FMS6417A Rev. 2A

9

www.fairchildsemi.com

General Description

The FMS6417A offers comprehensive filtering for set top box or

DVD applications. This part consists of a triple 6th order filter

with selectable 30MHz or 8MHz frequencies and a dual filter for

filtering Y,C with a composite summer and a modulator channel

with sound-notch and FCC group delay compensation. The

modulator provides sound-notching and FCC group delay

compensation for NTSC. 2-to-1 multiplexers are provided on

the triple filters as well as provisions for auxiliary inputs to the

composite channel. The triple filters are intended for either YUV

or RGB signals. All channels accept DC coupled ground-refer-

terminated loads. The low-pass filters are powered by 3.3V and

the modulator and outputs by 5.0V.

The FMS6417A is a next generation filter solution from Fairchild

Semiconductor, addressing the expanding filtering needs for set

top boxes, and DVD players. The product provides selectable fil-

tering from 30MHz or 8MHz on the RGB channels. Thus, the

FMS6417A addresses the requirement for a single set top box

to be compatible with a variety of resolution standards. Addi-

tionally, the product provides additional filters for Y, C, CV, and

modulator outputs. Multiplexers on the RGB and CV channel

provide further flexibility.

For DVD applications, the product provides filtering and output

drive amplification for 7 channels of outputs. These include R,

G, B, Y, C, CV, and modulator outputs.

For set top boxes, this product provides for 2 channels of video

to be filtered, as well as the flexibility of selectable high order

filtering for multiple resolution standards. Additional flexibility is

provided by the additional Y,C filterswith composite summers.

All channels provide 6dB gain, accept 1V ground referenced

inputs, and drive AC coupled loads. The filters for the R, G, B, Y,

C, and CV channels are powered from a 3.3V supply and the

modulator channel and outputs from 5V.

The modulator channel has sound-notch and FCC group delay

compensation set for NTSC specifications.