8N4Q001FG-0141CDI

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Programmable timers and oscillators are the basis for designing a wide range of applications. From the most sophisticated industrial systems to the simplest consumer devices, clock signals must be generated and controlled to enable the systems to function. The 8N4Q001FG-0141CDI (henceforth referred to as the 8N4Q) is an example of such a programmable timer/oscillator. By understanding its application field and working principle, engineers can better utilize its capabilities to suit their own needs.

Application Field

The 8N4Q was specifically designed to address common clock and timer needs in a variety of settings. It is 1.1 mm high so it is well-suited to shallow spaces. It supports both a crystal oscillator and a voltage-controlled oscillator, and provides multiple versatile clock outputs including four 1-pin outputs and one 2-pin output. The 8N4Q also has three selectable clock modes, which are selectable via the FSYNC, DIVSEL_N, and SYSSEL_N pins. The SYSSEL_N pin can also be used to switch mod frequency, thereby offering designers more flexibility.

The 8N4Q was designed primarily for low- and mid-range frequency applications including embedded controllers, IoT devices, and consumer electronics. By covering a wide range of applications, the 8N4Q can provide an effective clock/timer solution without compromising performance.

Working Principle

The 8N4Q operates on a unique dual-clock mode using both a crystal oscillator and a voltage-controlled oscillator (VCO). The VCO operates independently of the crystal oscillator, allowing the 8N4Q to use different oscillator frequencies without a complicated circuit change. The 8N4Q converts signals from the crystal and VCO sources into a single clock output, which is then sent to up to five 1- or 2-pin outputs.

The 8N4Q also employs a programmable clock divider, which allows for multiple modulation frequencies. This is made possible through the use of an Intelligent Frequency Synchronization (IFS) system. The 8N4Q has three clock modes, which are selectable via the FSYNC, DIVSEL_N, and SYSSEL_N pins. The SYSSEL_N pin is also used to control the modulation frequency, allowing designers to adjust their clock to their desired output frequency.

Conclusion

The 8N4Q is a versatile programmable timer and oscillator. Its application field covers a range of needs, from embedded controllers to consumer electronics, and its dual-clock mode and modulation frequency controls give designers the flexibility they need to tailor their applications to their exact specifications. By understanding its application field and working principle, engineers can best utilize the 8N4Q to suit their own needs.

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