ADVANCED
www.fairchildsemi.com
FMS6418
Triple Video Driver with Selectable HD/SD
Video Filters for RGB or YUV Signals
Features
•
•
•
•
•
•
•
•
Three video anti-aliasing or reconstruction filters
YUV / RGB signal support
2:1 Mux inputs for multiple RGB/YUV inputs
Selectable 8MHz or 30MHz 6th order filters
for SD/HD applications
Inputs are DC coupled
All outputs can drive AC coupled 75Ω loads and
provide 6dB of gain
1% differential gain with 1° differential phase
36dB/octave roll-off on all channels
Description
The FMS6418 offers comprehensive filtering for set top box
or DVD applications. This part consists of a triple 6th order
filter with selectable 30MHz or 8.0MHz frequencies.
A 2-to-1 multiplexer is provided on each filter channel. The
triple filters are intended for either YUV or RGB signals. All
channels accept DC coupled ground-referenced 1V
pp
signals.
The filters output 2V
pp
signals into AC coupled terminated
loads. The low-pass filters are powered by 3.3V and the
outputs by 5.0V.
Applications
•
•
•
•
•
•
Cable Set top boxes
Satellite Set top boxes
DVD players
HDTV
Personal Video Recorders (PVR)
Video On Demand (VOD)
Functional Block Diagram
INMUX
Filter Select (HD/SD)
RinA (VinA)
6dB
Rout (Vout)
RinB (VinB)
GinA (YinA)
6dB
Gout (Yout)
GinB (YinB)
BinA (UinA)
6dB
Bout (Uout)
BinB (UinB)
Advanced January 2003
DATA SHEET
FMS6418
General Description
The FMS6418 offers comprehensive filtering for set top box
or DVD applications. This part consists of a triple 6th order
filter with selectable 30MHz to 8.0MHz frequencies. A 2-to-1
multiplexer is provided on each filter. The filters are intended
for either YUV or RGB signals. All channels accept DC cou-
pled ground-referenced 1V
pp
signals. The filters output 2V
pp
signals into AC coupled terminated loads. All channels pro-
vide 6dB gain, accept 1V ground referenced inputs, and drive
AC coupled loads. The RGB low-pass filters are powered by
3.3V and the output buffers are powered by 5.0V.
The FMS6418 is a next generation filter solution from
Fairchild Semiconductor addressing the expanding filtering
needs for set top boxes, and DVD players. The product
provides selectable filtering with cutoff frequencies of
30MHz or 8.0MHz on the RGB/YUV channels. Thus, the
FMS6418 addresses the requirement for a single set top box
to be compatible with a variety of resolution standards.
Multiplexers on the RGB channels provide further flexibility.
For DVD, Set-top Box, and TV applications, the product
provides filtering and output drive amplification for 3
channels of outputs (RGB/YUV).
Pin Configuration
IN
MUX
R
INA
R
INB
G
INA
G
INB
B
INA
B
INB
NC
1
2
3
4
5
6
7
8
FMS6418M16
16-pin SOIC
16 F
SEL
15 V
SSA
14 V
SSA
13 R
OUT
12 G
OUT
11 B
OUT
10 V
CCO
9
V
CCA
Pin Assignments
Pin #
1
Pin Name
IN
MUX
Pin Voltage
Equivalent Circuit
Description
Logic input selects between channel <A> or
<B> of the RGB inputs.
(1): RGB A input, (0): RGB B input
2
R
INA
Analog RED video input for Channel <A>
2
Advanced January 2003
FMS6418
DATA SHEET
Pin Assignments
(Continued)
Pin #
3
Pin Name
R
INB
Pin Voltage
Equivalent Circuit
Description
Analog RED video input for Channel <B>
4
G
INA
Analog GREEN video input for Channel <A>
5
G
INB
Analog GREEN video input for Channel <B>
6
B
INA
Analog BLUE video input for Channel <A>
Advanced January 2003
3
DATA SHEET
FMS6418
Pin Assignments
(Continued)
Pin #
7
Pin Name
B
INB
Pin Voltage
Equivalent Circuit
Description
Analog BLUE video input for Channel <B>
8
9
10
11
NC
V
CCA
V
CCO
B
OUT
–
–
No Connect (float pin)
+3.3V power supply for filters
+5V power supply for output buffers
Filtered Analog BLUE video output from
either B
INA
or B
INB
12
G
OUT
Filtered Analog GREEN video output from
either G
INA
or G
INB
13
R
OUT
Filtered Analog RED video output from
either R
INA
or R
INB
14
15
V
SSO
V
SSA
Ground for output buffers
Ground for filters
4
Advanced January 2003
FMS6418
DATA SHEET
Pin Assignments
(Continued)
Pin #
16
Pin Name
F
SEL
Pin Voltage
Equivalent Circuit
Description
Logic Input selects between (0) SD
(8.0MHz) and (1) HD (30.0MHz) filters
Absolute Maximum Ratings
Parameter
DC Supply Voltage
Analog and Digital I/O
Output Current (continuous)
RGB Channels
Junction Temperature
Storage Temperature Range
Lead Temperature (soldering, 10s)
Thermal Resistance (Θ
JA
)
(beyond which damage may occur)
Min.
Max.
7.0
Unit
V
V
mA
°C
°C
°C
°C/W
Recommended Operating Conditions
Parameter
Operating Temperature Range
V
CCO
Range
V
CCA
Range
Min.
0
4.75
3.135
Typ.
5.0
3.3
Max.
70
5.25
3.465
Unit
°C
V
V
Advanced January 2003
5
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