September 1999 ML6421* Triple Phase and Sinx/x Equalized, Low-Pass Video Filter 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 75Ω 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...

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