SI4134T-GM - 1.99 GHz Dual Frequency Synthesizer | Silicon Labs
料号： SI4134T-GM ✓ 量产中SI4134T-GM 概述
A frequency synthesizer is a clock-and-timing IC that derives one or more stable output frequencies from a reference source. Its product hierarchy is frequency synthesizer → PLL synthesizer → clock generator → clock and timing IC → semiconductor. Unlike a simple crystal oscillator, an active frequency synthesizer supports programmable multiplication, phase adjustment, and integrated clock-generation functions within one package.
The verified manufacturer and distributor data identify a maximum operating frequency of 1.99 GHz, a dual configuration, an input-to-output ratio of 1:2, and an integrated DCXO. These features make the SI4134T-GM useful where a system requires controlled high-frequency clocks derived from a lower-frequency reference. The exact divider settings, phase-noise values, temperature range, and output specifications are not present in the supplied verified data and therefore require confirmation from the manufacturer datasheet.
The device operates from a 2.7 V to 3 V supply, placing it in the low-voltage domain of programmable logic and communication equipment. A dedicated analog supply arrangement is characteristic of clock-generator designs, but the supplied search results do not identify individual supply pins or recommended capacitor values. Those details should be taken directly from the SI4134 datasheet before schematic capture.
Typical uses include RF and baseband transceiver clocking, data-converter clock generation, wireless communication modules, instrumentation, and test equipment. In these systems, the SI4134T-GM can provide multiple related clock outputs from a common reference while reducing the number of separate oscillators required. Its 1.99 GHz ceiling provides headroom for high-speed digital and RF signal chains.
When designing a replacement board, preserve the 32-VFQFN exposed-pad land pattern and verify pin-to-pin assignments, supply sequencing, reference amplitude, loop-filter components, and output termination. A 5 mm by 5 mm package supports compact placement, but its exposed pad requires careful thermal and layout design. The supplied evidence identifies SI4134T-BM as a closely related same-package family member, while the verified SI4134T-BM cross-reference does not establish its complete electrical equivalence.
This page consolidates verified distributor specifications, source links, same-family cross-reference information, and practical integration guidance. It separates confirmed facts from unavailable parameters, helping engineers evaluate the SI4134T-GM for clock-generation designs without treating unverified electrical details as guaranteed specifications.
直接替换替代料： SI4134T-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： SI4134T-GM （相同外形与封装尺寸） ——差异在于 Package.
SI4134T-BM
✅ 直接替换联系询价
查看数据手册 →SI4134T-GM 规格参数
| Product Type | Dual frequency synthesizer IC with DCXO |
| Maximum Frequency | 1.99 GHz |
| Supply Voltage Range | 2.7 V to 3 V |
| 输出数量 | 2 outputs |
| Input-to-Output Ratio | 1:2 |
| 封装 | 32-VFQFN exposed pad |
| Package Dimensions | 5 mm x 5 mm |
| Series | AERO+ |
| 安装类型 | Surface mount |
SI4134T-GM 5 mm x 5 mm 引脚配置指南
SI4134T-GM（5 mm x 5 mm 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： SI4134T-GM.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SI4134T-GM 适用于 6 应用s: RF and Baseband Transceiver Clocks, Data Converter and ADC Clocking, Wireless Communication Modules, Industrial Test and Measurement Equipment, Clock Distribution for High-Speed Logic, Low-Voltage Processor and Sensor Platforms.
RF and Baseband Transceiver Clocks
The SI4134T-GM fits RF and baseband transceiver clocking because its confirmed maximum frequency is 1.99 GHz and it combines dual frequency synthesis with a DCXO in one 32-VFQFN package. The device can supply related clock outputs from a common low-frequency reference, reducing the number of separate clock oscillators required by the RF signal chain. Its confirmed 1:2 input-to-output ratio also provides a straightforward starting point for architectures that require doubled clock frequencies. Because the supplied data does not include phase-noise, jitter, divider-resolution, or output-drive curves, those parameters must be checked in the SI4134 datasheet before fixing channel spacing and receiver sensitivity.
推荐
Data Converter and ADC Clocking
The SI4134T-GM is a candidate for data-converter clock generation because it supports programmable synthesis up to 1.99 GHz and includes two outputs in a compact 5 mm by 5 mm surface-mount package. A common reference can be multiplied and distributed to sampling or conversion circuitry, helping synchronize related channels without separate oscillators. The dual-output architecture can reduce clock-tree complexity when the two derived clocks have compatible phase relationships. Designers must still verify output jitter, edge fidelity, supply sensitivity, and output logic levels in the manufacturer datasheet, because those timing parameters are not included in the supplied verified data.
推荐
Wireless Communication Modules
The SI4134T-GM supports wireless-module clock architectures requiring multiple related frequencies from a stable reference. Its dual synthesizer, integrated DCXO, 1.99 GHz maximum frequency, and 2.7 V to 3 V operating range are compatible with compact RF and baseband subsystems. Integrating synthesis and DCXO functions can simplify board partitioning while reducing discrete oscillator count. For production design, engineers should confirm reference-input sensitivity, frequency accuracy over temperature, phase noise, and PLL lock behavior against the manufacturer documentation because these values are not specified in the retrieved distributor snippets.
推荐
Industrial Test and Measurement Equipment
The SI4134T-GM is suitable for compact test and measurement instruments that derive multiple internal clocks from a shared reference. The confirmed 1.99 GHz maximum frequency covers high-speed acquisition and conversion clocking, while the dual architecture can simplify distribution across measurement channels. A 5 mm by 5 mm QFN package also supports dense instrument designs. The decisive qualifications for this use case are reference phase noise, synthesizer jitter, output level, lock time, and temperature stability. None of those detailed values appears in the supplied verified results, so instrument designers must validate them from the official datasheet before committing to the architecture.
推荐
Clock Distribution for High-Speed Logic
The SI4134T-GM can form the programmable source stage of a high-speed logic clock tree. Its dual outputs and 1.99 GHz maximum synthesis frequency allow a common reference to feed two related domains, while the integrated DCXO supports local frequency generation. This arrangement is useful when a board needs more flexibility than a fixed crystal oscillator provides. Output buffers may still be required for fan-out, isolation, or impedance matching. Because output amplitude, edge rate, duty-cycle distortion, and channel-to-channel skew are not provided in the verified snippets, the design should reserve those checks for the manufacturer timing specifications.
推荐
Low-Voltage Processor and Sensor Platforms
The SI4134T-GM can support compact embedded platforms that require a programmable clock in addition to a processor reference clock. Its 2.7 V to 3 V supply range aligns with low-voltage digital systems, while dual synthesis and an integrated DCXO provide design flexibility in space-constrained boards. The part can be considered for sensor, controller, and communications subsystems where multiple related frequencies are needed. Its footprint remains compact at 5 mm by 5 mm, but exposed-pad layout and return-path design are essential for clean clocking. Verify current consumption, output compatibility, and startup behavior because those electrical details are not available in the supplied verified data.
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推荐产品汇总
工程参考数据： SI4134T-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 | SI4134T-BM |
|---|---|---|
| Brand | Silicon Labs | Silicon Labs |
| Package | 32-MLP (5x5) | 32-MLP (5x5), same package |
| Product Type | Frequency Synthesizer IC | Frequency Synthesizer IC |
| Maximum Frequency | 1.99 GHz | 1.99 GHz |
| Number of Outputs | Dual | Dual |
| DCXO | Integrated | Integrated |
| Series | AERO+ | AERO+ |
关键差异点
- Dual synthesis with integrated DCXO （对比 SI4134T-BM)
- Maximum-frequency alignment （对比 SI4134T-BM)
- Matching mechanical footprint （对比 SI4134T-BM)
设计说明
Use the manufacturer 32-VFQFN exposed-pad footprint exactly and provide a low-impedance ground connection beneath the pad. Keep reference and loop-filter connections short, place decoupling capacitors at the specified supply pins, and avoid routing the sensitive reference path beside switching nodes. The supplied data confirms the 5 mm by 5 mm QFN-32 format but does not provide the recommended land pattern, so obtain that geometry from the official package drawing rather than scaling a generic QFN footprint.
Design the 2.7 V to 3 V supply network for the exact analog and digital rail arrangement required by the SI4134 datasheet. Place local high-frequency decoupling at the device and isolate the reference supply from noisy switching currents where the recommended application circuit permits it. Because supply-current limits, sequencing requirements, and capacitor values are not present in the verified snippets, do not finalize the power tree until those parameters are confirmed from the manufacturer documentation.
Treat reference, feedback, and clock outputs as high-speed signals even though the SI4134T-GM operates from a 2.7 V to 3 V supply. Use a continuous return plane, minimize stub branches, and apply source-termination or impedance-control methods appropriate to the actual output impedance. The verified results do not specify output amplitude, edge rate, jitter, or impedance, so edge-rate and termination calculations require the complete timing specifications.
Do not treat the SI4134T-BM cross-reference result as proof that it is electrically or register-compatible with the SI4134T-GM. Compare ordering-code decoding, temperature grade, pin names, reference input, divider tables, PLL loop filters, output mapping, and programming registers. A same-package 32-MLP outline can fit the PCB mechanically while still requiring software or schematic changes, so qualification must cover both hardware and control behavior.
合规信息
The supplied search results mention lead-free construction for the related family, but they do not provide an explicit compliance declaration for SI4134T-GM. All specific compliance fields therefore remain unknown.
