Maxim Integrated MAX2022
The MAX2022 low-noise, high-linearity, direct conversion quadrature modulator/demodulator is designed for single and multicarrier 1500MHz to 3000MHz UMTS/WCDMA, LTE/TD-LTE, cdma2000®, and DCS/PCS base-station applications. This device includes two matched passive mixers for modulating or demodulating in-phase and quadrature signals, three LO mixer amplifier drivers, and an LO quadrature splitter. In addition to offering excellent linearity and noise performance, the MAX2022 also yields a high level of component integration.GENERAL DESCRIPTION
Direct conversion architectures are advantageous since they significantly reduce transmitter or receiver cost, part count, and power consumption as compared to traditional IF-based double conversion systems. On-chip baluns are also integrated to allow for single-ended RF and LO connections. As an added feature, the baseband inputs have been matched to allow for direct interfacing to the transmit DAC, thereby eliminating the need for costly I/Q buffer amplifiers. The MAX2022 operates from a single +5V supply. It is available in a compact 36-pin TQFN package (6mm x 6mm) with an exposed paddle. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range.APPLICATIONS
● Single and Multicarrier WCDMA/UMTS and LTE/TD-LTE Base Stations● Single and Multicarrier cdmaOne™ and cdma2000 Base Stations
● Single and Multicarrier DCS 1800/PCS 1900 EDGE Base Stations
● PHS/PAS Base Stations
● Predistortion Transmitters
● Fixed Broadband Wireless Access
●...