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.

特性 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