Low-noise amplifier modules for BTS applications

The ALM-11x36 LNAs are claimed to deliver best-in-class noise performance and high linearity with a compact package.

The modules can replace large discrete and surface-mount component counts in conventional designs, shortening design cycle time and providing board space savings.

The Avago ALM-11x36 LNA modules have low noise and high linearity, achieved through the use of the company's proprietary 0.25um GaAs Enhancement-mode pHEMT process.

Their bypass isolation eliminates the possibility of oscillation issues, and the modules also feature low bypass insertion loss and high input and output return loss.

In addition, the ALM-11x36 LNAs are equipped with a failsafe bypass function, which is especially critical for TMA applications to enable the LNA bidirectional bypass path during the absence of DC power supply.

All matching components are fully integrated within the modules and the 50ohm RF input and output pins are already internally AC coupled.

Avago said this makes the modules easy to use as the only external parts required are DC supply bypass capacitors.

The LNAs deliver optimum performance across a wide range of bands, with the ALM-11036 module covering 776-870MHz, the ALM-11136 module covering 870-915MHz, the ALM-11236 module covering 1,710-1,850MHz and the ALM-11336 module covering 1,850-1,980MHz.

All the modules share the same 7.0 x 10.0 x 1.5mm package and pin-out configuration, and are therefore suitable for common platform designs.