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Clock generator synthesizes at any rate, output

Austin, Tex.—Silicon Laboratories Inc. has developed a clock generator dubbed the Si5338 that is capable of synthesizing any frequency from 0.16 to 350 MHz and select frequencies to 700 MHz on each of the device's four differential outputs.

At one picosecond rms random jitter typical, the Si5338 is able to simultaneously generate low jitter clocks for a wide variety of ICs, including processors, FPGAs, ASICs, memory and physical layer transceivers. The device generates four differential or eight single-ended outputs per device, eliminating the need for external clock distribution buffers. In addition to frequency, each output clock is independently configurable in terms of supply voltage (1.5V, 1.8V, 2.5V, 3.3V) and signal format (LVPECL, LVDS, CMOS, HCSL, SSTL, HSTL).

The Si5338's any-rate, any-output capability simplifies timing architectures by replacing fixed frequency clock generators, discrete level translators and crystal oscillators with a single device, minimizing cost and real estate and reducing power by 50 percent compared to traditional products, according to the company. To simplify board-level test, the Si5338 includes a frequency margining feature that enables the frequency of each output clock to be varied dynamically over the 0.16 to 350 MHz range, eliminating discrete XOs and making it easier for hardware designers to guarantee consistent, reliable system operation over temperature and voltage.

Pricing: Starts at $9.31 in 10,000 piece quantities and is dependent on output frequency.

Availability: Now in a space-saving 24-lead 4x4mm QFN package.

For more information: Click here.

Silicon Laboratories Inc., www.silabs.com

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