Page History

To verify STA's quoted read noise, SN31179 was operated in free-run, 2-d mode at different temperatures, spanning -100C to 40Cspanning  173k to 233k.  In this test, read noise is approximated by the array average standard deviation along a single column, with the result averaged across all 4096 columns.  This estimate would include any contributions from non-uniformity along a column, but the result come out very close the STA's quoted noise so it seems a decent proxy for read noise.  The array average pixel dark signal (pedestal, averaged along a column and then averaged across all columns) increased nearly linearly, suggesting that thermal leakage is not dominant.  Over the same range the calculated read noise increased modestly, from 4.1e to 5e.

2d Read Noise vs. Temperature

Image AddedImage Added

Switching to 1d mode and using the external trigger feature to set the frame rate, a sweep of read noise vs 1d frame rate was obtained.