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Single-chip, triple differential receiver reduces board space by more than half

Norwood, Mass.—The AD8143 is a compact, single-chip solution from Analog Devices Inc. that receives differential signals over a twisted pair cable.

The AD8143 triple differential receiver is primarily designed to receive RGB (red, green, blue) signals with resolutions up to 1600 X 1200; however, it can able be used to receive any other type of differential analog signal or high-speed data transmission.

Compared with multi-chip receivers, the AD8143 reduces board space by up to 60% and lowers costs by as much as 45%, according to the company.

With a common mode rejection ratio of 70-dB at 10-MHz, the AD8143 eliminates the effects of induced electromagnetic interference (EMI) over long cables. The AD8143 converts differential inputs to single-ended outputs, and the wide common mode input range of ±10-V maintains signal integrity in systems where ground potential is different between the drive and receive ends.

In addition to the three differential receivers, the AD8143 includes two auxiliary comparators, which can be used to receive digital signals from the fourth twisted pair of the Category-5 cable, such as keyboard or mouse functions in KVM applications.

The AD8143 complements the company's AD8133 triple differential line driver that is designed to drive RGB signals over Cat-5 cables. See related story below.

Paired together, the AD8143 and AD8133 offer a complete solution for transporting video over twisted pair cable.

The AD8143 triple differential receiver operates over the temperature range of -40° C to +85° C and is available in a 5-mm X 5-mm, 32-pin lead-frame, chip-scale package (LFCSP). It is priced at $2.55 each in 1,000-unit quantities.

For more information, click here: www.analog.com/en/prod/0,2877,AD8143,00.html

Analog Devices Corp., 1-781-329-4700, www.analog.com

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