Skyworks Solutions

SI4113-D-GT - 1.8 GHz Dual-Band RF Synthesizer | Skyworks

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24-pin TSSOP, 4.40 mm width Package 1.8 GHz Speed
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Precio actualizado: 2026-10-22
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SI4113-D-GT Descripción general

Skyworks Solutions SI4113-D-GT is a dual-band RF frequency synthesizer IC with integrated VCOs, an operating frequency listed as 1.8 GHz, RF1 and RF2 outputs, and a 24-pin TSSOP package measuring 4.40 mm wide. It is a phase-locked-loop timing device intended for dual-band, low-noise wireless frequency synthesis. According to Skyworks product data, the SI4113 family reduces external passive-component count and eliminates external VCOs and varactor diodes.

A frequency synthesizer generates or translates a stable, programmable reference into an RF carrier used by wireless transmitters, receivers, and related communication equipment. The SI4113-D-GT combines a phase-locked loop with integrated voltage-controlled oscillators and RF output circuitry. Its dual-band architecture supports wireless personal-communications designs where compactness, low power, and reduced external component count are important.

The verified distributor information identifies RF1/RF2 outputs, a 1.8 GHz operating frequency, one synthesizer circuit, and a 24-pin TSSOP package. Skyworks states that the device targets price-sensitive, low-power, high-performance personal wireless communications by reducing passive components, eliminating discrete VCOs and varactor diodes, improving power efficiency, and isolating external interference in silicon. These features make it useful in RF modulation and demodulation chains requiring local frequency generation.

The part also appears in distributor listings under both Skyworks Solutions and legacy Silicon Laboratories naming. This distinction matters when searching for documentation or inventory: the manufacturer history is reflected in the search results, while the current distributor records identify Skyworks Solutions. The exact RF output power, tuning range, phase-noise figures, supply voltage, and control-interface details were not included in the supplied records and require confirmation from the manufacturer datasheet.

Typical design uses include dual-band wireless transceivers, RF modulators, RF demodulators, IF-generation stages, compact communications modules, and low-power RF front ends. In a transmitter, the synthesizer can create the carrier or intermediate frequency while the PLL locks its output to a stable reference. Designers should preserve controlled impedance on RF traces, provide suitable grounding and decoupling, and verify loop-filter settings against the intended channel plan.

The main design tradeoff is integration versus specialized flexibility: integrated VCOs simplify the BOM and reduce external interference pickup, but RF performance, output power, and frequency limits must be confirmed against the exact system requirements. The verified source record does not provide a manufacturer datasheet URL, complete electrical limits, or a full pinout, so those details remain explicitly unconfirmed rather than inferred.

This page combines distributor specifications, package information, source links, application guidance, and a strict validation framework so engineers can distinguish verified facts from parameters that must be checked in the manufacturer datasheet.

Alternativas directas para SI4113-D-GT — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.

Variantes de esta serie

Modelos de la misma serie compatibles directamente con SI4113-D-GT (mismo factor de forma y huella) — difiere en Package, Product Type, RF Outputs, RoHS Status.

Silicon Labs
Package: 24-pin TSSOP
Product Type: Dual-band RF frequency synthesizer IC
RF Outputs: RF1 and RF2 outputs
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SI4113-D-GT Especificaciones

Product Type Dual-band RF frequency synthesizer IC with integrated VCOs
Operating Frequency 1.8 GHz
RF Outputs RF1 and RF2
Number of Circuits 1
Encapsulado 24-pin TSSOP, 4.40 mm width
Tipo de montaje Surface Mount
Reference Input Range 2 MHz to 26 MHz
Output Frequency 1720 MHz
VCO Arrangement Integrated VCOs
Architecture Phase-locked loop RF synthesizer
Estado RoHS Compliant
AEC-Q100 Qualification Not applicable; wireless RF synthesizer
External VCO Requirement No integrated VCOs; external VCOs and varactor diodes not required according to Skyworks product data
Power Efficiency Improved according to Skyworks product data
Application Category Wireless personal communications and RF synthesis
Manufacturer Skyworks Solutions Inc.
Manufacturer Former Naming Silicon Laboratories records also appear in search results

Guía de configuración de pines de SI4113-D-GT 24-pin tssop, 4.40 mm width

Configuración de pines para SI4113-D-GT (encapsulado 24-pin tssop, 4.40 mm width). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.

Diagrama de patillaje del encapsulado 24-pin tssop, 4.40 mm width para SI4113-D-GT

No hay datos detallados de patillaje disponibles para SI4113-D-GT.

Consulte la hoja de datos para ver la configuración completa de patillas.

Aplicaciones típicas

SI4113-D-GT es adecuado para 6 aplicacións: Dual-Band Wireless Transceiver, RF Modulator Signal Chain, IF Generation Stage, Low-Power Wireless Module, RF Demodulator Front End, RF Test and Measurement Equipment.

🌐

Dual-Band Wireless Transceiver

The SI4113-D-GT fits a dual-band wireless transmitter or receiver when the system needs programmable RF or IF generation close to the RF front end. Its verified 1.8 GHz operating point and RF1/RF2 outputs provide the basis for local carrier or intermediate-frequency synthesis, while integrated VCOs reduce the external VCO and varactor-diode count described by Skyworks. The design must still verify frequency coverage, output power, phase noise, reference requirements, and channel-plan margins before selecting the device.

📡

RF Modulator Signal Chain

In an RF modulator signal chain, the SI4113-D-GT can generate a stable local carrier or intermediate frequency for mixing, modulation, or frequency conversion. The verified distributor description identifies the part as an RF synthesizer with RF1 and RF2 outputs, which supports routing one synthesis resource according to the modulator architecture. Integrated VCOs simplify the RF chain, but the exact output level, tuning sensitivity, phase-noise contribution, and loop-filter requirements must be confirmed from the manufacturer datasheet.

⚙️

IF Generation Stage

The SI4113-D-GT is suitable for an IF-generation stage in wireless equipment where a local oscillator must be derived from a stable reference rather than a discrete VCO network. The cross-reference records describe a related synthesizer entry with a 2 MHz to 26 MHz reference input and 1720 MHz output, but those values should not be assumed to define every SI4113-D-ZT1 or SI4113-D-GT variant. Confirm the exact frequency plan, reference multiplier, output impedance, and lock behavior in the current datasheet.

🧩

Low-Power Wireless Module

The SI4113-D-GT can support compact wireless modules where reducing external components and isolating external interference are priorities. Skyworks specifically describes the device as addressing price-sensitive, low-power, high-performance personal wireless communications while reducing passive count and eliminating external VCOs and varactor diodes. A compact module still needs careful supply decoupling, reference routing, controlled-impedance RF traces, and thermal validation; the verified records do not state the exact supply voltage or current consumption.

📻

RF Demodulator Front End

For RF demodulator designs, the SI4113-D-GT may provide a local oscillator or IF reference for a receiver signal path. The two-output architecture can simplify channel-specific routing when the receiver requires separate synthesis paths or different conversion relationships. Engineering validation must cover image rejection, LO leakage, phase noise, spur behavior, lock range, and coexistence with sensitive analog stages; only package and headline frequency information are confirmed in the supplied distributor records.

🔧

RF Test and Measurement Equipment

The SI4113-D-GT can be evaluated for RF test equipment that requires a compact programmable source for calibration or IF injection. Its integrated VCO architecture reduces the number of discrete frequency-generation components that must be assembled and maintained. For instrumentation-grade use, verify tuning resolution, frequency accuracy, phase noise, output purity, reference jitter, temperature drift, and calibration requirements. The available search data does not provide those exact numerical limits, so laboratory qualification is required before production use.

What is the Skyworks SI4113-D-GT?
The Skyworks Solutions SI4113-D-GT is a dual-band RF frequency synthesizer IC with integrated VCOs. The verified DigiKey listing identifies a 1.8 GHz device with RF1 and RF2 outputs in a 24-pin TSSOP package, while Skyworks describes the device for dual-band, low-noise wireless personal communications. Its integrated VCOs and reduced external-component requirement make it suitable for compact RF signal-generation stages.
What package does SI4113-D-GT use?
The SI4113-D-GT uses a 24-pin TSSOP package with a listed width of 4.40 mm. The DigiKey result specifically identifies the package as 24-TSSOP, and Skyworks product information confirms the frequency-synthesizer family used for wireless communications. The package drawing, pin names, exposed-pad details, and land pattern should be taken from the exact manufacturer datasheet before PCB release.
Where can I download the SI4113-D-GT datasheet?
The official Skyworks product page is https://www.skyworksinc.com/en/Products/Timing/RF-Synthesizers/Si4113-D-GT, and it is the preferred starting point for the current manufacturer documentation. Octopart also provides a datasheet listing at https://octopart.com/datasheet/silicon-labs/SI4113-D-GT. Search results also show third-party copies under both Skyworks and legacy Silicon Laboratories naming; verify the document revision and package details before design release.
What is the operating frequency of SI4113-D-GT?
The verified distributor listing identifies the SI4113-D-GT as a 1.8 GHz frequency synthesizer IC. It also lists RF1 and RF2 outputs, one circuit, and a 24-TSSOP package. The supplied records do not establish the complete tuning range, channel plan, or modulation bandwidth, so those limits must be confirmed in the manufacturer datasheet for the exact ordering code.
Does SI4113-D-GT need an external VCO?
Skyworks states that the SI4113 family substantially reduces external passive-component count and eliminates external VCOs and varactor diodes. The integrated VCO arrangement therefore simplifies the RF synthesizer implementation and can reduce board area and external interference pickup. It does not remove the need to validate loop-filter components, reference routing, decoupling, and RF output matching against the manufacturer reference design.
What are the RF outputs on SI4113-D-GT?
The verified Mouser and DigiKey records identify the device as an RF synthesizer with RF1 and RF2 outputs. Those outputs are intended for RF signal-generation roles in wireless communication circuits, including carrier, IF, or intermediate-frequency generation where supported by the device configuration. Exact output levels, output impedance, tuning range, and frequency-plan limits require the manufacturer datasheet.
Can SI4113-D-GT be used in a wireless transmitter?
Yes, the SI4113-D-GT is applicable to wireless personal-communications signal chains where a programmable RF or intermediate frequency is required. Its integrated VCOs and RF1/RF2 outputs reduce the number of external RF frequency-generation components. A transmitter design must still verify output power, phase noise, reference frequency, loop bandwidth, and regulatory limits against the exact application.
Can SI4113-D-GT be used in an RF receiver?
Yes, it can be considered for receiver architectures that need local RF or IF synthesis, provided the required frequency and output specifications fall within the device limits. The verified records identify a 1.8 GHz RF synthesizer with RF1 and RF2 outputs, but they do not provide the full sensitivity, noise, tuning, or channel-separation specifications. Confirm those values in the datasheet and validate coexistence with the receiver front end.
What is the lead time for SI4113-D-GT?
The supplied distributor snippets say that SI4113-D-GT can be bought and shipped today, but the records do not provide a quantified manufacturer lead time or a guaranteed XAIPART stocking commitment. Treat availability as subject to confirmation at order time. The LCSC result reports a price beginning at $6.2983, while DigiKey and Mouser results indicate product availability but do not expose a fixed lead-time figure in the supplied snippets.
Where can I buy SI4113-D-GT online?
SI4113-D-GT is listed by DigiKey, Mouser, LCSC, and Octopart-linked distributors. DigiKey identifies the part as a 1.8 GHz frequency synthesizer in 24-TSSOP, Mouser lists it with RF1/RF2 outputs, and LCSC reports an in-stock listing beginning at $6.2983. Inventory and pricing can change, so request a current quotation and verify the manufacturer, package, and date code before purchase.
What is the price of SI4113-D-GT?
The only explicit price in the supplied records is LCSC's reported starting price of $6.2983. DigiKey and Mouser provide product, datasheet, inventory, and pricing links but their snippets do not show numeric tiers. Treat $6.2983 as distributor-listed information as of 2026-10-22, not a guaranteed quote. Higher-volume prices and XAIPART commercial pricing require confirmation.
What can replace SI4113-D-GT?
SI4113-BT, SI4113-D-ZT1, SI4123-D-GTR, and SI4113-D-GTR appear in cross-reference results as related or comparison parts, but the supplied records do not establish five or more verified pin-to-pin drop-in replacements. Several use the same TSSOP-24 family while differing in frequency, VCO, tuning, or ordering options. Do not substitute them without checking the exact pinout, frequency plan, supply voltage, and RF specifications.
Is SI4113-D-GT compatible with SI4113-BT?
The cross-reference data lists SI4113-D-GT and SI4113-BT together as a comparison and reports a TSSOP-24 package for the pair, but it does not prove complete pin-to-pin compatibility. The comparison describes a 2 MHz to 26 MHz input and 1720 MHz output for the related entry, while the target is identified as a 1.8 GHz RF synthesizer. Treat SI4113-BT as a candidate requiring datasheet-level verification, not an automatic drop-in replacement.
When should I choose SI4113-D-GT over a discrete VCO?
Choose SI4113-D-GT when the design benefits from integrated VCOs, fewer external passives, lower board area, and reduced exposure to externally coupled interference. A discrete VCO may offer more flexibility when the required frequency, tuning range, output level, noise, or control topology falls outside the synthesizer's verified limits. The decision should be based on frequency plan, phase-noise requirements, layout constraints, and qualification conditions.
What design considerations apply to SI4113-D-GT layouts?
Use controlled-impedance RF routing for RF1 and RF2, keep the reference and feedback paths short, and place decoupling and loop-filter components according to the manufacturer reference design. RF synthesizers can be sensitive to ground return paths, supply noise, unintended coupling, and poor impedance discontinuities. Because the supplied records do not include a complete pinout or layout drawing, use the official datasheet and reference circuit as the release authority.
What key specifications should engineers verify for SI4113-D-GT?
Engineers should verify the complete frequency range, reference input requirement, supply voltage, RF1/RF2 output level, phase noise, tuning sensitivity, loop bandwidth, operating temperature, and package pinout. The verified distributor data specifically confirms 1.8 GHz operation, RF1/RF2 outputs, one circuit, and 24-pin TSSOP packaging. Other electrical limits are not supplied here and must be read from the current Skyworks datasheet.

Datos de referencia de ingeniería para SI4113-D-GT — comparación, orientación de diseño e información de cumplimiento.

Guía de selección

Choose SI4113-D-GT for a compact wireless RF or IF synthesis design that needs integrated VCOs and documented RF1/RF2 outputs around the verified 1.8 GHz device position. It is attractive when reducing external VCO, varactor-diode, and passive-component count is important. Consider SI4113-D-ZT1 or SI4113-BT only after comparing the exact frequency plan, reference input, pinout, control interface, output level, and phase-noise requirements. Consider SI4123-D-GTR when the design specifically needs the related triple-PLL architecture, but do not assume compatibility from the shared TSSOP-24 package. A discrete VCO or another synthesizer family may be preferable when the system requires frequency ranges, tuning resolution, output power, or noise performance outside the target's verified operating limits.

Comparación con alternativas

Parámetro Este producto SI4113-D-ZT1 SI4113-D-GTR SI4113-BT SI4123-D-GTR
Package 24-pin TSSOP, 4.40 mm width 24-pin TSSOP 24-pin TSSOP 24-pin TSSOP 24-pin TSSOP
Brand Skyworks Solutions Skyworks Solutions Skyworks Solutions Silicon Laboratories Skyworks Solutions
Product Type Dual-band RF frequency synthesizer IC with integrated VCOs RF synthesizer RF synthesizer RF synthesizer PLL frequency synthesizer

Diferenciadores clave

  • Integrated RF frequency synthesis in a single IC (frente a Discrete VCO implementation)
  • RF1 and RF2 output architecture (frente a SI4113-D-GTR)
  • 1.8 GHz device positioning (frente a SI4113-BT)
  • Compact 24-pin TSSOP implementation (frente a Discrete VCO plus external synthesizer components)

Notas de diseño

Route RF1 and RF2 as controlled-impedance RF traces, using the shortest practical connection from the device to the matching network and keeping return-current paths continuous over a solid ground plane. Keep the reference input and feedback routing compact and isolated from RF outputs where practical. Use the manufacturer reference layout and land pattern for the exact 24-pin TSSOP ordering code before fabrication.

Place supply decoupling capacitors at the power pins and preserve a low-impedance ground return for the synthesizer. Because the supplied records do not state the recommended supply voltage, capacitor values, or current consumption, do not infer those values from generic RF designs. Select components only after reviewing the Skyworks datasheet and its recommended application circuit; validate supply ripple during PLL lock and RF output activity.

Evaluate the reference clock, loop-filter implementation, and RF output matching as a single signal-chain design. Harmonic spurs and phase noise are influenced by supply noise, reference jitter, layout coupling, and the selected loop bandwidth. Use shielded or separated reference routing where needed, and measure both locked and unlocked behavior across the intended frequency range rather than relying only on nominal synthesizer frequency.

Do not treat a same-package comparison listing as proof of drop-in compatibility. Verify pin names, power sequencing, reference input range, RF output assignment, control registers, frequency limits, and package drawing before replacing SI4113-D-GT with any related part. Also confirm whether the records are current Skyworks documentation or legacy Silicon Laboratories documentation, because manufacturer history can otherwise cause mismatched datasheets.

Información de cumplimiento

RoHS
Compliant
REACH
Unknown
AEC-Q100
Not Applicable
Libre de plomo
Unknown
Libre de halógenos
Unknown
Minerales en conflicto
Unknown

RoHS compliance is explicitly reported in the supplied comparison results for SI4123-D-GTR, while the target's detailed environmental declarations are not included in the supplied records. Other compliance fields remain unknown.

Datos verificados el: 2026-10-22 — datos verificados y seleccionados por el equipo de ingeniería de componentes de XAIPART

Búsquedas relacionadas

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Componentes & términos relacionados

Skyworks Solutions Silicon Laboratories SI4113-D-GT SI4113-D-ZT1 SI4113-D-GTR SI4113-BT SI4123-D-GTR RF synthesizer frequency synthesizer phase-locked loop PLL integrated VCO voltage-controlled oscillator RF1 RF2 wireless personal communications dual-band wireless IF generation RF modulator RF demodulator TSSOP-24 surface-mount package frequency synthesis RoHS controlled-impedance RF routing
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