Euroquartz – New low-EMI oscillators are drop-in replacements for standard clock oscillators (HM572 'N')

A new range of low-EMI oscillators, which are a ‘drop-in’ replacement for standard clock oscillators, has been unveiled by Euroquartz.

The new low-EMI oscillator range offers a low-cost solution to expensive EMI problems. The oscillators are seen as ideal for use in a wide range of applications and provide an optimum solution to EMI by approaching the problem at source – the system clock oscillator.

The low EMI oscillators, designated HM572 ‘N’ series, use spread spectrum (dithered) techniques to reduce EMI emissions from the oscillator by 8 to 15dB. In most electronic systems, the principal cause of EMI is the system clock so it makes sense to reduce this at source rather than relying on traditional methods of patching up systems with ferrite beads, ground planes, metal shielding and similar costly additions. Spread spectrum technology spreads the mode energy over a wider bandwidth and, as the low EMI oscillator spread spectrum technique operates in the kHz region, the process is transparent to the oscillator operating frequency.

The low EMI oscillators are housed in standard 7mm x 5mm x 1.4mm surface mount packages, says the company.