General Description

The MAX2700/MAX2701 are highly integrated direct downconversion (zero-IF) receivers designed for wideband wireless local loop (WLL) systems operating in the 1.8GHz to 2.5GHz band. The MAX2700/MAX2701s’ zero-IF architecture eliminates the need for IF down conversion stages and the use of an IF SAW filter. This reduces the overall receiver cost by reducing the component count and required board space.

Features

♦ Input Frequency Range

    1.8GHz to 2.1GHz (MAX2700)

    2.1GHz to 2.5GHz (MAX2701)

♦ Cascaded Performance at 1960 MHz

    3.5dB Noise Figure

    -7.5dBm Input IP3 at Maximum Gain

♦ LNA with Selectable Gain and Shutdown Option

♦ High Linearity Direct I/Q Downconverter

♦ Wideband LO Quadrature Generator

♦ 3dB Baseband Channel Bandwidth of At Least 56MHz

♦ Variable Gain Baseband Amplifiers with >60dB Control Range

♦ Baseband Gain Offset Correction Loop

♦ +2.7V to +3.3V Single-Supply Operation

♦ Small 48-pin TQFP-EP Package

Applications

    Wireless Local Loop

    Wideband Direct-Sequence Spread-Spectrum Systems

    Two-Way MMDS

    Wideband 2.4GHz ISM Radios

    Digital Microwave Radios