High voltage CMOS devices and systems for lab-on-a-chip applications

• Author / Creator

  Al-Haddad, Wesam Ahmed

• We have developed several generations of high voltage (HV) integrated circuits that provide micro-scale platforms for lab-on-a-chip applications. This thesis presents novel HV devices and circuits that lead to further miniaturization and minimize the dependence on off-chip components. A 4-terminal device is designed and built by introducing a contact in the drift region while ensuring its complete depletion. A linear 40V DRIFT device demonstrates functionality and is integrated into a new static level shifter circuit that is smaller and does not require a voltage bias as is used in the current static level shifter. An on-chip charge pump that can generate voltages beyond 50V is proposed as an alternative to boost converters that require large external inductors. Design techniques such as clock slewing are introduced to mitigate the effects of parasitic bipolar transistors while maintaining sufficient charge transfer between stages.

• Subjects / Keywords

  • Lab-on-a-chip applications
  • Clock slewing
  • High voltage integrated circuits

• Graduation date

  Fall 2010

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R3Z644

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.