| 摘要 |
Disclosed is a High Dynamic Range Dual Mode (HDR-DM) input circuit unit cell (10) for use with an infrared (IR) radiation detector (D1). The readout circuit unit cell includes a plurality of transistors (M1, M2, M3 and M4), switches (S1, S2 and S3), and capacitances (Cfb, Cbl and CSH) that are controllably coupled together to form, in a first mode of operation below an illumination level threshold, a CTIA input circuit (12), and to form, in a second mode of operation above the illumination level threshold, a lower gain SFD input circuit (14).
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