CDCE906PWRG4

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CDCE906PWRG4 Application Field and Working Principle

The CDCE906PWRG4 is a high performance clock generator belonging to the Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers category. It is a programmable, low-phase noise, voltage-controlled oscillator (VCO) that can be used to generate high precision output clock frequencies. The device can be programmed to generate any frequency from 10MHz to 1000MHz with ultra-low phase-noise and excellent pull range. This device is packaged in a low-profile PowerPAD QFN package.

Application

The main application of the CDCE906PWRG4 is in communications, computing, navigation, and industrial equipment. The device can be used, for example, to generate clock frequencies for digital baseband and IF technologies, microprocessors, digital signal processors, radio transceivers, and general timing applications. In addition, due to its small form factor, it is suitable for portable equipment and other applications where board space is at a premium.

Working Principle

The device consists of two main components: a voltage-controlled oscillator (VCO) and a phase-locked loop (PLL). The VCO generates an output frequency (fVCO) that is proportional to a control voltage (Vcont). The control voltage is generated by a control logic block. This control logic block is calibrated and locked to the clock frequency through some loop filter network. The VCO then generates an output frequency that is locked to the desired reference clock.

The device contains two clock generators and two dividers. The dividers receive the input reference clock and divide it by a programmed divider value. The divided clock and the undivided ZIN (Z-Input) can then be used as the CDCE906PWRG4 input clock. The device then incorporates a wide range of PLL loop filters, including dual and single loop-filters.

Once the clock reference is set and the dividers are programmed, the device begins to produce a high-performance output clock with a wide-range of frequency, low-phase noise, and excellent pull range. The CDCE906PWRG4 is able to achieve up to 32dB lower close-in phase noise than a traditional oscillator, making it suitable for many timing applications in communications, computing, navigation, and industrial equipment.

Conclusion

The CDCE906PWRG4 is a high performance clock generator belonging to the Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers category. It is a programmable, low-phase noise, voltage-controlled oscillator (VCO) that can be used to generate high precision output clock frequencies. It can be used in many timing applications in communications, computing, navigation, and industrial equipment. The device contains two clock generators, two dividers, and offers a wide range of PLL loop filters, making it suitable for many precision timing applications.

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