Electronic Design

Clock Generator Hacks Down Parts Count And BOM

In addition to claims of the industry’s best jitter performance, the LMK03806 clock generator  promises to trim component counts by as much as 80% percent and bill of materials (BOM) cost up to 50%. The device simultaneously synthesizes seven independent frequencies on 14 outputs. With an output spanning 2.37 MHz to 2.6 GHz, it supports all components on a line card. Features include a high-frequency VCO and programmable output dividers, jitter figure below 50 fsrms at 312.5-MHz out, a crystal interface, and programmable LVDS, LVPECL and LVCMOS. A companion, the LMK00301 differential fanout buffer/level translator accepts single-ended, differential, or crystal input and produces 10 buffered copies of the input clocks at frequencies up to 3 GHz in LVDS, LVPECL, or HCSL format. It features a 51 fsrms jitter at 156.25 MHz, and less than 30 fsrms at 312.5 MHz when paired with the LMK03806. Available in a 64-pin, 9 mm x 9 mm LLP, price for the LMK03806 is $7.95 each/1,000. The LMK00301 in a 48-pin, 7 mm x 7 mm LLP costs $2.95 each/1,000. TEXAS INSTRUMENTS INC., Dallas, TX. (800) 477-8924.

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