A single-chip dual-band CDMA2000 receiver for cellular terminals in 0.13 μm CMOS

Keeping pace with the steady advances in the development of even finer gate length technologies, CMOS has established as preferred process for radio-frequency design that enables the integration of complex digital circuitry on the same die at reasonable costs in terms of required area and power consumption. A single-chip dual-band CDMA2000 receiver based on zero-IF architecture is presented. In addition to all required analog building blocks for reception in the North-American cellular and PCS bands (Band Class 0 and 1), the chip features a fully integrated synthesizer including VCOs for minimum external component count, analog anti-aliasing filters, a fully configurable digital-front-end (DFE), Delta Sigma ADCs, a high-speed digital serial baseband (BB) interface, and a three-wire-bus configuration interface. The DFE's functionality includes sample-rate-conversion, channel filtering, dynamic range control, and signal conditioning for data transmission via a digital interface between RFIC and baseband IC. The receiver IC with a die size of 8 nun 2 has been fabricated in 0.13-mu m RF-CMOS and shows an error-vector-magnitude (EVM) of 3.1 % and a Rho of 0.998 at the digital baseband interface.