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.

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!Applications

Component stereo systems, radio cassette players, car stereo systems, televisions, VCRs, and active speakers.

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!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.

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!Block diagram

BA3880AS

1

2

3

4

5

6

7

8

9

10

11

MIXL

VCAL

DEFL

DETL

GND

DETR

DEFR

CTL

VCAR

MIXR

22

21

20

19

18

17

16

15

14

13

12

OUTL

INL

APFL

HPFL

LPFL

BIASC

LPFR

HPFR

APFR

INR

OUTR

+

+

CTL

+

+

VCA

−

+

+

+

HI

MID

LO

+

LPF

HPF

CTL

LPF

HPF

HI

MID

LO

VCA

BA3880AFS

1

2

3

4

5

6

7

8

9

10

11

MIXL

VCAL

DEFR

DETL

GND

DETR

DEFR

CTL

VCAR

MIXR

22

21

20

19

18

17

16

15

14

13

12

OUTL

INL

APFL

HPFL

LPFL

BIASC

LPFR

HPFR

APFR

INR

OUTR

+

+

−

+

+

+

+

+

HI

MID

LO

24

23

LPF

CTL

VCA

+

CTL

VCA

HI

MID

LO

HPF

LPF

HPF