BA3880AS

BA3880AS / BA3880AFS Audio ICs High-definition sound processor BA3880AS / BA3880AFS The BA3880AS and BA3880AFS are sound processor ICs that perform phase and harmonic compensation on audio signals to accurately reproduce the "rise" section of audio signals that determines the characteristics of the sound, and thus reproduce the original recording as naturally as possible. !Applications Component stereo systems, radio cassette players, car stereo systems, televisions, VCRs, and active speakers. !Features 1) Correct distortion in the rising section of audio signals that results from miss-matched speakers and amplifiers, and reproduces the original sound faithfully. 2) To allow application with all types of speakers and sources, the clarity can be adjusted using DC control. 3) DC control provided for selection of either processor mode or bypass mode. 4) Bass boost fixed internally to 4dB. !Block diagram BA3880AS BA3880AFS MIXL 1 VCAL 2 + + + + + HI MID + + + − VCA 22 OUTL GND 1 CTL 24 DETL LO 21 INL DETR 2 CTL 23 VCC 3 HPF 20 APFL DEFR 3 VCA − LO + + HI MID + + + + + + VCA 22 DEFR DEFL 4 CTL LPF 19 HPFL CTL 4 21 VCC DETL 5 18 LPFL VCAR 5 20 VCAL GND 6 17 BIASC MIXR 6 19 MIXL DETR 7 CTL LPF 16 LPFR OUTR 7 18 OUTL DEFR 8 HPF VCA − + + + HI + MID + + + + LO 15 HPFR INR 8 + + + + + HI MID LO + + + − LPF 17 INL CTL 9 14 APFR APFR 9 HPF 16 VCAR 10 13 INR HPFR 10 15 APFL MIXR 11 12 OUTR LPFR 11 LP...