Date: 12th May 2011
80 to 220 MHz frequency range VCXOs for
telecom and embedded apps
SiTime Corporation has introduced the SiT380X family of
MEMS-based Voltage Controlled Oscillators (VCXOs) for telecom,
networking and embedded applications. The SiT380X family
consists of the SiT3808 and SiT3809 VCXOs, which offer sub-picosecond
jitter as well as 10 times better pull range and linearity
than quartz VCXOs, says SiTime. These devices come with
programmable features such as frequency, voltage, stability,
pull range and drive strength. SiTime said it can deliver
customized samples in 48 hours and production quantities
in 3 weeks. SiT380X family offers pin compatibility with
existing quartz-based solutions.
The SiT380X family consists of two products: The SiT3808,
which operates between 1 and 80 MHz; and the SiT3809, which
operates from 80 to 220 MHz.
Both devices have the following features:
1.Any frequency within the operating range with best-in-class
6 decimal places of accuracy
2.Widest pull range, up to ± 1600 PPM. Industry-compatible
pull ranges up to ± 200 PPM are also available
3.Best linearity, less than 1%, which enables faster system
synchronization
4.Superior tuning slope (Kv) consistency minimizes variation
in system PLL performance
5.Industry-leading frequency stability, as low as ±
10 PPM for enhanced reliability
6.100% drop in replacement for existing solutions, available
industry standard 4-pin 3225, 6-pin 5032 and 6-pin 7050
packages
7.Programmable drive strength for best EMI reduction
8.Industrial (-40 to +85 °C) and commercial temperature
(-20 to +70 °C) operation
1.8V and 2.5-3.3V operation
"SiTime is using silicon technology to drive the electronics
industry's transition from passive timing components to
active circuits using MEMS," said Piyush Sevalia, vice
president of marketing at SiTime. "The Silicon-based
SiT3808 and SiT3809 VCXOs offer unique features that are
10 times better than quartz, such as ± 1600 PPM pull
range, 1% linearity and any frequency between 1 and 220
MHz. These features, coupled with unprecedented flexibility,
shortest lead time and best reliability, accelerate the
move towards SiTime's revolutionary technology."
Samples of the SiT3808 and SiT3809 will be available in
early June 2011 with production in Q3, 2011.
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