has an internal thermal shutdown protection feature. the unity-gain stable ly8601 can be configured by external gain-setting resistors. the ly8601 audio amplifier was designed specifically to provide high quality output power with a minimal amount of external components. the ly8601 does not require bootstrap capacitors, and the ly8601 is ideally suited for other low voltage applications or portable electronic devices where minimal power consumption is a primary requirement. pin configuration
ly8601 rev. 1.4 dual 0.1w headphone amplifier with active-high shutdown mode lyontek inc. reserves the rights to change the specifications and products without notice. 5f, no. 2, lndustry e . rd. ix, science-ba sed industrial park, hsinchu 300, taiwan tel: 886-3-6668838 fax: 886-3-6668836 2 ? pin description pin no. symbol msop description vo1 1 audio output of left channel. in1 2 audio input of left channel. bypass 3 bypass pin gnd 4 ground shutdown 5 shutdown pin.(when active high is shutdown mode) in2 6 audio input of right channel. vo2 7 audio output of right channel. v dd 8 power supply application circuit figure 1. typical audio amp lifier application circuit
ly8601 rev. 1.4 dual 0.1w headphone amplifier with active-high shutdown mode lyontek inc. reserves the rights to change the specifications and products without notice. 5f, no. 2, lndustry e . rd. ix, science-ba sed industrial park, hsinchu 300, taiwan tel: 886-3-6668838 fax: 886-3-6668836 3 ? absolute maximun ratings* parameter symbol rating unit supply voltage v dd 6.0 v operating temperature t a -40 to 85 (i grade) input voltage v i -0.3v to v dd +0.3v v storage temperature t stg -65 to 150 power dissipation p d internally limited w esd susceptibility v esd 2000 v junction temperature t jmax 150 soldering temperature (under 10 sec) t solder 260 dc electrical characteristics (v dd =5v, t a =25 ) parameter symbol test condition min. typ. max. unit v i n = 0v, i o = 0a, no load - 3.5 9.0 ma power supply current i dd v i n = 0v, i o = 0a, 8 load - 4.0 10.0 ma shutdown current i sd v shutdow n = v dd - 0.1 2.0 a shutdown voltage input high v sdih 0.8xv dd - - v shutdown voltage input low v sdil - - 0.2xv dd v output offset voltage v os - 7.0 50.0 mv thd+n=0.1%,f =1khz,r l =8 258 thd+n=0.1%,f =1khz,r l =16 114 output power po thd+n=0.1%,f =1khz,r l =32 93 mw total harmonic distortion+ noise thd+n po = 50mw; r l = 3 2 f = 20hz to 20khz - 0.4 % power supply rejection ratio psrr c b =1.0uf,vripple = 200mvpp f = 1khz, input terminated with 50 . - 66 - db thermal shutdown temperature t sd 150 170 190
ly8601 rev. 1.4 dual 0.1w headphone amplifier with active-high shutdown mode lyontek inc. reserves the rights to change the specifications and products without notice. 5f, no. 2, lndustry e . rd. ix, science-ba sed industrial park, hsinchu 300, taiwan tel: 886-3-6668838 fax: 886-3-6668836 4 ? dc electrical characteristics (v dd =3v, t a =25 ) parameter symbol test condition min. typ. max. unit v i n = 0v, i o = 0a, no load - 3.0 8.0 ma power supply current i dd v i n = 0v, i o = 0a, 8 load - 3.5 9.0 ma shutdown current i sd v shutdow n = v dd - 0.1 2.0 a shutdown voltage input high v sdih 0.8xv d d - - v shutdown voltage input low v sdil - - 0.2xv dd v output offset voltage v os - 7.0 50.0 mv thd+n=0.1%,f =1khz,r l =8 105 thd+n=0.1%,f =1khz,r l =1 6 73 output power po thd+n=0.1%,f =1khz,r l =3 2 35 mw total harmonic distortion+ noise thd+n po = 25mw; r l = 3 2 f = 20hz to 20khz - 0.4 % power supply rejection ratio psrr c b =1.0uf,vripple = 200mvpp f = 1khz, input terminated with 50 . 62 - db thermal shutdown temperature t sd 150 170 190 ordering information ly 8 601 vv v : package type ul : 8-pin msop product name a : product line ly : lyontek product number prefix
ly8601 rev. 1.4 dual 0.1w headphone amplifier with active-high shutdown mode lyontek inc. reserves the rights to change the specifications and products without notice. 5f, no. 2, lndustry e . rd. ix, science-ba sed industrial park, hsinchu 300, taiwan tel: 886-3-6668838 fax: 886-3-6668836 5 ? package outline dimension 8 pin msop package outline dimension
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