High Frame Rate and Dual Band Infrared Focal Plane Array (FPA) Sensors

In Phase II, Nu-Trek will develop a digital readout integrated circuit (DROIC) and hybridize it to a long wave/long wave (LWIR/LWIR) strained layer superlattice (SLS) detector to form a digital Sensor Chip Assembly (SCA). The Nu-Trek DROIC is being designed to enhance operation of SLS LWIR/LWIR detectors as well as to provide a cost effective solution. Performance is enhanced since the SCA will have a higher signal to noise ratio due to the large effective well, longer integration times, and higher injection efficiency resulting from the use of a feedback enhanced direct injection (FEDI) circuit. Cost is lowered by using SLS detectors with a higher performance DROIC that can tolerate high leakage current. In addition, the all digital readout will negate the need for expensive, low noise, analog signal processing electronics. Approved for Public Release 15-MDA-8169 (20 March 15)