Current-Integrating Amplifier and Computer Interface for SNAP Photodiode Readout

Details Current-Integrating Amplifier and Computer Interface for SNAP Photodiode Readout Current-Integrating Amplifier and Computer Interface for SNAP Photodiode Readout

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.9803b&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #98.03; Bulletin of the American Astronomical Society, V

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SNAP plans to use photodiodes for calibration in low light level applications. A current-integrating amplifier and computer interface was designed to acquire data from a photodiode detector. A simple device was prototyped using separate charge integrator and ADC ICs. A microcontroller was programmed to receive instructions from a PC to determine integration time, and then act as an intermediate step in the transfer of result data from the ADC to the PC.
This work has been supported by the National Science Foundation through grant AST-0452975 (astronomy REU program to Indiana University).

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