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May 15, 2002
First ITU V.90 Compatible DAA in Low Profile PLCC
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Xecom has announced a new single component DAA module which meets the requirements of the International Telecommunications Union's recently adopted V.90 standard for 56k bit per second (bps) modem interoperability. The module is available in the popular, low-profile 68 pin PLCC outline, consuming less than one square inch of board space. This product provides a simple, complete, high performance telephone line interface for embedded modems or other telephone line-connected functions in OEM equipment designs.

High Performance The XEV90 supports all analog modem speeds up to and including ITU V.90 compliant 56K modulation schemes. Xecom engineers optimized all aspects of the DAA design to achieve this outstanding performance. The XEV90 furnishes a typical total harmonic distortion less than -84 dB throughout the 4000Hz voice band. Xecom's comparative throughput tests show the XEV90 outperforms the discrete DAA's commonly used in 56K modems. Compact Packaging The XEV90 represents the latest extension of Xecom's unique Slim-Link PLCC Family.

This family of integrated modular DAA products provides the first single-component telephone line interfaces available in PLCC packaging. This is achieved in a 68 pin outline measuring 0.952" x 0.990". The XEV90 expands the appeal of this family by compressing the overall height of the package from 0.290 inches to 0.170 inches, making it ideal for compact, thin profile card designs.

This reduction in component height is made possible by Xecom's proprietary low-profile,high performance transformer design. Benefits for High Volume Assembly The Slim-Link PLCC package delivers important advantages for high-volume DAA users. The modified PLCC package replaces twenty- five to thirty discrete parts with a single, easily handled component.

The Slim-Link PLCC utilizes a standard 68-pin PLCC outline with a simplified 18-pin configuration. The resulting package fits precisely into a 68-pin PLCC carrier. This standard fit enables automated handling by pick and place equipment and eliminates the need to mount through-hole components to implement the modem function. Lowest Component Count Xecom's modular DAA's provide the lowest component count solution for a complete telephone line interface, significantly below other "solid-state" optically or capacitively coupled solutions.

Xecom's proprietary transformer technology allows the simplicity and high performance of transformer coupled DAA design without the bulk and handling issues associated with discrete designs. The complete 56k bps modem interface can be mplemented with the XEV90 and only five external components*.

This feature dramatically lowers the purchasing, inventory, assembly, and testing costs of embedded modems and other phone line-connected equipment. Applications Applications for the XEV90 DAA include modem designs in portable and hand-held industrial equipment, remote process monitoring and control systems, portable data collection terminals, laptop and palm-sized computers, and specialized Internet/Intranet appliances.

All types of miniaturized, mobile, and portable equipment will benefit from the compact, surface mount design. Slim-Link Background The Slim-Link PLCC family breaks new ground in the packaging and performance of DAA's. Originally introduced in 1997, the Slim-Link PLCC family offered the world's first complete single-component DAA. Other models in the Slim-Link PLCC package include the XE014J and XE056J.

Other specialized and international versions are now in design. Price and Availability The XEV90 available now through authorized Xecom representatives. Initial pricing is set at $7.95 at 100k pc quantities.

Samples can also be ordered directly on the Xecom website at www.xecom.com. The website also provides data sheets, a complete product selection guide, company information and a directory of authorized representatives and distributors.

Notes: *Four passive modem interface components plus MOV. Supplementary surge or EMI protection may be required for the specific equipment appli- cation.

See the XEV90 data sheet for details.

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