Single chip phone

1 min read

Silicon Laboratories has developed a single-chip phone for GSM/GPRS handsets.

Silicon Laboratories

Si4905 AeroFONE is a single-chip phone for GSM/GPRS handsets that integrates the power management unit (PMU), battery interface and charging circuitry, digital baseband, analog baseband and a quad-band RF transceiver in a single monolithic CMOS IC.

Compared to 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%.

The Si4905 has an integrated digitally-controlled crystal oscillator, which eliminates the expensive external VC-TCXO modules used in competing solutions. The Si4905 also integrates 2 Mbits of on-chip SRAM, which enables handset manufacturers to build GSM cell phones without the need for external SRAM. The AeroFONE single-chip phone also integrates an ARM9 family-based MCU.

Handset developers can either run their existing software on the device or select one of the protocol stacks and application software frameworks validated by Silicon Laboratories and its partners including TTPCom, CCww and Stackcom. The AeroFONE software suite also includes system driver libraries.

The Si4905 is available in a standard 12 x 12 mm, lead-free, RoHS-compliant plastic ball grid array (PBGA) package. Pricing is dependent on volume. The Si4905 is sampling now, with mass production scheduled for Q2 2006. An evaluation platform is available for $5,000.