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|ON Semiconductor Introduces PLL Clock Generation IC with Superior
Jitter Performance that Replaces Expensive Crystal Oscillators|
Phoenix, Ariz. – ON
Semiconductor today released the NB4N507A – the first in a series of fully-integrated phase lock loop (PLL) ICs
designed to replace expensive crystal oscillators for clock generation in a wide variety of consumer and networking
applications. A pioneer of Positive Emitter Coupled Logic (PECL) signaling, ON Semiconductor’s latest family of PLL
ICs offers performance compatible to the most widely used crystal oscillators at a fraction of the cost.
applications ranging from VGA graphics cards to Fibre Channel clock generation, the traditional method for
generating the master clock signal has been to implement a single crystal oscillator. Historically, crystal
oscillators have offered better jitter performance than silicon-based devices. These canned oscillators are complex
to manufacture, and so, are relatively expensive and require long lead times – sometimes up to 20 weeks. ON
Semiconductor’s NB4N507A is a high-performance silicon PLL that delivers jitter performance comparable to crystal
oscillators but offers far more design flexibility, a lower overall cost and greatly reduced lead times. With
accuracy of 100 parts per million (ppm), the NB4N507A is a preferable alternative to crystal oscillators with
“ON Semiconductor has developed a superior silicon replacement solution for
crystal oscillators,” said Bill Schromm, ON Semiconductor vice president and general manager of High Performance
Analog products. “Utilizing a fully differential bipolar design methodology, ON Semiconductor’s NB4N507A PLL offers
inherent noise immunity and full industrial temperature operation not obtainable by competitive CMOS PLL clock
About the Device
The NB4N507A generates a clock signal ranging from
50 megahertz (MHz) to 200 MHz via an inexpensive reference crystal. With a maximum root mean square (RMS) period
jitter of less than 10 picoseconds (ps), it delivers half the jitter (or noise) of competitive silicon PLL products.
Because the NB4N507A is fully configurable, it provides true design flexibility. For example, a single device can be
used to generate different frequencies within a system and can be reused on future designs regardless of changes in
timing requirements. In addition, silicon-based ICs like the NB4N507A are inherently much simpler to manufacture
which leads to lower costs and vastly lower lead times.
Package and Price
The NB4N507A is
available in a 16-pin SOIC package and priced at $1.50 per unit in 1,000 unit quantities.
Viernes, 29 Julio, 2005 - 05:41