SIGFOX Dual Mode Transceiver for operation in EU (ETSI)/868MHz + US (FCC)/902MHz. The ATA8520E is an out of the box solution with high integration level of SIGFOX functionalities: DBPSK modulation, SIGFOX protocol stack. The SIGFOX ID, PAC code and encryption key are stored and secured inside the chip. A serial peripheral interface provides for external control and configuration. The single chip solution offers extreme low power consumption, down to 5nA in off-mode.