The MC13201 from Freescale is a RF Transceiver with Frequency 2405 to 2480 MHz, Data Rate 250 kbps, Output Power(dBm) 0 dBm (Typical), up to 3.6 dBm maximum output power, Rx Sensitivity -91 dBm, Supply Voltage 2.0 to 3.4 V. Tags: Surface Mount, IC. More details for MC13201 can be seen below.