General Description

The MAX2831/MAX2832 direct conversion, zero-IF, RF transceivers are designed specifically for 2.4GHz to 2.5GHz 802.11g/b WLAN applications.

Features

♦ 2.4GHz to 2.5GHz ISM Band Operation

♦ IEEE 802.11g/b Compatible (54Mbps OFDM and 11Mbps CCK)

♦ Complete RF Transceiver, PA, and Crystal Oscillator (MAX2831)

    Best-in-Class Transceiver Performance

    62mA Receiver Current

    2.6dB Rx Noise Figure

    -76dBm Rx Sensitivity (54Mbps OFDM)

    No I/Q Calibration Required

    0.1dB/0.35° Rx I/Q Gain/Phase Imbalance

    33dB RF and 62dB Baseband Gain Control Range

    60dB Range Analog RSSI per RF Gain Setting

    Fast Rx I/Q DC-Offset Settling

    Programmable Baseband Lowpass Filter

    20-Bit Sigma-Delta Fractional-N PLL with < 20Hz Step Size

    Digitally Tuned Crystal Oscillator

    +18.5dBm Transmit Power (5.6 EVM with 54Mbps OFDM)

    31dB Tx Gain Control Range

    Integrated Power Detector (MAX2831)

    Serial or Parallel Gain-Control Interface

    > 40dB Tx Sideband Suppression without Calibration

    Tx/Rx I/Q Error Detection

♦ Transceiver Operates from +2.7V to +3.6V

♦ PA Operates from +2.7V to +4.2V (MAX2831)

♦ Low-Power Shutdown Mode

♦ Small 48-Pin Thin QFN Package (7mm x 7mm x 0.8mm)

Applications

    Wi-Fi, PDA, VOIP, and Cellular Handsets

    Wireless Speakers and Headphones

    General 2.4GHz ISM Radios