Chip Design and Implementation of a High Performance Bio-Signal Amplifier Ii

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 the important unified current-mode amplification circuit with multi-purpose functions for bio system chips with research emphasis on single power supply, low voltage, low power, low noise and high CMRR techniques. The achieved unified current-mode instrumentation amplifier can be applied to the amplification processing of (1) bio-medical signals such as ECG/EEG voltage signals induced by electrodes; and (2) bio-signal currents acquired from bio/chemical sensors. In this project, the key research targets are the chip design and implementation of a unified high performance current-mode instrumentation amplifier with module circuits as below (1) a uW power and 120 dB CMRR current-mode instrumentation amplifier for bio-voltage signals processing (100/8~101/7); (2) a uW power and -50 dB THD current amplifier for bio-current signals processing (101/8~102/7). Finally, circuit integrations will be completed. Many circuit design techniques will be proposed in this project to improve the circuit performance of this unified current-mode instrumentation amplifier with multi-purpose functions. As compared to the most advanced prior art, the research target is very innovative and challenging. Those high performance circuit techniques for current-mode bio-signals amplifying processing 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 ID:PB10108-2654
External Project ID:NSC101-2221-E182-076