Topic/Presenter: Focal Plane Array / Jon Morse

Question/Comment: 

What are the supposed readout rates/readout noise expectations for the
detector controller?

Readout modes...


Submitted by: Jon Holtzman


NIC-FPS Response:


The H-1RG QE spec is >65% over 1-2.45 mu (goal of >80%); the read noise
spec is <20 e- rms CDS for "slow" read mode (goal of <10 e- rms CDS);
the dark rate spec is 0.1 e-/s/pix (goal of 0.01 e-/s/pix); and the
spec for defects is >95% operability (goal of >98%). An array flatness
spec is not included but will be characterized upon cool-down by
Rockwell, and should be handled within our camera depth of focus.

The H-1RG supports read-out modes of 100-200 kHz (slow mode) and 5 MHz
(fast mode).  The fast mode has selectable gains (from x1 - 16).  In
addition, the H1RG can be programmed to read out a selectable "postage
stamp" sub-array at a different rate than the rest of the array.  (The
"G" in H-1RG stands for "Guide mode".) Resets can be done in a
sequential CDS (ripple) row-by-row mode, in an instantaneous (global)
mode, or pixel-by-pixel. Four columns of reference pixels are located
around the perimeter of the array (the "R" in H-1RG).


Status: Closed.