Euroquartz’s spread spectrum oscillators reduce EMI
A spread spectrum oscillator from Euroquartz is designed as a drop in replacement for standard clock oscillators. The EQHM22 (pictured) reduced EMI by up to 12dB, said the company.
The oscillator reduces EMI at source eliminating the need for traditional methods of combatting interference, such as ferrite beads, ground planes and metal shielding, for example. There is a choice of modulation rate and spread to provide frequencies from 16 to 40MHz. The EQHM22 is supplied in a miniature surface mount package measuring 2.5 x 2.0 x 0.9mm.
Euroquartz will launch the oscillator at the Engineering Design Show (EDS 2023, October 11th and 12th in the Coventry Building Society Arena, Coventry, UK. Visitors will also see new products from Greenray Industries and new reference crystal oscillators from Statek.
The Greenray products include two ranges of temperature-compensated crystal oscillators (TCXO) offering very low acceleration and tight temperature stability, said the company. The T58 and T56 have been developed for use as reference oscillators in timing applications and are housed in a compact, rugged surface mount package, measuring 5.0 x 3.2mm. These new TCXOs offer a choice of CMOS or clipped sinewave output with frequencies between 10 and 52MHz over the industrial operating temperature range -40 to +85 degrees C with ±0.05ppm temperature stability.
Another new Greenray product is a range of crystal oscillators (XO) offering low phase noise and low acceleration sensitivity. These are housed in a compact, rugged package with dimensions of 17.3 x 17.3mm and weigh less than 3g. They are suitable for hand or reflow soldering. The Y1631 XO is RoHS-compliant and offers sinewave output frequencies between 60 and 130MHz over an operating temperature range of -40 to +85 degrees C. The low phase noise at 100MHz nominal frequency ranges from -83dBc/Hz at 10Hz offset to -170dBc/Hz at 1MHz offset. Acceleration sensitivity (worst axis tested at 90Hz, 10g) is 2.0ppb/g as standard. Low noise 0.5ppb/g and ultra-low noise 0.09ppb/g versions are available to order. Shock screening is per MIL-STD-202, Method 213 while random vibration screening is per Method 214.
Finally, a new range of crystal oscillators from Statek, the MTXO tight stability crystal oscillators offer tight frequency stability and are for use in high-reliability applications. They offer fundamental frequencies from 10 to 50MHz with a total frequency tolerance as low as ±5ppm (including first year ageing) over the military temperature range of -55 to +125 degrees C. The company also offers the MTXOHG version, with high shock resistance up to 75,000g. These oscillators are suitable for use in a range of industrial, defence and aerospace-related applications including RF telemetry, master clock, telecommunications, navigation and handheld devices and instrumentation.
Euroquartz is exhibiting at EDS 2023 (11 and 12 October at Coventry Building Society Arena, Coventry, UK) Stand H4.
Euroquartz is an independent UK-based manufacturer and supplier of quartz crystals, oscillators, filters and frequency-related products to the electronics manufacturing industry worldwide. The company is AS9100 registered and designs and manufactures a range of frequency control components for customers in defence and aerospace, communications, general electronics, computing, control systems and petrochemical markets.
