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Crystal oscillators support up to 700MHz frequency

Posted: 19 Nov 2013 ?? ?Print Version ?Bookmark and Share

Keywords:Seiko Epson? crystal oscillator? PLL? Internet of Things?

Seiko Epson Corp. has announced a family of small, accurate, high-frequency differential-output PLL-based crystal oscillators that support frequencies up to 700MHz. In addition to the SG3225, whose tiny 3.2 x 2.5mm footprint will enable electronics makers to significantly cut the size of assembled circuit boards, the product family also includes the SG5032 and SG7050, which come in 5 x 3.2mm and 7 x 5mm sizes, respectively.

Networking, consumer and industrial electronic systems must all handle higher data rates in less space, often without forced-air cooling. As a result, crystal devices must operate at higher frequencies with better accuracy and lower jitter and these devices must be smaller and operate over a wide temperature range. These needs cover a wide field of applications from consumer, networking, wireless base stations, blade servers and the growing Internet of Things (IoT), detailed the company.

PLL-based crystal oscillators

Differential-output PLL-based crystal oscillators (From the left, the SG3225, SG5032 and SG7050).

In order to meet these market demands, Epson combined its miniature quartz crystals with PLL ICs to develop this family of differential-output PLL-based crystal oscillators. With a frequency tolerance of ±20 x 10-6 and low phase jitter of 270fs, these oscillators offer outstanding accuracy and stability and have a wide operating temperature range (-40°C to 85°C). The SG3225, SG5032 and SG7050 are available in two output types, LV-PECL and LVDS.

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