# RFAmp ## Description SKY66112 2.4GHz FEM Module PCB – Manufacturability & Functional Review Update ## Project Details - **Owner:** aircable - **Created:** 10/8/2025 - **Last Updated:** 10/8/2025 - **Visibility:** Public - **System Architecture:** ```mermaid graph LR Host[Host Radio RF Port] FEM[Integrated FEM\n(PA + LNA + TR Switch)] Ant[Antenna (RP-SMA)] %% Primary Integrated Path Host --> FEM --> Ant %% Alternative Discrete Splitter/Combiner Path Host --> Splitter[RF Splitter] Splitter --> PA[Discrete PA] Splitter --> LNA[Discrete LNA] PA --> Combiner[RF Combiner] LNA --> Combiner Combiner --> Ant ``` ## Key Components ### J1 — [BWSMA-KE-P001](https://www.flux.ai/lcsc/bwsma-ke-p001~l0wg.md) - Connector Type: Board-End - Interface Diameter: 5.2mm - Impedance: 50Ω - LCSC Part Number: C496550 - Part Type: RF Connectors / Coaxial Connectors - Role Details: Antenna RP-SMA female board mount - Manufacturer Part Number: BWSMA-KE-P001 - Manufacturer Name: BAT WIRELESS(蝙蝠无线) - Role: Connector - Product Info Url: https://lcsc.com/product-detail/New-Arrivals_BAT-WIRELESS-BWSMA-KE-P001_C496550.html - JLCPCB Part Class: Extended Part - Package or Case Code: SMA-SMD_BWSMA-KE-P001 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2403201208_BAT-WIRELESS-BWSMA-KE-P001_C496550.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] ### J2 — [U.FL-R-SMT-1(10)](https://www.flux.ai/jecstronic/upfl-r-smt-110~du.md) - Role Details: Host RF I/O header - Role: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Hirose%20PDFs/EDC3-302540-10.tif.pdf - Manufacturer Name: Hirose Electric Co Ltd - Manufacturer Part Number: U.FL-R-SMT-1(10) **Pins:** - Center_Contact [pin 2] - Outer_Contact [pin 1] - Outer_Contact [pin 3] ### U1 — [SKY66112-11](https://www.flux.ai/lcsc/sky66112-11~d3m1.md) - LCSC Part Number: C2654460 - Role Details: Primary integrated FEM (PA/LNA/TR switch) - Manufacturer Part Number: SKY66112-11 - Part Type: RF Amplifiers - JLCPCB Part Class: Extended Part - Package or Case Code: MCM-22_L3.5-W3.0-P0.50-BL-EP - Role: Amplification - Manufacturer Name: SKYWORKS **Pins:** - ANT_SEL [pin 4] - ANT1 [pin 8] - ANT2 [pin 6] - CHL [pin 19] - CPS [pin 15] - CRX [pin 2] - CSD [pin 3] - CTX [pin 17] - EP [pin 23] - EP [pin 24] - GND [pin 1] - GND [pin 5] - GND [pin 7] - GND [pin 9] - GND [pin 10] - GND [pin 12] - GND [pin 13] - GND [pin 18] - GND [pin 20] - GND [pin 22] - RFIN [pin 21] - VCC1 [pin 16] - VCC2 [pin 14] - VDD [pin 11] ### U2 — [MAX2644EXT](https://www.flux.ai/jecstronic/max2644ext~whe.md) - Role Details: Discrete PA for alternative splitter/combiner path - Part Type: Integrated Circuit - Manufacturer Part Number: MAX2644EXT - Role: Amplification - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Analog Devices Inc./Maxim Integrated - Datasheet URL: https://rocelec.widen.net/view/pdf/5s5up4tl0m/MAXMS03615-1.pdf **Pins:** - BIAS [pin 1] - GND [pin 2] - GND [pin 5] - RFIN [pin 3] - RFOUT [pin 6] - VCC [pin 4] ### U4 — [BGS12WN6E6327XTSA1](https://www.flux.ai/adrian95/bgs12wn6e6327xtsa1~oqw.md) - Manufacturer Name: Infineon Technologies - Role Details: RF SPDT switch for alternative splitter/combiner path - Datasheet URL: https://www.infineon.com/dgdl/Infineon-BGS12WN6-DataSheet-v01_00-EN.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: BGS12WN6E6327XTSA1 - Role: Switching - Part Type: RF Switch **Pins:** - CTRL [pin 6] - GND [pin 2] - RF1 [pin 3] - RF2 [pin 1] - RFIN [pin 5] - VDD [pin 4] ### U5 — [DC1722J5020AHF](https://www.flux.ai/lcsc/dc1722j5020ahf~akr.md) - Product Info Url: https://lcsc.com/product-detail/RF-Coupler_Anaren-DC1722J5020AHF_C509395.html - Role Details: Directional RF coupler for discrete TX/RX combiner path - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2005092039_Anaren-DC1722J5020AHF_C509395.pdf - Part Type: RF Coupler - JLCPCB Part Class: Extended Part - Manufacturer Name: Anaren(安伦) - Role: Coupling - Manufacturer Part Number: DC1722J5020AHF - Package or Case Code: DC3338J5005AHF - LCSC Part Number: C509395 **Pins:** - Coupled/Isolated [pin 5] - Direct/Input [pin 1] - GND [pin 4] - GND [pin 3] - Input/Direct [pin 6] - Isolated/Coupled [pin 2] ### U6 — [AMS1117-5.0](https://www.flux.ai/adrian95/ams1117-50~r3b.md) - Datasheet URL: https://www.snapeda.com/parts/AMS1117-5.0/Advanced%20Monolithic%20Systems/datasheet/ - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: ams - Manufacturer Part Number: AMS1117-5.0 - Role Details: 5V LDO regulator for input power rail - Role: Power Conversion **Pins:** - GND [pin 1] - VI [pin 3] - VO [pin 2] ### U7 — [AMS1117-3.3](https://www.flux.ai/vasy_skral/ams1117-33~34.md) - Role: Power Conversion - Datasheet URL: http://www.advanced-monolithic.com/pdf/ds1117.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 3.3V LDO regulator for FEM and logic supply - Manufacturer Name: AMS - Manufacturer Part Number: AMS1117-3.3 - Part Type: Integrated Circuit - Symbol Style: Parametric **Pins:** - GND [pin 1] - TAB(VOUT) [pin 4] - VIN [pin 3] - VOUT [pin 2] ### U8 — [SN74LVC2G08IDCTRQ1](https://www.flux.ai/lcsc/sn74lvc2g08idctrq1~rhtk.md) - Part Type: Gates - Manufacturer Part Number: SN74LVC2G08IDCTRQ1 - LCSC Part Number: C134114 - Manufacturer Name: TI(德州仪器) - Role Details: Generate FEM enable and alternate path switching signals - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410010303_Texas-Instruments-SN74LVC2G08IDCTRQ1_C134114.pdf - Package or Case Code: MSOP-8_L2.9-W2.8-P0.65-LS4.0-BR - JLCPCB Part Class: Extended Part - Role: Control Unit},{ - Product Info Url: https://lcsc.com/product-detail/74-Series_TI_SN74LVC2G08IDCTRQ1_SN74LVC2G08IDCTRQ1_C134114.html **Pins:** - 1A [pin 1] - 1B [pin 2] - 1Y [pin 7] - 2A [pin 5] - 2B [pin 6] - 2Y [pin 3] - GND [pin 4] - VCC [pin 8] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/aircable/rfamp~ev](https://www.flux.ai/aircable/rfamp~ev).* --- *Generated from [https://www.flux.ai/aircable/rfamp~ev](https://www.flux.ai/aircable/rfamp~ev)*