Poing – 10th July 2008

Avnet Memec, the highly specialised semiconductor distributor of Avnet Electronics Marketing EMEA, adds the new MAX2839 of Maxim
Integrated Products to its portfolio. The industry's first single-chip, 2.3GHz to 2.7GHz, WiMAX™ MIMO RF transceiver uses a dual-receiver architecture to mitigate RF channel fading, thereby increasing the signal-to-noise ratio (SNR) by as much as 10dB compared to a single-receiver architecture. This improved performance maximizes the data throughput and radio-link range of nomadic and mobile WiMAX subscriber applications in notebook computers, express/PC cards, smartphones, and in-home desktop CPE modems. The MAX2839 is ideal for mobile WiMAX, Korean WiBro, and other OFDM-based wireless broadband systems. The device is in high-volume production.

Designed using Maxim's in-house, high-performance SiGe BiCMOS process, the MAX2839 provides the industry's best receiver noise performance. Both of the two receivers feature the industry's lowest noise figure at 2.3dB, -81dBm sensitivity for a 64-QAM signal at 5MHz channel bandwidth, and a 95dB gain control range that is digitally controlled in 1dB steps. Factory calibrated to achieve better than -35dB EVM, -45dBc of sideband suppression, and carrier leakage of -40dBc without DC-offset correction, the receivers significantly simplify integration with the digital MAC/baseband IC.

On the transmitter, the MAX2839 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 MAX2839 operates from a 2.7V to 3.6V supply. A low-power shutdown mode reduces current consumption to 10 microamps to save power in system-sleep/standby mode. This transceiver is available in a small, 8mm x 8mm, leadless, 56-pin TQFN package. An evaluation kit is available.

Avnet Memec, an independent business unit of Avnet Electronics Marketing EMEA, is a highly specialised semiconductor distributor, operating on a pan-European basis and employing a significant number of engineers to support customers’ design efforts. Avnet Memec specialises in highly innovative suppliers and technologies, which will help a variety of customers to differentiate their designs. Its area of specialisation extends from Analog and Microcontrollers to RF, Datacom and Networking. The business unit operates out of 30 offices in 17 European countries and represents major semiconductor franchises on a pan-European basis.