When sourcing RF Receiver ICs, you must prioritize Sensitivity, Power Consumption, and Frequency Range. Sensitivity (measured in dBm) determines the weakest signal the IC can reliably receive; for long-range applications, look for values below -110 dBm. Power consumption is critical for battery-operated IoT devices, where low-power sleep modes and active current under 10mA are preferred. Additionally, ensure the IC supports the specific frequency bands required for your region, such as Sub-1GHz (433/868/915 MHz) or 2.4GHz ISM bands.