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GaAs power amps tout high-OTOI performance

Posted: 19 Sep 2006 ?? ?Print Version ?Bookmark and Share

Keywords:TriQuint? TGA4530? power amplifiers? PAs?

RFIC house TriQuint Semiconductor is poised to roll out two high-output third-order intercept (OTOI) gallium arsenide (GaAs) power amplifiers (PAs). These PAs promise to be smaller, lower-cost alternatives to previous-generation products.

The TGA4530s could be used for coverage of 17GHz through 21GHz for applications. They will be available in both monolithic microwave IC (MMIC) form-factors and in industry-standard plastic surface-mount packages.

TriQuint's TGA4530 and TGA4530-SM devices are designed for point-to-point radio, K-band satellite communications, and point-to-multipoint network applications. The TGA4530 is a MMIC version; the TGA4530-SM is packaged.

In either case, these devices tout OTOI performance that ensures higher data rates, improved system efficiency and longer range transmissions. These RFICs will also include an on-chip power detectors. That can reduce a BOM. They will also include protective surface passivation layers.

A TGA4530 provides 42dBm OTOI and 30dBm (1W) output power (at the 1dB compression point at a bias of 7V; 825mA Idq). Typical gain is 20dB, with input and output return losses of 15dB.

The MMIC's small size is achieved using TriQuint's 0.25?m power pHEMT 3-metal-layer interconnect (3MI) production process.

Evaluation boards are available; these products are Pb-free and RoHS-compliant.

- Alex Mendelsohn

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