MAX9513 데이터 시트보기 (PDF) - Maxim Integrated

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MAX9513

CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support

Maxim Integrated 

CVBS Video Filter Amplifier with SmartSleep

and Bidirectional Video Support

Internal Mode Versus External Mode

Internal Mode

Set the INT/EXT control input low for internal mode. The

MAX9513 processes video signals from an internal

source such as a DVD chip (Figure 7). The 2:1 multi-

plexer selects the video signal on CVBSIN. The

EXTCVBSIN video signal is ignored.

External Mode

Set the INT/EXT control input high for external mode.

The 2:1 multiplexer selects the video signal on

EXTCVBSIN (Figure 8). The CVBSIN signal is ignored.

The block drawing of the MAX9513 in Figure 8 shows

which circuits are off while in external mode.

SmartSleep does not function in external mode, and the

SMARTSLEEP input is ignored.

DVD CHIP

LOGIC-

LOW

INT/EXT

MICROCONTROLLER

SMARTSLEEP

+3.3V

SHDN

CURRENT

DAC

CVBSIN

EXTCVBSIN

0.1μF

+3.3V

11.6mA PLUS

LOAD CURRENT

VDD

CONTROL

LOGIC

ACTIVE VIDEO

DETECT

BUFFER

LPF

CLAMP

OFF

GND

0.1μF

MAX9513

LOAD SENSE

6dB

CVBSOUT1 75Ω

LOAD SENSE

6dB

CVBSOUT2 75Ω

CVBS1

Y/C SEPARATION

Figure 7. Internal Mode Operation for Portable DVD Application

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