esmt ad5165a elite semiconductor memory technology inc. publication date: feb. 2008 revision: 1.1 1/15 2.5w mono filter-less class-d audio amplifier features z supply voltage range: 2.5 v to 5.5 v z support single-ended or differential analog input z low static operation current z low shut-down current z short power-on transient time(1ms) z internal pull-low resistor on shut-down pins z short-circuit protection z over-temperature protection z loudspeaker power within 10% thd+n ? 1.5w/ch into 8 loudspeaker ? 2.5w/ch into 4 loudspeaker z loudspeaker efficiency ? 90% @ 8 , thd+n=10% ? 85% @ 4 , thd+n=10% applications z monitor audio z pda z portable multimedia devices z notebook computer z mobile phone description the ad5165a is a mono, filter-less class-d audio amplifier. operating with 5.0v loudspeaker driver supply, it can deliver 2.5w output power into 4 loudspeaker within 10% thd+n. the ad5165a is a mono audio amplifier with high efficiency and suitable for the notebook computer, and portable multimedia devices. ordering information part number package comments AD5165A-HG dfn 8l pb-free ad5165a-wg wcsp 9l pb-free functional block diagram pwm generator loudspeaker driver + - + - ~300k ~300k overload, voltage & thermal protection -wave generator ~300k vdd inp inn pwma pwmb sd# r in r in c in c in differential input + - gain=300k /r in thermal pad; gnd c s
esmt ad5165a elite semiconductor memory technology inc. publication date: feb. 2008 revision: 1.1 2/15 pin assignments dfn 8l, 3x3mm wcsp 9l, 1.45x1.45mm (top view of pcb) (top view of pcb) 1 2 3 4 8 7 6 5 9: thermal pad sd nc inp inn pwmb vdd gnd pwma pin description name pin typ description dfn wcsp sd 1 c2 i shutdown ad5165a (low active logic) inp 3 a1 i positive differential input inn 4 c1 i negative differential input pwma 5 c3 o positive output vdd 6 b1, b2 p power supply gnd 7 a2, b3 g power ground pwmb 8 a3 o negative output nc 2 n/a no internal connection thermal pad 9 (note 1) n/a g must be connected the thermal pad of dfn package to gnd. note1: the thermal pad is at the bottom of package. to solder the thermal pad to pcb?s ground plane is must be connected. available package package type device no. ja ( o c/w) exposed thermal pad dfn 8l ad5165a-h 45.8 yes wcsp 9l ad5165a-w 128 n/a
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