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ics for audio common use 1 publication date: june 2006 sdc00044aeb AN12940AA audio signal processing ic for notebook pc overview the AN12940AA is an amplifier ic for stereo speakers which can output 1 w by 8 ? or 2 w by 4 ? . the agc circuit is built-in to prevent the resonance or the vibration by the speaker's energy and the clipping distortion what is called "broken up sound." of the speakers. also the AN12940AA is built-in power saving on/off function automatically detecting input signal to save the power. features ? speaker amplifier is 1 w 2-ch: 8 ? ,v cc = 5 v or 2 w 2-ch: 4 ? ,v cc = 5 v ? built-in agc circuit prevention of the resonance or the vibration by the speaker's energy and the clipping distortion of the speaker by agc at excessive input signal (with agc on/off switch). ? built-in automatic power saving function it detects input signals and switches on/off (with the on/off switch for the automatic power saving). ? any shock noise free at the automatic power saving operation. applications ? notebook pc, lcd monitor with speaker package ? hsop056-p-0300a block diagram standby sw main signal mute sw signal automatic detection s w sp power save sw agc sw agc-on level sw 4 ? 8 ? agc ? ? ? speaker amp. audio signal detection sensitivity sw agc input1 input2 input3 input4 l r mix circuit automatic detection maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 2 sdc00044aeb application circuit example 1 28 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 1 f 0.47 f 0.47 f 0.47 f 0.47 f 4.7 f 0.47 f 0.47 f 0.47 f 1 f 10 f 0.047 f 4.7 f 0.47 f 0.47 f 0.47 f 0.47 f 1 mf 0.47 f 10 f 47 k ? 100 k ? 20 k ? 20 k ? 22 k ? 10 f supply voltage 5 v hp amp. l-ch. out-l out-r sp save on/off 4 ? ~ 8 ? agc on/off power save save ctl mute control signal det. offset cancel v cc _sp sp gnd sp gnd mute det. gnd gnd agc agc v ref v ref v ref (sp ) signal on/off standby alarm v ref reg beep v cc audio control volume l-ch. in monophonic input (from modem) monophonic input (from beep) monophonic input (from alarm) monophonic input (from pccard) r-ch. in audio control volume automatic detection output audio signal detection sensitivity audio automatic detection on/off control signal on/off hp amp. r-ch. stb gnd gnd v cc _sp 4 ? ~ 8 ? v cc v cc v cc agc-on level change v cc maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 3 sdc00044aeb pin description pin no. description 1v cc 2 input for alarm 3 reg ripple filter pin 4 input for pccard 5 standby on/off control 6 r-channel input 7 main signal mute on/off control 8v ref r-channel for volume 9 audio mix amplifier r-channel output 10 volume control signal r-channel input 11 r-channel output for hp amplifier 12 negative feedback pin for alarm mix amplifier r-channel 13 alarm mix amplifier r-channel output 14 agc r-channel output 15 gnd 16 sp amplifier r-channel input 17 signal automatic detection on/off control 18 signal automatic detection sense control 19 v ref _sp 20 gnd 21 demodulation pin for signal automatic detection 22 signal automatic detection output 23 gnd_sp r-channel 24 sp amplifier r-channel positive phase output ( + ) 25 sp amplifier r-channel positive phase output ( + ) 26 sp amplifier r-channel negative phase output ( ? ) 27 sp amplifier r-channel negative phase output ( ? ) 28 v cc _sp r-channel 29 v cc _sp l-channel pin no. description 30 sp amplifier l-channel negative phase output ( ? ) 31 sp amplifier l-channel negative phase output ( ? ) 32 sp amplifier l-channel positive phase output ( + ) 33 sp amplifier l-channel positive phase output ( + ) 34 gnd_sp l-channel 35 sp power save control 36 agc-on level control 37 gnd 38 offset cancel pin for signal automatic detection 39 agc on/off control 40 agc demodulation pin 41 sp amplifier l-channel input 42 gnd 43 agc r-channel output 44 alarm mix amplifier l-channel output 45 negative feedback pin for alarm mix amplifier l-channel 46 l-channel output for hp amplifier 47 volume control signal l-channel input 48 audio mix amplifier l-channel output 49 v ref l-channel for volume 50 signal automatic detection mix amplifier output 51 negative feedback pin for signal automatic detection mix amplifier 52 l-channel input 53 v ref 54 input for modem 55 gnd 56 input for beep note) sp : speaker hp : headphone reg : regulator maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 4 sdc00044aeb note) * 1: the values under the condition the above absolute maximum ratings and the power dissipation. * 2: ta = 75 c, the value under the condition which this device is mounted on a four-layer printed wiring board and in addition its radiation part is soldered. (reference to technical data, ? power dissipation of package hsop056-p-0300a) * 3: except for the storage temperature and operating ambient temperature, all ratings are for t a = 25 c. absolute maximum ratings parameter symbol rating unit supply voltage * 1 v cc 5.75 v v cc _sp 5.75 supply current i cc ? a power dissipation * 2 p d 2620 mw operating ambient temperature * 3 t opr ? 20 to + 75 c storage temperature * 3 t stg ? 55 to + 150 c recommended operating range parameter symbol range unit supply voltage v cc 4.5 to 5.5 v supply voltage *1 v cc _sp 4.5 to 5.5 electrical characteristics at v cc = 5 v, v cc _sp = 5 v, (ta = 25 c 2 c unless otherwise specified.) parameter symbol conditions min typ max unit circuit current circuit current 1a at non-signal i vcca v cc = 5 v, at non-signal, 2.0 4.0 6.0 ma (v cc) automatic distinction: on circuit current 2a at non-signal i vccsa v cc = 5 v, at non-signal, ? 200 500 a (v cc _sp) automatic distinction: on circuit current 1b at non-signal i vccb v cc = 5 v, at non-signal, 2.2 4.5 6.8 ma (v cc) power save: off at non-automatic distinction circuit current 2b at non-signal i vccsb v cc = 5 v, at non-signal, ? 8.1 16.2 ma (v cc _sp) power save: off at non-automatic distinction circuit current 1c at non-signal i vccc v cc = 5 v, at non-signal, 1.5 3.5 5.5 ma (v cc ) power save: on at non-automatic distinction circuit current 2c at non-signal i vccsc v cc = 5 v, at non-signal, ? 200 500 a (v cc _sp) power save: on at non-automatic distinction circuit current 1d at non-signal v cc i vccd v cc = 5 v, at standby mode ? 20 50 a circuit current 2d at non-signal i vccsd v cc = 5 v, at standby mode ? 10 50 a (v cc _sp) note) * 1: the values under the condition the above absolute maximum ratings and the power dissipation. maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 5 sdc00044aeb parameter symbol conditions min typ max unit speaker amplifier (pin 52, pin 6 pin 24 to pin 27, pin 33 to pin 30) l-channel audio output level v ospl v in = ? 16 dbv,1 khz,r l = 8 ? 2.0 4.0 6.0 dbv r-channel audio output level v ospr v in = ? 16 dbv, 1 khz,r l = 8 ? 2.0 4.0 6.0 dbv l-channel audio output distortion th spl v in = ? 16 dbv, 1 khz,r l = 8 ?? 0.04 0.5 % to thd fifth r-channel audio output distortion th spr v in = ? 16 dbv, 1 khz,r l = 8 ?? 0.04 0.5 % to thd fifth l-channel audio output noise v nspl at non-signal, r l = 8 ??? 74 ? 68 dbv a curve filter r-channel audio output noise v nspr at non-signal, r l = 8 ??? 74 ? 68 dbv a curve filter l-channel maximum output power v m8spl v in = 1 k z, at thd = 10%, 0.7 1.0 ? w r l = 8 ? , to thd fifth, at agc = off r-channel maximum output power v m8spr v in = 1 khz, at thd = 10%, 0.7 1.0 ? w r l = 8 ? , to thd fifth, at agc = off l-channel maximum output power v m4spl v in = 1 khz, at thd = 10%, ? 2.0 ? w r l = 4 ? , to thd fifth, at agc = off r-channel maximum output power v m4spr v in = 1 khz, at thd = 10%, ? 2.0 ? w r l = 4 ? , to thd fifth, at agc = off cross talk r-channel v ctspl v in = ? 16 dbv, 1 khz,r l = 8 ? 70 76 ? db l-channel a curve filter cross talk l-channel v ctspr v in = ? 16 dbv, 1 khz,r l = 8 ? 70 76 ? db r-channel a curve filter agc output level v agspl v in = ? 6 dbv, 1 khz,r l = 8 ? 5.5 7.0 8.5 dbv v agspr a curve filter mix amplifier characteristic 1 (pin 4, pin 54, pin 56 pin 46, pin 11) l-channel, r-channel output level v bespl v in = ? 10 dbv, 1 khz, ? 14 ? 13 ? 12 dbv at beep signal mix v bespr pin 56 input l-channel, r-channel output level v mdspl v in = ? 10 dbv, 1 khz, ? 14 ? 13 ? 12 dbv at modem signal mix v mdspr pin 54 input l-channel, r-channel output level v pcspl v in = ? 10 dbv, 1 khz, ? 14 ? 13 ? 12 dbv at pccard signal mix v pcspr pin 4 input each entry pin max input level ? v in = 1 khz, v in at thd = 1% 1.2 ?? v rms maximum amplifier output for the v hpmal v in = 1 khz, v in at thd = 1% 0.85 ?? v rms hp amplifier v hpmar mix amplifier characteristic 2 (pin 56, pin 54, pin 52, pin 2, pin 4, pin 6 pin 44, pin 13) l-channel, r-channel mix v ofspl v in = ? 10 dbv, 1 khz ?? 74 ? 68 dbv amplifier cross talk in case of signal off v ofspr pin 4,6,52,54,56: input l-channel, r-channel mix v arspl v in = ? 10 dbv, 1 khz ? 12 ? 10 ? 8 dbv amplifier cross talk in case of signal off v arspr pin 2: input electrical characteristics at v cc = 5 v, v cc_ sp = 5 v, (ta = 25 c 2 c unless otherwise specified.) (continued) maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 6 sdc00044aeb electrical characteristics at v cc = 5 v, v cc_ sp = 5 v, (ta = 25 c 2 c unless otherwise specified.) (continued) parameter symbol conditions min typ max unit signal detection system characteristic (pin 52, pin 6, pin 54, pin 56, pin 2, pin 4 pin 50) pre-amplifier output at l-channel input v sdtl v in = ? 45 dbv, 1 khz ?12 ? 10 ? 8 dbv pre-amplifier output at r-channel input v sdtr v in = ? 45 dbv, 1 khz ?12 ? 10 ? 8 dbv pre-amplifier output v sdtbe v in = ? 45 dbv, 1 khz ? 12 ? 10 ? 8 dbv at beep signal input pre-amplifier output v sdtmd v in = ? 45 dbv, 1 khz ? 12 ? 10 ? 8 dbv at modem signal input pre-amplifier output v sdtpc v in = ? 45 dbv, 1 khz ? 12 ? 10 ? 8 dbv at pccard signal input pre-amplifier output v sdtar v in = ? 45 dbv, 1 khz ? 12 ? 10 ? 8 dbv at alarm signal input detection level 1 at high sensitivity v sdtth v in = 1 khz ? 72 ? 67 ? 62 dbv detection level 2 at low sensitivity v sdttl v in = 1 khz ? 66 ? 61 ? 56 dbv distinction output high level v sdthi v in = 1 khz 4.0 5.0 ? v distinction output low level v sdtlo v in = 1 khz ? 0.1 1.0 v voltage holding mode entry signal on/off v 7h ? 2.0 ? 5.0 v voltage range holding on entry signal on/off v 7l ? 0.0 ? 0.8 v voltage range holding off agc on/off v 39h ? 2.0 ? 5.0 v voltage range holding on agc on/off v 39l ? 0.0 ? 0.8 v voltage range holding off signal automatic detection function v 17h ? 2.0 ? 5.0 v voltage range holding on signal automatic detection function v 17l ? 0.0 ? 0.8 v voltage range holding off standby on/off v 5h ? 2.0 ? 5.0 v voltage range holding off standby on/off v 5l ? 0.0 ? 0.8 v voltage range holding on sp amplifier power save on/off v 35h ? 2.0 ? 5.0 v voltage range holding off sp amplifier power save on/off v 35l ? 0.0 ? 0.8 v voltage range holding on it changes automatic detection sensitivity v 18h ? 2.0 ? 5.0 v voltage range holding high it changes automatic detection sensitivity v 18l ? 0.0 ? 0.8 v voltage range holding low maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 7 sdc00044aeb pin no. pin name voltage of pin remarks low high 7 entry signal on/off signal off signal on in case of signal off, the alarm signal is always on. 39 agc on/off agc off agc on ? 17 signal automatic automatic distinction automatic distinction ? detection function off on 5 standby on/off stb on stb off ? 35 sp power save on/off save on save off the power saving operation (sp off) (sp on) by pin 35 has priority over any automatic detection 18 the signal automatic detection low sensitivity mode high sensitivity mode the sensitivity changes sensitivity difference is about 6 db. terminal equivalent circuits pin no. equivalent circuits description corrugation and voltage 28 ? v cc _sp: dc 5 v 29 it is the specifically designed power pin of the speaker amplifier. ? pin 28 is for r-channel ? pin 29 is for l-channel because the big electric current flows,it is desirable to separate from the v cc line to the other power pin on the board pattern. control terminal , the mode table parameter symbol conditions min typ max unit voltage holding mode (continued) it changes agc-on level v 36l ? 0.0 ? 0.5 v voltage range holding standard voltage it changes agc-on level v 36c ? ? open ? v voltage range holding ref. ? 1 db it changes agc-on level v 36h ? 2.5 ? 5.0 v voltage range holding ref. ? 3 db electrical characteristics at v cc = 5 v, v cc_ sp = 5 v, (ta = 25 c 2 c unless otherwise specified.) (continued) note) * : the holding range of control voltage is shown in page 6 to page 7 of electrical characteristics. pin no. pin name voltage of pin low open high 36 at the time of agc: on, reference level reference level reference level it changes on level. on ? 1 db on ? 3 db on maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 8 sdc00044aeb pin no. equivalent circuits description corrugation and voltage 25 speaker output: dc 2.2 v 26 it is output pins of the speaker ac 4 dbv 31 amplifier. it becomes btl output. 32 the l-channel positive phase output pin: pin 32, pin 33 pin 32, pin 33 pin 24, pin 25 24 the l-channel negative phase output pin: positive 27 pin 30, pin 31 30 the r-channel positive phase output pin: 31 pin 24, pin 25 the r-channel negative phase output pin: pin 26, pin 27 to reduce voltage loss by the wire pin 30, pin 31 resistance in maximum output, it makes pin 26, pin 27 output 2 pins. also, when the speaker amplifier saves power, too, dc voltage is maintained. the output impedance: equal to or less than 10 ? 23 ? gnd: dc 0 v 34 it is gnd pin for the speaker amplifier. pin 23 is for r-channel pin 34 is for l-channel because the big electric current flows, it is desirable to separate from the gnd line to the other gnd pin on the board pattern. also, it isn't con- nected with the s ubstrate potential in the ic. 22 audio signal automatic detection signal nothing distinction output: dc 0 v it outputs the distinction result of the signals there audio signal automatic detection circuit. being the output form is the open collector dc 5 v output from of the npn transistor. therefore, the pull rises and uses for the power by the external resistance ( equal to or more than 10 k ? ). signal's there being: output high signal nothing : output low open collector output the electric current ability: equal to or more than 100 a terminal equivalent circuits (continued) 22 3.6 k ? 18 k ? pin 31, pin 32, pin 25, pin 26 pin 30, pin 33, pin 24, pin 27 v cc _sp (5.0 v) maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 9 sdc00044aeb pin no. equivalent circuits description corrugation and voltage 21 audio automatic detecting detection signal nothing pin: dc 0 v it connects a condenser for the peak signals there detection. it is the circuit which detects being a peak after rectifying the audio signal dc 2 v of the audio signal automatic detection circuit in both waves. by changing a capacity value, the time which the power saving depends on in case of the switchover which is without signal with signal's there being can be changed. signal less time: constant current source signal's there being: emitter follower the output impedance: about 200 ? 15 ? gnd: dc 0 v 20 it is the gnd pin of the signal system. 37 it is connected with the substrate potential 42 of the ic. pin 15, pin 42 connect with 55 the lead frame of the ic. 19 v ref (sp): dc 2.2 v it is the standard voltage pin to fix the dc bias of the speaker output. it connects a condenser to remove a ripple. the output impedance: about 60 k ? 18 change the audio signal detection voltage in case sensitivity: of opening it is the pin to change the detections dc 1.45 v sensitivity of the audio signal automatic detection circuit. 2 choices of the high sensitivity mode and the low sensitivity mode are possible and it is possible to about 6 db change sensitivity. low: low sensitivity mode high: high sensitivity mode the output impedance: about 105 k ? terminal equivalent circuits (continued) 21 v reg (4.5 v) 100 ? 40 k ? 19 116 k ? 124 k ? v cc _sp (5.0 v) 18 40 k ? 200 k ? 96 k ? 200 k ? 96 k ? 9 k ? v reg (4.5 v) maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 10 sdc00044aeb pin no. equivalent circuits description corrugation and voltage 17 signal automatic detection function dc ? on/off control pin: we change an audio signal automatic detection function in on/off. in case of automatic detection off, it controls power saving by speaker with the manual with the power saving on/off pin. high: function on low: function off the entry impedance: the high impedance 16 speaker amplifier entry : dc 2.25 v 41 it is the voice input pins of the speaker ac ? 16 dbv amplifier. to make offset voltage in power saving on/off changing by the speaker amplifier amplifier little, it combines capacity. ( it makes pop noise small ). pin 16: r-channel sp amplifier entry pin 41: l-channel sp amplifier entry the entry impedance: about 50 k ? 14 agc amplifier output: dc 2.25 v 43 it is the output pin of the agc circuit ac ? 16 dbv to hold an output clip in excessive output of the speaker output. pin 14: the agc r-channel output pin 43: the agc l-channel output the output impedance: equal to or less than about 10 ? 13 alarm mix amplifier output pins: dc 2.25 v 44 it is output pins of the mix amplifier to ac ? 16 dbv mix an alarm signal and an audio signal. pin 13: r-channel output pin 44: l-channel output the output impedance: equal to or less than about 10 ? terminal equivalent circuits (continued) 17 80 k ? 8 k ? 220 k ? 44 k ? 8 k ? v reg (4.5 v) 50 k ? v ref (2.25 v) pin 16, pin 41 100 ? v reg (4.5 v) pin 14, pin 43 v reg (4.5 v) pin 13, pin 44 pin 12, pin 45 6.3 k ? 6.3 k ? 9 k ? maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 11 sdc00044aeb pin no. equivalent circuits description corrugation and voltage 12 alarm mix amplifier dc 2.25 v 45 negative feedback pins: it is the negative feedback of the mix amplifier to mix an alarm signal and an audio signal. it is possible to adjust in the direction which lowers the gain of the mix amplifier in putting resistance among above mentioned mix amplifier output pins. pin 12: r-channel negative feedback pin pin 45: l-channel negative feedback pin between pin 12 and pin 13 : about 9 k ? between pin 44 and pin 45 : about 9 k ? the entry impedance: equal to or less than about 10 ? 9 audio signal mix amplifier dc 2.25 v 48 output pin: ac ? 19 dbv it is the output of the mix amplifier to mix a signal from the modem, the beep, the pccard to an audio signal. pin 9: the r-channel output pin 48: the l-channel output the output impedance: equal to or less than about 10 ? 10 revision amplifier entry: dc ? 47 it is the amplifier entry to adjust an ac ? 19 dbv output level to the hp amplifier. it becomes the entry of the evr adjustment signal. the entry impedance: the high impedance terminal equivalent circuits (continued) v reg (4.5 v) pin 13, pin 44 pin 12, pin 45 6.3 k ? 6.3 k ? 9 k ? v reg (4.5 v) pin 9, pin 48 9 k ? 9 k ? pin 10, pin 47 v reg (4.5 v) maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 12 sdc00044aeb pin no. equivalent circuits description corrugation and voltage 7 audio signal on/off changing open voltage control pin: dc 1.45 v it is the control pin which changes whether to communicate an audio sig- nal to the amplifier to mix an alarm signal and an audio signal. at the time of off, only an alarm audio is output from the mix amplifier. high: signal on low: signal off the entry impedance: about 105 k ? 6 audio signal input: dc 2.25v 52 it enters a main audio signal. ac ? 16 dbv pin 6: r-channel entry pin 52: l-channel entry the entry impedance: about 45 k ? 4 pccard signal entry: dc 2.25v it is the entry pin to enter a signal ac ? 16 dbv from the pccard. with the audio signal mix amplifier of the following paragraph, the same signal is entered both by l-channel and r-channel. also, it has the function which is the same as the beep entry of pin 56, the modem entry by pin 54 completely. the entry impedance: about 45 k ? 3 ripple removal condenser pin dc 2.25 v for the regulator: to remove a power ripple with the regulator circuit to create the inner power (v reg ), it puts a condenser. the entry impedance: about 100 k ? terminal equivalent circuits (continued) 7 40 k ? 200 k ? 96 k ? 200 k ? 96 k ? 9 k ? v reg (4.5 v) v reg (4.5 v) 13.1 k ? 31.7 k ? v ref (2.25 v) pin 6, pin 52 v reg (4.5 v) 13.1 k ? 31.7 k ? v ref (2.25 v) 4 220 k ? 180 k ? v cc (5.0 v) 3 9 k ? maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 13 sdc00044aeb pin no. equivalent circuits description corrugation and voltage 2 alarm entry: dc 2.25 v it is the entry pin to enter an alarm ac ? 16 dbv signal. with the alarm mix amplifier, the same signal is entered both by l-channel and r-channel. the entry impedance: about 45 k ? 1 ? v cc : dc 5.0 v it is the power (v cc ) pin to supply the regulator circuit to create the inner power v reg with the voltage. it is separating from v cc _sp of pin 28, pin 29 fully inside. it is desirable to separate as far as it finishes coming out about the p board pattern, too. 5 standby on/off changing sw: open voltage it changes whether or not it makes dc 0 v this ic an operation condition or whether or not it makes it a standby. low: standby high: the operation condition in that the power changes a connected condition to the standby, the circuit electric current can be almost made 0. the entry impedance: about 80 k ? 56 beep input: dc 2.25 v it is the entry pin to enter beep signal. ac ? 16 dbv the same signal is entered both by l-channel and r-channel with the audio signal mix amplifier of the fol- lowing paragraph. also, it has the func- tion which is the same as the pccard sig- nal entry by pin 4, the modem signal entry by pin 54 completely. the entry impedance: about 45 k ? terminal equivalent circuits (continued) v reg (4.5 v) 13.1 k ? 31.7 k ? v ref (2.25 v) 2 80 k ? 240 k ? 5 13.1 k ? 31.7 k ? v ref (2.25 v) 56 maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 14 sdc00044aeb pin no. equivalent circuits description corrugation and voltage 53 v ref : dc 2.25 v with the pin to fix the bias voltage (the operation point) of the system which the inner power (v reg ) works, it becomes 1/2v reg (v). to remove noise, it connects a condenser with the interval of between pin 53 and gnd. the entry impedance: about 80 k ? 54 modem input: dc 2.25 v it is the entry pin to enter a signal ac ? 16 dbv from the modem. with the audio signal mix amplifier of the following para- graph, the same signal is entered both by l-channel and r-channel. also, it has the function which is the same as the pccard signal entry by pin 4, the beep signal entry by pin 56 completely. the entry impedance: about 45 k ? 51 the signal detection system dc 2.25 v pre-amplifier negative feedback pin: it is the negative feedback pin of the signal detection system pre-amplifier. it is possible to adjust in the direction with the output (pin 50) which lowers a gain by adding external resistance between. the entry impedance: about 0 ? 50 the signal detection system dc 2.25 v pre-amplifier output pin: ac ? 10 dbv it is the output pin of the signal detection system pre-amplifier. it is possible to adjust in the direction which lowers a gain by adding external resistance among the negative feedback pins (pin 51). the entry impedance: about 0 ? terminal equivalent circuits (continued) 160 k ? 160 k ? v reg (4.5 v) 53 v reg (4.5 v) 13.1 k ? 31.7 k ? v ref (2.25 v) 54 51 v reg (4.5 v) 50 3.5 k ? 21.8 k ? 51 v reg (4.5 v) 50 3.5 k ? 21.8 k ? maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 15 sdc00044aeb pin no. equivalent circuits description corrugation and voltage 40 agc detection pin: dc 0 to 1 v it is the detection circuit to detect the signal level of the agc circuit of the sp output for the clip prevention. it connects a condenser for the detection. the entry impedance: unsettled 39 agc on/off control pin: dc ? it is the pin which controls the operating operation of the agc circuit of the sp output for the clip prevention in on/off. at the time of off, the agc circuit doesn't work. low: agc-off high: agc-on the entry impedance: about 76 k ? 38 offset cancellation pin: dc 2.25 v it is the condenser connection pin of the offset cancellation circuit to remove the dc offset voltage of the signal which enters a distinction circuit in the audio signal automatic detection system. as the principle, it composes hpf by entry impedance "r" and connection condenser "c". the entry impedance: about 80 k ? 36 it changes agc-on level: dc 1.5 v it is the pin which changes the on level of agc. low : the standard level open: ? 1 db of standards high : ? 3 db of standards the entry impedance: about 120 k ? terminal equivalent circuits (continued) 40 v reg (4.5 v) 90 ? 80 k ? 39 61 k ? 8 k ? 220 k ? 44 k ? 8 k ? v reg (4.5 v) 15 k ? 38 v reg (4 v) 80 k ? 36 40 k ? 240 k ? 120 k ? 216 k ? 96 k ? v reg (4.5 v) 48 k ? maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 16 sdc00044aeb pin no. equivalent circuits description corrugation and voltage 35 sp amplifier power saving dc 1.3 v on/off control pin: it is the pin which controls power saving by the sp amplifier. at the time of on in addition to the control in case of automatic distinction function off, too, power saving on by pin 50 has priority over. the entry impedance: about 137 k ? 8 standard bias source for evr: dc 2.25 v 49 it is possible to use as gnd (the dc bias source) ac when connecting external evr. it is possible to attenuate attenuate in the ac signal without cutting a signal system in "c". the output impedance: equal to or less than about 10 ? 11 output pins for the hp amplifier: dc 2.25 v 46 it is output pins for the external ac dbv hp amplifier. the signal which was adjusted in the volume in evr can be output by the low impedance. the output impedance: equal to or less than about 10 ? terminal equivalent circuits (continued) 35 80 k ? 200 k ? 80 k ? 160 k ? 68 k ? v reg (4.5 v) v reg (4.5 v) v ref dc (2.25 v) pin 8, pin 49 v reg (4.5 v) pin 11, pin 46 maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 17 sdc00044aeb technical data 1. power dissipation of package hsop056-p-0300a p d ? t a power dissipation p d (w) 0.000 1.000 2.000 1.572 3.000 4.000 5.000 4.280 0 25 150 125 ambient temperature t a (c) 50 75 100 mounted on stndard board (50 50 0.8 mm 3 ) r th(j-a) = 79.5c/w mounted on four layers of stndard board (50 50 0.8 mm 3 ) r th(j-a) = 29.2c/w independent ic without a heat sink r th( j-a) = 144.9c/w 0.862 note) * : the above characteristic is a reference value in case of design and is not a guarantee value. maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 18 sdc00044aeb technical data (continued) 1) sp amplifier (1) l ? in,r ? in l ? out,r ? out mode sp i/o characteristics ? 8? sp i/o characteristics ? 8? sp output frequency characteristics ? 8? sp output frequency characteristics ? 8? ? 30 ? 25 ? 20 ? 15 ? 10 ? 5 0 5 10 ? 50 ? 40 ? 30 ? 20 ? 10 0 input level (dbv) sp output level (dbv) 15 v cc = 5 v v cc_ sp = 5 v l-in, r-in l-out, r-out f req = 1 khz lpf: 30 khz agc: off automatic detection on sp output distorition thd (%) 0.01 10 1 0.1 ? 50 ? 40 ? 30 ? 20 ? 10 0 input level (dbv) v cc = 5 v v cc_ sp = 5 v l-in, r-in l-out, r-out f req = 1 khz hpf: 400 hz lpf: 30 khz agc: off automatic detection on sp output level (dbv) ? 10 10 5 0 ? 5 100 10 0.1 1 0.01 input freqency (khz) v cc = 5 v v cc_ sp = 5 v v in = ? 16 dbv l-in, r-in l-out, r-out agc: off automatic detection on 0.001 10 1 0.1 0.01 100 10 0.1 1 0.01 v cc = 5 v v cc_ sp = 5 v v in = ? 16 dbv l-in, r-in l-out, r-out agc: off automatic detection on sp output distorition thd (%) input frequency (khz) maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 19 sdc00044aeb technical data (continued) 2. main characteristics (continued) 1) sp amplifier (continued) (2) beep l ? out,r ? out mode sp i/o characteristics ? 8? sp i/o characteristics ? 8? ? 30 ? 25 ? 20 ? 15 ? 10 ? 5 0 5 10 ? 50 ? 40 ? 30 ? 20 ? 10 0 input level (dbv) sp output level (dbv) 15 v cc = 5 v v cc_ sp = 5 v beep l-out, r-out f req = 1 khz lpf: 30 khz agc: off automatic detection on sp output distorition thd (%) 0.01 10 1 0.1 ? 50 ? 40 ? 30 ? 20 ? 10 0 input level (dbv) v cc = 5 v v cc_ sp = 5 v beep l-out, r-out f req = 1 khz hpf: 400 hz lpf: 30 khz agc: off automatic detection on sp output frequency characteristics ? 8? sp output frequency characteristics ? 8? sp output level (dbv) ? 10 10 5 0 ? 5 100 10 0.1 1 0.01 input frequency (khz) v cc = 5 v v cc_ sp = 5 v v in = ? 16 dbv beep l-out, r-out agc: off automatic detection on sp output distorition thd (%) 0.001 10 1 0.1 0.01 100 10 0.1 1 0.01 input frequency (khz) v cc = 5 v v cc_ sp = 5 v v in = ? 16 dbv beep l-out, r-out agc: off automatic detection on maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 20 sdc00044aeb technical data (continued) 2. main characteristics (continued) 2) mix amplifier 1 (1) l ? in,r ? in l ? out,r ? out mode mix amplifier 1 system i/o characteristics mix amplifier 1 system i/o distortion characteristics mix amplifier 1 output (pin 11) level (dbv) ? 40 10 ? 20 ? 30 ? 10 0 0 ? 20 ? 10 ? 30 input level (dbv) v cc = 5 v v cc_ sp = 5 v l-in, r-in l-out, r-out f req = 1 khz lpf : 30 khz agc: on automatic detection on mix amplifier 1 output (pin 11) distrition thd (%) 0.001 10 1 0.1 0.01 0 ? 20 ? 10 ? 30 input level (dbv) v cc = 5 v v cc_ sp = 5 v l-in, r-in l-out, r-out f req = 1 khz hpf : 400 hz lpf : 30 khz agc: on automatic detection on mix amplifier 1 system mix amplifier 1 system i/o characteristics frequency characteristics i/o characteristics frequency characteristics mix amplifier 1 output (pin 11) level (dbv) ? 30 0 ? 10 ? 20 100 10 0.1 1 0.01 input frequency (khz) v cc = 5 v v cc_ sp = 5 v l-in, r-in l-out, r-out v in = ? 16 dbv agc: on automatic detection on mix amplifier 1 output (pin 11) distorition thd (%) 0.001 10 1 0.1 0.01 100 10 0.1 1 0.01 input frequency (khz) v cc = 5 v v cc_ sp = 5 v l-in, r-in l-out, r-out v in = ? 16 dbv agc: on automatic detection on maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 21 sdc00044aeb technical data (continued) 2. main characteristics (continued) 3) mix amplifier 2 (1) alarm l-out,r-out mode mix amplifier 1 system mix amplifier 2 system i/o characteristics i/o distortion characteristics mix amplifier 2 system mix amplifier 2 system i/o characteristics frequency characteristics i/o characteristics frequency characteristics mix amplifier 1 output (pin 13) level (dbv) ? 40 10 ? 20 ? 30 ? 10 0 0 ? 20 ? 10 ? 30 input level (dbv) v cc = 5 v v cc_ sp = 5 v alarm l-out, r-out f req = 1 khz lpf : 30 khz agc: on automatic detection on mix amplifier 1 output (pin 13) distrition thd (%) 0.001 10 1 0.1 0.01 0 ? 20 ? 10 ? 30 input level (dbv) v cc = 5 v v cc_ sp = 5 v alarm l-out, r-out f req = 1 khz hpf : 400 hz lpf : 30 khz agc: on automatic detection on mix amplifier 1 output (pin 13) level (dbv) ? 30 0 ? 10 ? 20 100 10 0.1 1 0.01 input frequency (khz) v cc = 5 v v cc_ sp = 5 v alarm l-out, r-out v in = ? 13 dbv agc: on automatic detection on 0.01 10 1 0.1 100 10 0.1 1 0.01 input frequency (khz) v cc = 5 v v cc_ sp = 5 v alarm l-out, r-out v in = ? 13 dbv agc: on automatic detection on mix amplifier 1 output (pin 13) level (dbv) maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 22 sdc00044aeb technical data (continued) 2. main characteristics (continued) 4) pre-amplifier (1) r-in pin 50 mode signal detection system signal detection system i/o characteristics pre-amplifier frequency characteristics signal detection system signal detection system i/o characteristics pre-amplifier i/o distorted characteristics preamplifier output (pin 50) level (dbv) ?6 0 ? 50 ?4 0 ?3 0 ?2 0 ?1 0 0 10 ?8 0 ?7 0 ?6 0 ?5 0 ?4 0 ? 30 input level (dbv) v cc = 5 v v cc_ sp = 5 v r-in pin 50 f req = 1 khz pin 18 = low low sensitivity mode ?6 0 ? 50 ?4 0 ?3 0 ?2 0 ?1 0 0 10 ?8 0 ?7 0 ?6 0 ?5 0 ?4 0 -30 input level (dbv) v cc = 5 v v cc_ sp = 5 v r-in pin 50 f req = 1 khz p18 = high high sensitivity mode preamplifier output (pin 50) level (dbv) preamplifier output (pin 50) level (dbv) ? 30 0 ? 10 ? 20 100 10 0.1 1 0.01 input frequency (khz) v cc = 5 v v cc_ sp = 5 v r-in pin 50 v in = ? 45 dbv pin 18 = low low sensitivity mode preamplifier output (pin 50) level (dbv) ? 30 0 ? 10 ? 20 100 10 0.1 1 0.01 input frequency (khz) v cc = 5 v v cc_ sp = 5 v r-in pin 50 v in = ? 45 dbv pin 18 = high high sensitivity mode maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 23 sdc00044aeb technical data (continued) 2. main characteristics (continued) 5) agc (1) l ? in,r ? in l ? out,r ? out mode agc i/o characteristics agc output distortion characteristics agc frequency distortion characteristics beep: agc frequency distortion characteristics ? 30 ? 25 ? 20 ? 15 ? 10 ? 5 0 5 10 ? 50 ? 40 ? 30 ? 20 ? 10 0 input level (dbv) sp output level (dbv) 15 reference output reference ? 1 dbv output reference ? 3 dbv output v cc = 5 v v cc_ sp = 5 v l-in, r-in l-out, r-out f req = 1 khz rl = 8 ? agc: on automatic detection on sp output distorition thd (%) 0.01 10 1 0.1 ? 50 ? 40 ? 30 ? 20 ? 10 0 input level (dbv) v cc = 5 v v cc_ sp = 5 v l-in, r-in l-out, r-out f req = 1 khz rl = 8 ? agc: on automatic detection on reference output distorition reference ? 1 dbv output distorition reference ? 3 dbv output distorition sp output distorition thd (%) ? 30 0 ? 10 ? 20 100 10 0.1 1 0.01 input frequency (khz) reference output distorition reference ? 1 dbv output distorition reference ? 3 dbv output distorition v cc = 5 v v cc_ sp = 5 v l-in, r-in l-out, r-out v in = 1 khz rl = 8 ? agc: on automatic detection on speaker output distorition thd (%) ? 30 0 ? 10 ? 20 100 10 0.1 1 0.01 input frequency (khz) v cc = 5 v v cc_ sp = 5 v l-in, r-in l-out, r-out v in = 1 khz rl = 8 ? agc: on automatic detection on reference output distorition reference ? 1 dbv output distorition reference ? 3 dbv output distorition (2) beep l ? out,r ? out mode beep: agc i/o characteristics beep: agc output distortion characteristics ? 30 ? 25 ? 20 ? 15 ? 10 ? 5 0 5 10 ? 50 ? 40 ? 30 ? 20 ? 10 0 input level (dbv) sp output level (dbv) 15 reference output reference ? 1 dbv output reference ? 3 dbv output v cc = 5 v v cc_ sp = 5 v beep l-out, r-out f req = 1 khz rl = 8 ? agc: on automatic detection on speaker output level thd (%) 0.01 10 1 0.1 ? 50 ? 40 ? 30 ? 20 ? 10 0 input level (dbv) reference output distorition reference ? 1 dbv output distorition reference ? 3 dbv output distorition v cc = 5 v v cc_ sp = 5 v beep l-out, r-out f req = 1 khz rl = 8 ? agc: on automatic detection on maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
AN12940AA 24 sdc00044aeb usage notes 1. avoid the power line short and the ground short of the pins. 2. especially positive phase speaker output pins (pin 24, pin 25, pin 32 and pin 33) and reverse phase speaker output pins (pin 26, pin 27, pin 30 and pin 31) have the possibility of break-down caused by the power line short and the ground short. be sure to avoid power line short, ground short and load short. maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
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