GENERAL DESCRIPTION

The ML6424 is a monolithic BiCMOS 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.

FEATURES

■ External or internal input clamping with pulse output for synchronous clamping of multiple filters

■ Frequency tunable with REXT: ±10

■ ±0.25dB ripple

■ >40dB attenuation at f > 1.45 x fC (w/o sinx/x)

■ >35dB attenuation at f > 1.45 x fC (with sinx/x)

■ –12dB attenuation at f = 1.23 x fC

■ Group delay distortion: ±20ns up to 0.9 x fC

■ <1 peak overshoot and ringing on 2T test pulse

■ 0.5 diff. gain and 0.5⋅ diff. phase typical

■ THD <1 at 3.58 or 4.43MHz

■ Programmable input-output gain of 1x or 2x

■ 5V ±5 operation