CAMBRIDGE, UK Delivered in a wafer-level packaging, the MAX2839AS from Maxim is a 2.3 to 2.7GHz RF transceiver set to increases data throughput and link range in nomadic and WiMAX subscriber applications.
It is the industry's first single-chip, 2.3 to 2.7GHz, WiMAX MIMO RF transceiver to come in a 3.5mm x 5.1mm WLP (wafer-level package), claims the manufacturer.
This device builds on the success of the MAX2839 (QFN package), enabling ultra-small WiMAX modules for compact fixed and mobile applications.
Using a dual-receiver architecture to mitigate RF channel fading by as much as 10dB compared to a single-receiver architecture, the transceiver maximizes data throughput in nomadic and mobile WiMAX subscriber applications such as notebook computers, express/PC cards, USB dongles, smartphones, and in-home desktop CPE modems.
The MAX2839AS is well suited for mobile WiMAX, Korean WiBro, and other OFDM-based wireless broadband systems. Designed using Maxim's SiGe BiCMOS process, both receivers feature industry leading noise figures at 2.3dB, -81dBm sensitivity for a 64-QAM signal at a 5MHz channel bandwidth, and a 95dB gain control range that is digitally controlled in 1dB steps.
Each device is factory calibrated to achieve better than -35dB EVM, -45dBc of sideband suppression, and carrier leakage of -40dBc. The transmitter features a 62dB gain control range, digitally controlled in 1dB steps.
It delivers a 0dBm linear output with a 64-QAM signal, greater than -45dBc of sideband suppression, and more than -36dB EVM, while meeting a -70dBr spectral mask. The MAX2839AS operates from a 2.7V to 3.6V supply.
A low-power shutdown mode reduces current consumption to 10microamps to save power in system-sleep/standby mode.
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