A 90nm CMOS Low-Power GSM/EDGE Multimedia-Enhanced Baseband Processor with 380MHz ARM9 and Mixed-Signal Extensions

摘要

Modern baseband ICs require increasing data processing capabilities for modem functionality and various multimedia features [1J. The presented baseband IC (BB-IC) has a classical dual core architecture composed of an ARM926 MCU and a TEAKlite DSP communicating via shared memory. Together with a carefully selected set of multimedia extensions and integrated analog/mixed signal features this chip facilitates a cost-effective solution for 2.5G feature phones. Furthermore, the modem functionality can be enhanced up to UMTS and HSDPA with a LI coprocessor chip, which satisfies the need for simple scalability. Due to the limited power budget, the development of a BB-IC demands system and circuit level co-design as well as an appropriate partition of digital and analog functionalities. Additionally, the use of sub-100nm CMOS technologies necessitates a trade-off between performance and leakage currents.