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1 publication date: august 2008 sdf00044aeb data sheet AN12946A part no. package code no. hqfp048-p-0707 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/
AN12946A 2 sdf00044aeb contents ? overview ???????????????????.??????????????????????. 3 ? features ???????????????????.??????????????????????. 3 ? applications ???.????????????????????????????????????? 3 ? package ?????????????????????????????????????????. 3 ? type ?????????????...?????????????????????????????. 3 ? application circuit example (block diagram) ?.???????????????????????? 4 ? pin descriptions ???????..??????????????????????????????. 5 ? absolute maximum ratings ????????..?????..???????????????????. 7 ? operating supply volt age range ????..?????? ????????????????????. 7 ? electrical characteristics ???????.???????.???????.????????????. 8 ? electrical characteristics (reference values for design) ???????.???????.??????. 10 ? technical data ??????????????.???????.?????????????????. 11 1. stby-control ????........?????.???????.???????????????????. 11 2. i/o block circuit diagrams and pin function descriptions ????........??????????????. 12 3. turn on time descriptions ????........???????.???????????????????. 23 4. the power supply and logic s equence ????.... ....?????. ????????????????. 24 5. p d ? t a diagram ????........????.???????.???????????????????. 25 ? usage notes ???.?..????? ???.???????.????? ??????????????. 26 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/
AN12946A 3 sdf00044aeb AN12946A stereo btl amplifier ic with bu ilt-in mic amplifier and regulator ? overview AN12946A is a cmos output power amplifier. the parallel control method is adopted selecting various modes including standby function on/off. moreover, a power supply for codec and the microphone amplifier necessary for notebook pc are built-in. ? features y maximum power of 1 w (vcc_sp = 5 v, rl = 8 , thd = 10%) y standby (stby) function for speaker amplifier, microphone amplifier and regulator y rf noise prevention y built-in over current protection y beep detector ? applications y notebook pc ? package y 48 pin plastic quad flat package with heat sink (qfp type) ? type y silicon monolithic bipolar ic 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/
AN12946A 4 sdf00044aeb ? application circuit ex ample (block diagram) 12345 6789101112 13 14 15 16 17 18 19 20 21 22 23 24 36 35 34 33 32 31 30 29 28 27 26 25 48 47 46 45 44 43 42 41 40 39 38 37 vcc_spl 1 f gnd_spl vcc_spr 1 f vrefsp rl = 8 gnd_spr 1 f sp_outr rl = 8 sp_outl sp_inr 1 f vref sp_stb2 sp_stb1 vcc_sp 5.0 v + + + beep_in mic_stb1 vcc_reg 5.0 v reg_stb test1 test2 test3 test4 0.1 f 0.47 f 1 f + reg_out det_on/off mic_stb2 mic_stb3 micoutl micoutc micoutr sp_inl 0.47 f 1 f sp gain2 beep det sp gain1 1 f 1 f 1 f 1 f 33 pf 33 pf 33 pf 1 f 1 f 0.47 f mic_inl mic_inc mic_inr it is recommended to use pin1 capacitor of the x7r characteristic note) 1. this application circuit is shown as an example but does not guarantee the design for mass production set. 2. this block diagram is for explaining functions. the part of the block diagram may be omitted, or it may be simplified. protector protector int reg sp stby on / off ?3 db +14 db +14 db +14 db +14 db ?3 db beep in reg 5 v in 3.3 v out micl +15 db micc +15 db micr +15 db +2/0/?2/?4 db sp gain selection signal det +2/0/?2/?4 db 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/
AN12946A 5 sdf00044aeb ? pin descriptions sp amp. l-channel output (+) output sp_outl+ 22 sp amp. l-channel output (?) output sp_outl? 21 sp amp. l-channel output (?) output sp_outl? 20 n.c. ? n.c. 25 ground for sp l-channel amp system ground gnd_spl 24 sp amp. l-channel output (+) output sp_outl+ 23 speaker amp gain setting terminal input spgain2 28 speaker amp gain setting terminal input spgain1 27 n.c. ? n.c. 26 beep detector on/off control input det_on/off 29 sp standby on/off control input sp_stby1 30 sp standby on/off control input sp_stby2 31 l-channel mic standby on/off control input micl_stby 32 power supply for sp l-channel amp system power supply vcc_spl 19 power supply for sp r-channel amp system power supply vcc_spr 18 sp amp. r-channel output (?) output sp_outr? 17 sp amp. r-channel output (?) output sp_outr? 16 sp amp. r-channel output (+) output sp_outr+ 15 sp amp. r-channel output (+) output sp_outr+ 14 ground for sp r-channel amp system ground gnd_spr 13 terminal for testing (please connect to ground) input test3 12 terminal of reference voltage for sp amp. input vrefsp 11 terminal for testing (please connect to ground) input test2 10 r-channel speaker amplifier input input sp_inr 9 ground ground gnd 8 l-channel speaker amplifier input input sp_inl 7 ground ground gnd 6 beep input input beep_in 5 beep detect cap input beepdet 4 terminal of reference voltage input vref 3 terminal for testing (please connect to ground) input test1 2 power supply for codec output reg_out 1 description type pin name pin no. 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/
AN12946A 6 sdf00044aeb ? pin descriptions (continued) regulator standby on/off control input reg_stby 48 power supply for regulator power supply vcc_reg 47 ground ground gnd 46 r-channel mic input output mic_inr 45 ground ground gnd 44 r-channel mic output output micoutr 43 c-channel mic output output micoutc 42 ground ground gnd 41 c-channel mic input input mic_inc 40 ground ground gnd 39 l-channel mic input input mic_inl 38 ground ground gnd 37 l-channel mic output output micoutl 36 terminal for testing (please connect to ground) input test4 35 r-channel mic standby on/off control input micr_stby 34 c-channel mic standby on/off control input micc_stby 33 description type pin name pin no. 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/
AN12946A 7 sdf00044aeb ? absolute maximum ratings ? operating supply voltage range 5.75 vcc_reg *1 v 5.75 vcc_spl vcc_spr supply voltage 1 storage temperature operating ambient temperature power dissipation supply current parameter *3 c ?55 to +150 t stg 5 *3 c ?30 to +85 t opr 4 *2 mw 355 p d 3 ? a ? i cc 2 note unit rating symbol a no. 4.5 to 5.5 vcc_spl vcc_spr 4.5 to 5.5 range ? v vcc_reg supply voltage range note unit symbol parameter note) *1: the range under absolute maximum ratings, power dissipation. *2: power dissipation shows the value of only package at t a = 85 c. when using this ic, refer to the 5. p d ?t a diagram in the ? technical data and use under the condition not exceeding the allowable value. *3: expect for the storage temperature and operating ambient temperature, all ratings are for t a = 25 c. note) the values under the condition not exceeding 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/
AN12946A 8 sdf00044aeb mv dbv db ? D 80 70 vinl or vinr = ?17.0 dbv, f = 1 khz, a curve filter, detect = off vctspl vctspr sp cross talk 12 ? ?86 ?100 D vinl = vinr = ?17.0 dbv, f = 1 khz, a curve filter, detect = off vsspol vsspor sp output level at standby 13 ? 35 0 ? non-signal, detect = off vdcspl vdcspr sp output dc offset voltage 14 * ma 5 2.5 ? non-signal, sp_stb = on, reg_stb = on, mic_stb = off, etect = off ivcc4a circuit current 4a at non-signal (vcc_sp system) 4 * a 10 0.1 ? non-signal, sp_stb = on, reg_stb = on, mic_stb = on, detect = off ivcc1b circuit current 1b at non-signal (vcc_sp system) 5 ? db 1.0 0 ?1.0 vinl = vinr = ?17.0 dbv, f = 1 khz, detect = off chbs sp channel balance 11 ? a 10 0.1 ? non-signal, sp_stb = on, reg_stb = on, mic_stb = on, detect = off ivcc2b circuit current 2b at non-signal (vcc_reg) 6 * ma 5 2.5 ? non-signal, sp_stb = on, reg_stb = on, mic_stb = on, detect = on ivcc3a circuit current 3a at non-signal (vcc_sp system) 3 ? ma 4 2.0 ? non-signal, sp_stb = off, reg_stb = off, mic_stb = on, detect = off ivcc2a circuit current 2a at non-signal (vcc_reg) 2 speaker amplifier characteristics sp_stb = off, reg_stb = off, mic_stb = on thd = 10% , f = 1 khz, detect = off vinl = vinr = ?17.0 dbv, f = 1 khz to thd 5th, detect = off ? dbv 2.0 0 ?2.0 vinl = vinr = ?17.0 dbv, f = 1 khz, detect = off vspol vspor sp reference output level 7 ? % 0.1 0.05 D thspol thspor sp reference output distortion 8 ? dbv ?73 ?79 D non-signal a curve filter, detect = off vnspol vnspor sp output noise voltage 9 ? w D 1 0.8 vmspol vmspor sp maximum rating output 10 circuit current * ma 25 15 6 non-signal, sp_stb = off, reg_stb = on, mic_stb = on, detect = off ivcc1a circuit current 1a at non-signal (vcc_sp system) 1 limits typ unit max note min conditions symbol parameter b no. ? electrical characteristics at vcc_spl = vcc_spr = vcc_reg = 5.0 v, sp_gain = 17 db, rl = 8 note) t a = 25 c 2 c unless otherwise specified. note) *: minimum capacitor that achieves proper operation is 0.7 f and this capacitance must fall within the range of the operating temperature of 30%. please check the total range of the operating condition of the capacitor to fulfill the minimum requirement of the above-men tioned before selecting it for your application. minimum value of esr is 5 m or more. a capacitor of x7r characteristics has a temperature range of ?40 c to +125 c. 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/
AN12946A 9 sdf00044aeb ? % 5 1 ? iout = 200 ma lodreg2 load regulation 2 23 ? % 1 0.08 ? vin = ?22.0 dbv, f = 1 khz, 1ch out, to thd 5th thmpo2l thmpo2c thmpo2r mic amp. output distortion 2 17 ? db 1.0 0.0 ?1.0 vin = ?39.0 dbv, f = 1 khz, l/c/r difference chbmp mic amp. channel balance 19 ? v 3.37 3.3 3.23 iout = 1 ma voreg output voltage 20 linear regulator characteristics sp_stb = off, reg_stb = off, mic_stb = on, detect = off ? %/v +0.3 +0.01 ?0.3 vin = 4.5 v, 5.5 v, iout = 1 ma linreg line regulation 21 microphone amplifier characteristics sp_stb = on, reg_stb = off, mic_stb = off, detect = off vin = ?39.0 dbv, f = 1 khz, 1ch out, to thd 5th ? dbv ?22.5 ?24.0 ?25.5 vin = ?39.0 dbv, f = 1 khz, 1ch out vmpol vmpoc vmpor mic amp. reference output level 15 ? % 0.045 0.015 ? thmpo1l thmpo1c thmpo1r mic amp. output distortion 1 16 ? dbv ?96 ?100 ? non-signal, 1ch out, a curve filter vnmpol vnmpoc vnmpor mic amp. output noise voltage 18 ? % /ma ? 0.0034 ? iout = 1 ma, 150 ma lodreg1 load regulation 1 22 limits typ unit max note min conditions symbol parameter b no. ? electrical characteristics at vcc_spl = vcc_spr = vcc_reg = 5.0 v, sp_gain = 17 db, rl = 8 (continued) note) t a = 25 c 2 c unless otherwise specified. 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/
AN12946A 10 sdf00044aeb ? % /ma ? 0.0034 ? iout = 1 ma, 150 ma lodreg1 load regulation 1 26 ? ? ? ? db ? 500 ? vout = gnd ireglim current limit db ? 50 ? vripple = 200 mv[p-p], f = 10 khz, iout = 1 ma regrr2 ripple rejection 2 db ? 60 ? vripple = 200 mv[p-p], f = 1 khz, iout = 1 ma regrr1 ripple rejection 1 linear regulator characteristics sp_stb = off, reg_stb = off, mic_stb = on, detect = off 27 28 29 ? db ? 60 ? vripple = 200 mv[p-p], f = 1 khz, 1-ch. out, a curve filter vmrrl vmrrc vmrrr mic amp. ripple rejection microphone amplifier characteristics sp_stb = on, reg_stb = off, mic_stb = off, detect = off 25 db ? 60 ? vripple = 200 mv[p-p], f = 1 khz, a curve filter , detect = off vsprrl vsprrr sp ripple rejection speaker amplifier characteristics sp_stb = off, reg_stb = off, mic_stb = on 24 ? v vcc ? 4.0 ? vhi2 high level 2 (pin 27, 28) 33 ? v vcc ? 2.5 ? vhi1 high level 1 (pin 29, 30, 31, 32, 33, 34, 48) 31 ? v 0.5 ? 0 ? vlo2 low level 2 (pin 27, 28) 32 ? v 0.5 ? 0 ? vlo1 low level 1 (pin 29, 30, 31, 32, 33, 34, 48) 30 threshold voltage level limits typ unit max note min conditions symbol parameter b no. ? electrical characteristics (reference values for design) at vcc_spl = vcc_spr = vcc_reg = 5.0 v, sp_gain =17 db, rl= 8 note) t a = 25 c 2 c unless otherwise specified. the characteristics listed below are reference values for design of the ic and are not guaranteed by inspection. if a problem does occur related to these characteristics, matsushita will respond in good faith to user concerns. 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/
AN12946A 11 sdf00044aeb ? technical data 1. stby-control off low high pin 31 (sp_stby2) high high low pin voltage off high sp_stby on/off off on low low pin 30 (sp_stby1) (a) sp_stby on/off selection pin voltage detect on/off on off pin 29 (detect_on/off) high low (b) detect on/off selection pin voltage mic on/off on off pin 32, 33, 34 (mic_stby) high low (c) mic_stby on/off selection pin voltage reg on/off on off pin 48 (reg_stby) high low (d) reg_stby on/off selection (e) sp gain selection +15 db low high pin 28 (sp_gain2) high high low pin voltage +13 db high sp_gain selection +19 db +17 db low low pin 27 (sp_gain1) 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/
AN12946A 12 sdf00044aeb terminal for testing. please connect to ground. ? ? test1 2 input impedance = about 10 k input impedance = about 125 k output impedance = less than 1 impedance the reference voltage terminal for dc bias. please connect an external capacitor to remove any ripples present. vref dc 2 v 3 it is a capacitor terminal for the beep sound detection. the detection speed can be changed by changing the capacitance value. beepdet dc 2.8 v 4 it is an output terminal of the regulator. reg_out dc 3.3 v 1 description internal circuit waveform and voltage pin no. vcc_reg gnd 250k 250k gnd 3 vreg 10k gnd 10k 4 1 ? technical data (continued) 2. i/o block circuit diagrams and pin function descriptions note) the characteristics listed below are reference values based on the ic design and are not guaranteed. 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/
AN12946A 13 sdf00044aeb ? input impedance = about 20 k ? input impedance = about 20 k impedance it is a terminal gnd. ? gnd 6 it is an input terminal of the l-channel speaker amplifier. please insert a capacitor of 0.47 f in series with the pin. sp_inl dc 2 v 7 it is a terminal gnd. ? gnd 8 it is beep input terminal. please insert a capacitor of 0.1 f in series with the pin. beep_in dc 2 v 5 description internal circuit waveform and voltage pin no. 20k gnd vreg 5 k 5 6k gnd 14k vref 7 ? technical data (continued) 2. i/o block circuit diagrams and pin function descriptions (continued) note) the characteristics listed below are reference values based on the ic design and are not guaranteed. 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/
AN12946A 14 sdf00044aeb terminal for testing. please connect to ground. ? ? test2 10 the reference voltage terminal for dc bias of the output stage of a speaker amplifier system. please connect an external capacitor to remove any ripples present. input impedance = about 125 k vrefsp dc 2.5 v 11 ? input impedance = about 20 k impedance terminal for testing. please connect to ground. ? test3 12 it is an input terminal of the r-channel speaker amplifier. please insert a capacitor of 0.47 f in series with the pin. sp_inr dc 2 v 9 description internal circuit waveform and voltage pin no. vcc_spl(5v) 250k 250k gnd 11 6k gnd 14k vref 9 ? technical data (continued) 2. i/o block circuit diagrams and pin function descriptions (continued) note) the characteristics listed below are reference values based on the ic design and are not guaranteed. 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/
AN12946A 15 sdf00044aeb D output impedance = equal to or less than 1 output impedance = equal to or less than 1 D impedance output terminal of r-channel speaker amplifier. it is btl output. r-channel positive aspect output pin: pin 14, pin 15 r-channel reverse-aspect output pin: pin 16, pin 17 to decrease the voltage loss across the wire resistance during large current flows, the output is made into two terminals. please connect pin 14, pin 15, pin 16, and pin 17 respectively on the pcb. sp_outr(+) dc 2.5 v ac ?2 dbv 14 15 sp_outr(?) dc 2.5 v ac ?2 dbv 16 17 terminal vcc to supply voltage to speaker amplifier of r-channel. because of large current flows, it is preferable to separate as much as possible on the vcc system (pin 18, pin 19 and pin 47) on the pcb. D vcc_spr dc 5 v 18 terminal gnd for speaker amplifier of r-channel it is not connected with the substrate in ic. because of large current flows, it is preferable to separate the terminal gnd (pin 13 and pin 24) for the speaker amplifier and other terminals gnd as much as possible on a printed circuit board (pcb). D gnd_spr 13 description internal circuit waveform and voltage pin no. vcc_spr(5 v) gnd_spr 400k pin 16, 17 vcc_spr(5 v) gnd_spr 400k pin 14, 15 ? technical data (continued) 2. i/o block circuit diagrams and pin function descriptions (continued) note) the characteristics listed below are reference values based on the ic design and are not guaranteed. 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/
AN12946A 16 sdf00044aeb D output impedance = equal to or less than 1 output impedance = equal to or less than 1 D impedance output terminal of l-channel speaker amplifier. it is btl output. l-channel positive aspect output pin: pin 22, pin 23 l-channel reverse-aspect output pin: pin 20, pin 21 to decrease the voltage loss across the wire resistance during large current flows, the output is made into two terminals. please connect pin 20, pin 21, pin 22, and pin 23 respectively on the pcb. sp_outl(?) dc 2.5 v ac ?2 dbv 20 21 sp_outl(+) dc 2.5 v ac ?2 dbv 22 23 terminal gnd for speaker amplifier of l-channel. it is not connected with the substrate in ic. because of large current flows, it is preferable to separate the terminal gnd (pin 13 and pin 24) for the speaker amplifier and other terminals gnd as much as possible on the pcb. D gnd_spl 24 terminal vcc to supply voltage to speaker amplifier of l-channel. because of large current flows, it is preferable to separate as much as possible on the vcc system (pin 18, pin 19 and pin 47) on the pcb. D vcc_spl dc 5 v 19 description internal circuit waveform and voltage pin no. vcc_spl(5 v) gnd_spl 400k pin 22, 23 vcc_spl(5 v) gnd_spl 400k pin 20, 21 ? technical data (continued) 2. i/o block circuit diagrams and pin function descriptions (continued) note) the characteristics listed below are reference values based on the ic design and are not guaranteed. 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/
AN12946A 17 sdf00044aeb input impedance = hi-z input impedance = hi-z ? ? impedance ? n.c. 26 it is a speaker gain setting terminal. please do not leave it unconnected. please connect either to 5 v power supply or gnd. refer to the control terminal mode table of page no.11 for the mode setting. spgain1 27 spgain2 28 no wiring. ? n.c. 25 description internal circuit waveform and voltage pin no. vccsp gnd 80k vccsp gnd 80k 27 28 ? technical data (continued) 2. i/o block circuit diagrams and pin function descriptions (continued) note) the characteristics listed below are reference values based on the ic design and are not guaranteed. 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/
AN12946A 18 sdf00044aeb input impedance = about 80 k input impedance = about 80 k input impedance = about 80 k input impedance = about 80 k impedance it is a control terminal that determines the speaker amplifier system is in a state of operation or standby. the speaker amplifier system operates at pin 30 or pin 31 high. when pin 29, pin 30, pin 31, pin 32, pin 33, pin 34 and pin 48 all are low, it completely enters the state of standby, and most circuit currents are 0 in this ic. please refer to the control terminal mode table of page no.11 for the mode setting. sp_stby1 30 sp_stby2 31 it is a control terminal that determines the l-channel microphone amplifier system is in a state of operation or standby. at pin 32 high, the l-channel. microphone amplifier turns on, and turns off at low. please refer to the control terminal mode table of page no.11 for the mode setting. micl_stby 32 it is a control terminal that determines the beep detector is in a state of operation or standby. the beep sound detection operates at pin 29 high. when pin 29 is low, the beep sound detection is turned off. please refer to the control terminal mode table of page no.11 for the mode setting. det_on/off 29 description internal circuit waveform and voltage pin no. 80k gnd 300k 29 80k gnd 300k 30 80k gnd 300k 32 80k gnd 300k 31 ? technical data (continued) 2. i/o block circuit diagrams and pin function descriptions (continued) note) the characteristics listed below are reference values based on the ic design and are not guaranteed. 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/
AN12946A 19 sdf00044aeb terminal for testing. please connect to ground. ? ? test4 35 it is a control terminal that determines the c-channel microphone amplifier system is in a state of operation or standby. at pin 33 high, the c-channel microphone amplifier turns on, and turns off at low. please refer to the control terminal mode table of page no.11 for the mode setting. input impedance = about 80 k micc_stby 33 output impedance = equal to or less than 1 input impedance = about 80 k impedance the output terminal of the microphone amplifier l-channel. micoutl dc 2 v 36 it is a control terminal that determines the r-channel microphone amplifier system is in a state of operation or standby. at pin 34 high, the c-channel microphone amplifier turns on, and turns off at low. please refer to the control terminal mode table of page no.11 for the mode setting. micr_stby 34 description internal circuit waveform and voltage pin no. 80k gnd 300k 34 80k gnd 300k 33 gnd vreg 36 ? technical data (continued) 2. i/o block circuit diagrams and pin function descriptions (continued) note) the characteristics listed below are reference values based on the ic design and are not guaranteed. 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/
AN12946A 20 sdf00044aeb input impedance = about 53 k ? input impedance = about 53 k D impedance the input terminal of the microphone amplifier l-channel. please insert a capacitor of 1 f in series with the pin. mic_inl dc 2.0 v 38 it is a terminal gnd. ? gnd 39 the input terminal of microphone amplifier c-channel. please insert a capacitor of 1 f in series with the pin. mic_inc dc 2.0 v 40 it is a terminal gnd. D gnd 37 description internal circuit waveform and voltage pin no. 500 gnd vref 53k 38 500 gnd vref 53k 40 ? technical data (continued) 2. i/o block circuit diagrams and pin function descriptions (continued) note) the characteristics listed below are reference values based on the ic design and are not guaranteed. 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/
AN12946A 21 sdf00044aeb the output terminal of the microphone amplifier r-channel. output impedance = equal to or less than 1 micoutr dc 2 v 43 ? output impedance = equal to or less than 1 ? impedance the output terminal of the microphone amplifier c-channel. micoutc dc 2 v 42 it is a terminal gnd. ? gnd 44 it is a terminal gnd. ? gnd 41 description internal circuit waveform and voltage pin no. gnd vreg 42 gnd vreg 43 ? technical data (continued) 2. i/o block circuit diagrams and pin function descriptions (continued) note) the characteristics listed below are reference values based on the ic design and are not guaranteed. 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/
AN12946A 22 sdf00044aeb ? ? ? input impedance = about 53 k impedance it is a terminal gnd. ? gnd 46 it is a power supply terminal for regulator. ? vcc_reg 47 it is a control terminal that determines the regulator is in a state of operation or standby. at pin 48 high, the regulator turns on, and turns off at low. please refer to the control terminal mode table of page no.11 for the mode setting. reg_stb 48 the input terminal of the microphone amplifier r-channel. please insert a capacitor of 1 f in series with the pin. mic_inr dc 2.0 v 45 description internal circuit waveform and voltage pin no. 500 gnd vref 53k 45 80k gnd 300k 48 ? technical data (continued) 2. i/o block circuit diagrams and pin function descriptions (continued) note) the characteristics listed below are reference values based on the ic design and are not guaranteed. 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/
AN12946A 23 sdf00044aeb condition: speaker stby on off, reg_stby off, mic_stby on, vcc_sp = vcc_reg = 5 v, vin_sp = ?17 dbv, rl = 8 results (taken from waveform above) delay time taken for standby on off (sp o/p l): 556 s delay time taken for standby on off (sp o/p r): 560 s spout_ l = sp_l(+) ? sp_l(-) sp_l (-) sp_l (+) 556 s sp_r (-) sp_r (+) 560 s sp stby on off sp stby on off spout_ r = sp_r(+) ? sp_r(-) ? technical data (continued) 3. turn on time descriptions note) the characteristics listed below are reference values based on the ic design and are not guaranteed. 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/
AN12946A 24 sdf00044aeb sp _stby vcc_sp off on off on on off on off the basic procedure at the power-on 1) initially, the power off condition: sp_stby,reg_stby and mic_stby are in the on condition. 2) power on 3) sp_stby, reg_stby and mic_stby off 1) initially, the power on condition: sp_stby, reg_stby and mic_stby are in the off condition. 2) sp_stby, reg_stby and mic_stby off 3) power off y the sequence of vcc_sp and vcc_reg y the sequence of the power supply and each logic vcc_sp off on on off vcc_reg 1 ms or more 1 ms or more please bring up the power supply first, and then get stby off. when there is signal at beep_in, the speaker output signal will only appear 35 ms later after detect is turned on. this time is denoted as (a) in the above figure. when there is non-signal at beep_in, the speaker output will be muted for 70 ms or less after detect is turned on. this is because the anti-pop noise circuit is turned on. this time is denoted as (b) in the above figure. the timing control of power-on/off and each logic according to the procedure below should be applied for the best pop-noise performance caused during switching. there are no sequence for vcc_sp and vcc_reg. however, the rising and falling time of vcc_sp and vcc_reg requires 1 ms or more. reg _stby mic _stby detect off on on off (b) (a) the basic procedure at the power-off ? technical data (continued) 4. the power supply and logic sequence 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/
AN12946A 25 sdf00044aeb ? technical data (continued) 5. p d ? t a diagram 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/
AN12946A 26 sdf00044aeb ? usage notes 1. this ic is intended to be used for general electronic equipment [note book pc]. consult our sales staff in advance for information on the following applications: x special applications in which exceptional quality and reliability are required, or if the failure or malfunction of this ic may directly jeopardize life or harm the human body. x any applications other than the standard applications intended. (1) space appliance (such as artificial satellite, and rocket) (2) traffic control equipment (such as for automobile, airplane, train, and ship) (3) medical equipment for life support (4) submarine transponder (5) control equipment for power plant (6) disaster prevention and security device (7) weapon (8) others : applications of which reliability equivalent to (1) to (7) is required 2. pay attention to the direction of lsi. when mounting it in the wrong direction onto the pcb (printed-circuit-board), it might smoke or ignite. 3. pay attention in the pcb (printed-circuit-board) pattern layout in order to prevent damage due to short circuit between pins. in addition, refer to the ? pin description for the pin configuration. 4. perform a visual inspection on the pcb before applying power, otherwise damage might happen due to problems such as a solder- bridge between the pins of the semiconductor device. also, perform a full technical verification on the assembly quality, becau se the same damage possibly can happen due to conductive substances, such as solder ball, that adhere to the lsi during transportation. 5. take notice in the use of this product that it might break or occasionally smoke when an abnormal state occurs such as output pin- v cc short (power supply fault), output pin-gnd short (ground fault), or output-to-output-pin short (load short) . and, safety measures such as an installation of fuses are recommended because the extent of the above-mentioned damage and smoke emission will depend on the current capability of the power supply. 6. when using the lsi for new models, verify the safety including the long-term reliability for each product. 7. when the application system is designed by using this lsi, be sure to confirm notes in this book. be sure to read the notes to descriptions and the usage notes in the book. 8. please carry out the thermal design with sufficient margin such that the power dissipation will not be exceeded, based on the conditions of power supply, load and surrounding temperature. although indicated also in the column of the maximum rating, the maximum rating becomes an instant and the marginal value which must not exceed. it sufficiently evaluates, and i use-wish-do so that it may not exceed certainly. moreover, don't impress neither voltage nor current to pin which is not indicated. it may be spoilt in both cases. 9. note of soldering for heat dissipation package back please solder to gnd for heat 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/
request for your special attention and precautions in using the technical information and semiconductors described in this book (1) if any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and regulations of the exporting country, especially, those with regard to security export control, must be observed. (2) the technical information described in this book is intended only to show the main characteristics and application circuit examples of the products, and no license is granted under any intellectual property right or other right owned by our company or any other company. therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any other company which may arise as a result of the use of technical information described in this book. (3) the products described in this book are intended to be used for standard applications or general electronic equipment (such as office equipment, communications equipment, measuring instruments and household appliances). consult our sales staff in advance for information on the following applications: ? special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the prod- ucts may directly jeopardize life or harm the human body. ? any applications other than the standard applications intended. (4) the products and product specifications described in this book are subject to change without notice for modification and/or im- provement. at the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date product standards in advance to make sure that the latest specifications satisfy your requirements. (5) when designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions (operating power supply voltage and operating environment etc.). especially, please be careful not to exceed the range of absolute maximum rating on the transient state, such as power-on, power-off and mode-switching. otherwise, we will not be liable for any defect which may arise later in your equipment. even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure mode, possible to occur to semiconductor products. measures on the systems such as redundant design, arresting the spread of fire or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products. (6) comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (esd, eos, thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. when using products for which damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages. (7) this book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of matsushita electric industrial co., ltd. 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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