Large Format Dual Band FPA ROIC for Low Flux Environments

Based on our analysis, we believe the biggest technology difficulty will be the pixel layout real estate constraint created by the 20um pixel pitch against the various specification requirements like two color, low flux operation, low noise, high dynamic range, variable gain, integrate while read, etc. To solve this problem, we believe our proposed Amplifier Shared Dual Band CTIA (ASDBC) pixel or the modified Amplifier Shared Dual Band CTIA with Sourced Follower Output (ASDBCSF) pixel should be the appropriate approach to meet the requirements. The multiple-pixel-in-one-unit layout technique should be a good backup when further performance sacrifices for layout tradeoffs are unacceptable. SBIR preferred features, like dark current subtraction, independent column gain control, ADC on-chip, and various operation modes, can all be incorporated into the ASDBC or ASDBC-SFO based ROIC by leveraging our past design experience.