|
|
PDF FMS6141 Data sheet ( Hoja de datos )
| Número de pieza | FMS6141 | |
| Descripción | Single-Channel 4th-Order Standard Definition Video Filter Driver | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de FMS6141 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
November 2006
FMS6141
Low-Cost, Single-Channel 4th-Order
Standard Definition Video Filter Driver
Features
Single 4th-Order 8MHz (SD) Filter
Drives Single, AC- or DC-coupled, Video Loads
(2Vpp, 150Ω)
Drives Dual, AC- or DC-coupled, Video Loads
(2Vpp, 75 Ω)
Transparent Input Clamping
AC- or DC-Coupled Input
AC- or DC-Coupled Output
DC-Coupled Output Eliminates AC-Coupling
Capacitors
Single Supply
Robust 10kV ESD Protection
Lead-Free Packages: SOIC-8 or SC70-5
Applications
Cable Set-Top Boxes
Satellite Set-Top Boxes
DVD Players
HDTVs
Personal Video Recorders (PVR)
Video On Demand (VOD)
Description
The FMS6141 Low-Cost Video Filter is intended to
replace passive LC filters and drivers with a low-cost
integrated device. The 4th-order filter provides improved
image quality compared to typical 2nd or 3rd-order
passive solutions.
The FMS6141 may be directly driven by a DC-coupled
DAC output or an AC-coupled signal. Internal diode
clamps and bias circuitry may be used if an AC-coupled
input is required (see Application Information for details).
The FMS6141’s output can drive an AC- or DC-coupled
single (150 Ω) or dual (75 Ω) load. DC-coupling the
output removes the need for output coupling capacitors.
The input DC level is offset approximately +280mV at
the output (see Application Information for details).
Related Applications Notes
AN-6041 PCB Layout Considerations for Video
Filter / Drivers
AN-6024 FMS6xxx Product Series Understanding
Analog Video Signal Clamps, Bias, DC-Restore,
and AC or DC Coupling Methods
Functional Block Diagram
VIDEOIN
Transparent Clamp
2X
8MHz, 4th-order
Figure 1. FMS6141 Block Diagram
VIDEOOUT
© 2006 Fairchild Semiconductor Corporation
FMS6141 Rev. 1.0.0
www.fairchildsemi.com
1 page  
Application Information
Input Considerations
The FMS6141 Low-Cost Video Filter provides 6dB (2X)
gain from input to output. The device provides an
internal diode clamp to support AC-coupled input
signals. In this configuration, a 0.1µF ceramic capacitor
is used to AC couple the input signal. If the input signal
does not go below ground, the clamp is inactive; but if
the input signal goes below ground, the clamp circuitry
sets the bottom of the sync tip (or lowest voltage) to just
below ground. The input level set by the clamp,
combined with the internal DC offset, keeps the output
signal within an acceptable range. This clamp feature
also allows the FMS6141’s input to be directly driven
(DC-coupled) by a ground referenced DAC output.
Figure 4 shows typical DC voltage levels for the input
and output signals when driven by a DC-coupled DAC
output or an AC-coupled and clamped Y, CV signal.
1.0 -> 1.02V
0.65 -> 0.67V
0.3 -> 0.32V
0.0 -> 0.02V
2.28V
1.58V
0.88V
Vin 0.28V
Figure 4. Typical DC Voltage Levels
Vout
Output Considerations
The FMS6141’s output is DC offset from the input by
280mv; therefore VOUT = 2 • VIN+280mv. This offset is
required to obtain optimal performance from the output
driver and is held at the minimum value to decrease the
standing DC current into the load. Since the FMS6141
has a 2x (6dB) gain, the output is typically connected via
a 75Ω-series, back-matching resistor followed by the
75Ω video cable. Due to the inherent divide-by-two of
this configuration, the blanking level at the load of the
video signal is always less than 1V. When AC-coupling
the output, ensure that the coupling capacitor of choice
passes the lowest frequency content in the video signal
and that line time distortion (video tilt) is kept as low as
possible. The selection of the coupling capacitor is a
function of the subsequent circuit’s input impedance and
the leakage current of the input being driven. To obtain
the highest quality output video signal, the series
termination resistor must be placed as close to the
device’s output pin as possible. This greatly reduces
parasitic capacitance and inductance effects on the
FMS6141’s output driver. The distance from the device’s
pin to the series termination resistor should be no
greater than 0.1 inches, as shown in Figure 5.
Figure 5. Resistor Placement
© 2006 Fairchild Semiconductor Corporation
FMS6141 Rev. 1.0.0
5
www.fairchildsemi.com
5 Page 
TRADEMARKS
The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an
exhaustive list of all such trademarks.
ACEx™
ActiveArray™
Bottomless™
Build it Now™
CoolFET™
CROSSVOLT™
DOME™
EcoSPARK™
E2CMOS™
EnSigna™
FACT®
FACT Quiet Series™
FAST®
FASTr™
FPS™
FRFET™
GlobalOptoisolator™
GTO™
HiSeC™
I2C™
i-Lo™
ImpliedDisconnect™
IntelliMAX™
ISOPLANAR™
LittleFET™
MICROCOUPLER™
MicroFET™
MicroPak™
MICROWIRE™
MSX™
MSXPro™
OCX™
OCXPro™
OPTOLOGIC®
OPTOPLANAR™
PACMAN™
POP™
Power247™
PowerEdge™
PowerSaver™
PowerTrench®
QFET®
QS™
QT Optoelectronics™
Quiet Series™
RapidConfigure™
RapidConnect™
ScalarPump™
μSerDes™
SILENT SWITCHER®
SMART START™
SPM™
Stealth™
SuperFET™
SuperSOT™-3
SuperSOT™-6
SuperSOT™-8
SyncFET™
TCM™
TinyBoost™
TinyBuck™
TinyLogic®
TINYOPTO™
TinyPower™
TinyPWM™
TruTranslation™
UHC®
UltraFET®
UniFET™
VCX™
Wire™
Across the board. Around the world.™
Programmable Active Droop™
The Power Franchise®
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. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S
WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS.
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 FAIRCHILD SEMICONDUCTOR CORPORATION.
As used herein:
1. Life support devices or systems are devices or systems 2. A critical component in any component of a life support,
which, (a) are intended for surgical implant into the body or
device, or system whose failure to perform can be
(b) support or sustain life, and (c) whose failure to perform
reasonably expected to cause the failure of the life
when properly used in accordance with instructions for use
support device or system, or to affect its safety or
provided in the labeling, can be reasonably expected to
effectiveness.
result in a significant injury of the user.
PRODUCT STATUS DEFINITIONS
Definition of Terms
Datasheet Identification
Advance Information
Product Status
Formative or In
Design
Preliminary
First Production
No Identification Needed
Full Production
Obsolete
Not In Production
Definition
This datasheet contains the design specifications for product
development. Specifications may change in any manner without
notice.
This datasheet contains preliminary data; supplementary data will
be published at a later date. Fairchild Semiconductor reserves the
right to make changes at any time without notice to improve design.
This datasheet contains final specifications. Fairchild
Semiconductor reserves the right to make changes at any time
without notice to improve design.
This datasheet contains specifications on a product that has been
discontinued by Fairchild Semiconductor. The datasheet is printed
for reference information only.
Rev. I21
© 2006 Fairchild Semiconductor Corporation
FMS6141 Rev. 1.0.0
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet FMS6141.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| FMS6141 | Single-Channel 4th-Order Standard Definition Video Filter Driver | Fairchild Semiconductor |
| FMS6143 | Low Cost Three Channel 4th Order Standard Definition Video Filter Driver | Fairchild Semiconductor |
| FMS6143A | Low-Cost Three-Channel 6th-Order Standard Definition Video Filter Driver | Fairchild Semiconductor |
| FMS6143CS | Low Cost Three Channel 4th Order Standard Definition Video Filter Driver | Fairchild Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |