The Si406x devices are high-performance, low-current transmitters covering the sub-GHz frequency bands from 142 to 1050 MHz. The radios are part of the EZRadioPRO® family, which includes a complete line of transmitters, receivers and transceivers covering a wide range of applications. All parts offer extremely low active and standby current consumption. The Si406x includes optimal phase noise performance for narrow band applications, such as FCC Part90 and 169 MHz wireless M-Bus. The Si4063 offers exceptional output power of up to +20 dBm with outstanding TX efficiency. The high output power allows extended ranges and highly robust communication links. The Si4060 active mode TX current consumption of 18 mA at +10 dBm coupled with extremely low standby current and fast wake times ensure extended battery life in the most demanding applications.