A 160×120 ROIC with Non-uniformity Calibration for Silicon Diode Uncooled IRFPA

Abstract

This paper presents a ROIC (Readout Integrated Circuit) with NUC (Non-uniformity Calibration), which is applied in a silicon diode uncooled IRFPA (Infrared Focal Plane Array). We propose blind pixel to calibrate chip temperature non-uniformity and DAC-based calibration for calibrating process non-uniformity. The ROIC is fabricated using a $0.35\mu \mathrm{m}$ CMOS process with array size of $160\times 120$. Power consumption of the ROIC is 41mW, noise of the DAC is less than 2$\mu$V, and the circuit’s SNR (Signal-to-Noise Ratio) is 72dB.