Matching Items (43)
Filtering by
- All Subjects: Jazz
- All Subjects: MEMS
- Creators: Crotty, Mike, 1950-
Description
Micro Electro Mechanical Systems (MEMS) is one of the fastest growing field in silicon industry. Low cost production is key for any company to improve their market share. MEMS testing is challenging since input to test a MEMS device require physical stimulus like acceleration, pressure etc. Also, MEMS device vary with process and requires calibration to make them reliable. This increases test cost and testing time. This challenge can be overcome by combining electrical stimulus based testing along with statistical analysis on MEMS response for electrical stimulus and also limited physical stimulus response data. This thesis proposes electrical stimulus based built in self test(BIST) which can be used to get MEMS data and later this data can be used for statistical analysis. A capacitive MEMS accelerometer is considered to test this BIST approach. This BIST circuit overhead is less and utilizes most of the standard readout circuit. This thesis discusses accelerometer response for electrical stimulus and BIST architecture. As a part of this BIST circuit, a second order sigma delta modulator has been designed. This modulator has a sampling frequency of 1MHz and bandwidth of 6KHz. SNDR of 60dB is achieved with 1Vpp differential input signal and 3.3V supply
ContributorsKundur, Vinay (Author) / Bakkaloglu, Bertan (Committee member) / Ozev, Sule (Committee member) / Kiaei, Sayfe (Committee member) / Arizona State University (Publisher)
Created2013
Description
High speed current-steering DACs with high linearity are needed in today's applications such as wired and wireless communications, instrumentation, radar, and other direct digital synthesis (DDS) applications. However, a trade-off exists between the speed and resolution of Nyquist rate current-steering DACs. As the resolution increases, more transistor area is required to meet matching requirements for optimal linearity and thus, the overall speed of the DAC is limited.
In this thesis work, a 12-bit current-steering DAC was designed with current sources scaled below the required matching size to decrease the area and increase the overall speed of the DAC. By scaling the current sources, however, errors due to random mismatch between current sources will arise and additional calibration hardware is necessary to ensure 12-bit linearity. This work presents how to implement a self-calibration DAC that works to fix amplitude errors while maintaining a lower overall area. Additionally, the DAC designed in this thesis investigates the implementation feasibility of a data-interleaved architecture. Data interleaving can increase the total bandwidth of the DACs by 2 with an increase in SQNR by an additional 3 dB.
The final results show that the calibration method can effectively improve the linearity of the DAC. The DAC is able to run up to 400 MSPS frequencies with a 75 dB SFDR performance and above 87 dB SFDR performance at update rates of 200 MSPS.
In this thesis work, a 12-bit current-steering DAC was designed with current sources scaled below the required matching size to decrease the area and increase the overall speed of the DAC. By scaling the current sources, however, errors due to random mismatch between current sources will arise and additional calibration hardware is necessary to ensure 12-bit linearity. This work presents how to implement a self-calibration DAC that works to fix amplitude errors while maintaining a lower overall area. Additionally, the DAC designed in this thesis investigates the implementation feasibility of a data-interleaved architecture. Data interleaving can increase the total bandwidth of the DACs by 2 with an increase in SQNR by an additional 3 dB.
The final results show that the calibration method can effectively improve the linearity of the DAC. The DAC is able to run up to 400 MSPS frequencies with a 75 dB SFDR performance and above 87 dB SFDR performance at update rates of 200 MSPS.
ContributorsJankunas, Benjamin (Author) / Bakkaloglu, Bertan (Thesis advisor) / Kitchen, Jennifer (Committee member) / Ozev, Sule (Committee member) / Arizona State University (Publisher)
Created2014
ContributorsMarohnic, Chuck (Performer) / Morgan, Lanny (Performer) / Chuck Marohnic Trio (Performer) / ASU Library. Music Library (Publisher)
Created1990-09-12
ContributorsCrotty, Mike, 1950- (Director) / Moio, Dom (Contributor) / Jazz Bones (Performer) / Latin Ensemble (Performer) / ASU Library. Music Library (Publisher)
Created2003-03-31
ContributorsCrotty, Mike, 1950- (Director) / New Music Jazz Ensemble (Performer) / ASU Library. Music Library (Publisher)
Created2005-04-20
ContributorsFoster, Gary (Performer) / Kelly, Keith (Performer) / Lloyd, Michael (Performer) / Marshall, Shea (Performer) / Crotty, Mike, 1950- (Performer) / Lennex, Matt (Performer) / Stephan, Garrett (Performer) / O'Neill, Deater (Performer) / Mottola, Anna Maria (Performer) / Schuster, Aaron (Performer) / Moore, Rob (Performer) / New Music Jazz Ensemble (Performer) / ASU Library. Music Library (Publisher)
Created2003-04-02
ContributorsCrotty, Mike, 1950- (Director) / Concert Jazz Band (Performer) / ASU Library. Music Library (Publisher)
Created2004-03-30
ContributorsCrotty, Mike, 1950- (Director) / Concert Jazz Band (Performer) / ASU Library. Music Library (Publisher)
Created2005-04-12
ContributorsCrotty, Mike, 1950- (Performer) / O'Neill, Deater (Performer) / Vadala, Chris (Performer) / Marohnic, Chuck (Performer) / Jones, Warren (Performer) / Moio, Dom (Performer) / ASU Library. Music Library (Publisher)
Created1999-03-11
ContributorsBerry, John (Performer) / Morgan, Lanny (Performer) / Concert Jazz Band (Performer) / ASU Library. Music Library (Publisher)
Created1986-03-05