1/4 rev. b structure silicon monolithic integrated circuit product name audio interface + video driver + back up + rtc lsi type BU76292AGUW applications dsc, etc functions audio part ? monaural ? 16 bit ? codec ? monaural microphone amplifier with alc function ? monaural line amplifier ? btl output speaker amplifier (300mw@8 , thd+n=10%, vdd=3.0v) ? 64-step electronic volume with alc function ? pll built-in reference clock 12mhz 24mhz 27mhz 16fs 32fs 64fs (sampling rate 8khz 48khz) (master clock output) ? four-line serial interface power on reset function ? audio if format msb first, 2?s compliment ? 16bit word lengths left justified, i 2 s dac 16bit word lengths left, right justified, i 2 s video part ? sync-tip-clamp, lpf, 6db amplifier ? output coupling condenser unnecessary back up part ?ldo 1ch voltage detect circuit 2ch built-in rtc part ? 32bit counter built-in ? 64bit back up register built-in absolute maximum ratings ? parameter symbol limits unit comment supply voltage vdd -0.3 4.5 avdd spvdd vvdd dvdd lvdd supply voltage lvdd -0.3 2.5 v lvdd unreg supply voltage vcc -0.3 7.0 v unreg batt supply voltage batt -0.3 4.5 v batt input voltage vin -0.3 supply voltage+0.3 keep each limits upon storage temperature range tstg -50 125 operating temperature range tope -20 85 power dissipation pd 800 1 in the case of use at ta=25 or more, 8mw should be reduced per 1 . radiation resistance design is not arranged. operating conditions ? parameter symbol limits unit comment supply voltage vdd 2.7 3.3 avdd spvdd vvdd dvdd lvdd supply voltage lvdd 1.62 1.98 v lvdd unreg supply voltage vcc 2.65 5.5 v unreg batt supply voltage batt 2.0 3.3 v batt note avdd dvdd spvdd are not needed to be same voltage. note please do not set spvdd lower than avdd-0.3v. note please do not surpass package permissible loss, when spvdd is set.
2/4 rev. b electrical characteristics audio interface + video driver unless specified, ta=25 avdd=spvdd=dvdd=vvdd= 3.0v lvdd= 1.8v batt=3.1v unreg=4.5v b.w.=22hz 22khz fs=48khz fin=1khz oscin=32.768khz parameter symbol limits unit condition min. typ. max. < current consumption > # master=0 power-down mode idds - 0.02 0.1 pdb=l rec mode/pll mode iddr - 5.8 16 #pwap=mdrec=mdpll=1, mclk=24mhz play mode/pll mode iddp - 5.3 16 #pwap=mdpb=mdsp=mdpll=1, mclk=24mhz video mode iddv - 8.2 18 #pwap=pwvd=1,mdpll=0 < > output voltage voreg 0.75av dd-0.2 0.75avdd 0.75avdd+0.2 2.2k ??r #alc1=off, mgain=48db input impedance zin 70 100 130 k input level vin -53 -51 -49 dbv dout=0dbfs distortion thd+n 43 58 - db dout=-6dbfs@1khz snr 59 65 - db b.w.=jis-a ? output level doalc - -7.0 - dbfs alc1=on #lgain=+5db output level vo -6.5 -5.0 -3.5 dbv din=-6dbfs distortion thd+n 70 80 - db din=-6dbfs@1khz snr 81 89 - db b.w.=jis-a #alc2=off, evr=-6db, rl=8 output level vo 0.1 2.1 4.1 dbv din=0dbfs distortion thd+n 50 60 - db din=0dbfs@1khz snr 75 82 - db b.w.=jis-a ? output level voalc 0.1 2.1 4.1 dbv alc2=on, evr=8db |
