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Clock w/VCXO chip is cost-effective for SONET systems

Sunnyvale, Calif.&#8212Maxim's MAX9450/MAX9451/MAX9452 clock generators integrate a VCXO, PLL, and buffer to provide a compact and cost-effective one-chip solution for the timing chain in SONET and SDH data-communications systems and base-station applications.



The MAX945x, which can be driven from a 8 kHz to 500 MHz input (reference clock), drives outputs up to 160 MHz, depending on the crystal frequency. The chip features low-output jitter&#8212less than 0.8 ps rms (in a 12 kHz to 20 MHz band) and phase-noise attenuation is greater than -130 dBc/Hz at 100 kHz. The device is available with LVPECL (MAX9450), HSTL (MAX9451), and LVDS (MAX9542) outputs, respectively.

Click here for the device datasheet. The MAX945x, rated for operation over -40 to +85&degC and available in a 32-pin TQFP package, is priced starting from $10.85 (10,000-up, FOB USA).

Maxim Integrated Products , 1-800-998-8800, www.maxim-ic.com

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