General Description

The ML6428 is a dual Y/C 4th-order Butterworth lowpass video filter optimized for minimum overshoot and flat group delay. The device also contains a summing circuit to generate filtered composite video.

Features

• 6.7MHz Y and C filters, with CV out for NTSC or PAL

• 75Ω cable line driver for Y, C, CV, and TV modulator

• 43dB stopband attenuation at 27MHz

• 1dB flatness up to 4.8MHz

• No external frequency select components or clocks

• 12ns group delay flatness up to 10MHz

• 5 overshoot on any input edge

• AC coupled input and output (ML6428CS-1)

• AC coupled input and DC coupled output (ML6428CS-2)

• 0.4 differential gain on all channels, 0.4º differential phase on all channels

• 0.7 total harmonic distortion on all channels

• 5V ±10 operation

• DC restore with low tilt