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Date: 15th Dec 2010

Gain block amplifiers from Avago for wireless base-station equipment

Avago Technologies has announced two new gain block amplifiers targeting cellular infrastructure applications. The new MGA-31589 and MGA-31689 0.5-watt gain blocks are designed to offer high linearity, high gain, superior gain flatness and low power dissipation. The MGA-31589 gain block addresses cellular and WiMAX wireless base station and other wireless systems operating between 450 to 1500 MHz, while the MGA-31689 device addresses these applications operating between 1500 to 3000 MHz.

The MGA-31x89 power amplifier family is optimized for frequency in order to deliver improved performance across all the major cellular bands - GSM, CDMA, and UMTS - plus next-generation LTE bands. The new gain blocks join with the 0.25-watt MGA-31189 and MGA-31289 devices and the 0.10-watt MGA-31389 and MGA-31489 devices to serve applications from 50 to 3000 MHz.

MGA-31x89 devices are all available in the compact, industry-standard SOT-89 package. Avago says sharing a common footprint and PCB layout allows a single design to support multiple frequencies and geographic markets with a choice of output power and the gain blocks can also replace existing market solutions as a pin-to-pin, drop-in replacement offering better linearity and power performance.

The devices' high gain can reduce the total number of RF stages needed. The performance gains of the MGA-31x89 family are made using Avago's proprietary, 0.25 µm GaAs enhancement-mode pHEMT semiconductor process.

At the typical operating condition of 5V and 146 mA, the MGA-31589 device delivers performance of 20.4 dB Gain, 45.3 dBm Output Third Order Intercept Point (OIP3), 27.2 dBm Output Power at 1 dB Gain Compression (P1dB) and 1.9 dB noise figure at 900 MHz. In addition, the MGA-31589 device delivers superior gain flatness of less than 0.2 dB across 100 MHz bandwidth.

At the typical operating condition of 5V and 168 mA, the MGA-31689 device delivers performance of 18.1 dB Gain, 44.9 dBm Output Third Order Intercept Point (OIP3), 27.6 dBm Output Power at 1 dB Gain Compression (P1dB) and 1.9 dB noise figure at 1900 MHz. The MGA-31689 device also delivers superior gain flatness of less than 0.2 dB across 100 MHz bandwidth.

Additional MGA-31589 and MGA-31689 Product Features
o Input and output pre-matched, thus only requiring a minimum amount of external RF matching components
o Excellent uniformity in product specifications to minimize yield impact
o RoHS-Compliant and MSL-1 rated SOT-89 package: lead and halogen free

Price: at $2.63 each in 10K pieces
Availability: Now

Editorial Product Rating: ** (Average Plus)

 
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