MAX11501 查看數據表（PDF） - Maxim Integrated

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MAX11501

Three-Channel, Standard-Definition Video Filters

Maxim Integrated 

Three-Channel,

Standard-Definition Video Filters

Pin Description

PIN

NAME

FUNCTION

1

IN1 Video Input Channel 1

2

IN2 Video Input Channel 2

3

IN3 Video Input Channel 3

4

VCC Power Supply

5

GND Ground

6

OUT3 Video Output Channel 3

7

OUT2 Video Output Channel 2

8

OUT1 Video Output Channel 1

Detailed Description

Each channel of the MAX11501/MAX11502 contains a

transparent input clamp, an 8.6MHz (MAX11501) or

8.9MHz (MAX11502), 5th-order lowpass filter and an

output amplifier with a gain of two (see the Typical

Operating Circuit). The MAX11501 provides a flat pass-

band response and the MAX11502 features a +0.8dB

high-frequency boost at 5MHz on all channels to help

with system roll-off. Within the passband, each channel

amplifies the signal by two and adds 280mV of offset.

VOUT = (2 x VIN) + 0.28V

Typical voltage levels are shown in Figures 1 and 2.

Inputs

Transparent Clamps

All inputs feature transparent clamps to allow either AC

or DC input coupling. The clamp remains inactive while

the input signal is above ground, offering true DC input

coupling. If the signal goes below ground, as when the

signal is AC-coupled, the internal clamp sets the sync

tip at slightly below the ground level.

2.28V

1.0V

INPUT SIGNAL

0.3V

0.0V

Figure 1. Typical AC-Coupled Signal

MAX11501

MAX11502

IN_

OUT_

0.88V

0.28V

OUTPUT SIGNAL

_______________________________________________________________________________________ 5

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