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ADA4420-6

Analog Devices
Part Number ADA4420-6
Manufacturer Analog Devices
Description Low Cost 6-Channel HD/SD Video Filter
Published Dec 5, 2009
Detailed Description Low Cost 6-Channel HD/SD Video Filter ADA4420-6 FEATURES Sixth-order filters Transparent input sync tip clamp −1 dB ban...
Datasheet PDF File ADA4420-6 PDF File

ADA4420-6
ADA4420-6

Overview
Low Cost 6-Channel HD/SD Video Filter ADA4420-6 FEATURES Sixth-order filters Transparent input sync tip clamp −1 dB bandwidth of 26 MHz typical for HD HD rejection @ 75 MHz: 48 dB typical NTSC differential gain: 0.
19% NTSC differential phase: 0.
76° Rail-to-rail outputs Low quiescent current: 32 mA typical Disable feature Output dc offset APPLICATIONS Set-top boxes DVD players and recorders HDTVs Projectors Personal video recorders GENERAL DESCRIPTION The ADA4420-6 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 (YPrPb 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.
FUNCTIONAL BLOCK DIAGRAM INSD1 CLAMP ×1 INSD2 CLAMP ×1 INSD3 DIS CLAMP ×1 INHD1 CLAMP ×1 INHD2 CLAMP ×1 SD ×2 OUTSD1 OUTSD2 SD ×2 OUTSD3 SD ×2 HD ×2 OUTHD1 OUTHD2 HD ×2 INHD3 CLAMP ×1 OUTHD3 HD ×2 ADA4420-6 Figure 1.
07532-001 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 either a 16-lead QSOP or a 20-lead TSSOP, and operates in the extended industrial temperature range of −40°C to +85°C.
Rev.
A Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for...


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