673M-01ILF

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673M-01ILF is a clock generator, Phase-Locked Loop (PLL), frequency synthesizer integrated circuit (IC) which is a source of clock and timing reference signals. It provides the various frequency output clocks and timing which can be configured to meet specific system timing requirements. This piece of IC creates and transmits stable, low-jitter, clock signals over a wide frequency range without specialized calibration and trim procedures.

Application field:

673M-01ILF is widely used in communication systems, high-speed logic, high-frequency sampling systems and wide-bandwidth oscillography. It is designed for applications such as cellular base station clocks and timing, high-end router timing, Ethernet PHY clocks, and backplane clock distribution. It can also be used in applications such as cellular test equipment, oscilloscopes, Power over Ethernet (PoE), and multiprocessor clusters.

Working Principle:

673M-01ILF is constituted of various blocks such as the main oscillator, output dividers, prescalers, main clock generator, PLL, and charge pump. The main oscillator runs at a selectable frequency within a specified range. This oscillator is typically used as the extra high-frequency reference for the PLL. The output dividers also divide down the main oscillator frequency. The prescalers adjust the division range from 1 to 10. Whereas, the main clock generator provides the reference clock for the PLL. The PLL is used to multiply, or divide the main oscillator clock frequency to the required output frequencies. Further, the charge pump provides the necessary current for the loop filter.

673M-01ILF features 8 output pins corresponding to programmable output pins. These pins can be configured with up to 32 different frequencies to which the output line is synchronized. It also supports spread spectrum frequency generation to provide EMI reduction. Numerous other features such as hysteresis, skew management, integrated loop filter, and automatic frequency maintaining without external VCO tuning are also included in the device.

Conclusion:

673M-01ILF is a high-performance clock generator, Phase-Locked Loop (PLL), and frequency synthesizer integrated circuit (IC). It is highly advantageous for applications requiring up to 32 different frequencies in various communication systems, high-speed logic and wide-bandwidth oscillography. It features programmable output pins, spread spectrum frequency generation, hysteresis, skew management, integrated loop filter, and automatic frequency maintaining. It requires little or no specialized trim methods, and remains an essential component for many electronic systems.

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