3EQHM53

EURO QUARTZ 5 x 3.2 x 1.2mm SMD - Group 'R' Provides up to 15dB reduction in system EMI ‘Drop-in’ replacement for standard clocks Choice of modulation rate and spread Miniature package: 5.0 mm x 3.2 mm x 1.2mm 3EQHM53 Low EMI Oscillator Page 1 of 2 In electrical systems the principal cause of electromagnetic interference (EMI) is the system clock oscillator. Traditional methods of 'patching-up' systems with too high a level of EMI is to use ferrite beads, filters, ground planes, metal shielding and similar costly methods, However, the most efficient and economic method to reduce EMI is to reduce it at source: replace the system clock ocillator with a low EMI clock oscillator. Compared with conventional clock oscillators, Spread Spectrum (Dithered) Oscillators can reduce EMI by as much as 15dB. The part is a 'drop-in' replacement for a standard clock oscillator hence there is no requirement to re-design existing PCBs. DESCRIPTION EQHM53 series low EMI oscillators can reduce system EMI by 15dB. The oscillators are a ‘drop-in’ replacement for standard oscillators. EMI reduction is achieved by the use of Spread Spectrum Technology whereby the mode energy is spread over a wider bandwidth. The modulation carrier frequency, operating in the kHz region, makes the process transparent to the oscillator frequency. There is a choice of modulation rates and spread to suit application requirements. SPREAD SPECTRUM TECHNOLOGY Unlike a conventional clock oscillator, in a Spread Spectrum ...