SEMICONDUCTOR INTEGRATED CIRCUITS

Design of an analog front-end for ambulatory biopotential measurement systems

Wang Jiazhen, Xu Jun, Zheng Lirong and Ren Junyan

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Abstract: A continuously tunable gain and bandwidth analog front-end for ambulatory biopotential measurement systems is presented. The front-end circuit is capable of amplifying and conditioning different biosignals. To optimize the power consumption and simplify the system architecture, the front-end only adopts two-stage amplifiers. In addition, careful design eliminates the need for chopping circuits. The input-referred noise of the system is only 1.19 μVrms (0.482000 Hz). The chip is fabricated via a SMIC 0.18 μm CMOS process. Although the power consumption is only 32.1 μW under a 3 V voltage supply, test results show that the chip can successfully extract biopotential signals.

Key words: analog front-end

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    Received: 18 August 2015 Revised: 24 May 2010 Online: Published: 01 October 2010

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      Wang Jiazhen, Xu Jun, Zheng Lirong, Ren Junyan. Design of an analog front-end for ambulatory biopotential measurement systems[J]. Journal of Semiconductors, 2010, 31(10): 105004. doi: 10.1088/1674-4926/31/10/105004 Wang J Z, Xu J, Zheng L R, Ren J Y. Design of an analog front-end for ambulatory biopotential measurement systems[J]. J. Semicond., 2010, 31(10): 105004. doi:  10.1088/1674-4926/31/10/105004.Export: BibTex EndNote
      Citation:
      Wang Jiazhen, Xu Jun, Zheng Lirong, Ren Junyan. Design of an analog front-end for ambulatory biopotential measurement systems[J]. Journal of Semiconductors, 2010, 31(10): 105004. doi: 10.1088/1674-4926/31/10/105004

      Wang J Z, Xu J, Zheng L R, Ren J Y. Design of an analog front-end for ambulatory biopotential measurement systems[J]. J. Semicond., 2010, 31(10): 105004. doi:  10.1088/1674-4926/31/10/105004.
      Export: BibTex EndNote

      Design of an analog front-end for ambulatory biopotential measurement systems

      doi: 10.1088/1674-4926/31/10/105004
      • Received Date: 2015-08-18
      • Accepted Date: 2010-04-15
      • Revised Date: 2010-05-24
      • Published Date: 2010-10-05

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