FLIR LEPTON® Engineering Datasheet 
 
The information contained herein does not contain technology as defined by the EAR, 15 CFR 772, is publicly available, 
and therefore, not subject to EAR.  NSR (6/14/2018). 
Information on this page is subject to change without notice. 
Lepton Engineering Datasheet, Document Number: 500-0659-00-09 Rev: 203
 
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Figure 9 - Relative Spatial Noise after FFC vs. Number of Integrated Frames ((defaults is 8) 
 
 
3.3  Gain States 
Lepton 2.5 and 3.5 can be configured to operate in a high-gain state (the only available state in other versions of 
Lepton) or a low-gain state. The high gain state provides lower NEDT and lower intra-scene range and the low-
gain state provides higher NEDT but achieves higher intra-scene range.  Lepton provides three different gain-
selection modes: 
•  High (default) 
•  Low 
•  Automatic