Integrated Video Filter with Selectable Cutoff

Frequencies for RGB, HD/SD Y, C, and CV

ADA4410-6

Rev. B

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FEATURES

Sixth-order filters with selectable cutoff frequencies

36 MHz, 18 MHz, 9 MHz

Many video standards supported

RGB/YPbPr/YUV/SD/YC/CV

Ideal for resolutions up to 1080i

−1 dB bandwidth of 30 MHz for HD

2:1 multiplexers on all inputs

Selectable gain: ×2 or ×4

DC output offset adjust: ±0.5 V, input referred

Excellent video specifications

NTSC differential gain: 0.11%

NTSC differential phase: 0.25°

Low input bias current: 6.6 μA

Wide supply range: +4.5 V to ±5 V

Rail-to-rail output

Typical output swing of 4.5 V p-p on single 5 V supply

Disable feature

APPLICATIONS

Set-top boxes

DVD players and recorders

HDTVs

GENERAL DESCRIPTION

The ADA4410-6 is a comprehensive integrated filtering solution

that is carefully designed to give designers the flexibility to

easily filter and drive many types of video signals, including

high definition video. In the RGB/component channels, the

cutoff frequencies of the sixth-order filters can be selected by

two logic pins to obtain four filter combinations that are tuned

for RGB, high definition, and standard definition video. Cutoff

frequencies range from 9 MHz to 36 MHz.

The ADA4410-6 also provides filtering for the legacy standard

S-video and composite video signals. With a differential gain of

0.11% and a differential phase of 0.25°, the ADA4410-6 is an

excellent choice for any composite video (CV) application.

The ADA4410-6 offers gain and output offset voltage

adjustments. With a single logic pin, the gain of the part can be

selected to be ×2 or ×4. Output offset voltage is continuously

adjustable over an input-referred range of ±500 mV by applying

a differential voltage to an independent offset control input.

FUNCTIONAL BLOCK DIAGRAM

36MHz,

18MHz,

9MHz

36MHz,

18MHz,

9MHz

36MHz,

18MHz,

9MHz

9MHz

9MHz

Y1/G1 IN

Y2/G2 IN

×2

×4

Y/G OUT

Pb1/B1 IN

Pb2/B2 IN

×2

×4

Pb/B OUT

Pr1/R1 IN

Pr2/R2 IN

LEVEL1

DC

OFFSET

HD INPUT SELECT

LEVEL2

CUTOFF SELECT

GAIN SELECT

×2

×4

Pr/R OUT

Y1 IN

Y2 IN

×2

×4

Y OUT

C1 IN

C2 IN

SD INPUT SELECT

DISABLE

×2

×4

C OUT

×2

CV OUT

2

ADA4410-6

Figure 1.

The ADA4410-6 offers 2:1 multiplexers on its inputs that can be

used in applications where multiple sources of video exist.

The ADA4410-6 can operate on a single +5 V supply as well as

±5 V supplies. Single-supply operation is ideal for applications

where power consumption is critical. The disable feature allows

for further power conservation by reducing the supply current

to typically 15 μA when a particular device is not in use.

Dual-supply operation is best for applications where the

negative-going excursions of the signal must swing at or below

ground while maintaining excellent video performance. The

output buffers have the ability to drive two 75 Ω doubly

terminated cables that are either dc- or ac-coupled.

The ADA4410-6 is available in a 32-lead LFCSP and operates in

the extended industrial temperature range of −40°C to +85°C.