2.4 GHz PLL synchronizer with 4:10 fan-out
The AD9544BCPZ-REEL7 is a PLL-based clock synchronizer from Analog Devices, supporting differential or single-ended inputs and delivering CML, HCSL, LVDS, or single-ended outputs up to 2.4 GHz. Its 4:10 input-to-output ratio lets a single reference clock feed up to ten independent clock domains, which matters when a base station or test equipment backplane needs to distribute a clean reference to multiple line cards without adding external fan-out buffers. Two internal PLL circuits allow independent frequency synthesis per channel pair, so one device can simultaneously clean up a 10 MHz reference for a data converter and generate a 156.25 MHz clock for an Ethernet PHY — each with its own loop bandwidth and output format.
Industrial temp and wide supply — board-fit checklist
Housed in a 48-LFCSP (7x7 mm) with exposed pad, the package demands a thermal via array under the pad for heat sinking — the datasheet's recommended land pattern shows a 4×4 via grid. The 0.5 mm pitch LFCSP is routable on a 4-layer board with standard 0.18 mm trace/space rules.
Active lifecycle — sourcing posture
Listed as Active with ROHS3 compliance, the AD9544BCPZ-REEL7 is an ongoing production part from Analog Devices. The REEL7 suffix indicates tape-and-reel packaging, which is the standard delivery format for automated pick-and-place assembly. Cut-tape quantities are also available for prototyping or low-volume builds.