Freescale RFX300-30 3G Multiband RF Subsystem

The Freescale RFX300-30 is an ultra small 3G multiband form factor RF subsystem for handset design. The new solution combines Freescale’s EDGE and UMTS technologies into a single, integrated package, enabling dramatic board and cost savings. Significantly reducing time to first call, the new RF subsystem provides a simple programming model for fast, easy implementation and is the first to incorporate an open standard digital interface.

The RFX300-30 3G RF subsystem features a single integrated package that supports both multimode/multiband UMTS and EDGE networks. With up to 13 bands supported, the RFX300-30 offers the broadest multiband support in the smallest form-factor solution for handset manufacturers today. Processed in 90nm CMOS technology, Freescale’s RF subsystem delivers tremendous benefit for handset manufacturers, including:

  • Four band GSM/EDGE support
  • Nine band UMTS support
  • HSDPA support up to 7.2 Mbps
  • HSUPA support up to 5.76 Mbps

The RFX300-30 subsystem combines the analog baseband, RF transmitter, RF receiver, power amplifier and power control and many traditionally passive components into two packages. Specifically, the RFX300-30 consists of Freescale’s MMM7210 UMTS/EDGE transceiver and the MMM6038 EDGE power amplifier. The MMM7210 transceiver combines quad-band GSM/EDGE functionality with up to four of nine UMTS bands, providing support for up to eight total bands at any given time.

Freescale’s innovative layer-one programming function has proven to reduce time to first call by up to 66%. Previously, an engineer programming the baseband to control the RF transceiver would need to consider all the critical timing between the transceiver, power amplifiers, switches, low noise amplifiers, baseband processor and voltage regulators. These dependencies require a significant investment in time to complete phone development successfully.

With Freescale’s revolutionary approach, an engineer enters a single command stating the desired channel and power level. This command sets the parameters and times the events such that system compliance is virtually assured. Freescale’s programming method uses single-command programming that reduces calibration steps and practically guarantees compliance.

As the first to incorporate an open standard digital interface for 3G, the RFX300-30 allows phone manufacturers to incorporate components from various suppliers with the confidence that they will all work together. Freescale was among the first companies to build and deliver DigRF-compliant radios in mass production.

The RFX300-30 EDGE RF subsystem is sampling now with production slated for Q407.

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