Texas Instruments provides a recommended PCB layout in the CC1100ERTKT datasheet, but it's also recommended to follow the guidelines in the 'CC1100 PCB Layout Guidelines' application note (SWRA122) for optimal performance.
Optimizing the CC1100ERTKT's performance requires a deep understanding of the device's registers and settings. TI provides a 'CC1100 Optimizer' tool that helps engineers optimize the device's settings for their specific application. Additionally, the 'CC1100 Optimizer User's Guide' (SWRU185) provides detailed information on how to use the tool.
The maximum transmission power of the CC1100ERTKT is +10 dBm, but it can be adjusted using the PATABLE register. However, it's essential to ensure that the transmission power complies with the relevant regulatory requirements for your region.
Frequency hopping can be implemented using the CC1100ERTKT's built-in frequency synthesizer and the FHSS (Frequency Hopping Spread Spectrum) mode. TI provides an 'FHSS Implementation with the CC1100' application note (SWRA123) that provides detailed information on how to implement frequency hopping with the device.
The CC1100ERTKT's sensitivity is typically around -105 dBm, but it can be improved by optimizing the device's settings, using an external LNA (Low Noise Amplifier), and ensuring a good PCB layout. TI provides a 'CC1100 Receiver Sensitivity' application note (SWRA124) that provides detailed information on how to improve the device's sensitivity.