Silicon Laboratories' new Aerofone single-chip Si4905 IC is billed as the industry's most integrated, highest performance, easiest-to-use solution for GSM/GPRS handsets. This is the first fully functional single-chip phone to integrate the power management unit, battery interface and charging circuitry, digital baseband, analog baseband and a quad-band RF transceiver in a single monolithic 12 x 12 mm CMOS IC. This IC, which integrates an ARM9 family-based MCU, leverages SiLab's Aero II RF transceiver technology, which it says offers industry-leading RF performance including sensitivity, blocking and transmit modulation spectrum characteristics. This single-chip solution offers a flexible, scalable and easy-to-use platform for entry-level GSM/GPRS handsets without requiring additional co-processors or large software investments. According to the company, compared with other integrated baseband solutions on the market, the Si4905 single-chip phone reduces component count by 75%, board area by 65% and manufacturing costs by up to 50%.
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