A 400 mu W Hz-Range Lock-In A/D Frontend Channel for Infrared Spectroscopic Gas Recognition
نویسندگان
چکیده
This paper presents a low-power and fully integrated frontend channel for long-wave infrared spectroscopic gas recognition. The proposed channel circuitry includes: input sensor biasing, sub-Hz high-pass filtering and pre-amplification, differential blind cancellation, and lock-in A/D conversion. The proposed CMOS circuits make extensive use of transistor subthreshold operation and digital programmability. Experimental results are presented for a 0.3mm 400μW channel prototype integrated in 0.35μm CMOS technology.
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ورودعنوان ژورنال:
- IEEE Trans. on Circuits and Systems
دوره 58-I شماره
صفحات -
تاریخ انتشار 2011