FMS6408 — Triple Video Filter Driver for RGB and YUV Signals
October 2007
FMS6408
Precision Triple Video Filter Driver for RGB and YUV Signals
Features
7.6MHz 5th order RGB/YUV/YC CV
filters
50dB stopband attenuation at 27MHz on all outputs
Better than 0.5dB
flatness
to 4.2MHz on all outputs
No external frequency selection components or
clocks
AC coupled inputs and AC or DC coupled outputs
Supports both NTSC and PAL luminance
bandwidth
Continuous time, low-pass
filters
for video anti-
aliasing or reconstruction applications
<1% differential gain with 0.5° differential phase on
all channels
Integrated DC restore circuitry with low tilt
Description
The FMS6408 provides three video signal paths;
including a two-input MUX, a video
filter,
and a 6dB gain
output driver. The
filter
bandwidth supports RGB and
YUV signals in NTSC or PAL formats.
The video
filters
approximate a 5th-order Butterworth
low-pass characteristic optimized for minimum
overshoot and
flat
group delay to provide excellent
image quality. Four different peaking options are
available. The video
filters
can be bypassed if desired.
In a typical application, the RGB or YUV DAC outputs
are AC coupled into the
filters
through the input MUX.
All channels have DC restore circuitry to clamp the DC
input levels during video sync. The clamp pulse derived
from the selected Y input controls three independent
feedback clamps. All outputs are capable of driving
2V
pp
, AC or DC coupled, into either a single (150Ω) or
dual (75Ω) video load. The FMS6408 clamp levels can
be factory programmed for YUV / RGB (250mV for all
channels), YC / YPbPr (250mV on channel 1 and
1.125V on channels 2 and 3) or YC CV (250mV on
channels 1 and 3 and 1.125V on channel 2).
Applications
Cable Set-top Boxes
Satellite Set-top Boxes
Terrestrial Set-top Boxes
DVD Players
Personal Video Recorders (PVR)
Video-On-Demand (VOD)
Ordering Information
Part Number
FMS6408MTC141
FMS6408MTC141X
FMS6408MTC142
FMS6408MTC143
FMS6408MTC143X
Clamping
Mode
YPbPr/YC
YPbPr/YC
YPbPr/YC
YPbPr/YC
YPbPr/YC
Peaking
Mode
(dB)
0
0
0.4
0.9
0.9
Y
OUT
Level
(mV)
250
250
250
250
250
U
OUT
Level
(V)
1.125
1.125
1.125
1.125
1.125
Package
14-Lead, Thin Shrink Small Outline
Package (TSSOP)
14-Lead, Thin Shrink Small Outline
Package (TSSOP)
14-Lead, Thin Shrink Small Outline
Package (TSSOP)
14-Lead, Thin Shrink Small Outline
Package (TSSOP)
14-Lead, Thin Shrink Small Outline
Package (TSSOP)
Packing
Method
94 Units Tube
2500 Units
Tape and Reel
94 Units Tube
94 Units Tube
2500 Units
Tape and Reel
Continued on following page…
© 2004 Fairchild Semiconductor Corporation
FMS6408 Rev. 3.0.0
www.fairchildsemi.com
FMS6408 — Triple Video Filter Driver for RGB and YUV Signals
Ordering Information
(Continued)
Part Number
FMS6408MTC144
FMS6408MTC145
FMS6408MTC146
FMS6408MTC147
FMS6408MTC148
FMS6408MTC149
FMS6408MTC1410
FMS6408MTC1411
FMS6408MTC1412
Clamping
Mode
YPbPr/YC
YUV/RGB
YUV/RGB
YUV/RGB
YUV/RGB
YC/CV
YC/CV
YC/CV
YC/CV
Peaking
Mode
(dB)
1.3
0
0.4
0.9
1.3
0
0.4
0.9
1.3
Y
OUT
Level
(mV)
250
250
250
250
250
250
250
250
250
U
OUT
Level
(V)
1.125
250
250
250
250
1.125
1.125
1.125
1.125
Package
14-Lead, Thin Shrink Small Outline
Package (TSSOP)
14-Lead, Thin Shrink Small Outline
Package (TSSOP)
14-Lead, Thin Shrink Small Outline
Package (TSSOP)
14-Lead, Thin Shrink Small Outline
Package (TSSOP)
14-Lead, Thin Shrink Small Outline
Package (TSSOP)
14-Lead, Thin Shrink Small Outline
Package (TSSOP)
14-Lead, Thin Shrink Small Outline
Package (TSSOP)
14-Lead, Thin Shrink Small Outline
Package (TSSOP)
14-Lead, Thin Shrink Small Outline
Package (TSSOP)
Packing
Method
94 Units Tube
94 Units Tube
94 Units Tube
94 Units Tube
94 Units Tube
94 Units Tube
94 Units Tube
94 Units Tube
94 Units Tube
Notes:
1.
2.
All packages are Pb-free per JEDEC J-STD-020B standard.
Factory programming options allow a single die to be configured for multiple operating modes.
Block Diagram
IN
MUX
(A/B)
BYPASS (BYPASS/FILTER)
Y
INA
Y
INB
8MHz
*
6d
B
Y
OUT
gM
250mV
Sync Processing
U
INA
U
INB
8MHz
*
6d
B
U
OUT
gM
250mV or
1.125V *
V
INA
V
INB
8MHz
*
6d
B
V
OUT
gM
* Factory Selected Clamp
and Peaking Levels
250mV or
1.125V *
Figure 1. Block Diagram
© 2004 Fairchild Semiconductor Corporation
FMS6408 Rev. 3.0.0
www.fairchildsemi.com
2
FMS6408 — Triple Video Filter Driver for RGB and YUV Signals
Pin Configuration
1
2
3
4
5
6
7
Y
INA
U
INA
V
INA
GND
Y
INB
U
INB
V
INB
VCC 14
Y
OUT
13
BYPASS 12
U
OUT
11
GND 10
V
OUT
IN
MUX
(A/B)
9
8
Figure 2. Pin Configuration
Pin Definitions
Pin#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Name
Y
INA
U
INA
V
INA
GND
Y
INB
U
INB
V
INB
IN
MUX
(A/B)
V
OUT
GND
U
OUT
BYPASS(Bypass/Filter)
Y
OUT
VCC
Type
Input
Input
Input
Input
Input
Input
Input
Input
Output
Input
Output
Input
Output
Input
Description
Y (Luminance) or Green input A, must be connected to a signal that
includes sync
U or Blue input A
V or Red input A
Must be tied to ground, do not float
Y (Luminance) or Green input B, must be connected to a signal that
includes sync
U or Blue input B
V or Red input B
MUX select, A = ‘1’, B = ‘0’, must be externally tied high or low
V or Red output
Must be tied to ground; do not float
U or Blue output
Filter bypass, BYPASS = ‘1’, FILTER = ‘0’, must be externally tied
high or low
Y or Green output
+5V supply
© 2004 Fairchild Semiconductor Corporation
FMS6408 Rev. 3.0.0
www.fairchildsemi.com
3
FMS6408 — Triple Video Filter Driver for RGB and YUV Signals
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device
reliability. The absolute maximum ratings are stress ratings only.
Symbol
V
CC
Supply Voltage
Analog and Digital
Parameter
Min.
-0.3
-0.3
Max.
6
V
CC
+ 0.3
50
300
Unit
V
V
mA
Ω
Output Current, Any One Channel (Do not exceed)
R
S
Input Source Resistance
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to Absolute Maximum Ratings.
Symbol
T
A
V
CC
V
CC
Range
Parameter
Temperature Range
Min.
-40
+4.75
Typ.
+5.00
Max.
+85
+5.25
Unit
°C
V
Reliability Information
Symbol
T
J
T
STG
T
L
Θ
JA
Parameter
Junction Temperature
Storage Range Temperature
Lead Temperature (Soldering, 10 Seconds)
Thermal Resistance; JEDEC Standard Multi-layer
Test Boards, in Still Air
Min.
-65
Typ.
Max.
+150
+150
+300
Unit
°C
°C
°C
°C/W
90
© 2004 Fairchild Semiconductor Corporation
FMS6408 Rev. 3.0.0
www.fairchildsemi.com
4
FMS6408 — Triple Video Filter Driver for RGB and YUV Signals
Electrical Characteristics
T
C
= 25˚C, V
I
= 1V
PP
, V
CC
= 5.0V; all inputs AC coupled with 0.1µF; all outputs AC coupled with 220µF into 150Ω,
referenced to 400kHz, 0dB peaking option; unless otherwise noted.
Symbol
I
CC
V
I
V
IL
V
IH
V
CLAMP
PSRR
Parameter
Supply Current
(3)
Input Voltage Maximum
Digital Input Low
(3)
Digital Input High
(3)
Clamp Voltage
(4)
Power Supply Rejection Ratio
Conditions
V
CC
no load
Bypass, A_NB
Bypass, A_NB
YUV/RGB/CV Inputs
PbPr/C Inputs
DC
Min.
Typ.
52
1.4
Max.
86
0.8
V
CC
Units
mA
V
PP
V
V
mV
V
dB
0
2.0
250
1.125
-40
Notes:
3. 100% tested at 25°C.
4. Mode selection for YUV/RGB vs. PbPr/YC vs. YC CV operation based on factory programming.
AC Electrical Characteristics
T
C
= 25˚C, V
I
= 1V
PP
, V
CC
= 5.0V; all inputs AC coupled with 0.1µF; all outputs AC coupled with 220µF into 150Ω,
referenced to 400kHz, 0dB peaking option; unless otherwise noted.
Symbol
A
PB
AV
LF
Parameter
Passband Response
(5)
Low Frequency Gain (All Channels)
(5)
4.2MHz
Conditions
at 400kHz
0dB Peaking Option
0.4dB Peaking Option
0.9dB Peaking Option
1.3dB Peaking Option
All Channels
at 27MHz
All Channels
All Channels
at 3.58MHz
4.2MHz Lowpass, 100kHz
Highpass
18µs, 100 IRE Bar
130 Lines, 18µs, 100 IRE
Bar
400kHz
to 3.58MHz (NTSC)
at 400kHz
400kHz
Settled to 10mV, Initial
Condition 0V
at 1.0MHz
at 1.0MHz
1.4Vpp Output All Channels
Min.
-0.5
5.6
Typ.
0
5.9
0.3
0.7
1.2
1.6
7.6
Max.
6.2
Units
dB
dB
dB
dB
dB
dB
MHz
dB
%
°
%
dB
%
%
ns
ns
ns
∆AV
HF
Delta High Frequency at 5MHz
(All Channels)
(6)
f
C
f
SBh
dG
dθ
THD
SNR
H
DIST
V
DIST
t
pd
GD
t
SKEW
A
V(match)
T
CLAMP
X
TALK
IN
MUXISO
f
1dBWB
-3dB Bandwidth
Stopband Rejection (All Channels)
(5)
Differential Gain
Differential Phase
Total Harmonic Distortion
SNR All Channels (NTC7 Weighted)
Line-Time Distortion
Field-Time Distortion
Propagation Delay (All Channels)
Group Delay (All Channels)
tpdSkew Between Any 2 Channels
Channel Gain Matching
(5)
Clamp Response Time (All Channels)
Crosstalk (Channel-to-Channel)
Input MUX Isolation
Bypass Mode -1dB Bandwidth
48
52
0.2
0.5
0.2
75
TBD
TBD
65
14
2
0
5
-65
-85
25
5
%
ms
dB
dB
MHz
Notes:
5. 100% tested at 25°C
.
6. Peaking Options boost gain by 0dB, 0.4dB, 0.9dB, or 1.3dB from 4.2MHz to 5MHz based on factory
programming.
© 2004 Fairchild Semiconductor Corporation
FMS6408 Rev. 3.0.0
www.fairchildsemi.com
5
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