ADF4112BRUZ

The ADF4112BRUZ is Analog Devices’ fractional-N phase-locked loop (PLL) frequency synthesizer. It locks an external VCO to a reference clock using a programmable divider and a fractional-N divider, enabling fast frequency switching with low phase noise for RF applications.
Key points:
- SPI-compatible control interface for programming
- Programmable reference divider and N-dividers with a dual-modulus prescaler
- Sigma-delta fractional-N architecture to minimize fractional spurs
- Integrated phase-frequency detector (PFD) and charge pump (CP)
- External loop filter and VCO required (not a standalone VCO)
- Suitable for wideband RF/microwave transceivers, communications, radar, etc.
Note: Check the datasheet for exact electrical specs, packaging details, and recommended application circuits.

- High-performance, wide-band fractional-N PLL frequency synthesizer
- External VCO required; programmable feedback divider N and reference divider R for integer and fractional modes
- Delta-sigma fractional-N modulator to minimize spurs; multi-modulus prescaler
- SPI-compatible serial interface for full register control
- Programmable charge-pump current and loop-filter characteristics
- Phase detector with lock detect and fast lock times
- Power-down mode; suitable operating voltage range
- Low phase-noise performance for RF/microwave applications
- Package: ADF4112BRUZ (RoHS-compliant) in compact form factor

Manufacturer: Analog Devices, Inc.
What kind of company: Analog Devices is an American multinational semiconductor company that designs and manufactures high-performance analog, mixed-signal, RF and digital signal-processing integrated circuits and related products for applications in industrial, communications, automotive, healthcare and consumer electronics.

The ADF4112BRUZ is supplied in a 32-lead LFCSP (lead-frame chip-scale package), 6 mm × 6 mm, RoHS-compliant (Pb‑free).