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Clock oscillator performs better than tuning fork crystals

Posted: 20 Jan 2003 ?? ?Print Version ?Bookmark and Share

Keywords:em microelectronics? em7602? clock oscillator? tuning fork crystal? clock generator?

EM Microelectronic-Marin SA has released the EM7602 32.768kHz clock oscillator, which is claimed to exhibit three times better thermal drift than conventional tuning fork crystals available in the market today.

The 4-pin device has a 3.6-by-8mm footprint and consists of a patented torsional tuning fork crystal and a low-power IC. The device also exhibits improved oscillator stability and low power consumption.

It is rated for operation over the 1.8V to 3.6V voltage range and the -40C to 85C temperature range. The device has a temperature drift of -0.012ppm/C? and draws 6?A at 3V.

The EM7602 is used as a general purpose clock generator in digital systems and is suited for electricity metering and automotive applications. It is also sold to component manufacturers in a chipset as an input clock driver for EM Real Time Clocks, to be used instead of quartz when better thermal stability is needed or as an add-on circuit to other microcontroller manufacturers.





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