esmt/emp ad52661 elite semiconductor memory technology inc./elite mi cropower inc. publication date: may 2012 revision: 0.02 1/30 15w stereo class-d audio amplifier with power limit and dynamic range control features single supply voltage 8 ~ 16.5v for loudspeaker driver built-in ldo output 3.3v for others loudspeaker power from 15v supply stereo mode: 15w/ch into 8 w @10% thd+n mono mode: 30w/ch into 4 w @10% thd+n loudspeaker power from 12v supply stereo mode: 10w/ch into 8 w @10% thd+n mono mode: 19w/ch into 4 w @10% thd+n 91% efficient class-d operation eliminates need for heat sink differential inputs four selectable, fixed gain settings internal oscillator clock external synchronization function master/slave synchronization function using clock outputs under-voltage detection pop noise and click noise reduction adjustable power limit function for speaker protection non-clip and drc function filter-free operation output dc detection for speaker protection short-circuit protection with auto recovery optio n over temperature protection with auto recovery applications tv audio boom-box powered speaker consumer audio equipment description the ad52661 is a high efficiency stereo class-d audio amplifier with adjustable power limit functio n and dynamic range control function. the loudspeaker driver operates from 8~16.5v supply voltage and analog circuit operates at 3.3v supply voltage. it can deliver 15w/ch output power into 8 w loudspeaker within 10% thd+n and without external heat sink when playing music. ad52661 provides adjustable power limit function allows user to set a voltage rail by two resister divider to limit the amount of current through the speaker. ad52661 also features non-clip function and drc (dynamic range control) function that were developed for low distortion with audio qualit y. ad52661 has output dc detection prevents speaker damage from long-time current stress, short circuit protection function and over temperature protection. simplified application circuit linn rinn agnd avdd pd ad52661 outpl outnl pvccl pvccr gain0 gain1 8v to 16.5v 1uf mute linp 1uf rinp lc filter or ferrite bead filter outpr outnr lc filter or ferrite bead filter error pgnd 1uf 1uf 1uf pvccreg drc0 drc1 plimit
esmt/emp ad52661 elite semiconductor memory technology inc./elite mi cropower inc. publication date: may 2012 revision: 0.02 2/30 pin assignments (top view) pin description name pin typ description pvccreg 1 p power supply terminal for regulators. avdd 2 p 3.3v regulated output. linp 3 i positive audio input for left channel. bia sed at 1.65v. linn 4 i negative audio input for left channel. bia sed at 1.65v. vref 5 o reference voltage output. rinn 6 i negative audio input for right channel. bi ased at 1.65v. rinp 7 i positive audio input for right channel. bi ased at 1.65v. agnd 8 p analog signal ground. connect to the therm al pad. plimit 9 i power limit level adjustment. connect a resistor di vider from avdd to agnd to set power limit. pvccpr 10 p high-voltage power supply for right-cha nnel. outpr 11, 12 o class-d h-bridge positive output for right channel (rch+). pgndr 13 p power ground for the h-bridges of right channel. outnr 14, 15 o class-d h-bridge negative output for right channel (rch-). pvccpr 16 p high-voltage power supply for right-cha nnel. pd 17 i power down, low active. note. do not use avdd pin to apply h level to pd pin, the device will not start when using avdd pin as h level signal because avdd goe s up at the time pd pin becomes h.
esmt/emp ad52661 elite semiconductor memory technology inc./elite mi cropower inc. publication date: may 2012 revision: 0.02 3/30 error 18 o error flag output, open drain output ter minal. low active. mute 19 i mute control terminal, low active. clkout 20 o clock output terminal for synchronizati on. clkin 21 i external clock input terminal. drc0 22 i non-clip/drc1/drc2 mode selection 0. drc1 23 i non-clip/drc1/drc2 mode selection 1. gain0 24 i gain select least significant bit 0. gain1 25 i gain select most significant bit 1. pvccnl 26 p high-voltage power supply for left-chan nel. outnl 27, 28 o class-d h-bridge negative output for left channel (lch-). pgndl 29 p power ground for the h-bridges of left c hannel. outpl 30, 31 o class-d h-bridge positive output for left channel (lch+). pvccpl 32 p high-voltage power supply for left-chan nel. thermal pad p must be soldered to pcbs ground plan e. ordering information product id package packing comments AD52661-EH32NAR qfn 32l (6x5 mm) 5k units / reel 1 reel / box green marking information ad52661 marking information line 1 logo line 2 product no line 3 tracking code pin1 dot esmt esmt esmt esmt ad adad ad52661 52661 52661 52661 tracking code tracking code tracking code tracking code
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