TY - JOUR
AU - Gao, Lei
AB - The implementation of an effective readout integrated circuit for 320 x 256 middle-and long-wave infrared focal planearrays (MLIR FPAs) imaging system is detailed in this paper. The key purpose of this design is transferring the signalsfrom dual-color detectors sequentially with effectiveness including lower noise, less voltage loss, lower powerconsumption, higher linearity, higher speed etc. A double sharing capacitor (DSC) structure is adopted as a solution tohow to make a trade-off between the areas of capacitors and the main MOSFETs structures. Compared to the traditionalcharge transferring, a zero-charge-loss mechanism is applied in this circuit to guarantee a high voltage transferringefficiency. A three-stage cascaded unit gain amplifiers is used to get a high drive capability and good linearity.Meanwhile, a simple but effective power management is introduced to the section of arrays and the first output stage toensure acceptable power consumption. Moreover, a testing line with adjustable current source is added aside to fulfill theeffective testability. Now, the chip has been fabricated with the 0.35um 2P4M mixed signal technology and finishedbasic testing process. According to the testing results, the whole chip presents a sensitive response to illumination andthe output voltage steps are clearly legible at 2.5MHz data transmission rate. As it is expected, this structure achieves100f/s frame frequency and less than 1% nonlinearity under 5V power supply. However, the output swing reduced to 2Vat room temperature of which the reason should be researched further. The total power consumption reaches 170mW.
TI - Realization of an effective ROIC for dual-color FPAs imaging system
JF - Proceedings of SPIE
DO - 10.1117/12.2067885
DA - 2014-11-20
UR - https://www.deepdyve.com/lp/spie/realization-of-an-effective-roic-for-dual-color-fpas-imaging-system-mTPB2JEMoi
SP - 93002G
EP - 93002G-7
VL - 9300
IS - 
DP - DeepDyve
ER -