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PDF EL4584 Data sheet ( Hoja de datos )
| Número de pieza | EL4584 | |
| Descripción | Horizontal Genlock/ 4FSC | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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Data Sheet
October 18, 2004
EL4584
FN7174.1
Horizontal Genlock, 4FSC
The EL4584 is a PLL (Phase Lock Loop) sub system,
designed for video applications but also suitable for general
purpose use up to 36MHz. In video applications, this device
generates a TTL/CMOS compatible Pixel Clock (CLK OUT)
which is a multiple of the TV horizontal scan rate and phase
locked to it.
The reference signal is a horizontal sync signal, TTL/CMOS
format, which can be easily derived from an analog
composite video signal with the EL4583 Sync Separator. An
input signal to “coast” is provided for applications were
periodic disturbances are present in the reference video
timing such as VTR head switching. The Lock detector
output indicates correct lock.
The divider ratio is four ratios for NTSC and four similar
ratios for the PAL video timing standards, by external
selection of three control pins. These four ratios have been
selected for common video applications including 4FSC,
3FSC, 13.5MHz (CCIR 601 format) and square picture
elements used in some workstation graphics. To generate
8FSC, 6FSC, 27MHz (CCIR 601 format) etc. use the
EL4585, which includes an additional divide-by-two stage.
For applications where these frequencies are inappropriate
or for general purpose PLL applications the internal divider
can be bypassed and an external divider chain used.
FREQUENCIES AND DIVISORS
FUNCTION
Divisor
3FSC CCIR 601 SQUARE
(NOTE 1) (NOTE 2) (NOTE 3)
851 864 944
4FSC
1135
PAL FOSC (MHz)
Divisor
13.301
682
13.5
858
14.75
780
17.734
910
NTSC FOSC MHz) 10.738
13.5
12.273 14.318
NOTES:
1. 3FSC numbers do not yield integer divisors.
2. CCIR 601 Divisors yield 720 pixels in the portion of each line for
NTSC and PAL.
3. Square pixels format gives 640 pixels for NTSC and 768 pixels
for PAL in the active portion.
Features
• 36MHz, general purpose PLL
• 4FSC based timing (use the EL4585 for 8FSC)
• Compatible with EL4583 sync separator
• VCXO, Xtal, or LC tank oscillator
• < 2ns jitter (VCXO)
• User controlled PLL capture and lock
• Compatible with NTSC and PAL TV formats
• 8 pre-programmed TV scan rate clock divisors
• Selectable external divide for custom ratios
• Single 5V, low current operation
Applications
• Pixel clock regeneration
• Video compression engine (MPEG) clock generator
• Video capture or digitization
• PIP (Picture in Picture) timing generator
• Text or graphics overlay timing
Ordering Information
PART NUMBER
PACKAGE
TAPE & PKG. DWG.
REEL
#
EL4584CN
16-Pin PDIP
- MDP0031
EL4584CS
16-Pin SO (0.150”)
-
MDP0027
EL4584CS-T7 16-Pin SO (0.150”)
7”
MDP0027
EL4584CST-13 16-Pin SO (0.150”)
13”
MDP0027
NOTE: For 6FSC and 8FSC clock frequencies, see EL4585
datasheet.
Demo Board
A demo PCB is available for this product.
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2002-2004. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.
1 page  
Typical Performance Curves
IDD vs FOSC
EL4584
EL4584 OSC GAIN @ 20MHz vs TEMPERATURE
TYPICAL VARACTOR
OSC GAIN vs FOSC
CHARGE PUMP DUTY CYCLE vs θE
Package Power Dissipation vs Ambient Temperature
JEDEC JESD51-3 Low Effective Thermal Conductivity
Test Board
1.8
1.6 1.54W
1.4
1.2
θJA
1.136W
=81°PCD/WIP16
1
0.8
0.6
θJAS=O11160°(C0./1W50”)
0.4
0.2
0
0 25 50 75 85 100 125 150
Ambient Temperature (°C)
Package Power Dissipation vs Ambient Temperature
JEDEC JESD51-7 High Effective Thermal Conductivity
Test Board
2
1.8
1.786W
1.6
1.4 1.563W
1.2
PDIP16
θJA=70°C/W
1 SO16 (0.150”)
0.8 θJA=80°C/W
0.6
0.4
0.2
0
0 25 50 75 100 125 150
Ambient Temperature (°C)
5 FN7174.1
5 Page 
EL4584
The VCO and loop filter section of the EL4583/4/5 demo
board can be implemented in the following configurations:
(1) VCXO
Component Sources
Inductors
• Dale Electronics
E. Highway 50
PO Box 180
Yankton, SD 57078-0180
(605) 665-9301
Crystals, VCXO, VCO Modules
• Connor-Winfield
2111 Comprehensive Drive
Aurora, IL 60606
(708) 851-4722
• Piezo Systems
100 K Street
PO Box 619
Carlisle, PA 17013
(717) 249-2151
• Reeves-Hoffman
400 West North Street
Carlisle, PA 17013
(717) 243-5929
• SaRonix
151 Laura Lane
(2) XTAL
(3) LC TANK
Palo Alto, CA 94043
(415) 856-6900
• Standard Crystal
9940 Baldwin Place
El Monte, CA 91731
(818) 443-2121
Varactors
• Sky Works Solutions Inc.
20 Sylvan Road
Woburn, MA 01801
(781) 376-3000
www.skyworksinc.com
• Motorola Semiconductor Products
2100 E. Elliot
Tempe, AZ 85284
(602) 244-6900
Note: These sources are provided for information purposes
only. No endorsement of these companies is implied by this
listing.
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
11 FN7174.1
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet EL4584.PDF ] | |
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