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Filters simplify video signal conditioning designs

Norwood, Mass. — Analog Devices Inc. today introduced a family of video filters aimed to ease analog video signal conditioning designs in HDTV, personal video players and DVD recorders.

Able to condition high definition (HD) as well as standard definition (SD) video signals, the industry's first monolithic IC video filter devices replace dozens of passive components, amplifiers, and muxes with a single chip, said Bob Esdale, product line director, high speed linear products, Analog Devices. “This saves designers development time and can reduce board space by over 90 percent,” he said.

The family includes the ADA4410-6, ADA4411-3, and the ADA4412-3, which include adjustable six-pole filters and buffers. The ADA4410-6 is the most highly integrated of the family with six channels to process any video standard: HD, SD, S-video or composite. It also includes 2:1 multiplexers on each input and adjustable offset and selectable gain. The ADA4411-3 is a three-channel version of the ADA4410-6. The ADA4412-3 is also a three- channel device with adjustable gain and offset. Each device features single and dual supply operation, can be AC or DC coupled on the input or output, and has rail-to-rail outputs.

The ADA4410-6 is available in full production quantities now in a 5mm x 5mm, 32-lead chip scale package and is priced at $1.80 in 100,000-piece quantities. The ADA4411-3 and ADA4412-3 are available in a QSOP and are available in sample quantities now. Both will be available in full production quantities in the summer of 2005. The 24-lead ADA4411-3 is available in 100,000-piece quantities for $1.49 and the 20-lead ADA4412-3 is available in the same quantities for $1.29. Click here for the ADA441x data sheets.

Analog Devices , 1-800-262-5643, www.analog.com.

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