EL4093C Elantec Semiconductor, Inc. (acquired by Intersil), EL4093C Datasheet
EL4093C
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EL4093C Summary of contents
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... Elantec Inc EL4093C 300 MHz DC-Restored Video Amplifier General Description The EL4093C is a complete DC-restored video amplifier subsys- tem featuring low power consumption and high slew rate It contains a current feedback amplifier and a sample and hold amplifier designed to stabilize video performance When the ...
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... EL4093C 300 MHz DC-Restored Video Amplifier Absolute Maximum Ratings Supply Voltage Voltage at HOLD input HOLD (DGND (DGND b V Voltage at any other input IN V Difference between Sample and Hold inputs IN I Video amplifier output current OUT1 Important Note ...
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... Flatness Bandwidth g Peaking Frequency Response Peaking SR Slew rate V between 2V and b OUT dG Differential Gain Error Voffset between d Differential Phase Error Voffset between EL4093C 300 MHz DC-Restored Video Amplifier Min Typ Max 200 ...
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... EL4093C 300 MHz DC-Restored Video Amplifier Closed-Loop AC Electrical Characteristics Power supplies Sample and Hold Section Parameter Description I Change in Sample to Hold Output Current Due to Hold Step STEP T Sample to Hold Delay Time SH T Hold to Sample Delay Time ...
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... Non-inverting Frequency Response (Phase) 44093 – 5 Inverting Frequency Response (Phase) 44093 – 8 Frequency Response for Various C IN 44093 – EL4093C Frequency Response for Various R L 44093 – 6 Frequency Response for Various C L 44093 – Bandwidth vs Temperature (Video Amp) 44093 – 12 ...
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... EL4093C 300 MHz DC-Restored Video Amplifier Typical Performance Curves Peaking vs Temperature (Video Amp) 44093 – 13 Voltage and Current Noise vs Frequency Input Offset Voltage vs Die Temperature (Video Amp 3 Sample) 44093 – 18 Contd Output Voltage Swing vs Frequency 44093 – 14 Supply Current vs Temperature 44093 – 16 ...
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... Contd Input Bias Current vs Die Temperature (Sample Hold) 44093 – 22 Output Current Swing vs Temperature (Sample 44093 – 38 Charge Current vs Temperature (Sample Hold) 44093 – EL4093C Transconductance vs Temperature (Sample Hold) 44093 – 23 Hold) 44093 – 25 Hold Step ( I ) OUT vs Temperature 44093 – 28 ...
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... EL4093C 300 MHz DC-Restored Video Amplifier Typical Performance Curves Differential Gain and Phase vs DC Input Voltage MHz 44093 – 29 Small-Signal Step Response Settling Time vs Settling Accuracy (Video Amp) 44093 – 34 Contd Differential Gain and Phase vs DC Input Voltage MHz 44093 – ...
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... CFA output towards the ref- erence voltage at the same time putting a correc- tion voltage onto the hold capacitor C During the rest of the line (60 s) the EL4093C is in hold mode but DC correction is maintained by the voltage ...
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... S H output connects to this node it is important to minimize the trace capacitance Good practice here would be to connect the two pins with a short trace directly underneath the chip Feedback Resistor Values The EL4093C has been optimized for a gain of 2 with R 750 ...
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... The current from gm2 then flows IN through the converter made up of the CFA and R to produce a voltage gain Thus the F GBWP of the overall loop is given GBWP EL4093C 0 75V a RF must flow through must go into ...
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... EL4093C 300 MHz DC-Restored Video Amplifier Applications Information With R 750 a GBWP of 310 kHz is ob tained Note however that this is the small signal GBWP As mentioned earlier the sample and hold has special boost circuits built in which pro- vides charge current during full slew ...
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... When the S H compares the video to the refer- ence voltage during this period the colorburst (40 IRE ) triggers the S H boost circuit and P-P prevents the autozero loop from settling 13 EL4093C would HOLD too small a C would HOLD A sufficiently large of 470 pF results in ...
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... EL4093C 300 MHz DC-Restored Video Amplifier Applications Information A remedy for this situation is to attenuate the colorburst before applying it to the S H input Figure 6 below shows MHz chroma trap which would notch out the colorburst while pre- serving the video DC level ...
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... Maintaining the EL4093 in this state for more than a few seconds may cause the part to exceed addition to metal migration problems JMAX 15 EL4093C 5V Assume that in the worst g 2V into mA) g for the EL4093 is MAX ...
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... EL4093C 300 MHz DC-Restored Video Amplifier General Disclaimer Specifications contained in this data sheet are in effect as of the publication date shown Elantec Inc reserves the right to make changes in the circuitry or specifications contained herein at any time without notice Elantec Inc assumes no responsibility for the use of any ...