DECEMBER 21, 2006 -- Micrel Inc. (search for Micrel) has released a series of new AnyRate and single-rate clock and data recovery (CDR) ICs.
The AnyRate devices are the SY87813L, SY87701AL, and SY87700AL; the single-rate devices are the SY69753AL and the SY69754AL. All are low-power devices that feature 30 percent less Icc with improved jitter performance over previous versions.
The ICs are part of the company's expanding family of CDR ICs and are aimed at PON and SONET/SDH/ATM applications, as well as Ethernet media converters and proprietary architectures up to 1.3 Gbits/sec. All of the chips are fully released to production. Pricing starts at $11.36 for the single-rate products and $17.25 for AnyRate devices in 1K quantities.
"Micrel's new clock and data recovery solutions are low-power, improved jitter performance alternatives for today's demanding SONET/SDH/ATM applications," noted Thomas S. Wong, vice president of Micrel's high bandwidth product group. "As a result of the power reduction and improved jitter performance, greater system performance and reliability can be realized."
The SY69753AL, SY69754AL, SY87813L, SY87700AL, and SY87701AL feature data and clock retiming with a reference training loop. Clock recovery and data retiming are performed by synchronizing the on-chip VCO to the incoming data stream. The VCO center frequency is then controlled by the reference clock frequency and the selected divide ratio. This feature reduces the acquisition lock time tremendously. The highest acquisition time for these devices is only 15 µsec.
The AnyRate IC family also features a 3.3-V power supply and is SONET/SDH/ATM compatible. Clock and data recovery speeds are from 32 to 208 Mbits/sec for the SY887700Al and 28 to 1,300 Mbits/sec for the SY87813L/SY87701AL. Among the single-rate ICs, SY69753AL has a speed of 125 to 155 Mbits/sec and the SY69754AL has a speed of 622 Mbits/sec.
These chips are also recommended replacements for Micrel's SY69753L, SY87700L/V, and the SY87701L/V ICs. They also offer selectable reference frequencies and differential PECL high-speed serial I/O. The ICs are available in 32-pin EPAD TQFP packaging and are guaranteed over the full industrial temperature range of -40°C to +85°C.
Visit Micrel