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AN4305 Datasheet(PDF) 1 Page - STMicroelectronics |
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1 / 20 page October 2013 DocID024733 Rev 1 1/20 AN4305 Application note Using the SPIRIT1 transceiver with range extender under EN 300 220 at 169 MHz Placido De Vita Introduction The SPIRIT1 is a very low power RF transceiver, intended for RF wireless applications in the sub-1 GHz band. It is designed to operate both in the license-free ISM and SRD frequency bands at 169, 315, 433, 868 and 915 MHz. This application note outlines the expected performance when using the SPIRIT1 with a range extender under EN 300 220-1 (v2.3.1, 2012-02) [2.] in the 169.400 - 169.475 MHz band, meter reading, tracking and tracing applications. The maximum allowed output power in this sub-band is +27 dBm (500 mW), this application note relates to an application designed to reach the maximum permitted power, while respecting ETSI requirements. This application note also relates to CEN/TC 294 prEN 13757-4:2011.10 [4.] requirements for the W-MBUS N-mode standard in the 169.400 - 169.475 MHz band. For details on the regulatory limits in the 169.400 - 169.475 MHz SRD frequency bands, please refer to the ETSI EN 300 220-1 v2.3.1 [2.] and ERC Recommendation 70-03 [3.]. These can be downloaded from www.etsi.org and www.ero.dk. www.st.com |
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