Integrated Video Filter with Selectable Cutoff Frequencies for RGB, HD/SD, Y, C, and CV

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.

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.

Applications

* Set-top boxes

* DVD players and recorders

* HDTVs

* 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