STEVAL-IKR002V7D SPIRIT1 169 MHz low data rate transceiver daughterboard with range extender Data brief Description The STEVAL-IKR002V7D product evaluation board is based on the SPIRIT1, a very low-power RF transceiver intended for RF wireless applications in the sub 1 GHz frequency band. The STEVAL-IKR002V7D also features an on- board external front-end module from Skyworks (SKY66100-11), which can reach a maximum output power of +27 dBm (500 mW). Features SPIRIT1 low power sub GHz transceiver in a standalone RF module tuned for 169 MHz, with external Skyworks front-end module (SKY66100-11) Modulation schemes: 2-FSK, GFSK, MSK, GMSK, OOK, and ASK Programmable air data rate: from 1 to 500 kbps Maximum output power: +27 dBm Excellent receiver sensitivity (-123 dBm) Suitable for wireless M-BUS applications Meets the tight narrow-band system requirements Low duty cycle RX/TX operation mode Automatic acknowledgment, retransmission, and timeout protocol engine AES 128-bit encryption co-processor SPI interface for microcontroller RoHS compliant February 2015 DocID025786 Rev 2 1/5 For further information contact your local STMicroelectronics sales office. www.st.comSchematic diagram STEVAL-IKR002V7D 1 Schematic diagram Figure 1. STEVAL-IKR002V7D circuit schematic (1 of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ocID025786 Rev 2