The demand for dual-band handsets keeps increasing, and so do their power needs. Anadigics has responded with its AT6221 WCDMA power amplifier (PA), which combines the North American cellular and PCS bands. It uses the company’s InGaP-Plus technology, which integrates bipolar and FET devices on the same indium-gallium-phosphide gallium-arsenide (InGaP GaAs) die.

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According to Anadigics, the AT6221 reduces average current consumption by 75%, yielding a 25% increase in talk time. Through selectable bias modes, it achieves optimal efficiency across the low-range and mid-range output power levels. Its intelligent bias circuit reduces current consumption to 8 mA at low power levels, which Anadigics claims is the best in the world.

The 3- by 5- by 1-mm surface-mount package complies with the HSDPA standard and saves 53% of printed-circuit board (PCB) space compared to implementations using two single-band 4- by 4-mm PAs. The package also complies with the European Union’s Restrictions on Hazardous Substances (RoHS). Its built-in voltage regulator functionality eliminates the need for external switch circuitry as well.

Contact the company for pricing and availability.

Anadigics