Electronic Design

Single-Chip CDMA Modem Is Joined By RF & Analog Chips

A 50% reduction in chip size and up to 300 hours of standby time are among the benefits of MSM3100, a sixth-generation Mobile Station Modem (MSM) baseband processing IC. The chip together with RF and analog chips and software enable design of a new generation of CDMA handsets and data devices with rich feature sets. With new system hardware and software for enhanced system power control, standby times will be about 50% higher than earlier versions.MSM3100 chip contains advanced DSP functions, a USB data interface, and support for additional development tools. It also integrates analog cores such as a 13-bit linear audio codec, PLL, ADCs and DACs. Other new features include enhanced voice recognition, such as continuous digit dialing and support for large speaker-independent libraries, and on-chip acoustic echo cancellation that eliminates the need for additional hardware in automotive, PC and other speakerphone applications. The IC also offers on-chip hardware support for in-phone, GPS-based CDMA position and location services. These provide manufacturers with an integrated solution for the upcoming FCC mandate for emergency location tracking.Complementing the MSM3100 baseband chip are next-generation RF and analog chips. Included are the RFT3100 transmit and RFR3100 receive processors, which are said to offer large savings in board area with significant reductions in power consumption compared with earlier devices. Also offered is the PM1000 power management IC, which provides battery supervision and charging functions, programmable voltage regulation, and integration of other collateral support functions for CDMA handset applications.The MSM3100 is packaged in a 208-pin FBGA and will sample in the third quarter. A similar sampling schedule is in place for the RF and analog chips.

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