el4501 Intersil Corporation, el4501 Datasheet
el4501
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el4501 Summary of contents
Page 1
... Data Sheet Video Front End The EL4501 is a highly-integrated Video Front End (VFE) incorporating all of the key signal conditioning functions for analog video signals. It provides a flexible front-end interface for analog or analog/digital video sub-systems. The VFE contains a high bandwidth DC-restore, an advanced sync separator and a data slicer with an adjustable threshold, configurable output and power-down mode ...
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... CMIR Common Mode Input Range (REF IN) V Input Offset Voltage OS TCV Input Offset Voltage Temperature Coefficient OS I Input Bias Current (REF IN EL4501 = 25°C) Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 125°C +0.3V Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves S Maximum Continuous Current (VIDEO OUT 50mA = 5V, GND = 0V 25° ...
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... HD t BACK PORCH Width BW t HORIZONTAL Width HW t HORIZONTAL Width HWF t VERTICAL Width VW t VERTICAL Default Delay VDD t VERTICAL Default Delay VDDF 3 EL4501 = 5V, GND = 0V 25°C, Input Video = CONDITIONS I = +2mA to -0.5mA OUT = -1mA OUT I = +1mA OUT R = 10Ω to 2.5V ...
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... R =0Ω 100K 1M 10M FREQUENCY (Hz) FIGURE 3. FREQUENCY RESPONSE FOR VARIOUS R 4 EL4501 = 5V, GND = 0V 25°C, Input Video = CONDITIONS Minimum sync amplitude to enable outputs Maximum sync amplitude to disable outputs All sync separator outputs R = 13kΩ to 130kΩ FREQ =0Ω ...
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... R =10kΩ GAIN R =150Ω -10 1K 10K 100K 1M FREQUENCY (Hz) FIGURE 9. OPEN LOOP GAIN AND PHASE vs FREQUENCY 5 EL4501 (Continued) =500Ω 10M 100M FIGURE 6. FREQUENCY RESPONSE FOR VARIOUS R F 100M L 0 -45 PHASE R =10kΩ L -90 -135 -180 -270 10M 100M FIGURE 10 ...
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... FIGURE 13. DIFFERENTIAL PHASE FOR R 0.15 R =10kΩ 0.05 L -0.05 -0.15 R =150Ω L -0.25 -0.35 0 (V) OUT FIGURE 15. DIFFERENTIAL PHASE FOR R 6 EL4501 (Continued) 1M 10M 100M FIGURE 12. DIFFERENTIAL GAIN FOR R R =10kΩ L 2.5 3 3.5 TIED TO 0V FIGURE 14. DIFFERENTIAL GAIN FOR =1kΩ 2 ...
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... TEMPERATURE (°C) FIGURE 19. DROOP CURRENT vs TEMPERATURE 100 DR=Δ 0.1 0. HOLD CAPACITANCE (pF) FIGURE 21. DROOP RATE vs HOLD CAPACITANCE 7 EL4501 (Continued FIGURE 18. DC-RESTORE CURRENT vs TEMPERATURE OUT REF_IN FIGURE 20. HOLD STEP VOLTAGE vs HOLD CAPACITANCE /ΔT RAMP 100 1K ...
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... TEMPERATURE (°C) FIGURE 27. COMPOSITE DELAY vs TEMPERATURE - FSEL = 1 8 EL4501 (Continued) 100 200 FIGURE 24. BACK PORCH AND HORIZONTAL SYNC WIDTH FREQ BACK PORCH (FSEL=1) BACK PORCH (FSEL=0) 100 120 140 FIGURE 26. COMPOSITE DELAY vs TEMPERATURE - FREQ ...
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... R =130kΩ FREQ 150 - TEMPERATURE (°C) FIGURE 33. VERTICAL SYNC WIDTH vs TEMPERATURE 9 EL4501 (Continued 100 FIGURE 30. BACK PORCH DELAY vs TEMPERATURE - 60 80 100 FIGURE 32. BACK PORCH WIDTH vs TEMPERATURE 60 80 100 FIGURE 34. PACKAGE POWER DISSIPATION vs AMBIENT 182 R =130kΩ ...
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... 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 10 EL4501 (Continued) JEDEC JESD51-7 HIGH EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD 1.4 1.136W 1.2 1 0.8 0.6 0.4 0.2 ...
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... Timing Diagrams VIDEO IN COMPOSITE SYNC OUTPUT BURST/BACK PORCH OUTPUT HORIZONTAL SYNC OUTPUT VIDEO IN VERTICAL SYNC OUTPUT ODD/EVEN Standard (NTSC Input) H. Sync Detail 11 EL4501 t<< + ...
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... Input 6 GNDD Input 7 RFREQ Input 12 EL4501 PIN DESCRIPTION Connection for gain and feedback resistors Input to DC-restore amplifier; input coupling capacitor connects from here to video source Sets the mode of the DS comparator; logic low selects a standard logic output; logic high selects an open drain/collector Enables the output of the comparator ...
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... VSD Input 19 VS Input 13 EL4501 PIN DESCRIPTION Enable/bypass internal brick wall filter; a logic high is used to enable the filter; a logic low to disable it Input to the sync separator; connects to the video source via a coupling capacitor color burst input filter Loss of signal output; goes high if no input video signal ...
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... Input 23 DS OUT Output 24 VIDEO OUT Output 14 EL4501 PIN DESCRIPTION Voltage reference for use as blanking level in low cost system DC voltage on this pin sets the DC-restore voltage and output blanking level Sets the slicing level or reference level for the comparator Output of the data slicing comparator; the output is ...
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... LOS RFREQ Applications Information Product Description The EL4501 is a video front-end sub-system comprised of a video amplifier with DC-restore, an adjustable threshold data slicer, and an advanced sync separator. The prime function of the system is to DC-stabilize and buffer AC-coupled analog video signals and to extract timing reference signals embedded in the video signal ...
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... V REF_IN Choice of Hold Capacitor The EL4501 allows the user to choose the hold capacitor as low as 1pF and it is still stable. A smaller hold capacitor has a faster acquisition time and faster auto-zero loop response, but would increase the droop and hold step error. Also, if the ...
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... Obviously, short circuit conditions must not be allowed to persist or internal metal connections will be damaged or destroyed. DRIVING CABLES AND CAPACITIVE LOADS The EL4501 video amplifier can drive 39pF loads in parallel F with 150Ω with 5dB of peaking. For less peaking in theses applications a small series resistor of between 5Ω and 50Ω ...
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... Loss of video signal can be detected by monitoring the LOS output at pin 10. LOS goes low indicating the EL4501 has locked to the right line rate. LOS goes high indicating the EL4501 is out of lock. When there is loss of sync, all the sync outputs go high, except ODD/EVEN. Digital Filter Operation ...
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... V reduce cross talk between the analog signal path and the embedded sync separator, a separate digital supply pin included on the EL4501. This pin should be bypassed in a similar manner to V may be added in line with the supply connections to both pins ...