Avago amplifier cleans signal quality and drops power usage

Avago Technologies announced a high-gain, high-linearity power amplifier for high-data-rate applications found in 700-800 MHz cellular infrastructure equipment. The new MGA-43128 amplifier is designed to improve signal transmission with low power consumption for LTE AP, CPE, and picocell equipment. It also serves 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.

Linear output power is achieved by using an Avago proprietary 0.25 µm GaAs Enhancement-mode pHEMT process, which allows single 5V supply operation and useable performance down to 3.3V. The MGA-43128 has a  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 Features

• Gain of 33.4 dB
• Linearity performance of 29.1 dBm linear Pout at 2.5% error vector magnitude (EVM)
• 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

The MGA-43128 is priced at $8.03 each in 10,000 piece quantities. Samples and production quantities are available now through the Avago direct sales channel and via worldwide distribution partners. An evaluation board is also available.

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