ADF4355BCPZ-RL7

Overview

The ADF4355BCPZ-RL7 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) architectures, enabling operation across an RF output frequency range of 54 MHz to 6800 MHz. The device features a high-resolution 38-bit modulus and programmable output dividers (÷1, ÷2, ÷4, ÷8, ÷16, ÷32, or ÷64). It operates with 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 is housed in a 32-lead LFCSP package.

Feature Summary

• Integrated VCO with fundamental frequency range from 3400 MHz to 6800 MHz
• Fractional-N and Integer-N PLL synthesis with 38-bit modulus resolution
• Programmable output dividers: ÷1, ÷2, ÷4, ÷8, ÷16, ÷32, or ÷64
• Low phase noise performance: -116 dBc/Hz at 100 kHz offset from 3.4 GHz carrier

Applications

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

Procurement Notes

Verify the specific ordering suffix RL7 corresponds to the reel packaging configuration required for assembly. Confirm that the B-grade temperature rating (-40°C to +85°C) aligns with the operational environment. Ensure the external loop filter design accounts for the fixed RSET bias current resistor value of 5.1 kΩ to achieve the specified charge pump current matching.

Selection Notes

Select this component when a wide tuning range up to 6.8 GHz is required within a single IC. The integrated VCO eliminates the need for external oscillators, simplifying board layout. Designers must provide separate 3.3 V supplies for logic/analog and 5.0 V supplies for the VCO and charge pump. The 32-bit serial interface requires careful timing adherence, with a maximum CLK frequency of 50 MHz.

Part Context

The ADF4355 belongs to the ADF4355 family of microwave wideband synthesizers. The BCPZ designation indicates the commercial temperature grade and lead-free LFCSP packaging. The -RL7 suffix denotes the tape and reel quantity for automated manufacturing. This part serves as a direct replacement for previous iterations requiring similar frequency coverage and integration levels.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.