Detailed Description

Each channel of the MAX11504/MAX11505 contains a

an output amplifier with +6dB gain (see the

Functional

lowpass filters provide a bandwidth of 8.6MHz (typical).

The MAX11504 provides a flat passband response. The

MAX11505 features a 0.8dB high-frequency boost on

Channel 1 to help with system rolloff (for CVBS signals)

and a flat passband response on all other channels.

Within the passband, each channel amplifies the signal

by two and adds 280mV of offset.

Typical voltage levels are shown in Figures 1 and 2.

VV

V

OUT

IN

=×

+

()

.

20 28

Four-Channel, Standard-Definition

Video Filter

_______________________________________________________________________________________

5

Pin Description

PIN

NAME

FUNCTION

1

IN1

Video Input Channel 1. The MAX11505 provides 0.8dB passband boost at high frequency.

2

IN2

Video Input Channel 2

3

IN3

Video Input Channel 3

4

IN4

Video Input Channel 4

Power Supply. Bypass to ground with 0.1µF and 1µF capacitors.

6

GND

Ground

7

OUT4

Video Output Channel 4

8

OUT3

Video Output Channel 3

9

OUT2

Video Output Channel 2

10

OUT1

Video Output Channel 1. The MAX11505 provides 0.8dB passband boost at high frequency.

INPUT SIGNAL

0.30V

1.00V

0V

OUTPUT SIGNAL

0.88V

2.28V

0.28V

IN_

OUT_

MAX11504

MAX11505

Figure 1. Typical AC-Coupled Signal