Integrated Triple Video Filter

for High Definition Video

ADA4417-3

Rev. A

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FEATURES

Optimized for high definition video

Sixth-order Butterworth filters

−1 dB bandwidth of 38 MHz

44 dB rejection at 75 MHz

5 ns group delay variation

Fixed throughput gain of ×2

0.06% differential gain

0.21° differential phase

Pin selectable output offset (DCO)

Single-supply operation

3.3 V to 5 V range

Rail-to-rail output

Output ESD protection exceeds 8 kV

Small packaging: 10-lead MSOP

APPLICATIONS

Set-top boxes

HDTVs

Projectors

DVD players/recorders

Personal video recorders

FUNCTIONAL BLOCK DIAGRAM

Y/G IN

×2

Y/G OUT

Pb/B IN

×2

Pb/B OUT

Pr/R IN

DCO

DISABLE

×2

×1

×1

×1

Pr/R OUT

36MHz

36MHz

36MHz

ADA4417-3

Figure 1.

GENERAL DESCRIPTION

The ADA4417-3 is a low cost, fully integrated, video

reconstruction filter specifically designed for consumer high

definition video. With 1 dB frequency flatness out to 38 MHz,

and 44 dB of rejection at 75 MHz, the ADA4417-3 can handle

the most demanding HD video applications.

The ADA4417-3 operates on a single 3.3 V to 5 V supply. It is

well-suited for applications where power consumption is

critical. A disable feature allows for further power conservation

by reducing the supply current to 10 μA (typical) when the

device is not in use. With rail-to-rail output, it can be efficiently

used on a 3.3 V supply, while providing the user with a 2 V p-p

output. The buffers can drive two 75 Ω terminated loads, either

dc- or ac-coupled.

The ADA4417-3 also has an output dc offset function that can

operate in two states. When the DCO pin is tied to VCC, the

video signal at the output is offset by 200 mV. When the DCO

pin is tied to ground, the output dc level follows the input level.

The ADA4417-3 is available in a 10-lead MSOP package and is

rated for operation over the extended industrial temperature

range of −40°C to +85°C.