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PDF LD6143 Data sheet ( Hoja de datos )
| Número de pieza | LD6143 | |
| Descripción | Three Channel 4th Order Video Filter Driver | |
| Fabricantes | SWID | |
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LD6143
Three Channel 4th Order Video Filter Driver
DESCRIPTION
The LD6143 video filter driver is intended to
replace passive LC filters and drivers with a
integrate vice. Three fourth-order filters
provide improved image quality compared to
typical 2nd or 3rd order passive solutions.
The LD6143 may be driven by a DC or an
AC-coupled video signal. The outputs can
drive AC or DC-coupled single 150Ω or
dual 75Ω loads.
FEATURE
Three fourth-order 8MHz Standard
Definition SD video filters
Transparent input clamping
Dual video load drive 2Vpp, 75Ω
AC or DC-coupled inputs
AC or DC-coupled outputs
5V only
SOIC-8 package
APPLICATION
Use for the Cable set top boxes, Satellite set top boxes, DVD players, HDTV, Personal video
recorders PVR or Video on demand VOD .
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATION
IN1 1
8 OUT1
IN2 2
7 OUT2
IN3 3
Vcc 4
6 OUT3
5 GND
PIN DESCRIPTION
PIN
1
2
3
4
5
6
7
8
PIN
IN1
IN2
IN3
VCC
GND
OUT3
OUT2
OUT1
Description
Video input, Channel 1
Video input, Channel 2
Video input, Channel 3
+5V supply, do not float
Ground, do not float
Filtered output, Channel 3
Filtered output, Channel 2
Filtered output, Channel 1
For pricing, delivery, and ordering information, please contact SWID at
+86-023-62836174, or visit SWID’s website at www.swid.com.cn
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1 page  
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LD6143
Three Channel 4th Order Video Filter Driver
Figure 2. Input clamp circuit
I/O Configuration
For DC-coupled DAC drive with DC-coupled outputs, use this Figure 3 configuration.
Figure 3. DC-coupled input and output
Alternatively, if the DAC’s average DC output level causes the signal to exceed the range of 0V
to 1.4V, it can be AC-coupled as follows Figure 4.
Figure 4. AC-coupled input, DC-coupled output
When the LD6143 is driven by an unknown external source or a SCART switch with its own
clamping circuitry the inputs should be AC-coupled like this Figure 5.
Figure 5. SCART with DC-coupled output
SWID Integrated Products, 5.F, Building B, Information & Technology Park, Economic & Technological
Development Zone, Chong qing, China.
Tel: (86 23)62836174
Fax: (86 23)62836149
E-mail: [email protected]
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet LD6143.PDF ] | |
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