GL3820

1

GL3820

Description

This

integrated

circuit

provides

all

video

switching allowing connections between the peri

TV plug and video sections in the TV set.

Pin configuration

Features

•

•

•

Video Cross Talk : 50 dB Typical

•

Short Circuit Protection of Inputs and Outputs

•

Clamped Video Inputs

Maximum Ratings

RATING

SYMBOL

VALUE

UNIT

Supply Voltage

18

V

Operating Temperature

with Load > 150

Ω

with Load = 75

Ω

-10 to + 100

-10 to + 70

¡ É

Junction Temperature

-40 to + 150

¡ É

Storage Temperature

-40 to + 150

¡ É

600

75

Ω

Ω

Typical Application and Test Circuit

Note : We advice to protect the 75

Ω output through a 75Ω resistor for supply voltage upper than 9 V.

1

2

3

4

5

6

7

8

GL6850

GND

75

Ω

VIDEO OUTPUT

INTERNAL

VIDEO INPUT

NC

EXTERNAL

SWITCHED

VIDEO OUTPUT

SWITCHING

INPUT

External

Video

Input

Video

Coming

from

TV

75

Ω

75

Ω

Video

600

Ω

Switching Input

. 0 or no connected = Video TV

. > 7V = external video

10k

Ω

Ref.

(low

impedance)

8

3

7

6

2

1

5

G = 2

G = 1

2mA