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Skyworks Solutions Inc. SKY85803-11
- Part No.:
- SKY85803-11
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- RF Front End (LNA + PA)
- Package:
- 24-TFLGA Exposed Pad
- Datasheet:
-
SKY85803-11.pdf
- Description:
- 2BAND 802.11AC FEM WITH LNA IN 4
- Quantity:
- Payment:
- Shipping:
Inventory:2,324
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Product details
Overview
SKY85803-11 from Skyworks Solutions is a dual-band 802.11a/b/g/n/ac WLAN front-end module integrating 2.4 GHz and 5 GHz power amplifiers, T/R switches, diplexers, transmit filters, and integrated power detectors. It delivers +21 dBm at 2.4 GHz (802.11b), +16 dBm at 5 GHz (802.11ac, 256 QAM), and operates from a single 3.3 V supply. It is used in access points and compact PC cards requiring high-efficiency, space-constrained RF front-end integration.
For engineers reviewing the SKY85803-11 datasheet, SKY85803-11 pinout, SKY85803-11 application, or SKY85803-11 equivalent, key selection considerations include dual-band EVM compliance (<2% at rated power), 24-pin 4×4 mm LGA package footprint, per-chain digital enable control (ENG/ENA), and integrated 20 dB dynamic range power detection for closed-loop PA control.
Technical Context
The SKY85803-11 implements two independent transmit chains with separate 2.4 GHz and 5 GHz PAs, each with dedicated enable pins (ENG and ENA) and switch control logic (C0/C1). Its internal architecture integrates notch filtering before each PA input (3.26–3.267 GHz and 3.28–3.89 GHz) to suppress VCO leakage and improve spectral purity.
It supports six distinct RF path configurations via C0/C1 logic states-including 2.4 GHz TX/RX, 5 GHz TX/RX, and bypass modes-with loopback isolation >40 dB and <0.4 μs power ramp time. All RF ports are internally matched to 50 Ω, eliminating external matching components for transceiver interface.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency bands | 2.4–2.5 GHz and 4.9–5.9 GHz - covers full IEEE 802.11b/g/n/ac 2.4G & 5G operation including UNII-1/2/3 sub-bands. |
| Output power (2.4G) | +21 dBm @ 802.11b, +18 dBm @ 802.11n (3% EVM), +16 dBm @ 802.11ac (1.8% EVM) - meets linearity requirements for high-MCS Wi-Fi standards. |
| Output power (5G) | +16 dBm @ 802.11n (3% EVM), +13 dBm @ 802.11ac (1.8% EVM) - enables compliant 80 MHz 256-QAM transmission in 5 GHz band. |
| Power detector range | 0 to +22 dBm (2.4G), 0 to +21 dBm (5G), ±1.5 dB accuracy - supports precise closed-loop output power control without external couplers. |
| Supply voltage | 3.3 V ±10% - compatible with standard Wi-Fi SoC I/O rails; total off-state current <200 μA enables low-power sleep modes. |
| Package | 24-pin LGA, 4 × 4 mm, MSL3 - surface-mountable in high-density PCB layouts; JEDEC-compliant reflow profile for lead-free assembly. |
Pinout & Package
SKY85803-11 uses a 24-pin Land Grid Array (LGA) package measuring 4 mm × 4 mm with 0.4 mm pitch. The package is moisture-sensitivity level 3 (MSL3) and qualified for both leaded and lead-free solder reflow per JEDEC J-STD-020 at 250 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ENG | 2.4 GHz PA enable | Digital control input (1.8–3.3 V logic high) to activate 2.4 GHz transmit chain; enables fast on/off switching with <0.4 μs ramp time. |
| ENA | 5 GHz PA enable | Digital control input (1.8–3.3 V logic high) to activate 5 GHz transmit chain; independent of ENG for simultaneous or staggered band operation. |
| C0, C1 | Switch control logic | Two-bit binary input selecting among six RF paths (e.g., 2.4G TX, 2.4G RX, 5G TX, 5G RX, bypass modes); defines T/R state and LNA enable/disable. |
| TG, TA | 2.4/5 GHz RF inputs | Transceiver-side RF inputs - matched to 50 Ω; accept up to +12 dBm input without damage per absolute max ratings. |
| RG, RA | 2.4/5 GHz RF outputs | LNA outputs feeding transceiver receive path - provide 10–14 dB gain with 2.5–3.0 dB noise figure across respective bands. |
| ANT | Antenna port | Single differential antenna interface supporting both bands via internal diplexer; includes integrated power detector feedback (DET pin). |
| VCC1–VCC4 | Supply pins | Four dedicated 3.3 V supply connections - reduce IR drop and improve PSRR; decoupling required per layout guidelines. |
| GND (Pins 2,3,4,5,8,11,12,14,17,23,24) | Ground terminals | 11 ground pins - ensure low-inductance return path for RF and DC currents; critical for EMI suppression and thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-band integrated FEM | Combines 2.4 GHz and 5 GHz PAs, switches, filters, and detectors in one 4×4 mm LGA-reduces BOM count and PCB area vs discrete solutions. |
| Per-chain power detection | Separate 20 dB dynamic range analog power detectors for 2.4G and 5G chains-enables real-time output power monitoring without external couplers or ADCs. |
| On-chip VCO suppression | Integrated notch filters (3.26–3.267 GHz and 3.28–3.89 GHz) before each PA input-prevents VCO leakage from degrading ACPR and EVM performance. |
| 50 Ω RF port matching | All RF ports (TG, TA, RG, RA, ANT) internally matched to 50 Ω-eliminates need for external matching networks and simplifies layout. |
| Fast enable/disable timing | <0.4 μs PA power ramp time and <0.2 μs LNA enable time-supports strict Wi-Fi frame timing requirements and low-latency TDD operation. |
Applications
| Access Point Front-End | PCMCIA/Mini-PCIe WLAN Card |
|---|---|
Use Scenario: Dual-band concurrent AP supporting 802.11ac 2×2 MIMO in enterprise or SOHO environments. IC Role / Device Role / Timing Role: RF front-end module handling final-stage amplification, band selection, and antenna switching for both 2.4 GHz and 5 GHz radios. Use Value: Enables single-module dual-band support with <2% EVM at +13 dBm (5G) and +16 dBm (2G), meeting regulatory spectral mask and ACLR requirements. | Use Scenario: Compact client-side WLAN adapter for laptops or embedded systems with space-constrained PCBs. IC Role / Device Role / Timing Role: Integrated FEM replacing discrete PA + switch + filter + detector combinations to minimize footprint and component count. Use Value: Reduces RF section area by >40% versus discrete implementation while maintaining 802.11ac MCS9 throughput and FCC/ETSI compliance. |
| Wi-Fi Router Mainboard | IoT Gateway with Dual-Band Connectivity |
Use Scenario: High-throughput residential router with simultaneous dual-band operation and beamforming support. IC Role / Device Role / Timing Role: Transmit/receive front-end for main radio chain, providing linear output power and low-noise receive gain under varying load conditions. Use Value: Delivers +18 dBm at 2.4G (802.11n) and +16 dBm at 5G (802.11ac) with <3% EVM-ensuring robust link budget and interference resilience in dense RF environments. | Use Scenario: Smart home gateway aggregating BLE/Zigbee and dual-band Wi-Fi traffic with low standby power. IC Role / Device Role / Timing Role: Low-quiescent-current FEM enabling rapid wake-up from deep sleep (ICC_OFF <200 μA) while maintaining fast RF path activation. Use Value: Supports <0.2 μs LNA enable and <0.4 μs PA ramp-meeting Wi-Fi power-save mode timing constraints without sacrificing throughput. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar WLAN front-end module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Qorvo QPF4519 | 2.4/5 GHz FEM with integrated 5 GHz LNA bypass; slightly higher 5G output (+14 dBm @ 802.11ac) but no integrated 2.4G power detector. | Requires external power detector for closed-loop control in 2.4G chain; better suited for designs prioritizing 5G throughput over 2.4G calibration simplicity. | Select QPF4519 when 5G-only linearity and higher 5G output are critical, and system-level calibration can accommodate missing 2.4G detector. |
| Infineon BGU7005 | Single-band 2.4 GHz FEM only; lacks 5 GHz functionality and integrated diplexer; smaller 3×3 mm package. | Only supports 2.4 GHz operation-requires separate 5 GHz solution for dual-band systems, increasing complexity and board area. | Choose BGU7005 for cost-sensitive 2.4 GHz-only applications where dual-band integration is unnecessary. |
Compared with QPF4519 and BGU7005, the SKY85803-11 uniquely provides fully integrated dual-band power detection, on-chip VCO notch filtering, and unified 4×4 mm LGA packaging-making it optimal for space-constrained, dual-band Wi-Fi designs requiring minimal external calibration and robust spectral compliance.
Availability
SKY85803-11 is available at Aetrix Electronics and suitable for access point design, PC card integration, and IoT gateway development requiring stable component supply, consistent RF performance across production lots, and long-term lifecycle support.
Supply support for SKY85803-11 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Skyworks Solutions is a global leader in high-performance analog semiconductors for wireless infrastructure, mobile devices, and automotive connectivity, with expertise in RF front-end design and GaAs/SiGe process technologies.
The SKY85803-11 belongs to Skyworks' WLAN front-end module product line, engineered specifically for IEEE 802.11a/b/g/n/ac dual-band client and access point applications demanding high linearity, low EVM, and minimal PCB footprint.
FAQ
What is the operating frequency range supported by the SKY85803-11?
The SKY85803-11 supports 2.4–2.5 GHz for 802.11b/g/n/ac 2.4 GHz operation and 4.9–5.9 GHz for full 5 GHz band coverage including UNII-1, UNII-2, and UNII-3 sub-bands. Both bands are simultaneously enabled via internal diplexer architecture, allowing concurrent dual-band transmission and reception as defined in the 802.11ac standard.
Does the SKY85803-11 include integrated power detection for both bands?
Yes, the SKY85803-11 includes two independent analog power detectors-one for the 2.4 GHz chain (0 to +22 dBm range, ±1.5 dB accuracy) and one for the 5 GHz chain (0 to +21 dBm range, ±2 dB accuracy). Each detector outputs a DC voltage proportional to peak RF power at the ANT pin, enabling closed-loop transmit power control without external couplers or sensors.
What are the supply voltage requirements for the SKY85803-11?
The SKY85803-11 requires a single 3.3 V supply with ±10% tolerance (3.0–3.6 V). Four dedicated VCC pins (VCC1–VCC4) distribute current across the die, and total supply current varies by mode: 220 mA typical at +18 dBm (802.11g), 210 mA at +13 dBm (802.11ac 5G), and <200 μA in off-state. Decoupling capacitors must be placed near each VCC pin per Skyworks layout guidelines.
How does the SKY85803-11 handle VCO leakage suppression?
The SKY85803-11 incorporates two integrated notch filters: one between 3.260–3.267 GHz before the 2.4 GHz PA input, and another between 3.28–3.89 GHz before the 5 GHz PA input. These filters attenuate VCO harmonics and fundamental leakage that would otherwise degrade ACPR and EVM-critical for meeting stringent 802.11ac spectral mask requirements without external filtering.
What is the package type and moisture sensitivity level of the SKY85803-11?
The SKY85803-11 uses a 24-pin Land Grid Array (LGA) package measuring 4 mm × 4 mm with 0.4 mm pitch. It is rated Moisture Sensitivity Level 3 (MSL3) per JEDEC J-STD-020 and qualified for both leaded and lead-free reflow up to 250 °C. The device ships vacuum-packed with baking instructions to prevent popcorning during assembly.
SKY85803-11 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- RF Type:
- 802.11a/b/g/n/ac, WLAN
- Frequency:
- 2.4GHz ~ 2.5GHz
- Features:
- 3.3V Supply Voltage
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 24-LGA (4x4)
SKY85803-11 FAQ
1.How can I place an order for SKY85803-11 through Aetrix?
Please submit a Request for Quotation (RFQ) for SKY85803-11 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SKY85803-11 reliable?
The price and inventory of SKY85803-11 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SKY85803-11 is usually 5 days.
3.What payment methods are accepted for SKY85803-11?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SKY85803-11 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SKY85803-11?
SKY85803-11 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SKY85803-11 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SKY85803-11?
For technical support, including SKY85803-11 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SKY85803-11 requirements.
6.How does Aetrix verify that SKY85803-11 is sourced from the original manufacturer or authorized distributors?
All SKY85803-11 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SKY85803-11 meets industry standards.
7.What is the process for return or replacement of SKY85803-11?
All SKY85803-11 units undergo pre-shipment inspection (PSI). If there is an issue with SKY85803-11, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SKY85803-11 part is unused and in its original packaging.
Return procedure for SKY85803-11:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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