ADA4420-6

低成本6声道HD / SD视频滤波器 Low Cost 6-Channel HD/SD Video Filter

Product Details

The is a low cost video reconstruction filter specifically designed for consumer applications. It consists of six independent sixth-order Butterworth filters/buffers, three for standard definition Y/C or CVBS and three for high definition component signals YPbPr or RGB.

The ADA4420-6 operates from a single 5 V supply and has a low quiescent current of 32 mA, making it ideal for applications where power consumption is critical. A disable feature allows for further power conservation by reducing the supply current to less than 8 μA typical when the device is not in use.

Each channel features a transparent sync tip clamp, allowing ac coupling of the inputs without requiring dc restoration.

The output drivers on the ADA4420-6 have rail-to-rail output capabilities with 6 dB gain. A built-in offset of 250 mV allows the outputs to be dc-coupled, eliminating the need for large coupling capacitors. Each output is capable of driving two 75 Ω doubly terminated cables.

The ADA4420-6 is available in a 16-lead QSOP and operates in the extended industrial temperature range of −40°C to +85°C.

**Applications**

* Set-top boxes

* DVD players and recorders

* HDTVs

* Projectors

* Personal video recorders

### Features and Benefits

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Sixth-order filters

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Transparent input sync tip clamp

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−1 dB bandwidth of 26 MHz typical for HD

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HD rejection @ 75 MHz: 48 dB typical

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NTSC differential gain: 0.19%

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NTSC differential phase: 0.76°

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Rail-to-rail outputs

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Low quiescent current: 32 mA typical

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Disable feature

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Output dc offset

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