ADF5356BCPZ
ADF5356BCPZ - 13.6 GHz Wideband PLL Synthesizer | Analog Devices
The Analog Devices ADF5356BCPZ is a 13.6 GHz microwave wideband frequency synthesizer with an integrated VCO, housed in a 32-lead WFQFN exposed-pad CSP package. It supports fractional-N or integer-N phase-locked-loop operation with an external loop filter and reference frequency. Its fundamental VCO operates from 3400 MHz to 6800 MHz, while internal divide-by-1 through divide-by-64 paths permit RF output frequencies as low as 53.125 MHz.
A microwave wideband synthesizer is a clock-and-timing IC that combines a voltage-controlled oscillator with a phase-locked loop to produce a stable, programmable output frequency. The broader hierarchy is frequency synthesizer > PLL frequency synthesizer > clock generation and timing IC > integrated circuit. This architecture is useful when a system needs precise RF frequency generation from a stable reference without implementing every oscillator and feedback function as discrete circuitry.
The ADF5356 supports integer-N and fractional-N synthesis, giving designers flexibility in channel spacing, reference-to-output ratios, and phase-noise planning. Its output stage includes divide ratios of 1, 2, 4, 8, 16, 32, and 64, extending usable output coverage below the VCO fundamental range. According to the Analog Devices product page, the wideband microwave VCO supports frequency operation across the stated 3400 MHz to 6800 MHz fundamental range.
The integrated microwave VCO is the central architecture of the device. A PLL locks the VCO to an external reference, while an external passive loop filter shapes loop dynamics and phase noise. Fractional-N operation permits division ratios that are not integers, although final settling time, spurious performance, and loop-filter design depend on the complete system configuration. The exact supply voltages, reference-frequency limits, register map, phase-noise values, and temperature limits are not included in the supplied web results.
Typical uses include microwave and RF signal sources, communications test equipment, local oscillators, frequency-conversion subsystems, and instrumentation requiring programmable RF outputs. The divider chain makes the device relevant when a system needs output below the 3400 MHz to 6800 MHz VCO range. The evaluation hardware identified in the verified data includes a differential 122.88 MHz reference TCXO, a loop filter, USB interface, power connections, and SMA connectors.
For PCB implementation, follow the exposed-pad land pattern and thermal-via recommendations in the manufacturer datasheet. The external loop filter, reference components, RF output matching network, supply decoupling, and exposed-pad thermal design materially affect phase noise, lock behavior, output power, and system stability. Verify all voltage, temperature, and absolute-maximum limits before releasing a production design.
This product record consolidates the verified manufacturer function, frequency-range, divider, mute-function, package, evaluation-board, distributor, and replacement information into one engineering reference. It also distinguishes documented drop-in candidates from broader functional alternatives and flags unavailable electrical data explicitly rather than estimating it.
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