PRODUCT SUMMARY SKY68001-31: LTE Universal Multi-Band Front-End Module for IoT AUX2 Applications Rx LPF Cellular IoT modem devices targeting low-power wide area MB RX network (LPWAN): LB RX 4G LTE technology capability ANT Dedicated LTE half-duplex operation (HD-FDD) for MB TX PA LTE-M/NB-IoT Designed to meet 3GPP Rel-12 and Rel-13 specifications (with compatible cellular transceiver) PA LB TX Tx LPF LTE universal modem products (low-band and mid-band): MIPI Low-band B5/B8/B12/B13/B17/B18/B19/B20/B26 204523-001 Mid-band B1/B2/B3/B4/B25/B39/B66 AUX1 PAE optimized for Class 3 LTE output power (+23 dBm) Figure 1. SKY68001-31 Functional Block Diagram Features Description The SKY68001-31 is a hybrid, multi-band multi-chip RF front-end Cost-optimized front end for low-data-rate applications (RFFE) module supporting cellular LTE-M/NB-IoT Low-loss post-PA transmit front end for enhanced transmitter (half-duplex system) transceiver platforms. The module integrates efficiency (compared to LTE-FDD radio front ends) the entire RF front end necessary for an LTE multi-band radio Broadband PA supporting APT mode of operation or Vcc fixed operating in low-band B5/B8/B12/B13/B17/B18/B19/B20/B26 supply ( 2.85 V) and mid-band B1/B2/B3/B4/B25/B39/B66 frequencies, including Rx low-pass filters, broadband PA with bias controller, Tx low- Integrated low-pass filters for harmonic rejection to comply with pass harmonic filter, antenna switch, and MIPI RFFE controller. spurious emission requirements Integrated SP6T antenna Tx/Rx switch Tx Section Integrated Rx low-pass filters for out-of-band rejection The PA load-line is optimized for high efficiency while Optimized to support LTE for 1 to 6 RB simultaneously meeting 3GPP ACLR and emissions mask MIPI RFFE control interface, 2.0 compliant specifications with LTE up to 6 RB. An integrated LPF is implemented to reject the PA and transceiver harmonics while at Pin-to-pin compatible with the SKY68000-31 and SKY68011-31 the same time minimizing any post PA loss for an optimized Two additional Aux ports offer greater flexibility for more bands transmit current consumption. Out-of-band emissions on the Tx or Rx path performance is emphasized by the design to be 3GPP-compliant for B5/B8/B12/B13/B17/B18/B19/B20/B26 and mid-band Adaptive biasing scheme for maximum PA efficiencies B1/B2/B3/B4/B25/B39/B66. Small, low-profile package (4 mm x 5 mm x 0.9 mm) (MSL3 260 C per JEDEC J-STD-020) Rx Section Lead (Pb)-free and RoHS-compliant Receive low-pass filters are integrated into the module along with the necessary matching to yield a 50 single-ended impedance TM Skyworks Green products are compliant with for the antenna and Rx ports. The filters provide a high level of all applicable legislation and are halogen-free. rejection to out-of-band interferers, protecting the transceiver For additional information, refer to Skyworks from high blocking signal levels and to support 3GPP LTE blocking TM Denition of Green , document number test conformance. The Rx low-pass filters are cascaded with the SQ040074. low throw count switch to establish a lower insertion loss and noise figure than conventional LTE receivers. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 204648C Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice July 27, 2018 1 PRODUCT SUMMARY SKY68001-31: LTE UNIVERSAL MULTI-BAND FRONT-END MODULE FOR IoT Auxiliary Paths The two AUX ports are additional broadband ports that can be The key advantages of the smart biasing scheme are: used symmetrically for either Tx or Rx operation. The AUX ports Saving current consumption during lower output power can support conventional GSM power levels. operation Smart Biasing Easy programming of fixed-gain steps through the MIPI For most IoT applications, the DC-DC converter might not be interface available to control the VCC supply of the PA. With a fixed DC Reducing the required output dynamic range of the transceiver. supply, Smart Biasing allows for easy power control through the MIPI interface by programming reduced bias current for lower MIPI RFFE Controller Interface gain states. Based on the application, a set of 4 to 6 different bias conditions with specific fixed-gain steps are predefined. For each The SKY68001-31 functional operation is fully controllable by a of the steps, the transceiver output power can be adjusted to single MIPI interface that is used to drive the PA in various meet the desired total output power. optimized bias modes as well as providing band selection and controlling the antenna switch Tx, Rx, and band selection. Figure 1 shows the block diagram for the SKY68001-31. Ordering Information Part Number Product Description Evaluation Board Part Number SKY68001-31 LTE Multi-Band Front-End Module for IoT SKY68001-31EK1 Copyright 2017-2018 Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. (Skyworks) products or services. These materials, including the information contained herein, are provided by Skyworks as a service to its customers and may be used for informational purposes only by the customer. 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Skyworks assumes no liability for applications assistance, customer product design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters. Skyworks and the Skyworks symbol are trademarks or registered trademarks of Skyworks Solutions, Inc. or its subsidiaries in the United States and other countries. Third-party brands and names are for identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 July 27, 2018 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 204648C