FMS6414CSX Fairchild Semiconductor, FMS6414CSX Datasheet - Page 3

• Manufacturer Part Number: FMS6414CSX
• Description: IC DRVR VID 2CH W/FILTERS 8SOIC
• Manufacturer: Fairchild Semiconductor
• Type: Driverr

Specifications of FMS6414CSX

• Applications: Recorders, Set-Top Boxes
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: FMS6414CSXTR; FMS6414CSX_NL; FMS6414CSX_NLTR; FMS6414CSX_NLTR

FMS6414
Functional Description
Introduction
The FMS6414 is a monolithic continuous time video filter
designed for reconstructing the luminance, chrominance,
or composite video signals from D/A source. The chip is
intended for use in applications with AC coupled input and
AC coupled outputs. (See Figure 1) The reconstruction filters
approximate a 4th-order Butterworth characteristic with an
optimization toward low over-shoot and flat group delay.
The video outputs are each capable of driving 2VP-P into an
AC coupled 150 video load, with up to 35pF of load
capacitance at the output pin. The channel is clamped during
sync to establish the appropriate output voltage swing range.
Thus the input coupling capacitors do not behave according
to the conventional RC time constant. Clamping for all
channels settles to less than 10mv within 5ms of a change in
video input source. In most applications the input coupling
capacitors are 0.1µF. The input typically sinks 1µA during
active video, which nominally tilts a horizontal line by about
2mV at the Video output. During sync, the clamp typically
Typical Applications Diagram
REV. 1.0.1 6/27/02
YIN
CIN
0.1 F
0.1 F
1
2
3
4
CIN
YIN
NC (Reserved)
GND_VIDEO
gM
gM
REF, AND TIMING
FMS6414
SYNC STRIP,
1V
1V
Figure 1.
x2
x2
NC (Reserved)
VCC_VIDEO
sources 20µA to restore the DC level. The net result is that
the average input current is zero. Any change in the input
coupling capacitor’s value will inversely alter the amount of
tilt per line. Such a change will also linearly affect the clamp
response time. This product is robust and stable under all
stated load and input conditions. Capacitive bypassing VCC
directly to ground ensures this performance.
Video I/O
The video inputs are driven by either a low impedance
source of 1VP-P or the output of a 75 terminated line.
The input is required to be AC coupled via a 0.1µF coupling
capacitor which allows for a settling time of 5ms. The video
output is capable of driving an AC coupled 150 load at
2VP-P, or 1VP-P into a 75 load. Up to 35pF of load
capacitance (at the output pin) can be driven without stability
or slew issues. The output is AC coupled with a 220µF or
larger AC coupling capacitor.
COUT
YOUT
8
7
6
5
0.1 F
220 F
220 F
75
75
1 F
Video Cable
Video Cable
+5.0V
PRODUCT SPECIFICATION
75
75
YOUT
COUT
3