FMS6410CS 查看數據表（PDF） - Fairchild Semiconductor

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FMS6410CS

Dual Channel Video Drivers with Integrated Filters and Composite Video Summer

Fairchild Semiconductor 

www.fairchildsemi.com

FMS6410

Dual Channel Video Drivers with Integrated Filters

and Composite Video Summer

Video Features

• Dual integrated video low pass reconstruction filters on

outputs

• Composite Video Summer

• Integrated output drivers provide low impedance outputs

and deliver 2VP-P (6dB gain) video into 150Ω.

• 7.1MHz 4th order video filters

• 7.1MHz Y and C filters, with CV out

• 42dB stopband attenuation at 27MHz on Y, C, and CV

• Better than 1dB flatness to 4.5 MHz on Y, C, and CV

• 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 with 0.4° differential phase

• Integrated DC Restore / Clamp circuitry with low tilt

Applications

• CCTV

• Cable and Satellite Set top boxes

• DVD players

• Televisions

• Personal Video Recorders (PVRs)

• Video On Demand (VOD)

• Distribution Amplifiers

Functional Block Diagram

General Description

The FMS6410 Dual Channel Video Filter – Driver Chip with

CV Summer offers comprehensive video filtering for set top

box or DVD applications. This part consists of two 4th order

Butterworth 7.1MHz low pass filters for video signals. The

filters are optimized for low overshoot and flat group delay.

The device also contains a summing circuit to generate

filtered composite video. Integrated video drivers are

included to facilitate a direct drive to the outside world.

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 use a separate feedback clamp.

The clamp pulse is derived from the Y channel.

The outputs are AC coupled. The Y, C and, CV outputs are

buffered to drive 2VP-P into a 150Ω load (1VP-P into a

doubly terminated 75Ω coax load) with up to 35pF of load

capacitance at the output pin. The Y, C, and CV channels

have a gain of approximately 2 (6dB) with 1VP-P input

levels. There is an option for the video output to be DC

coupled which limits the drive output to one output on each

channel.

1 YIN

SYNC STRIP, REF,

AND TIMING

6dB

YOUT 8

2

DNC

gM

1V

(Do Not Connect)

3

GND_VIDEO

FMS6410

4 CIN

gM

1V

6dB

7

VCC_VIDEO

CVOUT 6

COUT 5

REV. 2a February 2004

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