BA7780KV Datasheet, PDF (3/10 Pages) Rohm – Stereo zoom microphone amplifier for camcorders

Video ICs
•^{Pin descriptions}
Pin No.
1
2
3
4
5
Pin name
RIPL
SUB IN R
INT IN R
VREG R
EXT IN R
6
MODE 6
7
PRE OUT R
8
OUT AMP IN R
9
INV OUT R
10
GC OUT R
11
MTX IN R
12
MTX OUT R
13
BL OUT R
14
HPF IN R
15
BIAS R
16
EXTC R
17
OUT R
18
BIAS SUB
19
HPF CONT
20
IN MONI
21
Z BC
22
Z AC
23
VCC
24
EX VCC
25
EX VCC OUT
26
GAIN CONT
27
Z POINT
28
Z SENSE
29
ZA
30
ZB
31
MIC MONO
32
OUT L
33
EXTC L
34
BIAS L
35
HPF IN L
36
BL OUT L
37
MTX OUT L
38
MTX IN L
39
GC OUT L
40
INV OUT L
41
OUT AMP IN L
42
PRE OUT L
Function
For bias ripple filter capacitor
Sub microphone input
Internal microphone input
Regulator output
External microphone input
Mode control 6 input
Preamplifier output
Out amplifier input
Inverter output
Gain control amplifier output
Matrix amplifier input
Matrix amplifier output
Zoom balance circuit output
HPF input
Bias output
For connection of out amplifier output inhibit capacitor
Signal output
Sub bias output
HFP control input
Input switch decision signal output
For connection of noise cutting capacitor for zoom control signal
For connection of noise cutting capacitor for zoom control signal
VCC
Current limiter VCC
Current limiter output
Gain control amplifier switch input
Cross-point variation input for zoom balance circuit
Sensitivity variation input for zoom balance circuit
Zoom control input
Zoom control input
External microphone monaural decision signal output
Signal output
For connection of out amplifier output inhibit capacitor
Bias output
HPF input
Zoom balance circuit output
Matrix amplifier output
Matrix amplifier input
Gain control amplifier output
Inverter output
Out amplifier input
Preamplifier output
BA7780KV
Pin voltage (V)
1.65
1.65
1.65
2.5
1.65
—
1.65
1.65
1.65
1.65
1.65
1.65
1.65
1.65
1.65
2.3
1.65
1.65
—
—
—
—
3.3
4.75
4.5
—
—
—
—
—
—
1.65
2.3
1.65
1.65
1.65
1.65
1.65
1.65
1.65
1.65
1.65
Format
50kΩ
100kΩ
75kΩ
C
75kΩ
25kΩ
EF (P - P)
100kΩ
EF (P - P)
EF (P - P)
B
EF (P - P)
EF (P - P)
100kΩ
EF (P - P)
C
C (P - P)
EF (P - P)
10kΩ
C
B
B
—
—
C
50kΩ
B
B
B
B
C
EF (P - P)
C
EF (P - P)
100kΩ
EF (P - P)
EF (P - P)
B
EF (P - P)
EF (P - P)
100kΩ
EF (P - P)
3