PLL clock generator for RF synthesis – what it does
The ADF4001BRUZ-R7 is a PLL-based clock generator from Analog Devices, part of the ADF4001 family, designed for RF synthesis applications. It accepts CMOS or TTL inputs and delivers a clock output up to 200 MHz. The 2:1 input-to-output ratio means you can select between two reference sources, useful for redundant clock trees or frequency hopping without reconfiguring the board. A single PLL circuit with an integrated divider lets you lock to a reference and multiply it—though the multiplier is not present internally, so the output frequency is derived from the reference divided by the feedback divider. This is a classic integer-N PLL architecture, best suited for applications where the output frequency is an integer multiple of the reference.
Supply and temperature – where it fits on the board
The supply range spans 2.7V to 5.5V, covering both 3.3V and 5V logic rails without a separate regulator. The 16-TSSOP package is a 4.4 mm-wide body with 0.65 mm pitch—standard for PLLs in this density, and the 0.65 mm pitch is routable on a two-layer board if the supply decoupling is kept tight.