ADF4356BCPZ

Overview

The ADF4356BCPZ is a wideband synthesizer with an integrated VCO, manufactured by Analog Devices Inc. It supports fractional-N and integer-N phase-locked loop (PLL) frequency synthesis. The device operates within an RF output frequency range of 53.125 MHz to 6800 MHz. Key electrical specifications include a normalized in-band phase noise floor of −227 dBc/Hz for integer channels and −225 dBc/Hz for fractional channels. Integrated RMS jitter is specified at 97 fs over the 1 kHz to 20 MHz offset range for a 6 GHz output. The component utilizes a 3-wire serial interface for register control and requires analog/digital power supplies of 3.15 V to 3.45 V and charge pump/VCO supplies of 4.75 V to 5.25 V.

Feature Summary

• Integrated VCO with fundamental frequency range from 3400 MHz to 6800 MHz
• Programmable output dividers allowing frequencies down to 53.125 MHz
• High resolution 52-bit modulus for precise frequency generation
• Pin-compatible upgrade path from the ADF4355

Applications

• Wireless infrastructure systems including LTE, W-CDMA, TD-SCDMA, WiMAX, GSM, PCS, and DCS
• Point-to-point and point-to-multipoint microwave links
• Satellite communications and VSAT applications
• Test equipment and instrumentation requiring stable clock generation

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and reel quantity. Confirm that the required external components, such as the loop filter and reference source, are compatible with the device's input sensitivity and power supply requirements before procurement.

Selection Notes

Select this component when a wide tuning range up to 6.8 GHz is required with low phase noise performance. Ensure the application can accommodate the dual power supply requirement of approximately 3.3 V for logic/analog and 5.0 V for the VCO and charge pump. Verify that the PCB layout supports the LFCSP-32 package thermal dissipation needs.

Part Context

The ADF4356 serves as a direct pin-compatible replacement for the ADF4355, offering enhanced performance characteristics. It belongs to the ADF4356 family of wideband synthesizers designed for high-frequency RF applications. The device integrates multiple functional blocks, including the VCO, prescaler, and digital control logic, into a single compact package.

Replacement Considerations

The ADF4356 is explicitly documented as an upgrade and pin-compatible alternative to the ADF4355. Designers migrating from the ADF4355 should verify that the existing board layout and external passive components meet the updated electrical specifications of the ADF4356.