Simple Packaged Crystal Oscillators
Simple Packaged Crystal Oscillators
IQD’s clock oscillators, also known as simple packaged crystal oscillators (SPXOs), combine a quartz crystal resonator and oscillator circuit in one package. They provide a ready-to-use clock signal for electronic designs, without requiring a separate crystal and oscillator circuit.
Clock oscillators are used in applications including telecommunications, wireless communications, industrial electronics, consumer devices, Ethernet, IoT, wearables, optical networks, audio and multimedia equipment, and test and measurement systems.
IQD offers a broad SPXO portfolio, with frequency, package, output and environmental options that vary by model. Use the product catalogue and individual datasheets to identify a part that meets your design requirements. App Note | Specifying SPXO
Depending on the selected model, IQD SPXOs are available with:
IQD’s stated overall frequency range is 32.768 kHz to 2,200 MHz. Check our online catalogue and datasheets for the frequency, stability, supply voltage, output and temperature specifications available for each part.

Our low power oscillators (from 0.9V) are particularly suited for use in handheld battery operated products owing to their efficient low current draw.
IQXO-691 CMOS, -40 to 85 degC operating temperature. Available in 2.5 x 2.0, 3.2 x 2.5, 5.0 x 3.2 and 7.0 x 5.0 mm SMD packages.
SPXO operates over a wide supply voltage range of 1.62V to 3.63V. Available in 2.0 x 1.6, 2.5 x 2.0 and 3.2 x 2.5mm SMD packages.
IQXO-951-2016 IQXO-951-2520 IQXO-951-3225
With lower height than some other oscillators these models facilitate compact design.
IQXO-540 IQXO-541 IQXO-542 IQXO-640 IQXO-641 IQXO-642
Phase noise can be defined as the short term, random fluctuations in the oscillator’s frequency domain. For some applications maximum clarity and low phase noise is critical. Such applications include: Wireless communications, radar systems, test & measurement, high‑speed data communications such as DAB, fibre-optic networks, and GNSS receivers, including GPS, GLONASS, Galileo and BeiDou systems. In fact, any application that demands precise frequency control, high signal quality, and low interference can benefit from the use of low phase noise oscillators. Find out more here...
IQD’s factory programmable oscillators allow for quick despatch times for custom frequencies and are available in a variety of package sizes and specifications. Despatch times dependent on quantity. Please contact us for further details.
IQD is a global distribution partner for Rakon’s high performance crystal oscillators, with features including low jitter, low phase noise and selectable output frequency options. Such features make them ideal for applications in GNSS/GPS (Global Positioning) and Telecommunications markets. These high reliability parts offer excellent shock- and vibration-resistance, characteristics that make them ideal for use in extreme environments including space and defence applications.
CFPS-39 – Industry standard, SMD, 3.2 x 2.2 mm – Recent applications include: measured pump oxygen delivery systems, audio amplifier, railway systems
CFPS-73 - Industry standard, SMD, 7 x 5mm - Recent applications include: industrial robotics, aviation electronics, home digital apps, heating & cooling control systems
CFPS-72 - Industry standard, SMD, 7 x 5mm - Recent applications include: In-vehicle communications
IQXO-791 & IQXO-794 - Industry standard, Small form, SMD, 2.5 x 2.0mm. Recent applications include: Biometric telecommunication systems
Learn more about other frequency products from IQD...
For more information about any of our parts or for help with your design-in, you can contact our Sales Team, Application Support or Engineering on +44 (0) 1460 270200, or click Contact Us below to submit your enquiry.

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