SI4133-D-GM - Triple-VCO 1.72GHz RF Synthesizer | Silicon Labs
料号： SI4133-D-GM ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.3339 | $3.33 |
| 10 | $3.3339 | $33.34 |
| 100 | $3.3339 | $333.39 |
| 500 | $3.3339 | $1,666.95 |
| 1,000 | $3.3339 | $3,333.90 |
SI4133-D-GM 概述
An RF frequency synthesizer is a phase-locked-loop timing and RF component that generates a programmable output from a stable reference. The Si4133 combines IF synthesis with dual-band RF synthesis, placing it in the RF synthesizer, PLL, clock-generation, and wireless-communications equipment hierarchy. Its integrated VCOs eliminate separate external VCO and varactor assemblies in suitable designs.
The device supports three synthesizer circuits, programmable power-down modes, low phase noise, and a 1 uA standby current. According to the manufacturer product information, it targets price-sensitive, low-power, high-performance personal wireless communications while reducing passive-component count and improving power efficiency. LCSC lists a starting price of $3.3339 as of 2026-10-22.
The listed operating supply range is 2.7 V to 3.6 V. The manufacturer describes low-noise IF and dual-band RF synthesis, while distributor data identifies the output capability as up to 1.72 GHz. The exposed pad supports heat transfer to the PCB, but loop-filter values, VCO tuning range details, phase-noise plots, and complete timing specifications must be taken from the manufacturer datasheet rather than inferred from distributor summaries.
Typical uses include wireless personal-communications equipment, IF/RF up-conversion systems, dual-band transmitters, low-power radio designs, and compact RF modules. System designers should preserve clean reference routing, provide compliant loop filtering, decouple the supply, and connect the exposed pad to the recommended thermal and ground-plane layout.
A design tradeoff is integration versus program flexibility: integrating three VCOs, dividers, filters, and detectors simplifies RF assembly, but the planner must still account for lock-time, spur, tuning-range, reference-noise, and thermal requirements for the intended band. Verify all band-specific constraints against the official datasheet.
This page consolidates manufacturer and distributor information, verified source links, application guidance, and replacement screening into an engineering-focused summary. Because the supplied data does not establish several detailed electrical limits or lifecycle classifications, those fields remain explicitly marked rather than guessed.
直接替换替代料： SI4133-D-GM ——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： SI4133-D-GM （相同外形与封装尺寸） ——差异在于 Mounting Type, Package, Product Type, Number of Circuits, Integrated VCO Count.
快速对比工具——选择替代料号进行并排对比：
SI4133-D-GMR
✅ 直接替换📋 参考替代料（不在目录中）
SI4133-D-GM 规格参数
| Product Type | IF and dual-band RF frequency synthesizer IC |
| Number of Circuits | 3 circuits |
| Maximum Input Frequency | 26 MHz |
| Minimum Input Frequency | 2 MHz |
| Maximum Output Frequency | 1.72 GHz |
| Supply Voltage Range | 2.7 V to 3.6 V |
| Integrated VCO Count | 3 VCOs |
| Integrated Blocks | 3 loop filters, reference divider, VCO dividers, and phase detectors |
| Standby Current | 1 uA |
| Power-Down Modes | Programmable |
| 工作温度范围 | -40 C to +85 C |
| 封装 | QFN-28 with exposed pad |
| 引脚数量 | 28 pins |
| 安装类型 | Surface-mount |
| Manufacturer Category | Phase Locked Loops (PLL) |
| RoHS 状态 | unknown |
| REACH Status | unknown |
SI4133-D-GM qfn-28 with exposed pad 引脚配置指南
SI4133-D-GM（qfn-28 with exposed pad 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： SI4133-D-GM.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SI4133-D-GM 适用于 6 应用s: Wireless Personal Communications, Dual-Band RF Transmitter, IF and RF Up-Conversion, Low-Power Wireless Module, RF Test and Measurement, Industrial Radio Control.
Wireless Personal Communications
The SI4133-D-GM fits wireless personal-communications equipment because it performs IF and dual-band RF synthesis in one IC while integrating three VCOs, loop filters, dividers, and phase detectors. The 2.7 V to 3.6 V operating range suits 3.3 V-class systems, while programmable shutdown supports duty-cycled radios. Integration can reduce external VCO, varactor, and passive-component count. Designers must still validate each required output band, lock behavior, reference plan, and supply-noise margin against the official datasheet before layout release.
推荐
Dual-Band RF Transmitter
The SI4133-D-GM is applicable to dual-band RF transmitters because the manufacturer identifies dual-band RF synthesis and three integrated VCO circuits. A transmitter can use the synthesizer for programmable local-oscillator generation while retaining the IF synthesis path, reducing the number of discrete frequency-generation blocks. The verified output capability reaches 1.72 GHz and reference input spans 2 MHz to 26 MHz. Exact channel plans require confirmation of VCO ranges, channel spacing, lock time, spur performance, and output-drive limits.
推荐
IF and RF Up-Conversion
For IF-to-RF up-conversion, the SI4133-D-GM combines IF synthesis with RF synthesis and includes reference and VCO dividers plus phase detectors. This integration can simplify a compact RF signal chain by avoiding separate external VCO and varactor implementations. The device operates from a 2.7 V to 3.6 V supply and supports output operation up to 1.72 GHz according to distributor data. The RF layout must control reference spurs, loop-filter noise, supply coupling, and exposed-pad thermal return paths.
推荐
Low-Power Wireless Module
The SI4133-D-GM supports low-power wireless-module designs through programmable power-down modes and a listed 1 uA standby current. Its integrated synthesis blocks reduce external components, helping conserve board area and assembly effort. The manufacturer targets personal wireless systems where low power and cost are important. Active operating current is not present in the supplied snippets, so battery-life calculations must use the complete datasheet operating profile and the module's actual lock-cycle duty cycle.
推荐
RF Test and Measurement
The SI4133-D-GM can generate programmable IF and RF frequencies for compact test equipment when its specified tuning ranges meet the instrument requirement. Three integrated VCOs allow multi-range synthesis without three separate external VCO assemblies, while integrated filters and phase detectors support a compact implementation. Reference integrity becomes especially important because phase noise and spur behavior propagate into measurement accuracy. Confirm calibration paths, lock-time requirements, output power, and channel resolution before selecting it.
推荐
Industrial Radio Control
The SI4133-D-GM is suitable for industrial radio-control systems requiring IF and RF synthesis from a common reference domain. Programmable shutdown can assist power management, and the -40 C to +85 C listed operating range covers many industrial environments. The integrated VCO architecture may reduce assembly complexity compared with discrete frequency-generation circuits. Engineers should verify RF regulatory constraints, temperature-specific phase-noise behavior, grounding, reference isolation, and all absolute-maximum limits before industrial deployment.
推荐
推荐产品汇总
工程参考数据： SI4133-D-GM ——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 | SI4133-D-GMR | SI4133-BT |
|---|---|---|---|
| Package | QFN-28 with exposed pad | QFN-28 | TSSOP-24 / QFN-28 variants listed; exact SI4133-BT package requires verification |
| Brand | Silicon Labs | Silicon Labs | Silicon Labs |
| Product Type | IF and dual-band RF synthesizer | PLL frequency synthesizer | Si4133-family PLL/RF synthesizer |
关键差异点
- Integrated triple-VCO RF synthesis （对比 SI4133-D-GMR)
- IF and dual-band synthesis in one device （对比 SI4133-BT)
- Reduced external RF component count （对比 Discrete VCO and varactor implementation)
- Power-conscious wireless operation （对比 Continuously powered discrete synthesizer)
设计说明
Route the reference clock as a short, controlled-impedance trace and keep it away from synthesizer outputs and switching-node return currents. Because reference phase noise can multiply through the PLL and appear as close-in phase noise or spurs, use the manufacturer's recommended grounding and decoupling topology. Place supply bypass capacitance at the relevant pins and provide a continuous return path beneath the exposed-pad region.
The QFN exposed pad is the primary thermal and electrical land feature. Follow the official package drawing for pad dimensions, solder mask, paste, via count, and net assignment. Thermal performance depends on the PCB stack-up and copper area, so do not infer junction temperature from package size alone. Validate hot-lock operation across ambient temperature and the highest intended RF activity.
Keep RF output routing compact and match it to the intended 50-ohm interface using the manufacturer reference layout where available. Avoid coupling output and reference traces, maintain continuous ground references, and isolate control buses from sensitive RF paths. Review loop-filter component placement carefully because poor grounding or trace inductance can degrade phase noise and spur behavior even when the nominal component values are correct.
Do not treat package similarity as proof of interchangeability. Confirm every pin, supply limit, exposed-pad connection, programming register, frequency boundary, and absolute maximum before replacing SI4133-D-GM. In particular, SI4133-BT includes package variants that do not necessarily match this QFN-28 footprint. Also avoid extending the verified 1.72 GHz listing into unsupported VCO ranges without consulting the official tuning tables.
合规信息
The supplied distributor page mentions RoHS but provides no explicit compliant or non-compliant declaration. AEC-Q100 is treated as not applicable because no automotive qualification claim is supplied; this field should not be interpreted as an automotive approval.
