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Clocking IC geared for wired comms systems

Posted: 05 Sep 2012 ?? ?Print Version ?Bookmark and Share

Keywords:LMK04906? CDCM6208? 10GbE? FCoE? clock jitter cleaner?

Texas Instruments Inc. (TI) has uncloaked what it boasts as the industry's most flexible and highly integrated clock jitter cleaner/multiplier for wired communications and test and measurement applications. The LMK04906 offers three redundant inputs with a holdover feature and seven programmable outputs, noted the company.

According to the company, the device touts a flexibility that allows designers to eliminate external components such as oscillators and clock buffers, significantly cutting BOM cost and board space. In addition, its RMS jitter of 100fs from 12kHz-20MHz and noise floor of -160dBc/Hz at 156.25MHz enable the LMK040906 to improve signal integrity in high-speed data communications systems such as 10GbE, FC, FCoE and SAS/SATA, TI added.

TI has also introduced the CDCM6208 clock synthesizer and jitter cleaner, which offers similar integration and flexibility for wireless base stations, pico and femto cells, line cards and handheld medical equipment. It provides eight low-jitter clock outputs, pin-control mode, flexible output voltages and a fractional divider.

TI's clock design tool supports the LMK04906, aiding designers with part selection, loop filter design and simulation of timing device solutions. The LMK04906 evaluation module (EVM) and IBIS model are available. Two CDCM6208 EVMs, EVM control GUI and IBIS model are also available.

The LMK04906 is available in a 64-pin, 9 x 9mm QFN package for a suggested retail price of $6.49 in 1,000-unit quantities. The CDCM6208 is available in a 48-pin, 7 x 7mm package for a suggested retail price of $6.50 in 1,000-unit quantities.

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