ML6416

Features:

• 7.1MHz Y and C filters, with CV out
• 14dB notch at 4.5MHz for sound trap
• 42dB stopband attenuation at 27MHz on Y, C, and CV
• Better than 1dB flatness to 4.5 MHz on Y, C, and CV
• RF Modulator output differential group delay between 400kHz and 3.58MHz is typically -170ns.
• No external frequency select components or clocks
• 9ns group delay flatness on Y, C, and CV output
• AC coupled inputs and outputs
• 0.4% differential gain on Y, C and CV channels, 0.4º differential phase on Y, C and CV channels
• 0.8% total harmonic distortion on all channels
• DC restore with low tilt


Application

• Cable Set-top Boxes
• Satellite Set-top Boxes
• DVD Players


Pinout




Specifications

Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute  aximum  ratings are stress ratings only and functional device operation is not implied.

Parameter	Min.	Max.	Units
DC Supply Voltage	-0.3	7	V
Analog & Digital I/O	GND-0.3	VCC+0.3	V
Output Current (Continuous) CV Channel C and Y Channels		60 60	mA mA
Junction Temperature		150
Storage Temperature Range	-65	150
Lead Temperature (Soldering, 10s)		260
Thermal Resistance (JA)		226	W

Description

The ML6416 is a dual Y/C 4th-order Butterworth lowpass video filter optimized for minimum overshoot and flat group delay. The ML6416 also contains a summing circuit to generate filtered composite video, an audio trap and group delay compensation circuit to notch-out audio, providing an area for the addition of the FM audio carrier(s) and mimic the group delay distortion introduced at the transmitter. The group delay predistortion of ML6416 compensates for the nominal TV receiver IF filter distortion.

In a typical application, the Y and C input signals from DACs are AC coupled into the filter. Both channels have DC restore circuitry to clamp the DC input levels during video sync. The Y and C channels of ML6416 use a separate feedback clamp. The clamp pulse is derived from the Y channel.

The outputs of ML6416 are AC coupled. The Y, C, CV, and modulator outputs can drive 2VP-P into a 150 load (1VP-P 75 coax load). The Y, C, CV, and notch channels have a gain of approximately 2 (6dB) with 1VP-P input levels.