MAX11504 Datasheet, PDF (5/12 Pages) Maxim Integrated Products – Four-Channel, Standard-Definition Video Filter

Four-Channel, Standard-Definition
Video Filter
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
5
V_CC
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.
Detailed Description
Each channel of the MAX11504/MAX11505 contains a
transparent input clamp, a 5^th order lowpass filter, and
an output amplifier with +6dB gain (see the Functional
Diagrams and Typical Operating Circuits). The 5^th order
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.
V_OUT = (2 × V_IN) + 0.28V
Typical voltage levels are shown in Figures 1 and 2.
2.28V
1.00V
INPUT SIGNAL
0.30V
0V
Figure 1. Typical AC-Coupled Signal
MAX11504
MAX11505
IN_
OUT_
0.88V
0.28V
OUTPUT SIGNAL
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