esmt/emp preliminary ad62555 elite semiconductor memory technology inc./elite micropower inc. publication date: june 2011 revision: 0.2 1/16 class-d audio power amplifier with usb interface features z true plug-and-play application, no driver is required for basic usb speaker application z supports windows me/2000/xp/vista/7 and mac os z integration circuit quality meet windows 7 and vista hardware logo requirement z compliant with usb specification v1.1, and usb 2.0 full speed z can work directly with a usb3.0 port z embedded high efficiency, high performance class-d stereo amplifier z support both bus-powered and self-powered operation z +6db gain enhancement (theater function) z support volume/mute control with external button z led indicator function z built-in 5v to 3.3v regulator for internal device operation z loudspeaker psnr & dr (a-weighting) 91db (psnr), 92db (dr) with bead filter z anti-pop design z over-temperature protection z under-voltage shutdown z short-circuit detection z embedded power-on-reset circuit z 12 mhz crystal input z 3.3v operation with 5v tolerate i/o z 24-pin e-tssop pb-free package description ad62555 is a monolithic class-d audio amplifier with usb interface. when powered by the usb port, ad62555 can drive a pair of up to 1w speakers due to the built-in, high efficiency and high performance class-d amplifiers. functional block diagram usb phy system controller audio processing class-d amp. xo pll0 pll1 regulator 5v-> 3.3v rom xi xo usbdp usbdm mute voldn voldp theater la/lb ra/rb power-on- reset led
esmt/emp preliminary ad62555 elite semiconductor memory technology inc./elite micropower inc. publication date: june 2011 revision: 0.2 2/16 pin assignment pin description pin name type description characteristics 1 usbdp i/o usb data d+ with internal pull-up resistor 2 voldn i volume down, low active with internal pull-up resistor 3 mute i power-down and mute of class-d, low active with internal pull-up resistor 4 sda i/o i 2 c?s sda of master mode 5v tolerant schmitt trigger ttl input buffer 5 scl o i 2 c?s scl of master mode 6 test o reserved for testing purpose, no need to connect it during normal application 7 volup i volume up, low active with internal pull-up resistor 8 theater i theater mode, high active 5v tolerant schmitt trigger ttl input buffer 9 gndr p ground for right channel 10 rb o right channel output- 11 ra o right channel output+ 12 vddr p supply for right channel 13 vddl p supply for left channel 14 la o left channel output+ 15 lb o left channel output-
esmt/emp preliminary ad62555 elite semiconductor memory technology inc./elite micropower inc. publication date: june 2011 revision: 0.2 3/16 16 gndl p ground for left channel 17 gnd p ground 18 led o led indicator 19 xo o crystal output 20 xi i crystal input 21 gnd p ground 22 vdd p 3.3v regulator output 23 vdd5 p 5v supply voltage 24 usbdm i/o usb data d- ordering information product id package packing comments AD62555-QE24NAT e-tssop 24l tube green available package package type device no. ja ( /w) jc ( /w) e-tssop 24l ad62555 32.3 17 note 1: ja is measured on a room temperature (t a =25 ), natural convection environment test board, which is constructed with a thermally efficient, 2-layers pcb. the measurement is tested using the jedec51-3 thermal measurement standard. note 2: jc represents the heat resistance for the heat flow between the chip and the package?s top surface. marking information ad62555 line 1 : logo line 2 : product no. line 3 : tracking code
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