PLL synthesizer for RF LO generation
The ADF4211BCP is a PLL frequency synthesizer from Analog Devices, designed to generate local-oscillator clocks up to 3 GHz from a CMOS or TTL reference input. The 3:1 input-to-output ratio means three reference paths feed one clock output — typical in heterodyne receivers where the VCO feedback and the reference divide share the same PLL core.
Package and footprint considerations
The 20-LFCSP (4x4 mm) exposed-pad package uses a thermal via array under the paddle for heat sinking and ground return. The pad is electrically connected to the substrate ground.
Lifecycle and sourcing posture
Production orders can be placed through distribution channels. The part is RoHS non-compliant (lead-bearing termination finish), so confirm your assembly line's exemption or waiver for full RoHS compliance.