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Part: EL4501CS
Category:
Analog & Mixed-Signal Processing
Description: Video Front End
Company: Elantec Semiconductor, Inc. (acquired by Intersil)
Datasheet: Download EL4501CS datasheet File size : 7 kB
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Datasheet text preview:
EL4501C - Preliminary
EL4501C - Preliminary
Video Front End
Features
· · · · · · · · DC restore and sync separator Wideband (100MHz) DC restore Advanced sync separator Programmable data slicer Single 5 volt operation Differential Gain = 0.1% Differential Phase = 0.1° Low power (<75mW)
General Description
The EL4501C Video Front End (VFE) is an integrated solution that provides the key analog signal conditioning functions for analog video signals. It forms the front end interface for either an analog or analo g/digital video system. The VFE contains a high bandwidth DC Restore, a sophisticated Sync Separator, and a Data Slicer for embedded data recovery. Th e VFE will perform the restoration of the DC reference level (blanking level) and the extraction of all of the necessary timing signals needed for synchronization and control. The sync separator is designed for very good noise immunity by incorporating a signal qualification scheme and internal brick wall filter. A data slicer is also included to help decode data embedded in the active video or VBI areas of the signal. The VFE operates from a single 5 volt supply and is available in a small 24 pin QSOP package that takes only 0.08in2(54mm2) of board area, as well as a standard 24 pin SOIC.
Applications
· · · · · Video Capture & Editing Video Projectors Set Top Boxes Security Video Embedded data recovery
Ordering Information
Part No. EL4501CS EL4501CU Temp. Range -40°C to +85°C -40°C to +85°C Package 24-Pin SOIC 24-Pin QSOP Outline # MDP0027 MDP0031
Connection Diagram
VFB 1 VIDEO_IN 2 DS_MODE 3 DS_ENAB 4 GN D 5 GNDD 6 RFREQ 7 FSEL 8 SYNC_IN 9 LOS 10 COMPOSITE 11 HORIZONTAL 12 24 VIDEO_OUT 23 DS_OUT 22 DS_REF 21 REF_IN 20 REF_OUT 19 VS 18 VSD 17 SYNC_AMP
September 7, 2000
16 N C 15 BACK_PORCH 14 ODD/EVEN 13 VERTICAL
© 2000 Elantec Semiconductor, Inc.
EL4501C - Preliminary
EL4501C - Preliminary
Video Front End
Absolute Maximum Ratings (T
A
= 25°C)
Values beyond absolute maximum ratings can cause the device to be prematurely damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. +6V Supply Voltage (VS to GND) Input Voltage GND - 0.3V, VS +0.3V
Storage Temperature Range Ambient Operating Temperature Operating Junction Temperature Power Dissipation
-65°C to +150°C -40°C to +85°C 125°C See Curves
Important Note: All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA.
Electrical Characteristics
VS = +5V, GND = 0V, TA = 25°C, Input Video = 1VP-P unless otherwise specified. Parameter IS VOP Supply Current Positive Output Voltage Swing Video Amplifier Section RL = 150 to VS/2 RL = 150 to GND RL = 1k to VS/2 VON Negative Output Voltage Swing RL = 150 to VS/2 RL = 150 to GND RL = 1k to VS/2 +IOUT -IOUT dG dP BW BW1 SR VR L ts RIN CIN AVOL Positive Output Current Negative Output Current Differential Gain Error Differential Phase Error Bandwidth Bandwidth Slew Rate Ref Level Range Settling Time Input Resistance (VIDEO_IN) Input Capacitance (VIDEO_IN) Open Loop Voltage Gain RL = no load, VOUT = 0.5V to 3V RL = 150 to GND, VOUT = 0.5V to 3V DC Restore Section CMIR VOS TCVOS IB II H II L VI H VI L VOH VOL IOUT Common Mode Input Range (REF_IN) Input Offset Voltage Input Offset Voltage Temperature Coefficient Input Bias Current (REF_IN) Input High Current (DS_MODE & DS_ENAB) Input Low Current (DS_MODE & DS_ENAB) Input High Voltage (DS_MODE & DS_ENAB) Input Low Voltage (DS_MODE & DS_ENAB) Output High Voltage (DS_OUT) Output Low Voltage (DS_OUT) Short Circuit Current (DS_OUT) IOUT = -1mA IOUT = 1mA RL = 10 to 2.5V 15 4.75 4.9 0.1 20 0.25 VCM = 0V to 3.5V VIH = 5V VIL = 0V 4.5 0.5 CMRR TBD dB DC restored 0 -20 10 1 4 1 100 6 100 3.5 + 20 V mV µ V/°C nA µA nA V V V V mA 54 40 to 0.1%, VIN = 0V to 3V 90
[1] [1]
Description
Conditions No Load, VIN = 0V
Min
Typ
Max 20
Unit mA V V V
4.70 4.20 4.95
4.85 4.60 4.97 0.15 0 0.03 0.05 120 -8 0 0.30
V V V mA mA % ° MHz MHz MHz V/µ s
RL = 10 to VS/2 RL = 10 to VS/2 Standard NTSC test, AV = 2, RL = 150 Standard NTSC test, AV = 2, RL = 150 -3dB, G = 1, RL = 10k to GND -3dB, G = 1, RL = 150 to GND +/-0.1dB, G = 2, RL = 150 to GND 25% to 75%, 3.5VP-P, RL = 150
60 -50
80 - 60 0.1 0.1 100 60 8
150 0
200 3.5 35 115 1.5 65 50 140
V ns k pF dB dB
Data Slicer Section
2
EL4501C - Preliminary
EL4501C - Preliminary
Video Front End
Electrical Characteristics
VS = +5V, GND = 0V, TA = 25°C, Input Video = 1VP-P unless otherwise specified. Parameter IB Vos VHYS tPD tR/F VO H VO L VTHSRH TC D TC D VS R RINSR VRANGE tCD tBD tBW tHD tHW tVW tVDD fH VLOS tJIT VREF Description Input Bias Current (DS_REF) Input Offset Voltage Hysteresis Propagation Delay Rise/Fall Time Output High Voltage Output Low Voltage Slicing Level Composite Sync Delay Composite Sync Delay Sync In Reference Level Sync Reference Input Impedance Input Dynamic Range Comp Sync Delay Back Porch Delay Back Porch Width Horiz Sync Delay Horiz Sync Width Vert Sync Width Vert Sync Default Delay Horiz Scan Rate LOS Detect Threshold Output Jitter Reference Output Voltage (REF_OUT) Serrations No serrations RFREQ = xx to yy k Compared to Sync Tip Amplitude All sync separator outputs IOUT = +2mA to -0.5mA 1.2 1.3 From 50% point of leading edge of sync From 50% point of leading edge of sync From 50% point of trailing edge of sync 0. 5 50 340 2.7 35 0 3.7 185 51 15 72 5 1.4 75 430 3.0 450 4.7 195 63. 5 With Filter Without Filter 50% to 50% 10% to 90%, RL = 150k, CL = 5pF IOH = -1.6mA IOL = 1.6mA 45 TBD TBD 1.5 90 2.0 100 520 3.3 550 5.7 205 76 130 50 4.6 0.4 55 TBD TBD V k Vp-p ns ns µs ns µs µs µs kHz mV ns V Conditions DS_REF = 0V & 5V Min -100 -20 10 18 1.2 Typ 1 Max 100 +20 15 28 1.8 Unit nA mV mV ns ns V V %
Sync Separator Section
Reference Section
3
EL4501C - Preliminary
EL4501C - Preliminary
Video Front End
Typical Performance Curves
4
EL4501C - Preliminary
EL4501C - Preliminary
Video Front End
Timing Diagrams
Fields One and Three (ODD) Composite Signal
Composite Sync Output
Burst/Back Porch Output
Horizontal Sync Output
Vertical Sync Output
Odd/Even Output
Fields Two and Four (EVEN) Composite Signal
Composite Sync Output
Burst/Back Porch Output
Horizontal Sync Output
Vertical Sync Output
Odd/Even Output
5
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