IS31AP2117 integrated silicon solution, inc. ? www.issi.com 1 rev. 00a, 07/10/2012 8w/ch stereo class-d audio power amplifier advanced information july 2012 general description the IS31AP2117 is an 8w/ch, 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. IS31AP2117 has several key features which distinguishes itself from other alternatives on the market. on-board agc, emi suppression, and 92% 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 IS31AP2117 integrates automatic gain control function with adjustable power limit. when output power goes over the power limit, IS31AP2117 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 IS31AP2117 has short circuit and thermal protection features integrated on board. features ? mono 6w, at 8 ? @ 1% thd, v cc =12v ? mono 15w, at 8 ? @ 10% thd, v cc =16v ? dual 8w/ch, at 8 ? @ 10% thd, v cc =24v ? 92% 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 ? mute features ? clock selection ? tssop-28 package applications ? consumer audio equipment ? hdtv, home theater equipment ? automotive audio amplifier ? performance stereo speakers typical application circuit outl agnd IS31AP2117 7 9 avcc 10 f bypass v cc 8v~26v 13 inr+ inr- c inr+ 1 f c inr- 1 f 12 right input 8 1 f 0.1 f sdb 1 100k micro controller mute 14 left input fsel 2 gain0 5 gain1 6 3 inl+ inl- c inl+ 1 f c inl- 1 f 4 bsl 26 24,25 pgnd 20~23 avdd agclmt 10 11 0.22 f 0.22 f 33 h 33 h 0.22 f 0.22 f 470 f 470 f pvcc 15,16 470 f 1 f 27,28 outr 18,19 17 bsr v cc 8v~26v figure 1 typical application circuit (stereo mode application)
IS31AP2117 integrated silicon solution, inc. ? www.issi.com 2 rev. 00a, 07/10/2012 agnd IS31AP2117 7 9 avcc 10 f bypass 13 inr+ c inr+ 1 f audio input 8 1 f 0.1 f sdb 1 100k micro controller mute 14 fsel 2 gain0 5 gain1 6 3 inl+ inl- c inl+ 1 f c inl- 1 f 4 pgnd 20~23 avdd agclmt 10 11 0.22 f 0.22 f 33 h 33 h 0.22 f 0.22 f pvcc 15,16 470 f 1 f 27,28 outl bsl 26 24,25 outr 18,19 17 bsr v cc 8v~26v v cc 8v~26v inr- c inr- 1 f 12 figure 2 typical application circuit (mono mode application)
IS31AP2117 integrated silicon solution, inc. ? www.issi.com 3 rev. 00a, 07/10/2012 pin configuration package pin configuration (top view) tssop-28 ordering information industrial range: -40c to +85c order part no. package qty/tube IS31AP2117-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 ?
IS31AP2117 integrated silicon solution, inc. ? www.issi.com 4 rev. 00a, 07/10/2012 pin description no. pin description 1 sdb shutdown control. active low. 2 fsel frequency select input pin. (low = 300khz, high = 400khz) 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 bypass reference for pre-amplifier inputs. nominally equal to avdd/2. 10 avdd 5v regulated output. connect 2.2 f to agnd. 11 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. 12 inr- negative audio input for right channel. 13 inr+ positive audio input for right channel. 14 mute mute mode control. 15, 16 pvcc power supply for right channel h-bridge. pvccr and pvccl must be connected together on the pcb. 17 bsr bootstrap i/o for right channel, high-side fet. 18, 19 outr class-d h-bridge output for right channel. 20~23 pgnd power ground for the h-bridges. 24, 25 outl class-d h-bridge output for left channel. 26 bsl bootstrap i/o for left channel, high-side fet. 27, 28 pvcc power supply for left channel h-bridge. pvccr and pvccl must be connected together on the pcb. thermal pad connect to gnd.
IS31AP2117 integrated silicon solution, inc. ? www.issi.com 5 rev. 00a, 07/10/2012 absolute maximum ratings supply voltage (avcc, pvcc), v cc - 0.3v ~ +30.0v voltage at sdb, gain0, gain1, fsel, mute pins - 0.3v ~ v cc +0.3v voltage at in, agclmt pins -0.3 to v avdd +0.3v volta g e at outr, outl -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 cc quiescent current v sdb = 2v, no load (without lc) 12 ma i sd shutdown current v sdb = 0.8v 200 a r ds(on) drain-source on-state resistance i o = 500ma 150 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 50 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 3.6 ? logic electrical characteristics (sdb, fsel, gain0, gain1, mute) 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
IS31AP2117 integrated silicon solution, inc. ? www.issi.com 6 rev. 00a, 07/10/2012 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 = 20 db, inputs ac-coupled to agnd -60 db p o continuous output power thd+n = 10%, f = 1khz, r l = 4 ? 5 w thd+n total harmonic distortion + noise f = 1khz, p o = 1w (half-power) 0.1 % v n output integrated noise 20hz ~ 22khz, a-weighted filter, gain = 20db 65 v snr signal-to-noise ratio maximum output at thd+n < 1%, f = 1khz, gain = 20db, a-weighted 102 db f osc oscillator frequency v fsel = 0.8v 290 khz v fsel = 2v 390 thermal trip point 160 thermal hysteresis 60
IS31AP2117 integrated silicon solution, inc. ? www.issi.com 7 rev. 00a, 07/10/2012 functional block diagram sdb outl inl- inl+ agc sequence r i r i avcc pgnd bsl gain0 agclmt agc reference ttl buffer output stage band gap bias bypass clock generator gain1 fsel mute agnd ldo avdd pvcc outl inl- inl+ agc r i r i bsl output stage bypass
IS31AP2117 integrated silicon solution, inc. ? www.issi.com 8 rev. 00a, 07/10/2012 function description the IS31AP2117 is an 8w, dual channel, class-d stereo 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 IS31AP2117. a logic high on this terminal will shut down the outputs. a logic low on this pin enables the outputs. the gain of the IS31AP2117 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 IS31AP2117 also provides thermal and over current protection functions to prevent permanent damage to the device.
IS31AP2117 integrated silicon solution, inc. ? www.issi.com 9 rev. 00a, 07/10/2012 package information tssop-28 note: all dimensions in millimeters unless otherwise stated.
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