Q-Tech’s space-qualified MCXOs are the first and only such devices on the market designed to withstand radiation levels of 50kRad(Si) TID. They also offer a minimum single-event latch-up (SEL) of 29MeV-cm2/mg for the QT2020 series and up to 75MeV-cm2/mg for the QT2021 series. Both series consume a maximum of 90mW, which is thirty orders of magnitude lower than comparable oven-controlled crystal oscillators (OCXOs). Meanwhile, these rad-tolerant MCXOs provide ‘OCXO-level’ temperature stability of up to ±10ppb over 0 to +70°C; and in addition to ±20ppb, now offering ±50ppb and ±100ppb stabilities over -40 to 85°C.
Devices in the QT2020 and QT2021 MCXO series are offered with 1PPS input and output, standard frequencies of 10, 20, 30, 40, 50, 60, 80, and 100MHz, as well as a choice of CMOS or Sine Wave logic outputs. Their low phase noise and jitter, along with high shock and vibration tolerance (G-sensitivity of 1ppb/g), make them suitable for a range of applications where smaller ‘SWaP’ (Size, Weight and Power) is desired, or where fast start-up time (1.5s to ±50ppm) and initialisation time (as little as 15s from power on to full ppb performance) are needed to support frequent power cycling. Additionally, the QT2020/2021 series has a small-form-factor package weighing just 50g, versus similar OCXOs weighing 100g or more.
“By expanding the selection of stability levels in our QT2020/QT2021 series to include 50ppb and 100ppb versions, we’re now able to supply our space-qualified MCXOs with shorter lead times – and at lower cost – for the many applications that require their exceptional tight frequency stability performance,” said Scott Sentz, Q-Tech’s Vice-President of Sales and Marketing.
