This paper proposes a multiplexing scheme to realize an I/Q channel time-interleaved (TI) band-pass sigma-delta modulator (BPSDM) that shares OTAs to minimize power consumption and silicon area for a low-IF wireless receiver. The test chip was fabricated for a 10.7-MHz IF system with a 0.35-μm CMOS process. The measured peak SNDR for a 200-kHz bandwidth is approximately 73 dB. The power consumption of the fabricated chip is 61 mW with a 3.3-V supply and the silicon area is 1.78 mm2.
|Number of pages||4|
|Journal||Proceedings - IEEE International Symposium on Circuits and Systems|
|Publication status||Published - 2007 Sep 27|
|Event||2007 IEEE International Symposium on Circuits and Systems, ISCAS 2007 - New Orleans, LA, United States|
Duration: 2007 May 27 → 2007 May 30
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering