CDMA PAs raise bar on efficiency and integration - Embedded.com

CDMA PAs raise bar on efficiency and integration

Anadigics latest family of High-Efficiency-at-Low-Power (HELP) power amplifiers (PAs) for CDMA applications provide industry-leading integration, while maintaining the high level of performance offered by the previous generation, according to the company. This level of integration and performance eliminates the requirements for external voltage regulation, reducing bill of materials cost and pcb space.

These latest members are the AWT6307 for the U.S. cellular band and the AWT6308 for U.S. PCS band. The features and performance level are enabled by Anadigics' InGaP-Plus technology, which integrates bipolar and field-effect transistor (FET) structures on the same InGaP GaAs die. The PAs achieve the high efficiency across different output power levels, specifically at low- and mid-range levels where the PA typically operates, thereby increasing handset talk and standby times.

The PAs provide an efficiency of 20% at +16 dBm and 40% at +28 dBm. The quiescent current is 16 mA and the leakage current is less than 1 ╬ťA. The parts are offered in 3- by 3- by 1-mm modules and are designed for applications that require European Union's Restriction of Hazardous Substances (RoHS) solutions. In quantities of 10,000, the parts sell for $1.29. Samples are available now. For additional information, visit the company's Web site at www.anadigics.com.

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