AD8142ACPZ-RL(Rev0) View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

AD8142ACPZ-RL
(Rev.:Rev0)

Low Cost, Triple Differential Drivers for Wideband Video

Analog Devices 

AD8141/AD8142

APPLICATIONS INFORMATION

DRIVING RGB VIDEO OVER CAT-5 CABLE

The AD8141 and AD8142 are devices whose foremost application

is driving RGB and component video signals over unshielded

twisted pair (UTP) cable in video distribution networks. Single-

ended video signals are easily converted to differential signals

for transmission over the cable, and the internally fixed gain of 2

automatically compensates for the losses incurred by the source

and load terminations. Figure 42 shows the AD8141/AD8142 in

a triple, single-ended-to-differential application when driven from

a 75 Ω video source.

+5V

VS–

AD8141/AD8142

2kΩ

0.1µF ON ALL VS+

PINS

75Ω

RED

VIDEO

SOURCE

80.6Ω

38.3Ω

1kΩ

+

1kΩ

R

–

2kΩ

49.9Ω

49.9Ω

RED UTP

2kΩ

75Ω

GREEN

VIDEO

SOURCE

80.6Ω

38.3Ω

1kΩ

+

1kΩ

G

–

2kΩ

49.9Ω

49.9Ω

GREEN UTP

75Ω

BLUE

VIDEO

SOURCE

80.6Ω

38.3Ω

2kΩ

1kΩ

+

1kΩ

B

–

2kΩ

49.9Ω

49.9Ω

BLUE UTP

DISABLE

DIS

VS–

Figure 42. AD8141/AD8142 in Single-Ended-to-Differential Application on Single 5 V Supply (Sync Pulse Encoding Not Shown)

Rev. 0 | Page 18 of 24

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