PITA Fiscal Year 2010 Projects - Product and Process Design and Optimization

Capacitive Transimpedance Amplifiers

Principal Investigators: Tamal Mukherjee, Paul A. Salvador

This proposal is to design a low noise amplifier for use in thermal imaging. As imager pixel count increases to enable high resolution systems, the underlying pixel must shrink to attain market form factor and cost targets. Herein lays the challenge in low-noise, low-power amplifier design. The major effort for this project is to develop a 625 μm2 pixel architecture that utilizes state-of-the-art low-noise processes to minimize transistor noise. The project goal is to design a circuit whose noise is significantly lower than the intrinsic detector noise. The design and development of such a pixel amplification circuit would be an enabling technology for all active pixel sensors that utilize capacitive readout techniques.