ADF4118BRU - 3 GHz Integer-N RF PLL | Analog Devices
MPN: ADF4118BRU ✓ Hoạt độngADF4118BRU Tóm tắt
An RF PLL is a clock-and-timing integrated circuit that locks a voltage-controlled oscillator to a stable reference frequency. The ADF4118 family combines a low-noise digital phase-frequency detector, precision charge pump, programmable reference divider, programmable A and B counters, and a dual-modulus prescaler. This hierarchy places it under frequency synthesizers, clock and timing ICs, and semiconductor components used to control RF oscillators.
The verified product classification identifies one RF PLL channel, integer-N synthesis, a maximum operating frequency of 3 GHz, and a 16-pin TSSOP package measuring 0.173 inch wide by 4.40 mm. Its programmable architecture supports local-oscillator generation in up-conversion and down-conversion sections of wireless receivers and transmitters. The precision charge-pump output drives an external loop filter, while the divided reference and counter paths establish the target synthesis ratio.
The ADF4118 family architecture supports integer-N frequency synthesis by comparing the divided oscillator signal with a divided reference. Designers select divider and counter values, then calculate loop-filter components according to the Analog Devices family datasheet. This architecture is useful when a stable system reference is available and the required local-oscillator frequency must be generated with programmable division. It is not a general-purpose clock generator for applications where the output frequency is fixed and no feedback loop is required.
Typical uses include wireless transmitter local oscillators, wireless receiver down-conversion, up-conversion mixers, and other RF signal chains that require synthesized frequencies. The 3 GHz capability is appropriate for RF systems whose local-oscillator requirements fall within the device range. Final suitability depends on reference frequency, prescaler settings, counter limits, loop-filter design, output buffering, and compliance with the manufacturer’s recommended operating conditions.
For PCB implementation, keep the charge-pump trace and loop-filter components close to the device, maintain short RF paths, and use a controlled reference signal. The external loop filter is part of the frequency-control system; changing its resistance or capacitance can alter loop dynamics, phase margin, and spur performance. Designers should review the family datasheet and application guidance before fixing component values.
This page combines the verified manufacturer classification, distributor package and pricing information, and cross-reference findings with practical selection guidance. It distinguishes confirmed data from specifications that require direct confirmation from the current Analog Devices datasheet, helping engineers identify the correct PLL family and package without confusing similar ADF4110 or ADF4154 devices.
Bộ thay thế dễ dàng lắp đặt cho ADF4118BRU — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
ADF4118BRUZ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADF4118BRUZ-RL7
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADF4118BRU Thông số kỹ thuật
| Product Type | RF PLL frequency synthesizer |
| Synthesis Architecture | Single, Integer-N |
| Number of Circuits | 1 circuit |
| Maximum Frequency | 3.0 GHz |
| Prescaler | Dual-modulus P/P+1 |
| Phase Detector | Low-noise digital PFD |
| Charge Pump | Precision charge pump |
| Reference Divider | Programmable |
| A Counter | Programmable |
| B Counter | Programmable |
| Hộp | 16-TSSOP, 0.173 inch width, 4.40 mm width |
| Kiểu lắp đặt | Surface mount |
| Trạng thái vòng đời | Production |
| Số chân | 16 pins |
Hướng dẫn cấu hình chân ADF4118BRU 16-tssop, 0.173 inch width, 4.40 mm width
Cấu hình chân cho ADF4118BRU (16-tssop, 0.173 inch width, 4.40 mm width 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 ADF4118BRU.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
ADF4118BRU phù hợp cho 6 Áp dụngs: Wireless Transmitter Local Oscillator, Wireless Receiver Down-Conversion, RF Up-Conversion Mixer, Programmable RF Signal Source, RF Communication Test Equipment, Industrial RF Control Module.
Wireless Transmitter Local Oscillator
The ADF4118BRU fits a wireless transmitter local-oscillator position because the Analog Devices family is explicitly intended for up-conversion and down-conversion sections of wireless transmitters and receivers. Its single, integer-N architecture uses programmable reference division, A and B counters, and a dual-modulus prescaler to generate the oscillator frequency required by a mixer. The verified device class supports frequencies up to 3.0 GHz. Designers should place the charge-pump output and loop-filter components close to the IC, provide a clean reference source, and calculate loop dynamics for the intended prescaler and divider values.
Được đề xuất
Wireless Receiver Down-Conversion
ADF4118BRU is suitable for a receiver down-conversion local oscillator when the system requires a programmable RF reference rather than a fixed crystal oscillator. The family’s programmable reference divider and A/B counters work with a dual-modulus prescaler to establish the required synthesis ratio, while the precision charge pump drives the external loop filter. The 3.0 GHz maximum frequency makes it relevant to RF receiver chains, although the exact usable range and reference requirements must be confirmed for the target channel plan.
Được đề xuất
RF Up-Conversion Mixer
The ADF4118BRU can supply the programmable local-oscillator signal used by an RF up-conversion mixer in a wireless transmitter. Its integer-N synthesis architecture allows the designer to derive the required oscillator frequency from a stable reference through programmable dividers and counters. The charge-pump output must be connected to an external loop filter, and the RF output path should be kept compact to preserve signal integrity. The verified maximum frequency is 3.0 GHz, but actual suitability depends on the mixer’s required LO range and system reference.
Được đề xuất
Programmable RF Signal Source
ADF4118BRU can serve as the synthesizer element in a programmable RF signal source when the design needs a feedback-controlled oscillator rather than a fixed-frequency clock. The low-noise digital phase-frequency detector compares the divided output with the divided reference, and the programmable counter paths determine the synthesized ratio. Because the loop filter is external, engineers can tune loop bandwidth and phase margin for their particular reference and spur requirements. The 3 GHz classification supports RF-focused instruments, while non-RF clock applications require checking the exact device limits.
Được đề xuất
RF Communication Test Equipment
ADF4118BRU is relevant to RF communication test equipment that needs a programmable local-oscillator reference for calibration, tone generation, or mixer-driven measurements. Its single-channel integer-N architecture and programmable reference, A-counter, B-counter, and prescaler paths provide the basic synthesis functions required by a controlled RF test source. The external loop filter allows the designer to trade phase margin, settling behavior, and spur performance. For lab-grade equipment, the complete supply, reference, temperature, and calibration requirements still need to be checked in the current datasheet.
Được đề xuất
Industrial RF Control Module
ADF4118BRU can be considered for an industrial RF control module when the module requires a stable, programmable oscillator for RF sensing, remote-control, or communications circuitry. The part’s programmable frequency architecture allows a common reference and divider scheme to support multiple operating frequencies. Industrial use still requires checking the device’s verified operating-temperature range, supply limits, reference-noise requirements, and reliability constraints. The loop filter and RF routing should be designed together because a stable reference is not sufficient if the charge-pump path or output path introduces excessive noise.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADF4118BRU — 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 | ADF4118BRUZ | ADF4118BRUZ-RL7 |
|---|---|---|---|
| Package | 16-TSSOP, 0.173 inch, 4.40 mm width | 16-TSSOP | 16-TSSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices |
| Product Type | RF PLL frequency synthesizer | RF PLL frequency synthesizer | RF PLL frequency synthesizer |
| Maximum Frequency | 3.0 GHz | 3.0 GHz | 3.0 GHz |
| Architecture | Single, Integer-N | Single, Integer-N | Single, Integer-N |
| Number of Circuits | 1 circuit | 1 circuit | 1 circuit |
| Prescaler | Dual-modulus P/P+1 | Dual-modulus P/P+1 | Dual-modulus P/P+1 |
Bảo phân biệt quan trọng
- Verified RF PLL positioning (vsADF4118BRUZ)
- Same-family package compatibility (vsADF4118BRUZ-RL7)
- Programmable synthesis architecture (vsADF4118BRUZ)
Ghi chú thiết kế
Place the charge-pump output, loop-filter resistor, and feedback-path components close to the ADF4118BRU and the oscillator interface. Keep the loop-filter trace short and avoid routing it beside high-current switching nodes or noisy digital clocks. The external filter is part of the PLL control loop, so long traces and unintended parasitic capacitance can change damping, phase margin, and settling behavior.
Provide a clean, stable reference signal and keep the reference and RF feedback paths physically separated where practical. Use a controlled reference source and confirm the reference-divider settings required for the target synthesis ratio. Insufficient reference noise or coupling into the feedback path can appear as phase noise, spurs, or unreliable lock, even when the nominal output frequency is correct.
Do not select ADF4118BRU solely by its 3.0 GHz headline rating. Before layout release, confirm the reference frequency, prescaler range, A-counter and B-counter limits, supply voltage, operating temperature, and exact pinout in the current Analog Devices datasheet. Similar ADF4110 and ADF4154 parts should not be treated as drop-in replacements without a documented pin and parameter comparison.
Thông tin tuân thủ
The supplied verified data does not establish RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. The Analog Devices product page identifies the part as production, but compliance must be confirmed from the current manufacturer documentation.
