General Description
The MAX2837 direct-conversion zero-IF RF transceiver is designed specifically for 2.3GHz to 2.7GHz wireless broadband systems. The MAX2837 completely integrates all circuitry required to implement the RF transceiver function, providing RF-to-baseband receive path; and baseband-to-RF transmit path, VCO, frequency synthesizer, crystal oscillator, and baseband/control interface.

FEATUREs
♦ 2.3GHz to 2.7GHz Wideband Operation
♦ Complete RF Transceiver, PA Driver, and Crystal Oscillator
    0dBm Linear OFDM Transmit Power
    -70dBr Tx Spectral Emission Mask
    2.3dB Rx Noise Figure
    Tx/Rx I/Q Error and LO Leakage Detection
    Monolithic Low-Noise VCO with -39dBc Integrated Phase Noise
    Programmable Tx I/Q Lowpass Anti-Aliasing Filter
    Sigma-Delta Fractional-N PLL with 20Hz Step Size
    45dB Tx Gain-Control Range
    94dB Receive Gain-Control Range
    60dB Analog RSSI Instantaneous Dynamic Range
    4-Wire SPI™ Digital Interface
    I/Q Analog Baseband Interface
    Digitally Tuned Crystal Oscillator
    On-Chip Digital Temperature Sensor Read-Out
♦ +2.7V to +3.6V Transceiver Supply
♦ Low-Power Shutdown Current
♦ Small 48-Pin Thin QFN Package (6mm x 6mm x 0.8mm)

APPLICATIONs
    802.16-2004 Fixed WiMAX
    Korea Wibro and 802.16e Mobile WiMAX
    Dual ModeTM WiMAX/802.11b/g Wi-Fi
    Proprietary Wireless Broadband Systems
    4G/LTE Systems