MAX11500USA+T Maxim Integrated Products, MAX11500USA+T Datasheet - Page 4

• Manufacturer Part Number: MAX11500USA+T
• Description: IC HD VIDEO FILTER 3CH 8-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Video Filterr

Specifications of MAX11500USA+T

• Applications: DVD, HD, Set-Top Boxes, Recorders
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Three-Channel, High-Definition Video Filter
The MAX11500 integrates three high-definition (HD)
video filters, each with a transparent input clamp, a 6th-
order lowpass filter with a -3dB bandwidth of 33MHz,
and an output stage with a gain of 2V/V. The output sig-
nal is offset by typically 550mV to optimize driver per-
formance.
Figure 1. Typical AC-Coupled Signal
4
4
PIN
_______________________________________________________________________________________
_______________________________________________________________________________________
1
2
3
4
5
6
7
8
1.0V
0.3V
0.0V
NAME
OUT3
OUT2
OUT1
GND
V
IN1
IN2
IN3
CC
V
OUT
Video Input Channel 1
Video Input Channel 2
Video Input Channel 3
Power Supply. Bypass to GND with 0.1µF
and 1µF capacitors.
Ground
Video Output Channel 3
Video Output Channel 2
Video Output Channel 1
= 2 x V
Detailed Description
INPUT SIGNAL
IN
Pin Description
+ 0.55V
FUNCTION
IN_
MAX11500
Typical voltage waveforms are shown in Figures 1 and 2.
All inputs feature a transparent clamp that allows either
AC- or DC-coupling of the inputs. The clamp remains
inactive while the input signal is above ground, offering
true DC input coupling. If the signal goes below
ground, as is the case if it is AC-coupled, the clamp
sets the sync tip close to the ground level.
The choice to AC- or DC-couple the input depends on
the video source. Many DACs have a current output
and are terminated to ground with a resistor; such sig-
nals can be conveniently DC-coupled. In cases where
the DC level of the video signal is unknown or outside
of the specified input range of the MAX11500, such sig-
nals require AC-coupling. Examples of the latter are
SCART inputs and DACs terminated to V
If the input is DC-coupled, the voltage must remain
above zero but not exceed the maximum input voltage
of 1.7V (typical).
OUT_
2.55V
1.15V
0.55V
Transparent Clamps
OUTPUT SIGNAL
DC-Coupled Inputs
Input Coupling
CC
.