ADF4351BCPZ - 4.4 GHz Fractional-N PLL Synthesizer | Analog Devices
MPN: ADF4351BCPZ ✓ Hoạt độngADF4351BCPZ Tóm tắt
An RF frequency synthesizer generates a stable, programmable output by locking a voltage-controlled oscillator to a reference through a phase-locked loop. The ADF4351 belongs to the PLL synthesizer and clock-generator hierarchy, integrating the synthesizer, VCO, programmable dividers, reference and feedback paths, and RF output circuitry. This integration reduces board-level design effort while retaining the flexibility required for external loop-filter optimization.
According to the Analog Devices product page and datasheet, the ADF4351 supports fractional-N and integer-N synthesis, includes an integrated VCO, and is intended for wideband RF applications. The 10 MHz to 250 MHz input range and 2.2 GHz to 4.4 GHz fundamental VCO range make it suitable for microwave communication, wireless infrastructure, test equipment, radar-related RF signal chains, and frequency-agile RF systems. Its fractional-N operation permits fine frequency resolution when the reference and N-divider settings are selected appropriately.
The device requires an external loop filter and external reference frequency. Filter component selection affects loop bandwidth, phase noise, reference-spur behavior, lock time, and the amount of ripple presented to the VCO control node. Designers should evaluate loop dynamics for each output frequency rather than assuming one filter network is optimal across the full 2.2 GHz to 4.4 GHz range. The exposed pad provides the required thermal and electrical connection to the PCB.
Typical implementation places the ADF4351 between a stable reference source and an RF load or receiver/transmitter signal chain. The output can be filtered, buffered, or mixed according to the system requirement. Keep the reference and loop-filter connections short, provide clean supply decoupling, and use a controlled-impedance RF layout for the output path. Verify phase noise, spur levels, lock behavior, output power, and temperature performance with the final reference and filter implementation.
For direct replacement, verify package dimensions, exposed-pad construction, pin assignments, register compatibility, reference range, VCO range, and supply limits. A similar frequency range alone is insufficient for drop-in use. This page combines verified manufacturer and distributor information with practical PLL design considerations, comparison fields, and sourcing-oriented FAQ answers. Pricing and availability should be confirmed with authorized distributors as of 2026-10-21.
Bộ thay thế dễ dàng lắp đặt cho ADF4351BCPZ — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ADF4351BCPZ (cùng hình factor và footprint) — khác nhau ở Output Frequency Range, Package.
ADF4351BCPZ-RL7
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADF4351BCPZ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADF4351BCPZ-RL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADF4351BCPZ-REEL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADF4350BCPZ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADF4351BCPZ Thông số kỹ thuật
| Product Type | RF clock and frequency synthesizer IC |
| Synthesis Modes | Fractional-N and integer-N |
| Integrated VCO | Yes |
| Fundamental VCO Frequency Range | 2200 MHz to 4400 MHz |
| Maximum Output Frequency | 4400 MHz |
| Reference Input Frequency Range | 10 MHz to 250 MHz |
| Supply Voltage Range | 3 V to 3.6 V |
| Hộp | 32-lead VFQFN exposed pad, CSP |
| Number of Circuits | 1 |
| External Components | External loop filter and external reference frequency |
| Output Frequency Range | Up to 4400 MHz |
| Input Reference Maximum Frequency | 250 MHz |
| Input Reference Minimum Frequency | 10 MHz |
| VCO Minimum Fundamental Frequency | 2200 MHz |
| VCO Maximum Fundamental Frequency | 4400 MHz |
Hướng dẫn cấu hình chân ADF4351BCPZ 32-lead vfqfn exposed pad, csp
Cấu hình chân cho ADF4351BCPZ (32-lead vfqfn exposed pad, csp gói). Số thứ tự chân, chức năng và sơ đồ kết nối được xác định trong tài liệu thông số kỹ thuật của nhà sản xuất. Tham khảo nó để biết footprint và hướng dẫn hàn chính xác.
Không có dữ liệu chân cụ thể sẵn có cho ADF4351BCPZ.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
ADF4351BCPZ phù hợp cho 6 Áp dụngs: RF Communications, Wireless Infrastructure, RF Test and Measurement, Radar and Microwave Systems, Frequency-Sweep Test Systems, RF Signal-Chain Demonstration.
RF Communications
The ADF4351BCPZ fits programmable RF communication links that need a 2200 MHz to 4400 MHz synthesized source. Its integrated VCO reduces the number of external oscillator blocks, while fractional-N operation supports fine frequency planning against a 10 MHz to 250 MHz reference. Place the device near the RF matching network and design the external loop filter for the required lock time and spur performance. The final RF budget must include output filtering, reference phase noise, and measured lock behavior.
Được đề xuất
Wireless Infrastructure
The ADF4351BCPZ can provide a programmable RF source in wireless infrastructure equipment operating within its 2200 MHz to 4400 MHz VCO range. Fractional-N synthesis is useful when the system needs fine channel spacing, while integer-N operation can simplify some frequency plans. Use a clean reference and controlled-impedance RF routing, and validate loop-filter components against phase-noise and reference-spur limits. The exposed pad should be connected to the PCB thermal and ground system according to the Analog Devices package guidance.
Được đề xuất
RF Test and Measurement
The ADF4351BCPZ is suitable for RF test instruments that need a programmable local oscillator or excitation signal in the 2200 MHz to 4400 MHz range. Its fractional-N mode supports fine frequency resolution, but instrument accuracy depends on the reference, calibration, loop dynamics, and output path. Measure phase noise, spurs, output power, and lock time with the final filter and fixture rather than relying on nominal synthesizer features alone.
Được đề xuất
Radar and Microwave Systems
The ADF4351BCPZ can serve as a programmable RF source in microwave and radar-related test or signal-chain designs when the required frequency falls between 2200 MHz and 4400 MHz. The integrated VCO simplifies the RF oscillator architecture, but the external loop filter remains central to stability and spectral performance. Keep the VCO control loop compact, provide multiple supply-decoupling paths, and verify temperature, phase-noise, and spur performance across the operating band.
Được đề xuất
Frequency-Sweep Test Systems
The ADF4351BCPZ supports programmable frequency generation for RF sweep and characterization systems. Fractional-N mode can provide fine resolution, while the 2200 MHz to 4400 MHz fundamental VCO range covers a substantial microwave band. The external loop filter and reference frequency must be chosen for the desired sweep rate and settling behavior. A controlled impedance output, suitable shielding, and measured spur filtering are important when converting the synthesizer into a precision test source.
Được đề xuất
RF Signal-Chain Demonstration
The ADF4351BCPZ is useful for laboratory RF signal-chain demonstrations because it combines an integrated VCO with programmable fractional-N and integer-N synthesis. It can generate a tunable RF reference for evaluating mixers, filters, amplifiers, and detector boards in the 2200 MHz to 4400 MHz range. Preserve the manufacturer's recommended supply and exposed-pad layout, use a stable reference, and include an RF output matching structure so that the measured behavior reflects the intended operating conditions.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADF4351BCPZ — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ADF4351BCPZ-RL7 | ADF4351BCPZ | ADF4351BCPZ-RL | ADF4351BCPZ-REEL | ADF4350BCPZ |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
Bảo phân biệt quan trọng
- Integrated 2.2 GHz to 4.4 GHz VCO (vsADF4350BCPZ)
- Wide reference-input range (vsADF4351BCPZ-RL7)
- 32-lead exposed-pad implementation (vsADF4351BCPZ-RL)
Ghi chú thiết kế
Keep the ADF4351BCPZ supply network short and decouple the 3 V to 3.6 V analog supply close to the device pins. Place bulk and high-frequency decoupling according to the Analog Devices recommended layout, and keep the RF output return path separate from sensitive reference and loop-filter routing. Confirm the final rail tolerance, startup sequence, and ground continuity on the assembled PCB.
Do not select a replacement solely by matching the 32-lead package or the 4.4 GHz headline frequency. Verify pin assignments, exposed-pad construction, reference-input limits, supply range, register compatibility, VCO range, and ordering-temperature information. The supplied cross-reference data confirms related ADF4351 variants but does not fully quantify every drop-in difference.
Design the external loop filter for the intended reference frequency, divider settings, lock time, phase noise, and spur requirements. Keep the loop-filter components close to the control node and use a stable reference with low phase noise. Because PLL performance depends on the complete loop, measure lock time, spurs, and phase noise using the final component values and PCB layout.
Thông tin tuân thủ
The supplied verified data does not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for the exact ADF4351BCPZ. Confirm current compliance with Analog Devices before procurement.
