16 November 2010

Avago linear PA modules extend GSM/EDGE talk time

Avago Technologies has announced new power amplifier modules (PAMs) that extend handset talk time for GSM/EDGE communications. The new ACPM-7868 PAMs are fully compatible with Qualcomm’s newest generation of chipsets that support linear quad-band GSM/EDGE operation, enabling improved power efficiency for the world’s most widely used cellular standard.

The ACPM-7868 PAMs incorporate Avago’s sixth-generation CoolPAM technology, which enhances power efficiency with digital power mode control. Two mode-control pins provide four power modes for low band and three power modes for high band. The technology delivers higher efficiency, resulting in extended talk time, says Avago. At 29dBm antenna power where talk time is measured, the technology enables a handset to save current consumption by more than 100mA compared with conventional power amplifiers, it is claimed. It also reduces quiescent current to 8.5mA typically.

“Handset manufacturers are seeing strong demand for extended talk time of EDGE,” says James Wilson, marketing director for RF and Microwave products. “Avago’s new ACPM-7868 power amplifier modules use our proprietary CoolPAM technology to deliver better power efficiency and help meet these demands,” he adds.

The ACPM-7868 PAMs feature pre-distortion by chipset for improved linearity and efficiency. The modules incorporate 50 ohm matching networks for both RF input and output. The new PAMs are manufactured on InGaP hetero-junction bipolar transistor (HBT) technology with proven reliability, temperature stability and ruggedness.

The ACPM-7868 modules are available in a compact 16-pin surface-mount package with a 5mm x 5mm footprint and a 0.9mm height that supports slim handset designs. The devices are lead-free and RoHS compliant, and have a case operating temperature range of –20°C to +90°C.

Tags: Avago

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