This report is the circuit analysis of the Texas Instruments CC1125 ultra-high performance RF narrowband transceiver. The CC1125 transceiver was designed for high performance at very low power and for use in wireless systems. The chip is intended for the ISM and SRD frequency bands at 164-192 MHz, 274-320 MHz, 410-480 MHz, and 820-960 MHz. The report includes analysis of the LNA and Mixer, IF Circuits, Power Amplifier, Current Reference and Voltage Regulator, Pulse Generator, Power Supply Pads and ESD. For more information please consult the table of contents.