esmt preliminary AD5165A elite semiconductor memory technology inc. publication date: sep. 2007 revision: 0.1 1/12 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 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 ? 89% @ 8 , thd+n=10% ? 84% @ 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 packaged as dfn 8l 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 dfn 8l, 3x3 mm pb-free functional block diagram pwm generator loudspeaker driver + - + - ~300k ~300k overload, voltage & thermal protection -wave generator ~300k pvdd; avdd inp inn pwma pwmb sd# r in r in c in c in differential input + - gain=300k /r in thermal pad; pgnd c s
esmt preliminary AD5165A elite semiconductor memory technology inc. publication date: sep. 2007 revision: 0.1 2/12 1 2 3 45 6 7 8 9:thermal pad sd# avdd inp inn pwma pwmb pvdd pgnd pin assignments dfn 8l, 3x3mm pin description pin name typ description 1 sd# i shutdown AD5165A (low active logic) 2 avdd p power supply 3 inp i positive differential input 4 inn i negative differential input 5 pwma o positive output 6 pvdd p high current power supply 7 pgnd g high current ground 8 pwmb o negative output 9 thermal pad g must be soldered to pcb?s ground plane available package package type device no. ja ( o c/w) exposed thermal pad dfn 8l (3x3) AD5165A 45.8 yes note1: the thermal pad is at the bottom of p ackage. to optimize the performance of thermal dissipation, solder the thermal pad to pcb?s ground plane is suggested.
esmt preliminary AD5165A elite semiconductor memory technology inc. publication date: sep. 2007 revision: 0.1 3/12 absolute maximum ratings symbol parameter min max unit avdd supply for lower power analog cells 2.5 5.0 v pvdd supply for loudspeaker driver 2.5 5.0 v input voltage -0.3 avdd v t stg storage temperature -65 150 o c t a ambient operating temperature 0 70 o c recommended operating conditions general electrical characteristics symbol parameter typ unit avdd supply for lower power analog cells 2.5~5.0 v pvdd supply for loudspeaker driver 2.5~5.0 v v ih high-level input voltage 2.0 v v il low-level input voltage 0.8 v t a ambient operating temperature 0~70 o c symbol parameter condition min typ max unit i pd supply current during power-down mode avdd=pvdd=5.0v; sd#=0 2 50 a v offset output offset voltage input ac grounded, vdd=2.5v~5.0v 5 25 mv junction temperature for driver shutdown 145 150 155 o c temperature hysteresis for recovery from shutdown 115 120 125 o c f sw switching rate of loudspeakers driver 300 450 600 khz r sc loudspeaker short-circuit detect resistance pvdd = 5 v 2.8 3.2
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