ADF4107BCPZ - 7 GHz Integer-N PLL | Analog Devices
MPN: ADF4107BCPZ ✓ Hoạt độngADF4107BCPZ Tóm tắt
A frequency synthesizer, or PLL, belongs to the clock-generation and timing hierarchy. Its phase-locked loop compares a divided feedback signal with a reference oscillator and drives a programmable frequency divider through a phase-frequency detector and charge pump. In an RF transceiver, this architecture supports local-oscillator generation where a stable reference frequency must be converted into a programmable carrier or intermediate-frequency signal.
The ADF4107 integrates a low-noise digital phase-frequency detector, precision charge pump, programmable reference divider, programmable A and B counters, and a dual-modulus prescaler identified as P/P + 1. The A counter is 6 bits and the B counter is 13 bits. This programmable divider structure permits the reference path and feedback division ratio to be configured according to the desired channel plan and synthesizer architecture.
The charge-pump output at pin 2 drives an external loop filter. According to the Analog Devices ADF4107 datasheet, the example loop-filter calculation targets 45 degrees of overall phase margin. The datasheet also gives a typical phase-noise result of -83 dBc/Hz at a 1 kHz carrier offset, with spurs better than -70 dBc. These figures make loop design and printed-circuit layout important to final phase noise and spurious performance.
Typical uses include wireless receiver local oscillators, wireless transmitter upconversion paths, RF downconversion systems, instrumentation requiring programmable RF frequencies, and intermediate-frequency generation. The 7 GHz maximum frequency supports RF operating bands below that limit, while the integer-N architecture simplifies frequency planning through programmable A and B counter ratios.
The external loop filter, reference components, supply bypassing, and ground return directly influence phase noise, lock behavior, and spur performance. Keep the charge-pump connection short, use a symmetrical loop-filter layout around the device, and decouple supply pins with the capacitance specified in the manufacturer datasheet. Confirm lock range and reference-divider settings for every required output frequency.
This page combines the manufacturer’s PLL architecture and measured performance details with package, sourcing, application, and replacement guidance. It also identifies the limits of a true drop-in replacement: the closest ADF4106, ADF4108, and ADF4109 devices share the family platform but change the maximum synthesized frequency, so the original ADF4107BCPZ remains preferable when the exact 7 GHz operating limit is required.
Bộ thay thế dễ dàng lắp đặt cho ADF4107BCPZ — 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 ADF4107BCPZ (cùng hình factor và footprint) — khác nhau ở Package, A Counter, Architecture, B Counter, Prescaler.
ADF4106BRU
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ADF4108
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ADF4109
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ADF4107BCPZ Thông số kỹ thuật
| Device Type | Integer-N PLL frequency synthesizer |
| Maximum Synthesized Frequency | 7 GHz |
| Architecture | Digital phase-frequency detector, precision charge pump, programmable A/B counters, and dual-modulus prescaler |
| A Counter Resolution | 6 bits |
| B Counter Resolution | 13 bits |
| Prescaler Structure | P/P + 1 dual-modulus prescaler |
| Typical Phase Noise | -83 dBc/Hz at 1 kHz carrier offset |
| Typical Spurs | Better than -70 dBc |
| Example Loop Phase Margin | 45 degrees |
| Charge-Pump Output Pin | Pin 2 |
| Hộp | 20-lead WFQFN exposed-pad CSP |
| Kiểu lắp đặt | Surface mount |
Hướng dẫn cấu hình chân ADF4107BCPZ 20-lead wfqfn exposed-pad csp
Cấu hình chân cho ADF4107BCPZ (20-lead wfqfn 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 ADF4107BCPZ.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
ADF4107BCPZ phù hợp cho 6 Áp dụngs: Wireless Receiver Local Oscillator, Wireless Transmitter Upconversion, RF Downconversion Local Oscillator, Programmable RF Test Signal Source, Intermediate-Frequency Generator, Industrial RF Instrumentation.
Wireless Receiver Local Oscillator
The ADF4107BCPZ is appropriate for generating a programmable receiver local oscillator below 7 GHz. Its integer-N architecture combines a 6-bit A counter, 13-bit B counter, programmable reference divider, and dual-modulus prescaler, allowing the designer to translate a stable reference into the required channel frequency. The charge pump at pin 2 drives an external loop filter, while the manufacturer’s worked example targets 45 degrees of phase margin. Designers should calculate loop-filter values for the actual reference and counter settings, minimize charge-pump trace length, and verify phase noise, spurs, lock range, and image-rejection performance after PCB assembly.
Được đề xuất
Wireless Transmitter Upconversion
Use the ADF4107BCPZ as the programmable local-oscillator element in a transmitter upconversion chain when the synthesized carrier is no higher than 7 GHz. The phase-frequency detector and precision charge pump compare the divided feedback signal with the reference, while the programmable A and B counters establish the division ratio. This architecture supports stable carrier generation for RF modulation stages. The external loop-filter implementation is a decisive design element because it determines phase margin, acquisition behavior, phase noise, and spurious output. Keep the charge-pump path compact, maintain a quiet reference connection, and validate output power and unwanted products under worst-case channel and temperature conditions.
Được đề xuất
RF Downconversion Local Oscillator
The ADF4107BCPZ can supply the local-oscillator reference used to translate an RF signal down to a lower intermediate frequency. A 7 GHz maximum synthesized frequency accommodates many wireless receive and transmit bands, while integer-N programming lets the channel plan be adjusted through the reference divider, prescaler, and counter ratios. Performance depends on achieving a clean, low-noise loop and correctly choosing the external filter. Use the manufacturer’s loop-design equations with the intended prescaler and counters, provide a low-noise reference, isolate noisy digital and switching circuitry, and test lock reliability across the full required tuning range.
Được đề xuất
Programmable RF Test Signal Source
The ADF4107BCPZ is useful in test equipment that requires a programmable RF local oscillator for receiver, transmitter, or conversion-chain testing. Its integrated phase-frequency detector, precision charge pump, reference divider, A and B counters, and dual-modulus prescaler reduce the number of separate frequency-generation blocks. The manufacturer reports a typical phase-noise example of -83 dBc/Hz at 1 kHz offset and spurs better than -70 dBc. To reproduce this performance, calculate the loop filter for every operating mode, control reference noise, maintain short ground returns, and verify channel-to-channel switching, settling behavior, and spur levels across the complete instrument bandwidth.
Được đề xuất
Intermediate-Frequency Generator
The ADF4107BCPZ can generate a programmable intermediate-frequency signal for communication equipment and RF test fixtures. The programmable reference divider and dual-modulus prescaler support multiple integer-N relationships between the low-frequency reference and desired RF output. Because the loop filter connects directly to the charge-pump output at pin 2, component placement and value selection are central to achieving stable locking and low phase noise. Use symmetrical filter routing, a quiet reference source, adequate supply bypassing, and a solid ground plane. Confirm phase margin with the manufacturer method and test acquisition, hold, and frequency accuracy over temperature and supply variation.
Được đề xuất
Industrial RF Instrumentation
The ADF4107BCPZ supports programmable RF excitation and conversion functions in industrial instrumentation. Its 7 GHz range is appropriate for systems operating below that ceiling, while the counter architecture permits repeatable channel selection under digital control. The part is most useful when predictable phase noise and spur behavior are more important than the flexibility and efficiency of a fractional-N or direct-DDS architecture. Design the loop filter from the intended reference and division ratios, use low-tolerance components where tuning accuracy matters, separate sensitive RF paths from switching nodes, and qualify the complete assembly for temperature drift, vibration, and repeated frequency changes.
Được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADF4107BCPZ — 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 | ADF4106 | ADF4108 | ADF4109 |
|---|---|---|---|---|
| Package | 20-lead WFQFN exposed-pad CSP | 20-lead WFQFN exposed-pad CSP | 20-lead WFQFN exposed-pad CSP | 20-lead WFQFN exposed-pad CSP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Maximum Synthesized Frequency | 7 GHz | Approximately 6 GHz | Approximately 8 GHz | Approximately 10 GHz |
| Frequency Difference from ADF4107 | Baseline: 7 GHz | -1 GHz (-14.3%) | +1 GHz (+14.3%) | +3 GHz (+42.9%) |
| Synthesizer Architecture | Integer-N PLL | Integer-N PLL | Integer-N PLL | Integer-N PLL |
| A Counter Resolution | 6 bits | 6 bits | 6 bits | 6 bits |
| B Counter Resolution | 13 bits | 13 bits | 13 bits | 13 bits |
| Charge-Pump Output | Pin 2 | Pin 2 | Pin 2 | Pin 2 |
| Prescaler Structure | P/P + 1 dual-modulus prescaler | P/P + 1 dual-modulus prescaler | P/P + 1 dual-modulus prescaler | P/P + 1 dual-modulus prescaler |
Bảo phân biệt quan trọng
- Exact 7 GHz family limit between the lower- and higher-frequency alternatives (vsADF4108)
- Maintains the required 7 GHz ceiling when the ADF4106 is insufficient (vsADF4106)
- Avoids unnecessary upper-range expansion in qualified RF designs (vsADF4109)
Ghi chú thiết kế
Route the charge-pump output from pin 2 directly to the loop-filter network with a short, symmetrical path. Keep the filter away from clocks, switching regulators, high-current return paths, and digital control lines. A compact layout reduces parasitic capacitance and board-induced noise pickup that can alter phase margin, increase spurs, or impair reliable locking.
Use the supply-bypass and exposed-pad connection specified in the Analog Devices ADF4107 datasheet. Place the decoupling capacitor close to the supply and ground pins, provide an uninterrupted ground reference, and connect the exposed pad using the package’s recommended land pattern and thermal-via arrangement. Adequate low-impedance supply return is important because supply disturbance can appear directly in phase noise and spur performance.
Do not reuse one loop-filter calculation across all channels or prescaler settings. The manufacturer’s worked design targets 45 degrees of phase margin, so recalculate component values for each reference frequency, A and B counter combination, and prescaler division ratio. Also verify the minimum and maximum synthesized frequencies; a device can remain below its upper limit while still being unable to produce a requested channel because of integer-N ratio constraints.
Keep the reference input and RF output paths away from the charge-pump and loop-filter region. Use a low-noise reference source, short return paths, and controlled impedance where output matching is required. Test reference sensitivity and unwanted products with the final clock distribution and power-conversion circuitry present because switching noise or ground-current coupling can degrade otherwise acceptable standalone phase noise.
Estimated: confirm junction temperature using the actual dissipation, package thermal data, PCB copper area, and ambient temperature; the required values are not stated in the available technical summary. Treat this as an application calculation rather than a fixed operating limit. Provide the exposed pad with the recommended via pattern and adequate copper so temperature rise remains inside the manufacturer’s device rating under maximum channel activity.
Thông tin tuân thủ
The manufacturer product page and datasheet identify the ADF4107 as a production device, but the available material does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Confirm current declarations with Analog Devices before release.
