ba3880afs ROHM Co. Ltd., ba3880afs Datasheet
ba3880afs
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ba3880afs Summary of contents
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... 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. ...
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... bypass mode (through operations). CTL When V = 4.5V, the processor mode (enhance operations) with minimum definition level. CTL When V = 0V, the processor mode (enhance operations) with maximum definition level. CTL BA3880AS / BA3880AFS Limits Unit 11 V ∗ 1000 mW −40~+85 ° ...
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... V CC 0.1µ 47µ DEFL 1µ 5 DETL 4.7µ 6 GND 7 DETR 4.7µ 8 DEFR 1µ 9 CTL 10 VCAR 470p 9V 4.5V 11 MIXR 6800p BA3880AS / BA3880AFS OUTL 22 INL 21 APFL 20 0.01µ HPFL 19 LPFL 18 0.068µ BA3880AS BIASC 17 0.068µ LPFR 16 HPFR 15 0.01µ APFR 14 INR 13 OUTR 12 Fig.1 4.7µ ...
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... VCAR 6800p 9V 4.5V 6 MIXR 470p OUTR 7 4.7µ V THD V 8 INR 100k APFR 9 4.7µ 0.01µ 10 HPFR 600 LPFR 11 0.068µ 12 BIASC 47µ BA3880AS / BA3880AFS 24 DETL 4.7µ 23 1µ DEFL 22 0.1µ VCAL 6800p BA3880AFS 19 MIXL 470p 18 OUTL 17 INL 16 APFL 15 0.01µ HPFL 14 ...
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... Audio ICs Circuit operation The BA3880AS and BA3880AFS high-definition sound processor system ICs treat the amplifiers and speakers as a total audio systems, and perform signal processing at the amplifier input stage to accurately reproduce the rise sections of audio signals that determine the characteristics of sound, and ensure that the replayed audio is as close to the original sound and as natural sounding as possible ...
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... Control table Item Threshold level V CC Recommended setting range for bypass mode 0.64 × CTL 0.57 × Recommended setting range for processor mode 0V (GND) BA3880AS / BA3880AFS C1 C2 SMALL LARGE SMALL DEFINITION LEVEL FREQUENCY Mode setting 0.75 × 0.5 × C1: External capacitor ...
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... 0.1µ DEFL 47µ GND 4 1µ CTL DETL 5 4.7µ GND 6 DETR 7 4.7µ CTL DEFR 8 1µ CTL V CTL 9 VCAR 10 68000p MIXR 11 470p BA3880AS / BA3880AFS + + + + + HI MID − VCA HPF LPF LPF HPF VCA − MID Fig.3 L−ch OUTL OUTPUT 22 4.7µ ...
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... CTL V CTL 4 VCAR 5 6800p MIXR 6 470p OUTR R−ch OUTPUT 7 4.7µ R−ch INR INPUT 8 4.7µ APFR 9 0.01µ HPF HPFR 10 LPF LPFR 11 0.068µ BIASC 12 47µ BA3880AS / BA3880AFS VCA VCA LO + − MID + + + + + + + + + + HI MID − LPF Fig.4 DETL 24 4.7µ CTL 23 DEFR 1µ ...
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... CONTROL VOLTAGE : V CTL Fig. 3 Definition level vs. control voltage External dimensions (Units : mm) BA3880AS 19.4±0 7. 1.778 0.5±0.1 0°~15° SDIP22 BA3880AS / BA3880AFS . Appropriate switching may not 10kHz CTL −10 −20 −30 −40 −50 −60 − ...