BA7780 データシートの表示（PDF） - ROHM Semiconductor

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BA7780

Stereo zoom microphone amplifier for camcorders

ROHM Semiconductor 

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

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