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Design of Current-Type Readout Integrated Circuit for 160 × 120 Pixel Array Applications
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 Title & Authors
Design of Current-Type Readout Integrated Circuit for 160 × 120 Pixel Array Applications
Jung, Eun-Sik; Bae, Young-Seok; Sung, Man-Young;
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We propose a Readout Integrated Circuit (ROIC), which applies a fixed current bias sensing method to the input stage in order to simplify the circuit structure and the infrared sensor characteristic control. For the sample-and-hold stage to display and control a signal detected by the infrared sensor using a two-dimensional (2D) focal plane array, a differential delta sampling (DDS) circuit is proposed, which effectively removes the FPN. In addition, the output characteristic is improved to have wider bandwidth and higher gain by applying a two-stage variable gain amplifier (VGA). The output characteristic of the proposed device was 23.91 mV/, and the linearity error rate was less than 0.22%. After checking the performance of the ROIC using HSPICE simulation, the chip was manufactured and measured using the SMIC 0.35 um standard CMOS process to confirm that the simulation results from the actual design are in good agreement with the measurement results.
Readout IC;Microbolometer;Infrared ray;Image sensor;
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화소 전류 보상 기법을 이용한 볼로미터 형의 비냉각형 적외선 이미지 센서,김상환;최병수;이지민;오창우;신장규;박재현;이경일;

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