SI4113-BT - 1.8 GHz Dual-Band RF Synthesizer | Silicon Labs
MPN： SI4113-BT ✓ 啟用中SI4113-BT 概覽
A frequency synthesizer is a phase-locked-loop building block that derives or generates stable RF carrier signals from a reference frequency. In the broader semiconductor hierarchy, a frequency synthesizer is a clock-and-timing IC, a PLL-based RF synthesizer, and ultimately a semiconductor used to control wireless transmitters and receivers. The SI4113-BT integrates VCOs, loop filters, and related RF synthesis functions to reduce the external-component count required for wireless communications designs.
Key verified features include integrated VCOs and loop filters, operation at 3.6 V, a maximum operating temperature of +85 °C, and a 24-TSSOP package measuring 0.173 inches, or 4.40 mm, in width. The verified distributor description identifies the part as an RF synthesizer with RF1/RF2 outputs, while another source describes a dual-band architecture and harmonic suppression of -26 dBc. These features suit RF signal-chain designs where local frequency generation, channel selection, and compact implementation are important.
The SI4113-BT is intended for wireless communications equipment using RF1 and RF2 synthesis paths. Its dual-band structure can support systems requiring more than one RF output or related modulation and frequency-generation functions. Because RF synthesizers are sensitive to loop stability, reference noise, supply variation, layout coupling, and unwanted harmonics, the power supply, reference path, decoupling network, and output transmission lines require careful PCB implementation.
A primary design consideration is preserving the specified 2.7 V to 3.6 V supply range and providing clean decoupling close to the power pins. Designers should also verify the selected reference frequency, divider settings, loop-filter configuration, output frequency range, and RF trace impedance against the complete manufacturer datasheet before layout release. Use controlled-impedance routing and a compact RF return path to minimize unintended reflections and coupling.
This page combines verified distributor specifications, sourcing information, available cross-reference results, and practical RF design guidance. It distinguishes confirmed SI4113-BT data from specifications that require datasheet confirmation, helping engineers evaluate the synthesizer before requesting procurement support.
直接替換替代品，適用於 SI4113-BT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： SI4113-BT （相同外形與佔位） — 差異在於 Package, RoHS Status, Product Type, Application Category, Device Type.
SI4136-BT
✅ 直接替換聯絡詢價
查看資料表 →SI4113-D-GT
✅ 直接替換聯絡詢價
查看資料表 →SI4123-D-GT
✅ 直接替換聯絡詢價
查看資料表 →SI4113-D-GTR
✅ 直接替換聯絡詢價
查看資料表 →SI4113-BT 規格
| Product Type | Dual-band RF frequency synthesizer IC |
| Maximum Frequency | 1.8 GHz |
| Supply Voltage Range | 2.7 V to 3.6 V |
| Typical Operating Supply | 3.6 V |
| Typical Supply Current | 18 mA |
| Standby Current | 1 µA |
| Input-to-Output Ratio | 1:1 |
| Integrated Functions | Integrated VCOs and loop filters |
| External Components Required | 2 minimum external components |
| RF Outputs | RF1 and RF2 outputs |
| Harmonic Suppression | -26 dBc |
| Power-Down Modes | Programmable |
| 工作溫度 | Maximum +85 °C |
| 封裝 | 24-pin TSSOP |
| Package Width | 4.40 mm (0.173 in) |
| 安裝類型 | Surface mount |
| RoHS 狀態 | No per Mouser listing |
SI4113-BT 4.40 mm (0.173 in) 腳位配置指南
SI4113-BT（4.40 mm (0.173 in) 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： SI4113-BT.
請參閱 資料表 以查看完整腳位配置。
典型應用
SI4113-BT 適用於 6 應用s: Dual-Band Wireless Transceiver, RF1/RF2 Carrier Generation, Wireless Communication Module, Battery-Powered RF Terminal, RF Test and Measurement Equipment, Industrial Wireless Sensor.
Dual-Band Wireless Transceiver
The SI4113-BT fits a dual-band wireless-transceiver design because it is identified as a dual-band RF synthesizer with RF1 and RF2 outputs and integrated VCOs and loop filters. Placing the synthesizer near the RF signal chain can reduce routing complexity while providing programmable frequency generation for channel selection. Its 1.8 GHz maximum frequency makes it relevant to RF systems operating below that limit, but the actual band plan, divider settings, and output frequency range must be confirmed in the datasheet. Keep the reference path short and use controlled-impedance routing to preserve signal integrity.
推薦
RF1/RF2 Carrier Generation
Use the SI4113-BT when a wireless product needs dedicated RF1 and RF2 synthesis paths rather than a single fixed-frequency clock source. The verified distributor description identifies RF1/RF2 outputs, while the integrated VCO and loop-filter architecture can reduce the number of external RF components. The designer must program the supported channel frequencies, configure dividers and loop settings, and confirm output drive and coupling requirements against the manufacturer documentation. Short, symmetric RF traces and a continuous ground reference help reduce reflections and unintended coupling.
推薦
Wireless Communication Module
The SI4113-BT is suited to wireless communication modules that require local carrier generation close to the transceiver RF section. Its 2.7 V to 3.6 V supply range supports integration with 3.3 V-class RF systems, while 18 mA typical current and 1 µA standby current provide useful power-management checkpoints. The exact standby-state behavior must be checked in the datasheet, especially if the module wakes frequently. Place bypass capacitors close to the supply pins and isolate the synthesizer supply from switching nodes to reduce modulation and phase-noise coupling.
推薦
Battery-Powered RF Terminal
The SI4113-BT can support a battery-powered RF terminal when the system can tolerate the synthesizer’s 18 mA typical operating current and benefits from its 1 µA standby mode. The low-power state is useful during inactive intervals, but total battery life depends on the RF output state, reference clock, regulator efficiency, and transmit duty cycle. Verify wake-up time and whether the synthesizer can remain powered while other system blocks are disabled. Use a low-noise supply path and avoid routing the RF outputs beside high-current switching circuitry.
推薦
RF Test and Measurement Equipment
The SI4113-BT is appropriate for laboratory and production test equipment that requires programmable RF synthesis in a compact 24-TSSOP implementation. The dual-band capability and RF1/RF2 outputs can simplify multi-channel fixture design when the required frequencies are supported. For measurement accuracy, isolate the synthesizer from high-level RF leakage, use controlled-impedance interconnects, and verify output amplitude and harmonic performance. The verified listing reports -26 dBc harmonic suppression, but measurement bandwidth, reference conditions, and output settings must be taken from the complete datasheet.
推薦
Industrial Wireless Sensor
An industrial wireless sensor can use the SI4113-BT when its radio requires stable local RF synthesis and the system operates within the 2.7 V to 3.6 V supply range. Integrated VCOs and loop filters help reduce the external RF-component count in space-constrained sensor assemblies. However, the synthesizer’s 18 mA typical current can dominate a low-duty-cycle sensor power budget, so power-gating and operating-mode strategy should be evaluated carefully. Keep the reference oscillator and supply regulator isolated from sensor ADC and digital timing domains.
推薦
推薦產品摘要
工程參考資料，適用於 SI4113-BT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | SI4136-BT | SI4113-D-GT | SI4123-D-GT |
|---|---|---|---|---|
| Product Type | Dual-band RF frequency synthesizer IC | Frequency synthesizer; related device | Clock generator / RF synthesizer | Clock generator / frequency synthesizer / PLL |
| Package | 24-TSSOP | 24-TSSOP | 24-TSSOP | 24-TSSOP |
| Brand | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
主要差異化特點
- Dual-band RF synthesis with two named RF outputs (對比SI4113-D-GT)
- Higher documented maximum operating frequency (對比SI4136-BT)
- Explicit low-power operating specification (對比SI4123-D-GT)
設計說明
Design the SI4113-BT supply rail for the verified 2.7 V to 3.6 V operating range and the 18 mA typical supply current. Place local bypass capacitors close to the supply and ground pins, and use a low-impedance regulator path to avoid RF phase-noise modulation. Keep switching-regulator outputs and high-current digital nets away from the reference and RF return paths. Because the verified data does not specify maximum transient current or startup sequencing, confirm those limits in the manufacturer datasheet before finalizing power capacity.
Route RF1 and RF2 as controlled-impedance transmission lines with continuous ground references, short connections, and minimal vias. Keep the reference-clock trace away from RF outputs and switching nodes, and place the synthesizer close to the transceiver RF front end when practical. Use a clean ground partition beneath the RF section and verify return-current continuity across layer transitions. The verified data does not specify the complete recommended land pattern or trace geometry, so use the manufacturer package drawing and reference layout as the controlling sources.
Do not treat a shared TSSOP-24 package as proof of drop-in compatibility. Before substituting SI4136-BT, SI4113-D-GT, or SI4123-D-GT, compare the complete pinout, supply limits, reference-input requirements, programming interface, divider arrangement, RF output functions, power-down behavior, and electrical performance. The supplied cross-reference data confirms related package records but does not quantify all pin-level differences. Validate the replacement on a hardware sample or against manufacturer cross-reference documentation before production release.
合規資訊
The verified Mouser listing reports RoHS status as No. REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals declarations were not provided and remain unknown. Confirm current compliance documents with the manufacturer or authorized distributor.
