MAX7432EUD(2002) 查看數據表（PDF） - Maxim Integrated

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MAX7432EUD
(Rev.:2002)

Standard Definition Video Reconstruction Filters and Buffers

Maxim Integrated 

Standard Definition Video Reconstruction

Filters and Buffers

Y (LUMA)

MAX7430

IN1A [CLEVEL = 0] OUT1

C (CHROMA)

IN2A [CLEVEL = 1] OUT2

Figure 10. MAX7430 Y/C Video Filter Application

Y (LUMA)

INA

OUT

SYNCIO

(CLEVEL = 0)

MAX7248

C (CHROMA)

INA

OUT

SYNCIO

(CLEVEL = 1)

MAX7248

Figure 11. Y/C Video Filter Application

Y (LUMA)

(INCLUDES

SYNC SIGNAL)

Pb

MAX7432

IN1A [CLEVEL = 0] OUT1

IN2A [CLEVEL = 1] OUT2

G

(MUST CONTAIN

SYNC SIGNAL)

R

MAX7432

IN1A [CLEVEL = 0] OUT1

IN2A [CLEVEL = 0] OUT2

Pr

IN3A [CLEVEL = 1] OUT2

B

IN3A [CLEVEL = 0] OUT3

Figure 12. MAX7432 Y Pb Pr Video Filter Application

Set the clamping levels for component video so the

MAX7428 processing Y clamps at +1V (CLEVEL = 0).

The remaining two MAX7428s should have clamp levels

set to +1.5V (CLEVEL = 1). For RGB video with external

sync (H), all three MAX7428s should have clamp levels

set to +1V (CLEVEL = 0).

Figure 13. MAX7432 RGB Video Filter with Embedded Sync

Application

Power-Supply Bypassing and Layout

The MAX7428/MAX7430/MAX7432 operate from a sin-

gle +5V supply. Bypass VCC to GND with a 0.1µF

capacitor. Place all external components as close to

the devices as possible. Refer to the MAX7428EVKIT

for a proven PC board layout example.

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