AD9571ACPZPEC-RL

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AD9571ACPZPEC-RL is a clock generator, PLL, and frequency synthesizers designed to operate in the two-to-four gigahertz (GHz) range. It is based on a versatile, highly integrated linear PLL architecture, with RF synthesis techniques, that provides low jitter, integrated clock generation and PLL synthesis capabilities.

The AD9571ACPZPEC-RL provides the distinct features required for an integrated clock, PLL, and frequency synthesizer. It utilizes a low phase-noise voltage controlled oscillator (VCO) with an independent loop filter for improved phase-noise performance. The AD9571ACPZPEC-RL has three outputs with predefined frequency divisions.

AD9571ACPZPEC-RL is capable of clock application in the two-to- four gigahertz frequency range, making it suitable for use in a variety of applications such as broadband wireless communications and satellite navigation systems. For example, the AD9571ACPZPEC-RL can be used to generate the local clock signals required for baseband and RF receiver and transmitters in cellular phones, base stations, and satellite navigation systems.

The AD9571ACPZPEC-RL can also be used for frequency synthesis in GSM, CDMA, and other wireless systems and can also provide synchronization and jamming signals for jammer systems. Another application for the AD9571ACPZPEC-RL is for automated testing equipment.

In operation, the AD9571ACPZPEC-RL has two loops. The first loop, the charge pump loop, is used to control the output frequency. The charge pump loop is made up of a phase-frequency detector, a charge pump, and a programmable loop filter. The VCO output is fed back to the phase-frequency detector, allowing the VCO output to be divided into a preselected number, or divisor.

The second loop, the VCO or frequency loop, is used to increase the phase noise of the VCO and regulate the frequency stability of the VCO and the output. The VCO or frequency loop is made up of a voltage-controlled oscillator, an external (on-board) loop filter and a voltage controlled gain amplifier.

The AD9571ACPZPEC-RL has two calibration modes for external loop filter optimization, which allow automatic adjustment and optimization of the loop filter parameters for improved noise and phase-noise performance.

In summary, the AD9571ACPZPEC-RL is a highly integrated clock generator, PLL, and frequency synthesizer designed for operation in the two-to-four gigahertz range. It is suitable for a variety of applications such as in the production of clock and PLL signals for broadband wireless communications and satellite navigation systems. In addition, the device provides features such as two loop filters for improved noise and phase-noise performance and calibration modes for external loop filter optimization.

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