Analog Devices Launches New Clock And Data Recovery ICs For Optical Networking Systems
ADI's new family of CDRs eases design challenges for fixed rate, multi-rate and continuous- tuning data communications and telecom applications.
Norwood, MA -- Analog Devices is introducing a new family of continuous-tuning clock and data recovery (CDR) integrated circuits (ICs) for fixed-rate, multi-rate and continuous-tuning data communications and telecom applications. The pin-compatible ADN2813, ADN2814, ADN2815 and ADN2816 family of CDRs eases optical network design by providing the industry's widest performance margin beyond SONET jitter specifications. Offered in a variety of price and power points to suit the entire range of networking applications at 1.25 Gbps (gigabits per second) and below, the new devices are pin-compatible with ADI's ADN2812, the industry's first fully automatic continuous-tuning CDR, introduced in 2003.
Unlike other CDR solutions that are designed for specific data rates or that require external control to identify a specific frequency or band of frequencies, the continuous-tuning capabilities of the ADN2813, ADN2814, ADN2815 and ADN2816 enable the devices to recover any incoming data pattern without external control or the use of a reference clock, allowing equipment developed today to accommodate changing bit rate requirements in the future. For optical engineers, this means they can develop a single design that can be standardized for use in multiple systems.
The new family of continuous-tuning CDRs provides jitter performance that beats the SONET specifications by more than a factor of three in all categories (jitter generation, jitter tolerance, jitter transfer). Their I²C interface provides access to exclusive features such as data rate readback, which identifies the data rate of the incoming signal. The CDRs operate from a single 3.3 V supply.
The ADN2813 (12.3 Mbps - 1.25 Gbps) and the ADN2814 (12.3 Mbps - 675 Mbps) include a limiting amplifier with 6 mV input sensitivity and slice adjust option, and dissipate 430 mW (typical). When used with a PIN diode and a TIA amplifier, the ADN2813 and ADN2814 can implement a low-cost, low-power fiber optic receiver.
The ADN2815 (12.3 Mbps - 1.25 Gbps) and the ADN2816 (12.3 Mbps - 675 Mbps), optimized for use with optical transceiver modules, include a limiting amplifier with 50 mV input sensitivity and dissipate 380 mW (typical).
The continuous-tuning capabilities of the CDRs, which cover all the standard OC-1/3/12 fixed-rate and multi-rate applications, also make them well-suited for a wider range of networking applications, including Ethernet, WDM transponders, test equipment, backplanes, regenerators/repeaters, broadband cross-connects, routers, multi-service provisioning platforms (MSPP) and next generation SONET applications. The devices can also be used for video applications.
About Analog Devices
Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. Acknowledged industry-wide as the world leader in data conversion and signal conditioning technology, Analog Devices serves over 60,000 customers, representing virtually all types of electronic equipment. Celebrating 40 years as a leading global manufacturer of high-performance integrated circuits used in analog and digital signal processing applications, Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices' common stock is listed on the New York Stock Exchange under the ticker "ADI" and is included in the S&P 500 Index.
Source: Analog Devices