1.8V Oscillators Enable Low-Cost EMI Reduction
Saelig Co. Inc.
April 10, 2014
Employing spread spectrum (dithered) techniques to reduce electromagnetic interference (EMI) by as much as 15 dB, the Euroquartz’ 18HM series oscillators operate from a supply voltage of 1.8V. They are available in three standard surface-mount packages: 3.2 mm x 2.5 mm, 5 mm x 3.2 mm, and 7 mm x 5 mm. The oscillators are drop-in replacements for standard clocks. Specifications include a frequency range from 12.5 MHz to 42 MHz, CMOS output logic, DC input voltage of 1.8V ±0.15V, frequency stability options of ±25 ppm, ±50 ppm, and ±100 ppm for commercial (0 to +70°C) and industrial (-40°C to +85°C) devices, rise/fall times of 2.5 ns maximum, 15 pF load, and a start-up time of 2ms typical. Duty cycle is 50% ±10%, standard, cycle to cycle jitter is ±100 ps maximum, and ageing is ±5 ppm/year maximum at 25°C. For more info, visit http://www.saelig.com/category/MFR00035.htm
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