It has been announced that IQD has launched a range of quartz crystals which can operate in the fundamental mode up to 200MHz. The quartz crystals are housed in a hermetically sealed 2.5x2.0x0.6mm (IQXC-152) and 2.0 x 1.6 x 0.5mm (IQXC-153) ceramic four pad package, two of the pads are grounded to the metal lid to improve the EMI.
In the higher frequency range, 70 to 200MHz, the frequency tolerance can be as low as ±30ppm and the stability is also ±30ppm over the full industrial operating temperature range of -40 to +85°C with the capacitance load ranging from eight to 30pF.
The IQXC-152 and IQXC-153 enables design engineers to use higher frequencies in the fundamental mode which eliminates the need to use a PLL or a tank circuit picking up the third, fifth or seventh harmonics. A higher starting frequency can also be used when looking to generate for example 2.4GHz which cuts down on the jitter/phase noise in the circuit.