In this paper, a 2.4GHz CMOS RF transceiver design for BLE(Bluetooth Low Energy) application is presented. The fully-differential RF transceiver is compliant with Bluetooth core specification v5.0. The transceiver is comprised of low-IF receiver and zero-IF transmitter. The overall DC current consumption for continuous Tx transmission at +0dBm output power is 12mA and for continuous Rx reception at –90dBm sensitivity is 13mA. The transceiver is fabricated in 90nm CMOS process and total die size is 5.74mm2 including baseband modem and electrostatic discharge I/O pads.