A Tunable Bandpass σδ Modulator Using Double Sampling

Chien-Hung Kuo, Chang Hung Chen, Huang Shih Lin, Shen Iuan Liu

Research output: Contribution to journalConference article

6 Citations (Scopus)


A tunable switched-capacitor (SC) bandpass delta sigma (σδ) modulator using double sampling by one input parameter is proposed. The center frequency of the modulator can be varied from fs/14 to 6fs/14 at a sampling frequency (fs) of 70MHz. Its performance can be hence improved by fine tuning the center frequency. The purposed modulator was implemented in 0.35-μm 2P4M CMOS standard technology with the core area of 4.2 mm2. The measured dynamic range of 68dB within 200kHz bandwidth can be achieved. Its power consumption is 58mW under a 3.3-V supply voltage.

Original languageEnglish
Article number1465427
Pages (from-to)3676-3679
Number of pages4
JournalProceedings - IEEE International Symposium on Circuits and Systems
Publication statusPublished - 2005 Dec 1
EventIEEE International Symposium on Circuits and Systems 2005, ISCAS 2005 - Kobe, Japan
Duration: 2005 May 232005 May 26


ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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