SI4126-F-BM - 2.3 GHz RF Synthesizer | Skyworks
料号： SI4126-F-BM ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
SI4126-F-BM 概述
A frequency synthesizer is a timing and RF signal-generation component that uses a phase-locked loop to create an output frequency referenced to a stable external source. In the wireless-communications hierarchy, this device belongs to RF and wireless clock and timing ICs rather than a general-purpose clock generator. Its PLL-based architecture supports programmable frequency synthesis for RF and IF signal paths.
The verified data specifies a 2.3 GHz maximum frequency, one RF output, a 2.7 V to 3.6 V operating supply range as stated in the available product overview, and a 28-VFQFN exposed-pad package. The family-level description also reports low phase noise and minimal external-component requirements. These characteristics make the part relevant to compact RF systems where local frequency generation is needed instead of a fixed-frequency oscillator.
The SI4136-family architecture uses three VCOs, loop filters, reference and VCO dividers, and phase detectors, with divider and power-down settings programmable through a three-wire serial interface. The available source material describes dual-band RF synthesis and integration of VCOs, loop filters, varactors, and resonators, reducing the number of discrete frequency-generation components required around the IC.
Typical use cases include wireless transceivers, RF modems, ISM-band equipment, IF/RF synthesis, and embedded radio systems. The part may also be considered for test equipment or communication modules requiring a programmable RF reference. Final suitability depends on the required output frequency, reference input, loop-filter implementation, supply sequencing, and board-level RF layout.
Designers should follow the manufacturer datasheet for the exact pin assignments, recommended reference components, VCO configuration, exposed-pad land pattern, and decoupling network. Because the verified material does not provide a complete electrical table or an explicit package-body drawing in the supplied fields, parameters such as phase-noise profiles, output power, temperature range, and absolute maximum ratings require confirmation from the manufacturer documentation.
This product page consolidates the verified distributor specifications, source URLs, package identity, and design caveats so engineers can distinguish a genuine RF synthesizer replacement from a merely similar clock or PLL component.
直接替换替代料： SI4126-F-BM ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： SI4126-F-BM （相同外形与封装尺寸） ——差异在于 Package.
快速对比工具——选择替代料号进行并排对比：
该产品暂无直接替换替代料。
请求替代料SI4126-F-BM 规格参数
| Product Type | Frequency Synthesizer IC |
| Maximum Stated Frequency | 2.3 GHz |
| RF Output Count | 1 |
| Supply Voltage Range | 2.7 V to 3.6 V |
| 封装 | 28-VFQFN exposed pad |
| Package Family | VQFN surface-mount package |
| VCO Architecture | Integrated VCOs |
| VCO Count | 3 VCOs |
| Phase-Locked-Loop Functions | Phase detectors and loop filters |
| Divider Functions | Reference divider and VCO divider |
| Programming Interface | Three-wire serial interface |
| Programmable Functions | Divider and power-down settings |
| Integrated RF Functions | VCOs, loop filters, varactors, and resonators |
| Typical Supply Current | 25.7 mA |
| Standby Current | 5 uA |
| Phase Noise | Low phase noise; exact values not provided |
| Input Reference | Crystal input supported |
| Input-to-Output Ratio | Configurable ratio of 1:2 |
| 安装类型 | Surface mount |
| Application Category | Wireless communications RF and IF synthesis |
SI4126-F-BM vqfn surface-mount package 引脚配置指南
SI4126-F-BM（vqfn surface-mount package 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： SI4126-F-BM.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SI4126-F-BM 适用于 6 应用s: Wireless RF Transceiver, ISM-Band Radio Equipment, RF Modem Signal Source, Programmable IF Generator, Compact Communication Module, RF Test and Measurement Equipment.
Wireless RF Transceiver
The SI4126-F-BM fits wireless RF transceiver designs that need programmable local frequency generation instead of a fixed-frequency source. Its verified maximum frequency of 2.3 GHz, one RF output, and integrated VCO-based synthesizer architecture make it appropriate for RF signal paths that are programmable through the three-wire serial interface. The design can place the synthesizer near the RF section and use the reference input to establish the local oscillator or IF-related signal. Key checks are the required channel frequency range, reference-clock quality, phase-noise margin, output power, and exposed-pad grounding.
推荐
ISM-Band Radio Equipment
The SI4126-F-BM is explicitly associated with ISM RF synthesis for wireless communications, making it relevant to radios operating in ISM frequency bands. The integrated VCO, loop filter, resonator, and divider functions reduce the external component count compared with a discrete synthesizer implementation. A designer can use the three-wire interface to configure divider and power-down settings during startup or channel changes. Because the verified material does not state every band-edge frequency or output-power condition, the final channel plan and regulatory limits must be checked against the complete manufacturer datasheet.
推荐
RF Modem Signal Source
The SI4126-F-BM can support RF modem designs that require a programmable synthesis source for transmit or receive signal chains. Its one-output configuration is useful when a separate reference architecture supplies other system clocks. The integrated phase detectors, loop filters, and VCO blocks provide a compact foundation for RF frequency generation, while the 2.7 V to 3.6 V supply range fits low-voltage system rails. Engineers should verify output amplitude, spur performance, reference ratio, settling time, and coexistence requirements before selecting the device for a production modem.
推荐
Programmable IF Generator
The SI4126-F-BM is described in the family material as performing both IF and RF synthesis for wireless communications. This makes it suitable for communication blocks that generate a programmable intermediate-frequency or related local reference. Its integrated dividers and phase detectors help establish the PLL relationship between the reference input and synthesized output. The design should account for divider ratios, loop bandwidth, reference multiplication, spur filtering, and output drive into the next RF or baseband stage. The verified snippets do not provide settling-time or spur figures, so these must be obtained from the datasheet.
推荐
Compact Communication Module
The SI4126-F-BM is useful in compact wireless modules where board area and external RF-generation components are constrained. Integrating VCOs, resonators, varactors, loop filters, and phase detectors can reduce component count compared with a discrete implementation, while the 28-VFQFN exposed-pad package supports dense surface-mount assembly. The exposed pad must be connected according to the manufacturer land pattern and thermal design. RF trace impedance, reference-clock isolation, supply decoupling, and enclosure effects should be evaluated together because each can influence phase noise and channel performance.
推荐
RF Test and Measurement Equipment
The SI4126-F-BM can serve as the RF synthesis element in test equipment that requires a programmable local oscillator or communication-band reference. Its one RF output and 2.3 GHz maximum stated frequency allow a controlled source to be integrated into a compact instrument architecture. The reference input and three-wire programming interface allow the system controller to select operating states and divider settings. Instrument designers must still validate output level, calibration method, phase-noise contribution, spur performance, and reference accuracy. The verified snippets do not provide those instrument-grade limits, so use the manufacturer documentation before making measurement-accuracy claims.
推荐
推荐产品汇总
工程参考数据： SI4126-F-BM ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 |
|---|---|
| Brand | Skyworks Solutions |
| Package | 28-VFQFN exposed pad |
| Product Type | Frequency Synthesizer IC |
| Maximum Stated Frequency | 2.3 GHz |
| RF Output Count | 1 |
| Supply Voltage Range | 2.7 V to 3.6 V |
| VCO Architecture | Integrated VCOs |
| Programming Interface | Three-wire serial interface |
| Typical Supply Current | 25.7 mA |
| Standby Current | 5 uA |
关键差异点
- Integrated RF synthesizer architecture （对比 SI4126-F-GM)
- Verified RF output configuration （对比 SI4126-F-GM)
- Low-voltage supply operation （对比 SI4126-F-GM)
设计说明
Keep the reference, control, supply, and RF connections short and route them according to the manufacturer reference layout. The exposed pad is part of the electrical and thermal design; use the recommended land pattern, connect it as directed by the datasheet, and maintain a low-impedance return path beneath the device. Avoid placing noisy switching nodes or high-current return paths adjacent to the reference and VCO connections.
Provide local supply decoupling at the device pins and verify the bypass network against the manufacturer's recommended values. The available material reports a 2.7 V to 3.6 V supply range, 25.7 mA typical supply current, and 5 uA standby current, but these values do not replace worst-case current and voltage-drop calculations. Confirm startup, shutdown, and power-sequencing behavior in the complete datasheet.
Treat the reference clock and synthesized RF output as controlled RF signals. Use short traces, controlled impedance where appropriate, and an output network selected for the target frequency and load. Validate reference jitter, loop-filter settings, divider ratios, output spurs, and phase noise in the final PCB because none of those values is established by the supplied snippets.
Do not treat SI4126-F-BM as a generic fixed-frequency oscillator or assume that a family-related MPN is pin-compatible. The complete pinout, register map, frequency limits, electrical ratings, and exposed-pad requirements must be checked for the exact ordering code. If a replacement is proposed, compare package dimensions, pin assignments, programming protocol, supply range, RF output behavior, and application circuit requirements.
合规信息
The supplied verified web results identify the manufacturer, package, frequency, output count, and some operating information, but they do not provide compliance declarations. Compliance status must be confirmed with the current manufacturer product documentation or supplier records.
