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BA7781 データシート(PDF) 3 Page - Rohm

部品番号 BA7781
部品情報  Stereo microphone amplifier for camcorders
Download  7 Pages
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メーカー  ROHM [Rohm]
ホームページ  http://www.rohm.com
Logo ROHM - Rohm

BA7781 データシート(HTML) 3 Page - Rohm

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3
Video ICs
BA7781K
1
MODE 1
25k
2
PRE OUT R
1.65
3
INV IN R
1.65
100k
4
INV OUT R
1.65
5
MTX IN R
1.65
B
6
MTX OUT R
1.65
7
HPF IN R
1.65
100k
8
OUT R
1.65
9
MIC MONO
C
10
MIX OUT
1.65
11
LPF INV IN
B
12
LPF INV OUT
13
VCC
3.3
14
BIAS
1.65
15
DET IN
1.65
2k
16
DET OUT
22k
17
OUT L
1.65
18
HPF IN L
1.65
100k
19
MTX OUT L
1.65
20
MTX IN L
1.65
B
21
INV OUT L
1.65
22
INV IN L
1.65
100k
23
PRE OUT L
1.65
24
MODE 24
25k
25
EXT IN L
1.65
75k
26
BG
1.25
10k
27
INT IN L
1.65
75k
28
GND
——
29
VREG
2.5
C
30
INT IN R
1.65
75k
31
RIPL
1.65
50k
32
EXT IN R
1.65
75k
EF (P - P)
EF (P - P)
EF (P - P)
C (P - P)
EF (P - P)
EF (P - P)
EF (P - P)
C (P - P)
EF (P - P)
EF (P - P)
EF (P - P)
Pin name
Function
Pin No.
Voltage (V)
EF: emitter follower, P-P: push pull, B: base, and C: collector.
Circuit
Mode control 1 input
Preamplifier output
Inverter input
Inverter output
Matrix amplifier input
Matrix amplifier output
High-pass filter input
Signal output
External microphone monaural decision signal output
Mix Output
Low-pass filter block inverter input
Low-pass filter block inverter output
VCC
Bias voltage
Detector circuit input
Detector circuit output
Signal output
High-pass filter input
Matrix amplifier output
Matrix amplifier input
Inverter output
Inverter input
Preamplifier output
Mode control 24 input
External microphone input
For regulator ripple filter capacitor
Internal microphone input
GND
Regulator output
Internal microphone input
For bias ripple filter capacitor
External microphone input
All numerical values are standardized values.
Pin descriptions


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