Title :
Fully integrated AFE for WCDMA
Author :
Khalil, Waleed ; Chang, Tsung-Yuan ; Jiang, Xuewen ; Naqvi, Syed R. ; Nikjou, Babak
Author_Institution :
Cellular Commun. Div., Intel Corp., Chandler, AZ, USA
Abstract :
We present the world´s first integrated analog front-end (AFE) and audio codec IC supporting the WCDMA standard. This chip was fabricated on Intel´s 0.18μm flash +logic +analog (FLA) process technology using a 0.35μm feature size analog transistor. The AFE transmit path contains a 10-bit segmented R2R D/A, self-calibrated active RC filter and programmable gain amplifier (PGA) with a self tuning offset correction circuit. The receive path includes a programmable gain active RC filter and an 8-bit A/D with built-in offset correction. The AFE operates at 2.7 V with a current consumption of 55 mA, and total active area of 15 mm2.
Keywords :
Butterworth filters; CMOS analogue integrated circuits; biquadratic filters; cellular radio; circuit layout; code division multiple access; codecs; continuous time filters; digital-analogue conversion; operational amplifiers; power amplifiers; programmable circuits; transceivers; 2.7 V; 55 mA; WCDMA standard; audio codec IC; cell phone; die-area savings; flash-logic-analog process technology; fully integrated analog front-end; minimum design requirement; power savings; programmable gain amplifier; segmented R2R DAC; self tuning offset correction circuit; self-calibrated active RC filter; transmit path; Active filters; Band pass filters; Bandwidth; Baseband; Electronics packaging; Frequency; GSM; Integrated circuit technology; Multiaccess communication; Voltage;
Conference_Titel :
Electronics, Circuits and Systems, 2003. ICECS 2003. Proceedings of the 2003 10th IEEE International Conference on
Print_ISBN :
0-7803-8163-7
DOI :
10.1109/ICECS.2003.1301940
