The Reserach on Design and Implementation of Biomedical Analog Interface Circuits(III)

Project: National Science and Technology CouncilNational Science and Technology Council Academic Grants

Project Details

Abstract

As the complexity of integrated circuits increases, the demanding for system applications is more and more urgent. Among them, bio-system chip is both an important and a new technology. Since few bio-system chips are now available the development is very urgent for practical applications. Therefore, this project is dedicated to important analog interface circuits for bio system chip with research emphasis on low voltage, low power, low noise and high resolution techniques. In the past two years, we have completed two research goals. They are (1) design and implementation of high resolution and low power 1.8V, 18 bit sigma-delta modulator, and (2) design and implementation of high CMRR and low power 1.8V bio-signal instrumentation amplifier with 160 dB CMRR. In the next year, we will focus the research on the design and implementation of a low power, small area and high resolution decimation filter for the low power 1.8V, 18 bit sigma-delta modulator. In this project, we plan to use two methods to optimize the design of decimator. First, we partition the general decimator which has a high over-sampling rate into three stages, and then we use the algorithmic design to optimize the design of the first stage decimation filter. Secondly, we adopt a single multiplier accumulator without RAM structure to implement the finite-impulse response (FIR) Half-band Filter. As compared to the most advanced prior art, the research target is very innovative and challenging. Those high performance circuit techniques for biomedical signal conditioning will be realized in one year to meet the required design specification and time schedule. Development results of this project shall be very innovative. Besides, this project shall be very helpful to both the academic research and technical progress of microelectronics community as well as student training on analog/mixed-signal biomedical circuit design.

Project IDs

Project ID:PB9907-12646
External Project ID:NSC99-2628-E182-052
StatusFinished
Effective start/end date01/08/1031/07/11

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