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BA3880AS Datasheet

  • BA3880AS

  • High-definition sound processor

  • 9頁

  • ROHM

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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
+
+
+
鈭?/div>
VCA
22
OUTL
GND
1
CTL
24
DETL
LO
21
INL
DETR
2
CTL
23
V
CC
3
HPF
20
APFL
DEFR
3
VCA
鈭?/div>
LO
+ +
HI MID
+
+
+
+
+
+
VCA
22
DEFR
DEFL
4
CTL
LPF
19
HPFL
CTL
4
21
V
CC
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
鈭?/div>
+ +
15
HPFR
INR
8
+
MID
LO
+
+
+
+
17
INL
CTL
9
14
+
MID
+
APFR
APFR
9
HPF
HI
16
MIXR
11
+
+ +
+
VCAR
10
HI
LO
13
INR
HPFR
10
LPF
12
OUTR
LPFR
11
LPF
BIASC
12
鈭?/div>
+
+ +
15
APFL
HPF
14
HPFL
13
LPFL

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