IOWA STATE UNIVERSITY
Department of Electrical and Computer Engineering
Advisor: Dr. Degang Chen
Team members: Yifan Jiang, Tao Chen, Scott Poder
Project Abstract:
Accurate spectral test is widely used in science and engineering. In particular, accurate spectral test is critical to high performance data converters used base stations, medical instruments, seismic signal detection, military applications, and so on. IEEE standards and prevalent industry solutions impose several stringent requirements on the linearity of input signals, on exact coherency in sampling, and on tolerable jitter in the clock signal. All of these requirements make accurate spectral testing expensive and time consuming, and make the test setup difficult to maintain and calibrate.
The goal of this project is to develop a prototype test system for Extremely Cost-Effective Spectral Test. Recently published spectral test algorithms will be implemented for dramatically relaxing the stringent requirements. Help from graduate students who specialize in these algorithms will be provided. Concrete objective is to demonstrate a PCB test system for very low-cost, high-accuracy full spectrum test for high performance ADCs from Texas Instruments. TI engineers will be available for consultation on ADC selection, ADC interface circuits, and PCB design. The PCB may include a low cost sine wave generator, a clock generator, a low-order RC filter block, an ADC input driver, a socket for an ADC under test, and ADC output collection. The collected data will be transferred to a computer for analysis and display. Spectral test results will be compared with results obtained from Audio Precision instruments.
Expected Deliverables:
A PCB designed, fabricated, and demonstrated for functionality. Matlab programs developed, debugged, and demonstrated for data collection, test results display, and user interface.
Team members: Yifan Jiang, Tao Chen, Scott Poder
Project Abstract:
Accurate spectral test is widely used in science and engineering. In particular, accurate spectral test is critical to high performance data converters used base stations, medical instruments, seismic signal detection, military applications, and so on. IEEE standards and prevalent industry solutions impose several stringent requirements on the linearity of input signals, on exact coherency in sampling, and on tolerable jitter in the clock signal. All of these requirements make accurate spectral testing expensive and time consuming, and make the test setup difficult to maintain and calibrate.
The goal of this project is to develop a prototype test system for Extremely Cost-Effective Spectral Test. Recently published spectral test algorithms will be implemented for dramatically relaxing the stringent requirements. Help from graduate students who specialize in these algorithms will be provided. Concrete objective is to demonstrate a PCB test system for very low-cost, high-accuracy full spectrum test for high performance ADCs from Texas Instruments. TI engineers will be available for consultation on ADC selection, ADC interface circuits, and PCB design. The PCB may include a low cost sine wave generator, a clock generator, a low-order RC filter block, an ADC input driver, a socket for an ADC under test, and ADC output collection. The collected data will be transferred to a computer for analysis and display. Spectral test results will be compared with results obtained from Audio Precision instruments.
Expected Deliverables:
A PCB designed, fabricated, and demonstrated for functionality. Matlab programs developed, debugged, and demonstrated for data collection, test results display, and user interface.