Date: 20/01/2012

Another 29 dBm linear power amp from Avago for RF base station equipment

Avago Technologies has announced the new high-linearity MGA-43128 amplifier for -LTE AP, CPE, and Picocell base station equipment and this amp-chip can also serve as a base station driver amplifier.

RF input is fully matched while the output includes integrated pre-match circuitry for matching and application simplicity. An integrated bypass switch controlled attenuator provides up to 18.0 dB attenuation, and the device also has a temperature-compensated power detector on chip.

The new MGA-43128 device uses Avago proprietary 0.25 µm GaAs Enhancement-mode pHEMT process to deliver lineat o/p power and allows single 5V supply operation and useable performance down to 3.3V. The 700 MHz MGA-43128 joins Avago's 29 dBm linear power amplifier family, following the released MGA-43228 and MGA-43328 power amplifiers that cover 2300 to 2500 MHz and 2500 MHz to 2700 MHz, respectively. All devices in the series have a common package footprint to further simplify design.

The MGA-43128 is offered in a miniature 5.0 x 5.0 x 0.85 mm surface mount, 28-lead QFN package and operates over a temperature range of -40° C to +85° C. The QFN package is lead free and halogen free, and it has a moisture sensitivity rating of MSL-2a to permit a floor-life of four weeks out of the bag.

Additional MGA-43128 Product Features:

High gain of 33.4 dB
High linearity performance of 29.1 dBm Linear Pout at 2.5% error vector magnitude (EVM)
High 750 MHz efficiency: 22% PAE at Linear Pout
Switchable gain: 18 dB attenuation using one single CMOS compatible switch pin
3GPP spectral mask complaint at 29 dBm output power
Power shutdown feature with <50 uA shutdown current
Built-in output power detector

U.S. Pricing and Availability: The MGA-43128 is priced at $8.03 each in 10,000 piece quantities. Samples and production quantities are available now.