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Pattern recognition is a widespread application of the Wavelet Transform (WT). Sometimes, in real-time implementations a delay as low as possible is desired in the pattern detection process. This is especially important in applications such as breath or electrocardiogram (ECG) monitoring for life-support. Nevertheless, any real-time WT system which is actually implemented can present different sources...
This article presents a strategy for implementing a differential amplifier that allows a high degree of linearity in the output currents with tunable gain. For this purpose, multiple-input floating-gate transistors are used, along with a technique for increasing the transconductance by means of a sum of currents. Simulation results are presented for a 0.35-μm technology. The differential amplifier...
This paper presents a technique for improving the response of amplifier implemented with multiple inputs floating gate transistor for processing input signals of very small amplitude. With the technique presented here, it is possible to improve the transconductance of the amplifier, maintaining all the positive features of the device as variable threshold voltage and very-low voltages applications...
The design and validation of an architecture of a CMOS mixed-signal correlator in VLSI technology based on the Multiple-Input Floating Gate MOS Transistor is introduced. The key element of this architecture is a single transistor with 513 inputs. The system includes one pair of configurable shift registers, a comparator stage with hysteresis and an output stage. The correlator is designed for processing...
This is an analysis of a common source CMOS transconductor based on a Multiple-input Floating Gate MOS transistor with feedback configuration. This analysis allows to visualize the specific way to find the operating point of the amplifier, when it is used as a transconductor. In this work, both theoretical and experimental results are presented. Here, the problem of improving the theoretical data...
The extraction of the floating gate voltage on the Multiple-Input Floating-Gate Transistor is discussed in order to understand their behavior in a better way. The lack of linearity at very low voltage is discussed. The presence of a residual charge on the floating gate is experimentally shown despite the use of metal contact to discharge it. This analysis is useful to enhance the mathematical model...
The Floating Gate MOS Transistor with Multiple Inputs is a device that offers some advantages with regard to the conventional MOS transistor. However, even today, there is a lack of formal and detailed analysis about the analog model in the literature. An accurate model of this device is very important for designing high performance analog cells. In this document a strategy for modeling the floating...
A modification of the standard cell methodology to obtain area reduction in synthesized digital system layouts is presented. The proposed modifications consist in the full-custom redesign of the standard cell library and the application of a compaction algorithm in the step of cell placement. The effectiveness of the methodology has been shown compacting the cores of four digital systems. In the test...
A MATLAB method is introduced for biasing CMOS analog cells operating in weak inversion region and based on the Multiple-Input Floating Gate MOS Transistor. Despite SPICE language is a widely accepted tool to design CMOS analog cells, it has some problems to simulate circuits based on the Multiple-Input Floating Gate Transistor since floating nodes appear giving rise to problems of convergence and...
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