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This paper presents a new family of Class-AB operational amplifier (OpAmp) circuits based on single-stage topologies with nonlinear current amplifiers. The proposed OpAmp architecture is mainly characterized by generating all Class-AB current in the output transistors only, exhibiting very low technology sensitivity and avoiding the need of any internal frequency compensation mechanism. Hence, this...
This paper proposes a complete and freeware EDA framework for teaching mixed-mode full-custom VLSI design. The presented set of EDA tools and associated physical design kit allows students to gain hands-on experience on ASIC design tasks covering schematic entry, both at system and circuit levels, HDL system simulation and block specification, automatic circuit optimization, PCell-based layout, DRC,...
The design and high-level modeling of a multi-channel integrated circuit for infrared gas recognition suitable for low-power consumption are presented. The thermal compensation and independent programmability methods are used in all the main channel stages: sensor biasing, high-pass filtering and pre-amplification, blind cancellation, lock-in demodulation and A/D conversion. CMOS transistor subthreshold...
This paper presents a low-power and fully-integrable multichannel digital read-out integrated circuit for infrared spectroscopic gas recognition. The proposed channel circuitry includes: sensor biasing, sub-Hz high-pass filtering and pre-amplification, blind cancellation, lock-in demodulation, and A/D conversion, all together with independent programmability and thermal compensation. The proposed...
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