TRF3761-H

集成VCO的整数N分频PLL INTEGER-N PLL WITH INTEGRATED VCO

TRF3761 is a family of high performance, highly integrated frequency synthesizers, optimized for high performance applications. The TRF3761 includes a low-noise, voltage-controlled oscillator VCO and an integer-N PLL.

TRF3761 integrates divide-by 1, 2, or 4 options for a more flexible output frequency range. It is controlled through a 3-wire serial-programming-interface SPI interface. For power sensitive applications the TRF3761 can be powered down by the SPI interface or externally via chip_en pin 2.

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Fully Integrated VCO

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Low Phase Noise: –137dBc/Hz at 600kHz, fVCO

of 1.9GHz

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Low Noise Floor: –158dBc/Hz at 10MHz Offset

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Integer-N PLL

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Input Reference Frequency range: 10MHz to

104MHz

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VCO Frequency Divided by 2-4 Output

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Output Buffer Enable Pin

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Programmable Charge Pump Current

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Hardware and Software Power Down

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3-Wire Serial Interface

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Single Supply: 4.5V to 5.25V Operation