MAX3670ETJ+TD

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The MAX3670ETJ+TD is a dual output clock generator with differential outputs and integrated phase-locked loop (PLL) to generate two outputs with different frequencies. This family offers a range of output frequencies, and can be used to generate local oscillator reference frequencies, MPEG clock signals, SONET/SDH clock signals, and other communication clocking architectures.

The MAX3670ETJ+TD allows users to adjust both output frequencies using a single reference input. This simplifies the design process and eliminates the need for separate clock sources for multiple outputs. The device also has a 50MHz reference output as well as an optional power down input/output pin for system power saving. This feature makes it an ideal choice for applications requiring low power consumption.

The MAX3670ETJ+TD application field is mainly used for clock generation in high speed communication applications such as 10GE, SONET/SDH, Fibre Channel, and WDM optical transport networks. The device can also be used for low-power applications such as home routers, fiber-to-the-home (FTTH), and other transport systems. The device is capable of clock generation up to 11.3GHz and offers excellent jitter performance without external components.

In terms of working principle, the device operates by using a differential voltage-controlled oscillator (VCO) as the reference oscillator. The VCO’s output is then divided down in order to achieve the desired output frequencies. The PLL section of the device includes a multi-phase charge pump, a phase frequency detector, and a loop filter to help achieve and maintain the desired output frequencies. The reference frequency is further divided and multiplied in the PLL with a harmonic-preserving divider and multiplier to eliminate sub-harmonics.

In summary, the MAX3670ETJ+TD is an ideal choice for applications requiring low-power, low-jitter clock generation up to 11.3GHz. The device offers an integrated PLL, differential outputs, and a low noise output, making it highly suitable for high speed communication applications. The device’s power-saving features make it an ideal choice for applications requiring low-power clock generation.

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