ADF4350ABCPZ

Overview

The ADF4350ABCPZ is a wideband synthesizer with an integrated voltage-controlled oscillator (VCO) manufactured by Analog Devices Inc. It supports both fractional-N and integer-N phase-locked loop (PLL) architectures when used with an external loop filter and reference frequency. The device generates RF output frequencies ranging from 137.5 MHz to 4400 MHz using divide-by-1, -2, -4, -8, or -16 circuits. Key electrical specifications include a power supply range of 3.0 V to 3.6 V, typical RMS jitter of less than 0.4 ps, and a programmable dual-modulus prescaler of 4/5 or 8/9. The component operates within a temperature range of −40°C to +85°C.

Feature Summary

• Integrated VCO with fundamental output frequency range from 2200 MHz to 4400 MHz
• Supports fractional-N and integer-N PLL synthesis modes
• Programmable output dividers: ÷1, ÷2, ÷4, ÷8, and ÷16
• Low phase noise performance with typical RMS jitter <0.4 ps
• Software and pin-controllable RF output mute function

Applications

• Wireless infrastructure including W-CDMA, TD-SCDMA, WiMAX, GSM, PCS, DCS, and DECT
• Test equipment requiring precise frequency generation
• Wireless LANs and CATV equipment
• Clock generation systems

Procurement Notes

Verify the specific 'A' suffix in the part number ADF4350ABCPZ against official Analog Devices documentation, as standard datasheets typically list ADF4350BCPZ. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary. Ensure the ordering suffix matches the required package type and temperature grade for your specific application constraints.

Selection Notes

Select this component for applications requiring a wide tuning range up to 4.4 GHz with low phase noise. Ensure the design includes an external loop filter and reference clock source. Consider the 3-wire serial interface compatibility with the host controller. Verify that the power supply can provide stable 3.0 V to 3.6 V to meet the specified current consumption requirements for the VCO and digital sections.

Part Context

The ADF4350 series belongs to Analog Devices' family of wideband PLL frequency synthesizers. It is designed to replace discrete PLL solutions by integrating the VCO, charge pump, and digital logic into a single LFCSP-32 package. This integration reduces board space and simplifies design compared to using separate components for frequency synthesis.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult Analog Devices for direct replacements or cross-references based on specific performance requirements.