February 1997 PRELIMINARY
ML6424*/ML6425*
CCIR601 Video Lowpass Filter with Optional Sinx/x Correction
GENERAL DESCRIPTION
The ML6424 is a monolithic Bi
CMOS Video Lowpass Filter IC, incorporating a 5th order Elliptic (Cauer) lowpass filter, a third order allpass filter, and a 75Ω coax cable driver.
The ML6425 additionally provides sinx/x amplitude correction.
These active lowpass filters are available with a 2.
75MHz (-2) or a 5.
50MHz (-1) cutoff frequency.
The input signal can be either AC or DC coupled under the control of the MODE pin.
In the DC coupled case, a control pin (RANGE) is provided to allow the inputs to swing down to ground.
Internal self clamping is provided for AC coupled s...