Low phase noise TCXO

February 27, 2013 // By Jean-Pierre Joosting
IQD’s IQXT-60 series temperature compensated crystal oscillator (TCXO) offers excellent phase noise performance in a miniature low height package. It boasts typical phase noise figures of -63 dBc/Hz at 10 Hz and -161 dBc/Hz at 100 kHz coupled with a low current consumption of around 5.0 mA.

Phase noise performance is increasingly critical for applications delivering fast data transfer such as GPS, GSM, WCDMA and WiMAX as well as a very wide range of portable applications.

Housed in a miniature 3.2 x 2.5mm ceramic package measuring only 1.0mm high, the TCXO is available at any frequency from 4.0 MHz to 54.0 MHz; this is exceptionally wide for a TCXO and obviates the need for external dividers or multipliers in many applications. The frequency stability of ±2.5 ppm over the operating temperature range of –30 to +75°C and frequency tolerance of ±0.5 ppm matches existing industry standards.

The IQXT-60 series has a HCMOS output capable of driving 15 pF whilst operating from a standard 3.3, 2.8 or 2.5 V power supply.