LT1675-1 データシートの表示（PDF） - Linear Technology

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LT1675-1

250MHz, Triple and Single RGB Multiplexer with Amplifiers

Linear Technology 

LT1675/LT1675-1

TYPICAL APPLICATIO S

RGB Video Inverter

RED

+1

97.6Ω

VIDEO IN GREEN

+1

97.6Ω

BLUE

+1

97.6Ω

332Ω

332Ω

+1

–

+

+1

332Ω

332Ω

–

+1

+

5V

10k

1.25V

LT1634

10k

0.714V

332Ω

332Ω

–

+

LT1399

LT1675

V+

75Ω CABLE

+2

VOUT RED

75Ω

75Ω CABLE

+2

VOUT GREEN

75Ω

75Ω CABLE

+2

VOUT BLUE

75Ω

V–

SELECT

ENABLE

COMPOSITE

BLANKING

1675 TA03

This circuit is useful for viewing photographic negatives

on video. A single channel can be used for composite or

monochrome video. The inverting amplifier stages are

only switched in during active video so the blanking, sync

and color burst (if present) are not disturbed. To prevent

video from swinging negative, a voltage offset equal to the

peak video signal is added to the inverted signal.

16751fb

12

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