LTC6946IUFD-3#PBF

The LTC6946IUFD-3#PBF is an integer-N frequency synthesizer with an integrated voltage-controlled oscillator (VCO), manufactured by Analog Devices. It delivers ultralow phase noise and spurious performance across a continuous output frequency range of 640 MHz to 5.79 GHz, combining a high-performance PLL core with a differential VCO in a single chip. The device is housed in a compact 28-lead plastic quad flat no-lead (PQFN) package with a 4 mm × 5 mm footprint, offering a space-efficient solution for frequency generation in demanding RF systems.

Typical applications include microwave point-to-point and point-to-multipoint radio links, satellite communications terminals, aerospace radar and electronic warfare platforms, and precision test and measurement instrumentation. The wide tuning range and low phase noise support local oscillator generation in high-dynamic-range receivers and transmitters. From a procurement standpoint, the “I” suffix designates industrial temperature range operation (-40°C to +85°C), while the “#PBF” marking confirms a lead-free, RoHS-compliant finish. As an active product from a major high-reliability supplier, the device carries minimal near-term obsolescence risk and benefits from long-lifecycle documentation, important for sustained programs in defense, aerospace, and industrial infrastructure.