Low phase noise crystal oscillators operate in automotive temperatures
Surface mount, low phase noise crystal oscillators for automotive applications have been released by frequency control specialist, Euroquartz. The XOY series has a wide operating temperature range of -40 to +125 degrees. They also have phase noise performance of -155dBc/Hz at 10kHz and -160dBc at 100kHz offset. Femtosecond integrated phase jitter is 150fs typical (12kHz to 20MHz) and the oscillators are available in frequencies from 1.25 to 50MHz.
The automotive grade components are housed in a 3.2 x 2.5mm surface mount package. Supply voltages of 1.8, 2.5 and 3.3V (±10 per cent) are available.
Additional specifications include 15pF LVCMOS load, rise time of 10ns (maximum), start-up time of 5ms (maximum) and tri-state function as standard. Current consumption is 2.0 to 6.0mA (maximum) depending on supply voltage and frequency. Ageing is ±2ppm (maximum) for the first year.
Another characteristic is that the solder profile is 260 degrees C (maximum).
Euroquartz is an independent UK-based manufacturer and supplies quartz crystals, oscillators, filters and frequency-related products to the electronics manufacturing industry worldwide.
The company is AS9100 registered and designs and manufactures a comprehensive range of frequency control components for a range of customers in the defence and aerospace, communications, general electronics, computing, control systems and petrochemical industries.