ML6420CS-3 MICRO-LINEAR [Micro Linear Corporation], ML6420CS-3 Datasheet

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Triple/Dual Phase-Equalized, Low-Pass Video Filter GENERAL DESCRIPTION The ML6420 monolithic BiCMOS 6th-order filters provide fixed frequency low pass filtering for video applications. These triple output phase-equalized filters are designed for input anti-aliasing filtering. Cut-off frequencies are either 3.0, 5.5, 8.0, ...

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ML6420 PIN CONFIGURATION PIN DESCRIPTION PIN NAME FUNCTION 1 GNDB Ground pin for filter Signal input to filter C. Input IN W impedance GND Power and logic ground 4 GNDC Ground pin for ...

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ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. Supply Voltage (V ) ...................................... –0 ...

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ML6420 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER GENERAL (Continued) Output Current C Load Capacitance L Composite ML6420 (–1 to –4) Chroma/Luma Delay At 3.58 ML6420 (–5 to –7) & 4.43MHz 3.0/3.3MHZ FILTER – ML6420 Bandwidth (monotonic passband) Stopband Attenuation Output Noise Group ...

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ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER 5.50MHZ FILTER – ML6420-5 Bandwidth (monotonic passband) Attenuation f = 10MHz 50MHz IN Output Noise Group Delay Small Signal Gain CV Composite Small Signal Gain 9.3MHZ FILTER – ML6420-7 Bandwidth (monotonic passband) Attenuation ...

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ML6420 FUNCTIONAL DESCRIPTION The ML6420 single-chip Dual/Triple Video Filter ICs are intended for low cost professional and consumer video applications. Each channel incorporates an input buffer amplifier, a sixth order lowpass filter, a first order allpass equalizer, and an output ...

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APPLICATION GUIDELINES OUTPUT CONSIDERATIONS The triple filters have unity or 2X gain. The output circuit has unity or 2X gain (0dB) when connected to a 150 load, and a –6dB gain when driving a 75 series output resistor. The output ...

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ML6420 RGB: When the bandwidth of each signal is the same, then the 5.5MHz or 8.0MHz/9.3MHz are appropriate depending on the sampling rate. (13.5MHz vs 27MHz) YUV: When the luminance bandwidth is different from the color bandwidth, the ML6420-4 with ...

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ALIASING: THE PROBLEM Aliasing is a signal distorting process that occurs when an analog signal is sampled. If the analog signal contains frequencies greater than half of the sampling rate, those frequencies will be altered and “folded back” in the ...

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ML6420 USING VIDEO FILTERS (CONTINUIED) The output waveform is not symmetric. All ringing occurs after the main pulse. Result is visual smearing and fine ghosting to the right of every edge in the picture. See old Figure 19a. Phase Corrected ...

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FREQUENCY (Hz) Figure 1A. Stop-Band Amplitude vs Frequency (f = 5.5MHz). ML6420 C Note: Figure 1, 2 and 3 data was measured using the test ...

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ML6420 +5 0 –5 –10 –15 –20 –25 –30 –35 –40 –45 100k 1M FREQUENCY (Hz) Figure 1C. Stop-Band Amplitude vs Frequency (f = 9.3MHz). ML6420 –1 –2 –3 –4 –5 –6 –7 100k 1M ...

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Figure 1H. Cascading Filters for Sharper Cutoff Figure 4. Burst with 100ns Pulse and Fast Transition at ML6420 Output Showing Symetrical Pulse Response Note: Figure 4 and 5 data was measured using the test circuit in Figure 7. Figure 5. ...

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ML6420 +5V FB2 0.001 F 0.1 F 100 F INPUT COUPLING 0.1 F INC 100 F INPUT SIGNAL = 2V P-P 85 INPUT TERMINATION FB1 OUTC 75 Figure 6A. ML6420 AC Coupled DC Bias Test Circuit 14 SUPPLY NOISE CLAMPING ...

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OPTIONAL 6dB GAIN 131 +5V 0.1 F AD847(5V) VIDEO INPUT 1V P-P – 75 47k –5V 0 2.5k R 2.5k G GAIN = 1 + 2.5k Figure 7. Video Clamp Prior to ...

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ML6420 ANALOG VIDEO INPUT Figure 8. DC Coupled Video Digitizer for 2V ANALOG VIDEO INPUT V CC COARSE CLAMP CIRCUITRY Figure 9. AC Coupled Video Digitizer for 2V 16 ML6420/ML6422 ANTI-ALIAS FILTER 500 DIGITAL CLAMP: REF LEVEL COMPARATOR PRECISION CLAMP ...

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SIGNAL ADC ANALOG IN PROCESSING Fs CLOCK Figure 10. Simplified Digital Video Processing System DESIRED PASSBAND SIGNAL CONTENT DISTORTION FROM “FOLDED” FREQUENCIES 0Hz Figure 11. Aliasing in the Frequency Domain HIGH FREQUENCY ELEMENTS THAT ARE “ON” THE CLOCK WILL BE ...

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ML6420 ANALOG IN ML6420 9.3MHz TYP Figure 13. Oversampled Video Processing System with DESIRED PASSBAND SIGNAL CONTENT 0Hz Figure 14. Digital Filtering in the Frequency Domain SAMPLING CLOCK AT OUTPUT 0 18 DIGITAL FILTER ADC HALF-BAND x2 F CLOCK 0 ...

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ANALOG IN ML6420 5.5MHz TYP Figure 16. Video Processing System with Monolithic Analog Anti-Alias Filter DESIRED PASSBAND SIGNAL CONTENT 0Hz Figure 17. Analog Filtering in the Frequency Domain SAMPLING CLOCK AT OUTPUT 0 Figure 18. Analog Filtering in the Time ...

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... ORDERING INFORMATION PART NUMBER BW (MHZ) ML6420CS-1 (EOL) 5.5/5.5/5.5 ML6420CS-3 8.0/8.0/8.0 ML6420CS-4 (EOL) 8.0/3.0/3.0 ML6420CS-5 (EOL) 5.0/5.0/5.0 ML6420CS-7 (EOL) 9.3/9.3/9.3 Micro Linear makes no representations or warranties with respect to the accuracy, utility, or completeness of the contents of this publication and reserves the right to make changes to specifications and product descriptions at any time without notice. No license, express or implied, by estoppel or otherwise, to any patents or other intellectual property rights is granted by this document ...