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ML6421CS-4 Datasheet(PDF) 1 Page - Micro Linear Corporation |
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ML6421CS-4 Datasheet(HTML) 1 Page - Micro Linear Corporation |
1 / 13 page September 1999 ML6421 * Triple Phase and Sinx/x Equalized, Low-Pass Video Filter 1 GENERAL DESCRIPTION The ML6421 monolithic BiCMOS 6th-order filter provides fixed frequency low pass filtering for video applications. This triple phase-equalized filter with Sinx/x correction is designed for reconstruction filtering at the output of a Video DAC. Cut-off frequencies are either 5.5, 8.0, or 3.0MHz. Each channel incorporates a 6th-order lowpass filter, a first order all-pass filter, a gain boost circuit, and a 75 Ω coax cable driver. A control pin (Range) is provided to allow the inputs to swing from 0 to 1V, or 0.5 to 1.5V, by providing a 0.5V offset to the input. The unity gain filters are powered from a single 5V supply, and can drive 1VP-P over 75Ω (0.5V to 1.5V), or 2VP-P over 150 Ω (0.5V to 2.5V) with the internal coax drivers. BLOCK DIAGRAM *Some Packages Are Obsolete FEATURES s 5.5, 8.0, 9.3, or 3.0MHz bandwidth s 1x or 2x gain s 6th-order filter with phase and amplitude equalizer s >40dB stopband rejection s No external components or clocks s ±10% frequency accuracy over maximum supply and temperature variation s <2% differential gain <2° differential phase s <25ns group delay variation s Drives 1VP-P into 75Ω, or 2VP-P into 150Ω s 5V ±10% operation 15 5 6 4 BUF 1X/2X BUF LOW PASS FILTER A VINA 10 VOUTA 3k Ω 1k Ω 3.33k Ω 16 1 BUF LOW PASS FILTER B VINB 9 3 VOUTB 3.33k Ω 2 14 BUF LOW PASS FILTER C VINC 7 VOUTC 3.33k Ω VCCC 8 VCCB VCC 11 VCCA GNDC 13 GNDA 12 GND GND RANGE GNDB IBIAS IBIAS IBIAS 3k Ω 1k Ω 3k Ω 1k Ω SINX/X EQUALIZER SINX/X EQUALIZER SINX/X EQUALIZER ALL PASS FILTER ALL PASS FILTER ALL PASS FILTER 1X/2X BUF 1X/2X BUF Triple Input/Anti-aliasing Video Filter 1x GAIN 2x GAIN ML6221-1 ML6421-3 ML6421-4 ML6421-5 ML6421-7 FilterA 5.5MHz 8.0MHz 8.0MHz 5.5MHz 9.3MHz Filter B 5.5MHz 8.0MHz 3.0MHz 5.5MHz 9.3MHz Filter C 5.5MHz 8.0MHz 3.0MHz 5.5MHz 9.3MHz |
Similar Part No. - ML6421CS-4 |
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Similar Description - ML6421CS-4 |
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