Euroquartz has added a series of low EMI oscillators to its EQHM family. The EQHM53 series oscillators are housed in a 5 x 3.2mm SMD package and offer up to -15dBc EMI reduction. Operating from a 3.3V supply, EQHM53 series oscillators are available covering a frequency range from 6 to 160MHz and are drop-in replacements for standard 5 x 3.2mm SMD packaged devices. EQHM series oscillators reduce EMI radiation in electronic systems at its main source, namely the clock oscillator itself. The oscillators use spread spectrum technology (SST) whereby the output frequency is modulated by a low frequency carrier spreading the peak energy of the output frequency and its harmonics over a wider bandwidth. By suppressing EMI at its source, EQHM53 eliminate the need for many expensive EMI protection aids such as PCB groundplanes, metal shielding, ferrite beads, RF gaskets and EMI filters. Specifications include "high" output voltage of 2.4V minimum, "low" output voltage of 0.4V maximum, output load of 10LSTTL gates or 15pF and operating temperature from -40 to +85 deg C for industrial versions and 0 to 70 deg C for commercial types. EQHM53 deliver duty cycle of 45/55, rise/fall times of 5ns maximum (1.5ns typical), current consumption of 15 to 45mA (frequency dependent) and peak frequency reduction of 10 to 16dB for 3rd to 19th odd harmonics. Pin 1 options include modulation on/off, tri-state for all outputs and power down. Ageing is ±5ppm/year maximum while standard jitter is typically 250ps.