AMCC Introduces 2.5 Gbps Sonet OC-48 Clock and Data Recovery Device Designed to Operate Without an External Reference Clock.

SAN DIEGO--(BUSINESS WIRE)--Dec. 14, 1998--

New Device Utilizes a Self-Acquisition Phase Locked Loop (PLL) to

Reduce Cost and Real Estate, Optimizing Optical Module Applications

Applied Micro Circuits Corp. (AMCC)(Nasdaq:AMCC), a leader in high-bandwidth silicon connectivity solutions, today announced the S3047, a SONET/SDH/ATM OC-48 2.5 Gbps Clock and Data Recovery (CDR) device capable of operating without an external reference clock.

At half the size and a third the cost of competitive alternatives, this solution is designed to meet and exceed the specialized needs of optical module manufacturers. The S3047 is fabricated in AMCC's proprietary Micropower bipolar process and complies with ANSI, Bellcore and ITU-T specifications for jitter tolerance, jitter transfer and jitter generation.

Using a self-acquisition phase locked loop to eliminate the need for an external reference clock, the S3047 is targeted for use by designers of optical modules and Dense Wave Division Multiplexing (DWDM) applications. In addition to offering substantial cost and real estate benefits, the chip also provides the industry's best combination of jitter performance, power consumption and operating temperature range. The attached diagram illustrates a typical networking application using the S3047.

"The S3047 provides an invaluable solution by reducing real estate and component cost for applications which do not otherwise require the use of an external reference clock," said Ken Prentiss, AMCC's product marketing manager for SONET/SDH/ATM. "The S3047 exemplifies AMCC's commitment to leading the cost/performance curve."

The S3047 supports clock recovery for OC-48 scrambled Non-Return to Zero (NRZ) data, and utilizes an on-chip PLL consisting of a phase detector, loop filter, and Voltage Controlled Oscillator (VCO). The phase detector compares the phase relationship between the VCO output and serial data input, and the loop filter converts the phase detector output into a smooth DC voltage. The VCO frequency is then varied by this DC voltage. A lock detect function is incorporated to monitor the integrity of the serial data inputs from the S3047.

Pricing and Availability

Samples of the S3047 are available immediately, with production release scheduled for Q1, 1999. The S3047 is priced at $145 in quantities of 100, and is packaged in a 32-pin LLCC that measures 7mm (0.27 in.) square.

AMCC is a premier supplier of high-bandwidth silicon connectivity for the world's communication infrastructure. The company utilizes its world class expertise in mixed-signal design and multiple silicits products, write: Marketing Communication Department, AMCC, 6290 Sequence Drive, San Diego, Calif. 92121-4358; or call 1-800-755-AMCC (800/755-2622) or 619/450-9333; or fax [phone]; or email [e-mail]; or visit our website atents; fluctuations in manufacturing yields and inventory levels; changes in product mix; the Company's abilimer's products; the timing of depreciation and other expenses to be incurred by the company in connection with the expansion of its existing manufacturing facility and iperty; costs associated with compliance with applicable environmental regulations; general semiconductor indered trademark of Applied Micro Circuits Corp.