FMS6410CS [FAIRCHILD]
Dual Channel Video Drivers with Integrated Filters and Composite Video Summer; 具有集成滤波器和复合视频夏双通道视频驱动器
| 型号： | FMS6410CS |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | Dual Channel Video Drivers with Integrated Filters and Composite Video Summer |
| 文件： | 总9页 (文件大小：318K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
www.fairchildsemi.com
FMS6410
Dual Channel Video Drivers with Integrated Filters
and Composite Video Summer
Video Features
General Description
• Dual integrated video low pass reconstruction filters on
outputs
• Composite Video Summer
The FMS6410 Dual Channel Video Filter – Driver Chip with
CV Summer offers comprehensive video filtering for set top
box or DVD applications. This part consists of two 4th order
Butterworth 7.1MHz low pass filters for video signals. The
filters are optimized for low overshoot and flat group delay.
The device also contains a summing circuit to generate
filtered composite video. Integrated video drivers are
included to facilitate a direct drive to the outside world.
• Integrated output drivers provide low impedance outputs
and deliver 2V
(6dB gain) video into 150Ω.
P-P
• 7.1MHz 4th order video filters
• 7.1MHz Y and C filters, with CV out
• 42dB stopband attenuation at 27MHz on Y, C, and CV
• Better than 1dB flatness to 4.5 MHz on Y, C, and CV
• No external frequency select components or clocks
• 9ns group delay flatness on Y, C, and CV output
• AC coupled inputs and outputs
In a typical application, the Y and C input signals from
DACs are AC coupled into the filter. Both channels have DC
restore circuitry to clamp the DC input levels during video
sync. The Y and C channels use a separate feedback clamp.
The clamp pulse is derived from the Y channel.
• 0.4% differential gain with 0.4° differential phase
• Integrated DC Restore / Clamp circuitry with low tilt
The outputs are AC coupled. The Y, C and, CV outputs are
buffered to drive 2V
doubly terminated 75Ω coax load) with up to 35pF of load
capacitance at the output pin. The Y, C, and CV channels
into a 150Ω load (1V into a
P-P
P-P
Applications
• CCTV
• Cable and Satellite Set top boxes
• DVD players
• Televisions
• Personal Video Recorders (PVRs)
• Video On Demand (VOD)
• Distribution Amplifiers
have a gain of approximately 2 (6dB) with 1V
input
P-P
levels. There is an option for the video output to be DC
coupled which limits the drive output to one output on each
channel.
Functional Block Diagram
SYNC STRIP, REF,
AND TIMING
YOUT
1
2
3
4
8
7
6
5
YIN
6dB
gM
1V
NC (Reserved)
VCC_VIDEO
CVOUT
FMS6410
GND_VIDEO
gM
1V
COUT
CIN
6dB
REV. 0.0.2 9/3/02
FMS6410
PRODUCT SPECIFICATION
Pin Configuration
FMS6410
8-Pin SOIC (SO8)
YIN
NC
1
8
YOUT
2
7
VCC_VIDEO
GND_VIDEO
CIN
3
4
6
5
CVOUT
COUT
Video Section
Pin#
Pin
Type
Input
Description
1
4
5
6
8
Y
IN
C
IN
Luma (Luminance) / Composite Input
Chroma (Chrominance) Input
Input
C
OUT
Output
Output
Output
Filtered Chroma (Chrominance) Output
Summed Composite Video Output
Filtered Luma (Luminance) Output
CV
OUT
Y
OUT
Power/Ground Pins
7
3
2
V
_VIDEO
Power
Power
NC
+5 VDC for Video
CC
GND_VIDEO
NC
Ground for Video
Reserved (Need to Float)
2
REV. 0.0.2 9/3/02
FMS6410
Chrominance (C) I/O
The chroma input is driven by a low impedance source of
0.7V or the output of a 75Ω terminated line. The input is
Functional Description
Introduction
P-P
required to be AC coupled via a 0.1µF coupling capacitor
which allows for a clamp setting time of 5ms. The chroma
output is capable of driving an AC coupled 150Ω load at
The FMS6410 is a dual monolithic continuous time video
filter designed for reconstructing the luminance and chromi-
nance signals from an S-Video D/A source. The Composite
video output is generated by summing the filtered Y and C
outputs. The chip is intended for use in applications with AC
coupled inputs and AC coupled outputs (See Figure 1). The
reconstruction filters approximate a 4th-order Butterworth
characteristic with an optimization toward low overshoot and
flat group delay. Y, C, and CV outputs are capable of driving
2V , or 1V
P-P P-P
into a doubly terminated 75Ω load. Up to
35pF of load capacitance can be driven without stability or
slew issues. A 0.1µF AC coupling capacitor is recommended
at the output. Since chrominance signals do not contain
low frequency components, the smaller 0.1µF cap is
recommended instead of the 220µF cap to reduce circuit
cost.
2V
into AC coupled 150Ω video loads with up to 35pF of
P-P
load capacitance at the output pin. All channels are 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 sources. In most applications the input
coupling capacitors are 0.1µF. The Y and C inputs typically
sink 1µA during active video, which nominally tilts a
horizontal line by about 2mV at the Y output. During sync,
the clamp typically 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 times. This product is
robust and stable under all stated load and input conditions.
Composite Video (CV) Output
The composite video output is capable of driving 2 loads to
2V . It is intended to drive a TV and a VCR. Either the TV
P-P
input or the VCR input can be shorted to ground and the
other output will still meet specifications. Up to 35pF of load
capacitance (at the output pin) can be driven without stability
or slew issues.
DC Coupled Output Applications
The 220µF capacitor coupled with the 150Ω termination
forms a high pass filter that blocks the DC while passing the
video frequencies and avoiding tilt. Lower values such as
10µF would create a problem. By AC coupling, the average
DC level is zero. Thus, the output voltages of all channels
will be centered around zero. Alternately, DC coupling the
output of the FMS6410 is allowable. There are several
tradeoffs: The average DC level on the outputs will be 2V;
Each output will dissipate an additional 40mW nominally;
The application will need to accommodate a 1V DC offset
sync tip; And it is recommended to limit each output to one
150Ω load.
Capacitive bypassing of V directly to ground ensures this
CC
performance.
Luminance (Y) I/O
The luma input is driven by either a low impedance source of
1V
or the output of a 75Ω terminated line. The input is
P-P
required to be AC coupled via a 0.1µF coupling capacitor
which allows for a settling time of 5ms. The luma output is
capable of driving an AC coupled 150Ω load at 2V , or
P-P
1V
P-P
into a doubly terminated 75Ω 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.
REV. 0.0.2 9/3/02
3
FMS6410
PRODUCT SPECIFICATION
Typical Applications
SYNC STRIP, REF,
AND TIMING
YIN
YOUT
75Ω
220µF
Video Cable
YOUT
8
7
6
5
1
2
3
4
YIN
6dB
0.1µF
75Ω
gM
+5.0V
1V
NC (Reserved)
VCC_VIDEO
0.1µF
1µF
FMS6410
CVOUT
220µF
75Ω
Video Cable
CVOUT
GND_VIDEO
75Ω
gM
1V
CIN
0.1µF
COUT
75Ω
Video Cable
COUT
CIN
6dB
0.1µF
75Ω
Figure 1. Typical Configuration
YOUT
75Ω
220µF
Video Cable
75Ω
SYNC STRIP, REF,
AND TIMING
YOUT
YIN
75Ω
220µF
Video Cable
YOUT
8
7
6
5
1
2
3
4
YIN
6dB
0.1µF
75Ω
gM
+5.0V
1V
NC (Reserved)
VCC_VIDEO
0.1µF
1µF
FMS6410
YOUT
220µF
75Ω
Video Cable
CVOUT
GND_VIDEO
75Ω
gM
1V
220µF
YOUT
75Ω
Video Cable
COUT
CIN
6dB
75Ω
Figure 2. One Input to Four Output Distribution Amplifier Configuration
4
REV. 0.0.2 9/3/02
PRODUCT SPECIFICATION
FMS6410
Typical Performance Graphs
1
0
20
0
-1
-2
-3
-4
-20
-40
-60
-80
0.01
0.1
1
10
0.01
0.1
1
10
100
FREQUENCY (MHz)
FREQUENCY (MHz)
Figure 4. Passband/Stopband Rejection Ratios
for Y, C, and CV outputs. (Normalized)
Figure 3. Passband Flatness for Y, C, and CV
outputs (Normalized). Passband is ripple-free.
90
70
50
30
10
1
2
3
4
5
6
7
8
9
10 11
FREQUENCY (MHz)
Figure 5. t Propagation Delay for Y, C,
Figure 6. DC Restore Performance of Luma Output.
Luma ramp test pattern is shown to have minimal tilt
during vertical sync.
PD
and CV Outputs
REV. 0.0.2 9/3/02
5
FMS6410
PRODUCT SPECIFICATION
Absolute Maximum Ratings (beyond which the device may be damaged)
Parameter
Min
-0.3
Max
Units
V
DC Supply Voltage
Analog I/O
+7.0
VCC+0.3
60
GND-0.3
V
Output Current (Continuous)
CV Channel
mA
mA
°C
Y and C Channels
30
Junction Temperature
150
Storage Temperature Range
Lead Temperature (Soldering, 10s)
-65
+150
260
°C
°C
Thermal Resistance (Θ
JA
)
115
°C/W
Note: Functional operation under any of these conditions is NOT implied. Performance and reliability are guaranteed only if
Operating Conditions are not exceeded.
Operating Conditions
Parameter
Min
0
Typ
Max
70
Units
°C
Temperature Range
V
_VIDEO Range
CC
4.75
5.0
60
5.25
85
V
I
(+5 VDC), AC Coupled Outputs
mA
CC
Electrical Characteristics 1Vp-p input signal at room temperature
Video Characteristics - Unless otherwise noted, typical output loading on video output is 150Ω.
Condition
Symbol
Parameter
VCC_VIDEO=+5.0V+/-5%
Min Typ Max Units
5.75 6.0 6.25 dB
5.55 5.9 6.25 dB
AV
Low Frequency Gain (Y
, C
)
at 400kHz
YC
CV
OUT OUT
AV
Low Frequency Gain (CV
)
at 400kHz
OUT
Y
Y
Output Level (During Sync)
Output Level (During Sync)
Sync Present on Y
Sync Present on Y
Sync Present on Y
0.75 1.0 1.25
1.6 2.0 2.4
0.75 1.0 1.25
V
V
SYNC
OUT
IN
IN
IN
C
C
SYNC
OUT
CV
CV
Output Level (During Sync)
OUT
V
SYNC
t
f
f
f
Clamp Response Time (Y Channel)
Settled to within 10mV, 0.1µF cap
5
9
ms
CLAMP
on Y and C
IN IN
–1.0dB Bandwidth (Flatness)
No Peaking Cap (Note 1)
4.0
6.7
-37
1.3
4.5
7.1
-42
MHz
MHz
dB
1dB
C
(Y , C , and CV )
OUT OUT OUT
–3dB Bandwidth (Flatness)
(Y
, C
, and CV
)
)
OUT OUT
OUT
Stopband Rejection
(Y , C , and CV
f
IN
= 27MHz
SB
OUT OUT
OUT
Vi
Input Signal Dynamic Range
Output Short Circuit Current (Note 2)
Output Shunt Capacitance
Differential Gain (Note 3)
AC Coupled (All Channels)
1.4
40
V
P-P
I
Y , C , CV
OUT OUT OUT
to GND
80
mA
pF
%
°
SC
C
All Channels
35
L
dG
Y
, C
, and CV
, and CV
0.4
0.4
0.1
1
1
OUT OUT
OUT
dP
Differential Phase (Note 3)
Y , C
OUT OUT
OUT
THD
Output Distortion (All Channels)(Note 3) Y
OUT
/ C
OUT
= 1.8V
P-P
at
0.5
%
3.58 / 4.43MHz
6
REV. 0.0.2 9/3/02
PRODUCT SPECIFICATION
FMS6410
Electrical Characteristics 1Vp-p input signal at room temperature (continued)
Video Characteristics - Unless otherwise noted, typical output loading on video output is 150Ω.
Condition
Symbol
Parameter
Crosstalk (Note 3)
VCC_VIDEO=+5.0V+/-5%
Min Typ Max Units
XTALK
From C of 0.5V at 3.58MHz -45
-55
dB
IN P-P
to Y
OUT
From Y Input of 0.4V
at
-50
-58
dB
IN
3.58MHz, to C
P-P
OUT
PSRR
SNR
PSRR (All Channels) (Note 3)
Y, C Channel (Note 3)
0.5V
P-P
(100kHz) at V
-30
-65
-40
-75
dB
dB
CC
NTC-7 weighting 4.2 MHz
lowpass
CV Channel (Note 3)
NTC-7 weighting 4.2 MHz
lowpass
-60
30
-70
dB
t
Propagation Delay (Y, C, CV) (Note 3) 100kHz
70
9
110
ns
ns
ns
ns
ns
PD
∆t
pd
Group Delay Deviation from Flatness
(Y, C, and CV) (Note 3)
to 3.58MHz (NTSC)
to 4.43MHz (PAL)
(Note 3) at 1MHz
7
t
Skew between Y
OUT
and C
OUT
0
SKEW
T
Chroma-Luma Delay CV
OUT
f = 3.58MHz (referenced to Y at -35
IN
0
35
CLDCV
400kHz)
T
Chroma-Luma Gain CV
OUT
f = 3.58MHz (referenced to Y at 92
IN
400kHz)
95
104
%
CLGCV
Notes:
1. Peaking capacitor of 330pF increases output at 4.2MHz nominally by 0.7dB
2. Sustained short circuit protection limited to 10 seconds
3. Guaranteed by Characterization
REV. 0.0.2 9/3/02
7
FMS6410
PRODUCT SPECIFICATION
Mechanical Dimensions Inches (millimeters)
Package: S08
8-Pin SOIC
0.189 - 0.199
(4.80 - 5.06)
8
0.148 - 0.158 0.228 - 0.244
PIN 1 ID
(3.76 - 4.01) (5.79 - 6.20)
1
0.017 - 0.027
(0.43 - 0.69)
(4 PLACES)
0.050 BSC
(1.27 BSC)
0.059 - 0.069
(1.49 - 1.75)
0° - 8°
0.012 - 0.020
(0.30 - 0.51)
0.015 - 0.035
(0.38 - 0.89)
0.006 - 0.010
(0.15 - 0.26)
0.055 - 0.061
(1.40 - 1.55)
0.004 - 0.010
(0.10 - 0.26)
SEATING PLANE
8
REV. 0.0.2 9/3/02
FMS6410
PRODUCT SPECIFICATION
Ordering Information
Part Number
FMS6410CS
FMS6410CSX
Temperature Range
0° to 70°
Package
8 Pin SOIC (S08)
Tape and Reel
0° to 70°
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO
ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME
ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN;
NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
9/3/02 0.0m 003
Stock#DS30006410
© 2002 Fairchild Semiconductor Corporation
相关型号：
FMS6417
Selectable RGB (YUV) HD/SD Video Filter Driver with Y, C, Composite, and Modulator Outputs
FAIRCHILD
©2020 ICPDF网 联系我们和版权申明