IS31AP2118 integrated silicon solution, inc. ? www.issi.com 1 rev. 00a, 06/10/2012 15w stereo class-d audio power amplifier advanced information june 2012 general description the IS31AP2118 is a 15w, dual channel, class-d stereo driver in our audio amplifier family. it is suitable for powering the audio components of various equipments, including typical consumer electronics, high performance audio speakers. IS31AP2118 has several key features which distinguishes itself from other alternatives on the market. on-board agc, emi suppression, and 90% typical operating efficiency are key features of this part. emi suppression circuit, which eliminates lc, filters at the outputs. these features simplify customer design, reduces system cost and pcb area. the IS31AP2118 integrates automatic gain control function with adjustable power limit. when output power goes over the power limit, IS31AP2118 can reduce gain automatically to pull down the output power, so that keep the output power around power limit while the input level is high. the IS31AP2118 has short circuit and thermal protection features integrated on board. features ? dual 12w, at 4 ? @ 1% thd, v cc =12v ? dual 15w, at 8 ? @ 10% thd, v cc =16v ? mono 20w, at 8 ? @ 10% thd, v cc =18v ? 90% typical operating efficiency ? 8v< v in <26v ? filter-less emi suppression ? integrated agc with adjustable power limit ? four selectable, gain preset levels: 20db, 26db, 32db, 36db ? high snr, low thd+n ? thermal and short-circuit protection ? over/under-voltage protection ? de-pop circuitry ? tssop-28 package applications ? consumer audio equipment ? hdtv, home theater equipment ? automotive audio amplifier ? performance stereo speakers typical application circuit IS31AP2118 7 avcc 10 f 12 inr+ inr- c inr+ 1 f c inr- 1 f 11 right input 0.1 f sdb 1 100k micro controller mute 13 left input faultb 2 gain0 5 gain1 6 3 inl+ inl- c inl+ 1 f c inl- 1 f 4 avdd agclmt 9 10 pvcc 15,16 470 f 1 f 27,28 mode outl+ bsl+ 26 25 pgnd 24 0.22 f 0.22 f 33 h 33 h 1nf 1nf outl- 23 22 bsl- outr+ bsr+ 17 18 pgnd 19 0.22 f 0.22 f 33 h 33 h 1nf 1nf outr- 20 21 bsr- agnd 8 14 v cc 8v~26v v cc 8v~26v 1k figure 1 typical application circuit (stereo mode application)
IS31AP2118 integrated silicon solution, inc. ? www.issi.com 2 rev. 00a, 06/10/2012 IS31AP2118 7 avcc 10 f 12 inr+ inr- c inr+ 1 f c inr- 1 f 11 audio input 0.1 f 3 inl+ inl- c inl+ 1 f c inl- 1 f 4 avdd agclmt 9 10 pvcc 15,16 470 f 1 f 27,28 outl+ bsl+ 26 25 pgnd 19, 24 0.22 f 0.22 f outl- 23 22 bsl- outr+ bsr+ 17 18 0.22 f 0.22 f 33 h outr- 20 21 bsr- agnd 8 mode 14 v cc 8v~26v v cc 8v~26v 33 h 1nf 1nf sdb 1 100k micro controller mute 13 faultb 2 gain0 5 gain1 6 1k figure 1 typical application circuit (mono mode application)
IS31AP2118 integrated silicon solution, inc. ? www.issi.com 3 rev. 00a, 06/10/2012 pin configuration package pin configuration (top view) tssop-28 1 2 3 4 21 22 23 24 inl+ outl- inl- bsr- bsl- pgnd faultb sdb 5 6 7 8 17 18 19 20 avcc agnd bsr+ outr+ pgnd gain1 gain0 9 10 11 12 15 16 agclmt pvcc inr- pvcc avdd mode 13 14 inr+ mute 25 26 outl+ bsl+ 27 28 pvcc pvcc outr- ordering information industrial range: -40c to +85c order part no. package qty/tube IS31AP2118-zls2 tssop-28, lead-free 30 copyright ? ? ? 2012 ? integrated ? silicon ? solution, ? inc. ? all ? rights ? reserved. ? issi ? reserves ? the ? right ? to ? make ? changes ? to ? this ? specification ? and ? its ? products ? at ? any ? time ? without ? notice. ? issi ? assumes ? no ? liability ? arising ? out ? of ? the ? application ? or ? use ? of ? any ? information, ? products ? or ? services ? described ? herein. ? customers ? are ? advised ? to ? obtain ? the ? latest ? version ? of ? this ? device ? specification ? before ? relying ? on ? any ? published ? information ? and ? before ? placing ? orders ? for ? products. ? integrated ? silicon ? solution, ? inc. ? does ? not ? recommend ? the ? use ? of ? any ? of ? its ? products ? in ? life ? support ? applications ? where ? the ? failure ? or ? malfunction ? of ? the ? product ? can ? reasonably ? be ? expected ? to ? cause ? failure ? of ? the ? life ? support ? system ? or ? to ? significantly ? affect ? its ? safety ? or ? effectiveness. ? products ? are ? not ? authorized ? for ? use ? in ? such ? applications ? unless ? integrated ? silicon ? solution, ? inc. ? receives ? written ? assurance ? to ? its ? satisfaction, ? that: ? a.) ? the ? risk ? of ? injury ? or ? damage ? has ? been ? minimized; ? b.) ? the ? user ? assume ? all ? such ? risks; ? and ? c.) ? potential ? liability ? of ? integrated ? silicon ? solution, ? inc ? is ? adequately ? protected ? under ? the ? circumstances
IS31AP2118 integrated silicon solution, inc. ? www.issi.com 4 rev. 00a, 06/10/2012 pin description no. pin description 1 sdb shutdown control. active low. 2 faultb open drain output used to display short circuit or dc detect fault status. voltage compliant to avcc. short circuit faults can be set to auto-recovery by connecting fault pin to sd pin. otherwise, both short circuit faults and dc detect faults must be reset by cycling pvcc. 3 inl+ positive audio input for left channel. 4 inl- negative audio input for left channel. 5 gain0 gain select least significant bit. 6 gain1 gain select most significant bit. 7 avcc analog power supply. 8 agnd analog signal ground. 9 avdd 5v regulated output. connect 2.2 f to agnd. 10 agclmt power limit level adjusting pin. connect a resistor divider from avdd to agnd to set power limit. connect directly to avdd for no power limit. 11 inr- negative audio input for right channel. 12 inr+ positive audio input for right channel. 13 mute mute mode control. 14 mode parallel btl mode switch. (low = btl mode, high = pbtl mode) 15, 16 pvcc power supply for right channel h-bridge. 17 bspr bootstrap i/o for right channel, positive high-side fet. 18 outr+ class-d h-bridge positive output for right channel. 19, 24 pgnd power ground for the h-bridges. 20 outr- class-d h-bridge negative output for right channel. 21 bsr- bootstrap i/o for right channel, negative high-side fet. 22 bsl- bootstrap i/o for left channel, negative high-side fet. 23 outl- class-d h-bridge negative output for left channel. 25 outl+ class-d h-bridge positive output for left channel. 26 bsl+ bootstrap i/o for left channel, positive high-side fet. 27, 28 pvcc power supply for left channel h-bridge. thermal pad connect to gnd.
IS31AP2118 integrated silicon solution, inc. ? www.issi.com 5 rev. 00a, 06/10/2012 absolute maximum ratings supply voltage (avcc, pvcc), v cc - 0.3v ~ +30.0v voltage at sdb, gain0, gain1, mode, mute pins - 0.3v ~ v cc +0.3v voltage at inr-, inr+, inl-, inl+, agclmt pins -0.3 to v avdd +0.3v volta g e at outl+, outr+, outl-, outr- -0.3 to v cc +0.3v voltage at avdd - 0.3v ~ +6.0v maximum junction temperature, t jmax 150c storage temperature range, t stg - 65c ~ +150c operating temperature range, t a ? 40c ~ +85c note: stresses beyond those listed under ?absolute maximum ratings? may cause permanent damage to the device. these are stress rating s only and functional operation of the device at these or any other condition beyond those indicated in the operational sections of th e specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. dc electrical characteristics v cc =12v, t a =25 , r l =8 ? (unless otherwise noted). symbol parameter condition min. typ. max. unit v cc supply voltage 8 26 v i dd quiescent current v sdb = 2v, no load (without lc) 20 ma i sd shutdown current v sdb = 0.8v 200 a r ds(on) drain-source on-state resistance i o = 500ma 240 m ? v os class-d output offset voltage (measured differentially) v i = 0, gain = 36db 1.5 mv g gain gain1= 0.8v, gain0= 0.8v 20 db gain1= 0.8v, gain0= 2v 26 gain1= 2v, gain0= 0.8v 32 gain1= 2v, gain0= 2v 36 t on turn-on time v sdb = 2v 14 ms t off turn-off time v sdb = 0.8v 2 s avdd internal regulated output i o = 5ma 5 v r l speaker resistance btl: pvcc > 15 v 4.8 ? btl: pvcc 15 v 3.2 pbtl 3.2 logic electrical characteristics (sdb, gain0, gain1, mute, mode) v ih high level threshold voltage 2 avcc v v il low level threshold voltage 0 0.8 v i ih high level threshold current v i = 2v, v cc = 18v 50 a i il low level threshold current v i = 0.8v, v cc = 18v 5 a
IS31AP2118 integrated silicon solution, inc. ? www.issi.com 6 rev. 00a, 06/10/2012 ac electrical characteristics v cc =12v, t a =25 , r l =8 ? (unless otherwise noted). symbol parameter condition min. typ. max. unit psrr power supply ripple rejection 200mv p-p ripple at 1khz, gain = 20db, inputs ac-coupled to agnd -70 db p o continuous output power thd+n = 10%, f = 1khz, vcc = 13v 10 w thd+n total harmonic distortion + noise vcc = 12v, f = 1khz, po = 5w (half- power) 0.1 % v n output integrated noise 20hz to 22khz, a-weighted filter, gain = 20db 65 v x crosstalk v o = 1vrms, gain = 20db, f = 1khz -100 db snr signal-to-noise ratio maximum output at thd+n < 1%, f = 1khz, gain = 20db, a-weighted 102 db thermal trip point 160 ( thermal hysteresis 60 (
IS31AP2118 integrated silicon solution, inc. ? www.issi.com 7 rev. 00a, 06/10/2012 functional block diagram
IS31AP2118 integrated silicon solution, inc. ? www.issi.com 8 rev. 00a, 06/10/2012 function description the IS31AP2118 is a 15w, dual channel, class-d stereo driver which is suitable for powering the audio components of various equipments, including typical consumer electronics, high performance audio speakers. the mute pin is an input for controlling the output state of the IS31AP2118. a logic high on this terminal will shut down the outputs. a logic low on this pin enables the outputs. the gain of the IS31AP2118 is set by two input terminals, gain0 and gain1. different input logic for gain0 and gain1 cause input gain in 4 levels (20db, 26db, 32db, 36db). the IS31AP2118 also provides thermal and over current protection functions to prevent permanent damage to the device.
IS31AP2118 integrated silicon solution, inc. ? www.issi.com 9 rev. 00a, 06/10/2012 package information tssop-28 note: all dimensions in millimeters unless otherwise stated.
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