ADF4355-2BCPZ

Overview

The ADF4355-2BCPZ is a microwave wideband synthesizer with an integrated voltage-controlled oscillator (VCO) manufactured by Analog Devices Inc. It supports fractional-N and integer-N phase-locked loop (PLL) frequency synthesis, covering an RF output frequency range from 54 MHz to 4400 MHz. The device features a low phase noise VCO with a fundamental range of 3400 MHz to 6800 MHz and includes programmable divide-by-1, 2, 4, 8, 16, 32, or 64 output dividers. It operates on analog and digital power supplies of 3.15 V to 3.45 V, while the charge pump and VCO require 4.75 V to 5.25 V. The component utilizes a 3-wire serial interface for register control and offers programmable output power levels and an RF mute function.

Feature Summary

• RF output frequency range: 54 MHz to 4400 MHz
• Integrated low phase noise VCO with fundamental range of 3400 MHz to 6800 MHz
• Fractional-N and integer-N synthesizer capabilities with high resolution 38-bit modulus
• Programmable output dividers (÷1, ÷2, ÷4, ÷8, ÷16, ÷32, ÷64)
• Dual supply operation: 3.3 V for logic/analog and 5 V for VCO/charge pump

Applications

• Wireless infrastructure (W-CDMA, TD-SCDMA, WiMAX, GSM, PCS, DCS, DECT)
• Point-to-point and point-to-multipoint microwave links
• Satellites and VSATs
• Test equipment and instrumentation
• Clock generation

Procurement Notes

Verify the specific suffix BCPZ corresponds to the LFCSP-32 package variant when sourcing. Confirm that the required 5 V supply for VP and VVCO pins is available in the target design, as this differs from standard 3.3 V only PLLs. Ensure ESD precautions are taken during handling due to the sensitivity of the RF circuitry.

Selection Notes

Select the ADF4355-2BCPZ when a wide frequency range up to 4.4 GHz is required with integrated VCO performance. Consider the dual supply requirement (3.3 V and 5 V) during power budgeting. Use the ADIsimPLL tool to optimize loop filter components for desired phase noise and lock time specifications. Verify that the reference input frequency matches the supported single-ended (up to 250 MHz) or differential (up to 600 MHz) modes.

Part Context

The ADF4355-2 is part of the ADF4355 family of microwave wideband synthesizers. It shares architectural similarities with the ADF4355 but is optimized for specific frequency ranges and performance characteristics. The BCPZ suffix indicates the lead-free, RoHS-compliant version packaged in a 32-lead LFCSP. It serves as a direct replacement for discrete PLL/VCO solutions in compact RF designs.

Replacement Considerations

Public confirmed substitute part numbers include ADF4355BCPZ for applications requiring extended frequency coverage up to 6.8 GHz. For designs needing programmable output power levels specifically, ADF4355-2BCPZ is the designated variant within the series.