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Microchip Technology SST12LF02-QXCE
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- Part No.:
- SST12LF02-QXCE
- Manufacturer:
- Microchip Technology
- Category:
- RF Front End (LNA + PA)
- Package:
- 16-XFQFN Exposed Pad
- Datasheet:
-
SST12LF02-QXCE.pdf
- Description:
- IC AFE WLAN 11B/G/N 16XQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,906
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Product details
Overview
SST12LF02-QXCE from Microchip Technology is a 2.4 GHz front-end module (FEM) integrating a GaAs PHEMT/HBT power amplifier and SP3T switch in a single die. It delivers 29 dB typical gain, 21 dBm linear output power at 3.3 V, and <3% added EVM at 18 dBm for 54 Mbps 802.11g OFDM-enabling compact WLAN/Bluetooth coexistence designs in consumer wireless access points and IoT endpoints.
For engineers reviewing the SST12LF02-QXCE datasheet, SST12LF02-QXCE pinout, SST12LF02-QXCE application, or SST12LF02-QXCE equivalent, key selection criteria include its integrated PA+SP3T architecture, 50 Ω input/output matching, on-chip power detector with 20 dB dynamic range, and RoHS-compliant 3 mm × 3 mm XQFN-16 package.
Technical Context
The SST12LF02-QXCE implements a monolithic GaAs PHEMT/HBT process to achieve high gain and linearity across 2.4–2.5 GHz while maintaining low DC current draw. Its integrated SP3T switch enables simultaneous WLAN Rx and Bluetooth Rx paths with insertion losses of 0.5 dB (WLAN Rx), 4.5 dB (simultaneous WLAN Rx), and 3.8 dB (simultaneous Bluetooth Rx).
On-chip bias circuitry provides temperature-stable operation: output power varies only ~1 dB and gain varies ~3 dB over –20°C to +85°C. The internal power detector is load- and temperature-insensitive, supporting closed-loop power control without external calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 2.4–2.5 GHz - fully specified for IEEE 802.11b/g/n and Bluetooth 2.4 GHz ISM band operation. |
| Gain | 29 dB typical - enables single-stage amplification in TX chain without external driver stages. |
| Output Power | 21 dBm - meets 802.11b/g ACPR mask and supports 54 Mbps OFDM with <3% added EVM at 18 dBm. |
| Power Added Efficiency | High - enables low DC current consumption in battery-powered and thermally constrained 2.4 GHz devices. |
| Insertion Loss (WLAN Rx) | 0.5 dB - minimizes receiver sensitivity degradation in shared antenna architectures. |
| Package | XQFN-16, 3 mm × 3 mm × 0.45 mm - surface-mount, lead-free, RoHS-compliant with exposed thermal pad. |
| Power Detector Range | 20 dB dynamic range - supports accurate RF power monitoring across full output range without external couplers. |
Pinout & Package
Package: 16-contact XQFN, 3 mm × 3 mm × 0.45 mm, RoHS-compliant, with exposed thermal pad (Pin 16).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Ground | Multiple GND connections ensure low-impedance RF return path and thermal dissipation via exposed pad. |
| 9 | Vcc | Main supply for PA core - requires local 3.3 V decoupling per datasheet layout guidelines. |
| 10 | Vccb | Bias supply for switch - independent control enables optimized RX/TX path isolation. |
| 11 | Vref | Reference voltage input for internal detector - sets detection slope and offset calibration point. |
| 12 | Vdet | Detector output - analog voltage proportional to RF output power, used for closed-loop control. |
| 13 | Antenna | Common antenna port - connects to shared antenna system for WLAN/Bluetooth coexistence. |
| 14 | Bluetooth Rx_out | Bluetooth receive output - routed directly to BT transceiver LNA input with 3.8 dB loss in dual-RX mode. |
| 15 | TX_in | Transmit input - accepts 50 Ω-matched RF signal from baseband/RFIC; internally matched, no external matching required. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PA + SP3T Switch | Reduces BOM count and PCB area by consolidating two critical RF functions into one monolithic GaAs die. |
| On-chip 20 dB Dynamic Power Detector | Eliminates need for external directional coupler and ADC interface, simplifying power control loop design. |
| 50 Ω Input/Output Matching | Removes requirement for external matching networks, accelerating RF layout and reducing tuning iterations. |
| Temperature-Stable Gain & Power | ±1.5 dB gain and ±0.5 dB power variation over –20°C to +85°C enables stable link budget without compensation firmware. |
| Low Insertion Loss Dual-RX Paths | Enables concurrent WLAN and Bluetooth reception with minimal SNR penalty (<0.5 dB degradation vs. dedicated paths). |
Applications
| Wi-Fi Access Point Front-End | Bluetooth/Wi-Fi Coexistence Module |
|---|---|
Use Scenario: Dual-band 2.4 GHz Wi-Fi AP with integrated Bluetooth for voice assistant and peripheral connectivity. IC Role / Device Role / Timing Role: Front-end module handling TX amplification, antenna switching, and simultaneous RX path routing for WLAN and Bluetooth radios. Use Value: Enables single-antenna implementation with <0.5 dB SNR loss in dual-RX mode and meets FCC spectral mask at 21 dBm output. | Use Scenario: Compact IoT gateway supporting concurrent BLE sensor data collection and Wi-Fi uplink. IC Role / Device Role / Timing Role: Integrated PA+switch FEM providing shared antenna interface, power detection, and low-loss RX path separation. Use Value: Reduces RF section component count by 7+ parts versus discrete PA+switch solution while maintaining 802.11g 54 Mbps throughput. |
| Wireless Router RF Subsystem | Smart Home Hub Transceiver Interface |
Use Scenario: Residential dual-stream 802.11n router requiring high-efficiency 2.4 GHz transmit chain and robust coexistence. IC Role / Device Role / Timing Role: Primary TX power amplifier and antenna switch controller, with on-chip detector enabling real-time TX power regulation. Use Value: Achieves >29 dB gain and <3% added EVM at 18 dBm, meeting 802.11n OFDM requirements without external linearization. | Use Scenario: Voice-controlled smart speaker with integrated Wi-Fi and Bluetooth LE for multi-protocol device pairing. IC Role / Device Role / Timing Role: Shared-antenna front-end managing TX amplification, RX path selection, and closed-loop power control via Vdet feedback. Use Value: Supports simultaneous 2.4 GHz RX operations with 4.5 dB (WLAN) and 3.8 dB (BLE) insertion loss, preserving link margin in dense RF environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2.4 GHz front-end module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Skyworks SKY85303-31 | Higher 22 dBm POUT, 30 dB gain, but requires external power detector and separate switch control logic. | Designed for higher-performance 802.11ac systems; lacks integrated detector and dual-RX optimization. | Choose when higher output power and gain are prioritized over integration and coexistence simplicity. |
| Qorvo QPF4206 | Includes integrated T/R switch and detector, but optimized for 802.11ax with different bias sequencing and 2.4/5 GHz dual-band support. | Targets next-gen Wi-Fi 6 routers; not qualified for legacy 802.11b/g/n-only designs. | Prefer for new 802.11ax platforms where dual-band capability and advanced envelope tracking are required. |
Compared with SKY85303-31 and QPF4206, the SST12LF02-QXCE offers tighter integration for cost-sensitive 802.11b/g/n applications, with built-in detector, dual-RX path optimization, and proven thermal stability across industrial temperature ranges-reducing validation effort and layout complexity.
Availability
SST12LF02-QXCE is available at Aetrix Electronics and suitable for Wi-Fi access points, Bluetooth/Wi-Fi coexistence modules, and wireless router RF subsystems requiring stable component supply, consistent performance across temperature, and long-term production continuity.
Supply support for SST12LF02-QXCE 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
Microchip Technology is a global provider of microcontroller, mixed-signal, analog, and Flash-IP solutions, acquired Silicon Storage Technology (SST) in 2016 to expand its RF and memory portfolio.
The SST12LF02 product line targets cost-optimized, highly integrated 2.4 GHz front-end solutions for legacy and mainstream Wi-Fi/Bluetooth consumer and industrial equipment-emphasizing ease of integration, thermal robustness, and qualification for mass-market production.
FAQ
What is the operating frequency range of the SST12LF02-QXCE?
The SST12LF02-QXCE operates across 2.4–2.5 GHz, fully covering the IEEE 802.11b/g/n and Bluetooth 2.4 GHz ISM bands. All gain, output power, and linearity specifications-including 29 dB typical gain and 21 dBm ACPR-compliant output-are validated within this band and over the full industrial temperature range of –20°C to +85°C.
Does the SST12LF02-QXCE require external matching components?
No, the SST12LF02-QXCE features fully internal 50 Ω input and output matching. Its TX_in, Antenna, and Rx ports are DC-decoupled and impedance-matched at the package level, eliminating the need for external baluns, capacitors, or inductors in standard 2.4 GHz reference layouts. This reduces design risk and accelerates time-to-test for the SST12LF02-QXCE.
How does the on-chip power detector in the SST12LF02-QXCE function?
The SST12LF02-QXCE integrates a temperature- and load-insensitive power detector with 20 dB dynamic range, outputting an analog voltage (Vdet pin) proportional to RF output power. It enables closed-loop TX power control without external couplers or calibration tables, and is validated to maintain accuracy across –20°C to +85°C-critical for reliable operation of the SST12LF02-QXCE in uncontrolled thermal environments.
Can the SST12LF02-QXCE support simultaneous WLAN and Bluetooth reception?
Yes, the SST12LF02-QXCE supports concurrent WLAN and Bluetooth reception through its SP3T switch architecture. In dual-RX mode, it delivers 4.5 dB insertion loss to the WLAN receiver and 3.8 dB to the Bluetooth receiver-both referenced to 50 Ω-enabling coexistence with minimal SNR degradation. This capability is explicitly verified in the SST12LF02-QXCE datasheet and application notes.
What package type and footprint does the SST12LF02-QXCE use?
The SST12LF02-QXCE uses a 16-contact XQFN package measuring 3 mm × 3 mm × 0.45 mm, with an exposed thermal pad (Pin 16) for enhanced heat dissipation. It is lead-free and RoHS-compliant, and its pinout-including dedicated Vcc, Vccb, Vref, and Vdet terminals-is defined in the DS75006B Product Brief for the SST12LF02-QXCE.
SST12LF02-QXCE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- RF Type:
- 802.11b/g/n
- Frequency:
- 2.4GHz
- Features:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-XQFN (3x3)
SST12LF02-QXCE FAQ
1.How can I place an order for SST12LF02-QXCE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST12LF02-QXCE 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 SST12LF02-QXCE reliable?
The price and inventory of SST12LF02-QXCE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST12LF02-QXCE is usually 5 days.
3.What payment methods are accepted for SST12LF02-QXCE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST12LF02-QXCE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST12LF02-QXCE?
SST12LF02-QXCE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST12LF02-QXCE 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 SST12LF02-QXCE?
For technical support, including SST12LF02-QXCE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST12LF02-QXCE requirements.
6.How does Aetrix verify that SST12LF02-QXCE is sourced from the original manufacturer or authorized distributors?
All SST12LF02-QXCE 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 SST12LF02-QXCE meets industry standards.
7.What is the process for return or replacement of SST12LF02-QXCE?
All SST12LF02-QXCE units undergo pre-shipment inspection (PSI). If there is an issue with SST12LF02-QXCE, 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 SST12LF02-QXCE part is unused and in its original packaging.
Return procedure for SST12LF02-QXCE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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