ADF4155BCPZ

Overview

The ADF4155BCPZ is a fractional-N and integer-N phase-locked loop (PLL) synthesizer from Analog Devices Inc. It supports input frequencies from 500 MHz to 8 GHz and features a programmable dual-modulus prescaler of 4/5 or 8/9. The device includes a high-resolution 38-bit modulus for exact frequency synthesis with zero error. It operates on a 3.3 V ± 5% power supply, compatible with 1.8 V logic, and provides a separate charge pump supply (VP) up to 5.5 V for extended tuning voltage. The RF output stage offers programmable power levels from -4 dBm to +5 dBm with divide-by options of 1, 2, 4, 8, 16, 32, or 64.

Feature Summary

• Supports both Fractional-N and Integer-N PLL synthesis modes with a 38-bit modulus for precise frequency generation.
• Phase Frequency Detector (PFD) operating at frequencies up to 125 MHz.
• Programmable output divider allowing division by 1, 2, 4, 8, 16, 32, or 64.
• Separate charge pump supply pin (VP) supporting voltages up to 5.5 V for extended VCO tuning ranges.

Applications

• Wireless infrastructure systems including W-CDMA, TD-SCDMA, WiMAX, GSM, PCS, DCS, and DECT.
• Point-to-point and point-to-multipoint microwave communication links.
• Test equipment requiring stable clock generation and frequency synthesis.
• Wireless LANs and CATV equipment.
• General clock generation applications.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and reel specifications. Ensure that the external components, particularly the loop filter and VCO, are selected to match the device's electrical characteristics and operating temperature range of -40°C to +85°C.

Selection Notes

Select the ADF4155BCPZ when an external VCO capable of operating up to 8 GHz is required. Consider the separate VP supply pin if the application demands a tuning voltage exceeding the main 3.3 V supply. Verify that the reference input signal meets the sensitivity requirements for single-ended or differential modes as specified in the datasheet.

Part Context

This component belongs to the ADF4155 series of PLL synthesizers. It is designed to work in conjunction with external Voltage Controlled Oscillators (VCOs) and passive loop filters. The 'BCPZ' designation indicates the specific lead-free LFCSP-24 package variant available from Analog Devices.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. Consult the manufacturer's official documentation for any updated revisions or direct replacements within the same product family.