MM1381 데이터 시트보기 (PDF) - Mitsumi

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MM1381

RGB Video Amplifier with OSD Input

Mitsumi 

MITSUMI

RGB Video Amplifier with OSD Input MM1381, 1382, 1383

Pin Description

Pin no.

1

2

3

Pin name

R OSD IN

G OSD IN

B OSD IN

Internal equivalent circuit diagram

Pin Description

These inputs accept standard TTL input. Each

color is either completely ON (logic high) or

completely OFF (logic low). Connect unused

pins to ground with a 47kΩ resistor.

4

VIDEO/OSD

SWITCH

This input accepts standard TTL input.

H : OSD, L : VIDEO

Connect OSD to ground with a 47kΩ resistor

when not in use.

5

R VIDEO IN

8

G VIDEO IN

11

B VIDEO IN

6

VCC1

9

7

GND

10

21

12

VREF

13 VIDEO CONTRAST

14 OSD CONTRAST

26

B DRIVE

27

G DRIVE

28

R DRIVE

Video inputs.

These inputs must be AC coupled using a

capacitor of at least 1µF. The ideal capacitance

is 10 (F. DC playback is done with these

inputs. Also, serial resistor of approximately

33Ω must be used.

Power supply pin (except for output stage).

GND pins.

The GND pins are all connected internally, and

must be connected on the board as well.

Used for internal reference additional filter

capacitor. Voltage of this pin is 2.0V.

Contrast control pin :

4V no attenuation

0V attenuation over 60dB

Drive control pin :

4V no attenuation

0V 12dB attenuation

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