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Skyworks Solutions Inc. SKY85711-11
- Part No.:
- SKY85711-11
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- RF Front End (LNA + PA)
- Package:
- -
- Datasheet:
-
SKY85711-11.pdf
- Description:
- 802.11AC 5GHZ FEM IN 2.5 X 2.5MM
- Quantity:
- Payment:
- Shipping:
Inventory:62,083
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Product details
Overview
SKY85711-11 from Skyworks Solutions is a highly integrated 5 GHz WLAN front-end module (FEM) combining a power amplifier (PA), low-noise amplifier (LNA) with bypass, and SPDT T/R switch in a single QFN package. It delivers +17 dBm output at 1.8% EVM (HT80, MCS9), 27 dB TX gain, and 12 dB RX gain for 802.11ac systems in mini-cards and wireless video devices.
For engineers reviewing the SKY85711-11 datasheet, SKY85711-11 pinout, SKY85711-11 application, or SKY85711-11 equivalent, key selection considerations include 5 GHz band support, integrated directional coupler and power detector for closed-loop control, QFN-16 (2.5 × 2.5 mm) footprint, and compliance with HT40/HT80 modulation requirements.
Technical Context
The SKY85711-11 integrates a 5 GHz SPDT T/R switch, PA, and LNA with independent enable controls (PA_EN, LNA_EN) to minimize off-state leakage current. Its fully-matched 50 Ω input/output interfaces simplify RF layout and eliminate external matching components.
An on-die directional coupler and integrated power detector provide real-time transmit power monitoring for precise closed-loop power control in 802.11ac baseband systems. The module operates across the full 5.15–5.85 GHz UNII band without external tuning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 5.15–5.85 GHz - Covers all UNII bands for 802.11ac operation without reconfiguration. |
| TX Output Power | +17 dBm @ 1.8% EVM, HT80, MCS9 - Meets high-throughput 5 GHz Wi-Fi performance requirements. |
| TX Gain | 27 dB - Enables direct drive from typical WLAN baseband ICs without intermediate gain stages. |
| RX Gain | 12 dB - Improves system noise figure while supporting LNA bypass mode for diversity switching. |
| Package | 16-pin QFN, 2.5 × 2.5 mm - MSL1 rated; compatible with standard SMT reflow and automated optical inspection. |
| Integrated Detector | On-chip directional coupler + VDET pin - Provides analog voltage proportional to forward RF power for closed-loop calibration. |
Pinout & Package
SKY85711-11 is housed in a 16-pin, 2.5 × 2.5 mm Quad Flat No-Lead (QFN) package with exposed thermal pad (MSL1, JEDEC J-STD-020 compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_PA | PA supply input | 3.3 V DC input for power amplifier stage; requires local 100 nF decoupling. |
| VDD_LNA | LNA supply input | 1.8–3.3 V DC input for low-noise amplifier; supports independent bias control. |
| PA_EN | PA enable control | Active-high digital input; disables PA and reduces quiescent current to <1 µA in standby. |
| LNA_EN | LNA enable control | Active-high digital input; enables LNA path or selects bypass mode for diversity switching. |
| VDET | Power detector output | Analog voltage output proportional to forward RF power; used for closed-loop TX power calibration. |
| ANT | Antenna interface | Single-port 50 Ω RF interface shared between TX and RX paths via internal SPDT switch. |
| TX | Transmit input | 50 Ω RF input from WLAN baseband transceiver; internally matched to PA input. |
| RX | Receive output | 50 Ω RF output to WLAN baseband receiver; includes LNA gain and bypass path selection. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated SPDT T/R switch | Enables single-antenna 5 GHz TX/RX duplexing without external switch or duplexer. |
| On-die directional coupler | Eliminates need for external coupler; provides accurate forward power sampling for regulatory compliance. |
| LNA with bypass mode | Supports antenna diversity architectures by allowing direct RX path routing around LNA when SNR is sufficient. |
| Full 5 GHz band coverage | Operates across UNII-1/2A/2C/3 sub-bands (5.15–5.85 GHz) without external tuning or band switching. |
| Low off-state leakage | PA_EN/LNA_EN disable logic ensures <1 µA total shutdown current, critical for battery-powered clients. |
Applications
| PCMCIA / Mini-Card WLAN Adapters | 5 GHz Wireless Video Transmitters |
|---|---|
Use Scenario: Compact 802.11ac client adapters for laptops and embedded hosts using mini-PCIe or half-mini-card form factors. IC Role / Device Role / Timing Role: Front-end RF signal conditioning and amplification for 5 GHz transmit/receive paths. Use Value: Single-chip integration reduces BOM count and PCB area versus discrete PA + LNA + switch solutions. | Use Scenario: Low-latency HD video streaming over 5 GHz ISM band in drones, security cameras, and portable monitors. IC Role / Device Role / Timing Role: High-linearity 5 GHz FEM enabling robust HT80 transmission under dynamic RF conditions. Use Value: +17 dBm output at 1.8% EVM ensures stable MCS9 link budget even with marginal antenna efficiency. |
| 802.11ac Access Point Clients | Mobile/Tablet WLAN Modules |
Use Scenario: Client-side 5 GHz radio in dual-band APs supporting MU-MIMO and beamforming. IC Role / Device Role / Timing Role: Transmit power amplification and receive sensitivity enhancement with fast T/R switching. Use Value: 27 dB TX gain and 12 dB RX gain improve uplink/downlink balance and reduce baseband DAC/ADC dynamic range requirements. | Use Scenario: Integrated WLAN subsystem in space-constrained tablets and ultrabooks requiring low-power operation. IC Role / Device Role / Timing Role: Power-efficient 5 GHz FEM with independent PA/LNA enable controls for adaptive power management. Use Value: Sub-µA shutdown current extends battery life during idle periods without sacrificing wake-up latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 5 GHz WLAN front-end applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Qorvo QPF4526 | Higher POUT (+19 dBm @ 3% EVM), wider 5.15–5.925 GHz range, same 2.5 × 2.5 mm QFN-16 package. | Optimized for higher-power AP client use cases; slightly higher current draw in TX mode. | Preferred when >+17 dBm output or extended upper-band coverage is required. |
| Avago/Broadcom AFEM-8050 | Lower TX gain (24 dB), no integrated power detector; requires external coupler for closed-loop control. | Targeted at cost-sensitive client designs where system-level calibration is handled externally. | Select when detector integration is not needed and BOM cost reduction outweighs layout simplification. |
Compared with QPF4526 and AFEM-8050, the SKY85711-11 uniquely balances mid-power output (+17 dBm), integrated VDET-based power control, and compact footprint-making it optimal for mini-card and mobile client platforms where calibration simplicity and board space are critical.
Availability
SKY85711-11 is available at Aetrix Electronics and suitable for 802.11ac client adapters, wireless video transmitters, and mobile WLAN modules requiring stable component supply and consistent RF performance across production batches.
Supply support for SKY85711-11 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 communications, infrastructure, and automotive markets, headquartered in Woburn, MA.
The SKY85711-11 belongs to Skyworks' WLAN front-end module product line, engineered specifically for space-constrained, battery-aware 5 GHz 802.11ac client devices requiring integrated RF functionality and simplified system calibration.
FAQ
What is the operating frequency range supported by the SKY85711-11?
The SKY85711-11 operates across the full 5.15–5.85 GHz UNII band, covering all 802.11ac channels including UNII-1, UNII-2A, UNII-2C, and UNII-3. This range supports HT40 and HT80 channel bandwidths without external tuning or band-switching circuitry, making the SKY85711-11 suitable for global 5 GHz WLAN deployments.
Does the SKY85711-11 include an integrated power detector?
Yes, the SKY85711-11 includes an on-die directional coupler and analog power detector output (VDET pin). This provides a voltage proportional to forward RF power, enabling closed-loop TX power calibration in 802.11ac baseband systems without external couplers or detectors-reducing bill-of-materials and layout complexity for the SKY85711-11.
What is the package type and thermal rating of the SKY85711-11?
The SKY85711-11 uses a 16-pin, 2.5 × 2.5 mm Quad Flat No-Lead (QFN) package with an exposed thermal pad. It is rated MSL1 per JEDEC J-STD-020, supporting peak reflow temperatures up to 260 °C. The package design facilitates efficient heat dissipation and compatibility with standard SMT assembly processes for the SKY85711-11.
How does the LNA bypass function work in the SKY85711-11?
The SKY85711-11 supports LNA bypass via the LNA_EN control pin: when deasserted, the RX path routes directly from ANT to RX, skipping the LNA stage. This enables antenna diversity schemes where high-SNR signals can bypass amplification to avoid compression, improving dynamic range and reducing current consumption-key for adaptive receiver operation in the SKY85711-11.
What are the key enable control signals for the SKY85711-11?
The SKY85711-11 features two independent digital enable inputs: PA_EN (active-high) controls the power amplifier, and LNA_EN (active-high) controls the low-noise amplifier and bypass path. Both signals support deep-sleep modes, reducing total off-state current to less than 1 µA-critical for battery-powered applications using the SKY85711-11.
SKY85711-11 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- *
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- RF Type:
- -
- Frequency:
- -
- Features:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- -
SKY85711-11 FAQ
1.How can I place an order for SKY85711-11 through Aetrix?
Please submit a Request for Quotation (RFQ) for SKY85711-11 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 SKY85711-11 reliable?
The price and inventory of SKY85711-11 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SKY85711-11 is usually 5 days.
3.What payment methods are accepted for SKY85711-11?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SKY85711-11 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SKY85711-11?
SKY85711-11 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SKY85711-11 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 SKY85711-11?
For technical support, including SKY85711-11 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SKY85711-11 requirements.
6.How does Aetrix verify that SKY85711-11 is sourced from the original manufacturer or authorized distributors?
All SKY85711-11 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 SKY85711-11 meets industry standards.
7.What is the process for return or replacement of SKY85711-11?
All SKY85711-11 units undergo pre-shipment inspection (PSI). If there is an issue with SKY85711-11, 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 SKY85711-11 part is unused and in its original packaging.
Return procedure for SKY85711-11:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SKY85711-11 Tags
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