ADF4350ABCPZ

The ADF4350ABCPZ is Analog Devices’ wideband, programmable RF synthesizer with an integrated VCO. It delivers fractional-N and integer-N frequency synthesis to generate RF outputs roughly from 35 MHz up to 4.4 GHz.
Key points:
- Architecture: integrated VCO plus programmable division chain (N/R counters) with fractional modulus (MOD) and fractional value (FRAC), plus programmable output dividers.
- Reference and control: requires an external reference network/loop filter; programmed via a 24-bit SPI-style serial interface to set REF divider, N, FRAC, MOD, and output division.
- Performance: capable of fine frequency resolution and good phase-noise performance suitable for many RF applications.
- Packaging: typically offered in a 16-lead LFCSP package; variant suffix ABCPZ indicates specific packaging/compliance.
- Applications: wireless transceivers, RF test equipment, cellular/ISM band equipment, microwave links, and other RF synthesizer needs.
Note: Always consult the latest datasheet for exact specs, pinout, and recommended external components.

Here are the core features of the ADF4350ABCPZ (Analog Devices):
- Fully integrated wideband PLL synthesizer with internal VCO
- VCO tuning range: approximately 2.2 GHz to 4.4 GHz
- RF output: 35 MHz to 4.4 GHz
- Fractional-N synthesis with sigma-delta fractional division for fine frequency steps
- Programmable division: N divider and programmable output divider
- Reference input: typically 10–60 MHz (with programmable reference divider)
- SPI-compatible 4-wire serial control interface; MUXOUT/STATUS outputs
- On-chip charge pump; programmable divider; lock detect and power-down
- Low-noise operation suitable for wireless applications
- Package: ABCPZ (28-lead LFCSP), RoHS-compliant
- Temp range: -40°C to +85°C (industrial grade)
Optional notes:
- Suitable for applications requiring high flexibility, wide tuning range, and precise fractional-N steps.
- Typical uses include RF transceivers, microwave receivers, and local oscillator synthesis.

Package type: 28-pin Lead Frame Chip Scale Package (LFCSP) with exposed pad (7×7 mm).

- Pin count: 28 pins
- Function: ADF4350ABCPZ is a 28‑pin fractional‑N phase‑locked loop (PLL) frequency synthesizer with an integrated VCO and prescaler. It generates RF frequencies from a reference clock, programmed via SPI (SCLK, SDI, SDO, CS) to set N/fractional values. Includes RF output, reference input, feedback, lock detect, MUXOUT, and power/control pins (DVDD/AVDD/GND, PD, ENABLE), plus standard PLL/clocking support pins.

- Manufacturer: Analog Devices, Inc. (ADI).
- What kind of company: A US-based multinational semiconductor company that designs, manufactures, and markets analog, mixed-signal, and digital signal processing integrated circuits for communications, instrumentation, and industrial applications.

Applications of ADF4350ABCPZ include:
- Wideband RF/microwave frequency synthesis and LO generation for wireless transceivers (cellular base stations, point-to-point links, Wi‑Fi)
- RF front-ends and up/down converters
- Radar and avionics LO sources
- RF test equipment, signal generators, and lab instrumentation

Equivalent products include:
- Analog Devices: ADF4350 family members such as ADF4350ABCPZ, ADF4350ACPZ, ADF4350BCPZ; and close equivalents ADF4351/ADF4352.
- Other vendors (cross‑reference): TI LMX2581/LMX2582 and Maxim MAX2870/MAX2871.
Note: verify pinout, reference input, VCO range, and packaging to ensure true cross‑compatibility.