IQD has launched a range of quartz crystals that can operate in the fundamental mode up to 200 MHz. The 
Source: IQDquartz crystals are housed in an hermetically sealed 2.5 mm x 2.0 mm x 0.6 mm (IQXC-152) and 2.0 mm x 1.6 mm x 0.5 mm (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 MHz to 200 MHz, the frequency tolerance can be as low as ±30 ppm and the stability is also ±30 ppm over the full industrial operating temperature range of -40° C to 85° C with the capacitance load ranging from 8 to 30 pF.
The crystals enable 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, 2.4 GHz, which cuts down on the jitter or phase noise in the circuit.
Packaging options are tape and reel or cut tape, and detailed data sheets are available at IQD.
