This paper presents a fully-integrated NEMS resonator together with a compact built-in CMOS interfacing circuitry. The proposed low-power CCII circuit allows measuring the mechanical frequency response of the nanocantilever structure in the MHz range. Detailed experimental results at different DC biasing conditions and pressure levels are presented for a real mixed electro-mechanical system int...

There are very few reports in the past on applications of Evolutionary Strategy (ES) towards the synthesis of analogue circuits. Moreover, even fewer reports are on the synthesis of computational circuits. Last fact is mainly due to the difficulty in designing of the complex nonlinear functions that these circuits perform. In this paper, the evolving power of the ES is challenged to design four...

We propose an analog CMOS circuit for developing a biologically-inspired locomotion controller for a quadruped walking robot. The proposed circuit is based on the biological neural network, called the central pattern generator (CPG), that can generate rhythmic movements for locomotion of animals, such as walking, running, swimming, and flying. We constructed a CPG model from the WilsonCowan neu...

In this paper, design and analysis of a programmable CMOS-based function generator circuit is presented. The proposed circuit implements trapezoidal and triangular functions with all parameters (slope, position, width and height) independently and continuously adjustable. The proposed circuit achieves higher speed compared to the available previous work by not using winner takes all or looser t...

A new automatic tuning circuit based on synchronous rectification scheme is proposed and functions in the idle periods between the burst-mode transmissions. The proposed CMOS tuning circuit can be fully integrated with the front-end filter. Simulation results employing 0.5μm CMOS technology have verified that the center frequency is automatically tuned to 1.25GHz with 10% process variation pres...

This paper describes the design of a bandgap reference, implemented in 0.50 μm CMOS technology. The circuit generates a reference voltage of 1.2218V. It can operate between 20oC & 70o C. Total variation of reference voltage within the temperature range is 2.6mV which is 0.213% of the reference voltage. This circuit works in a current feedback mode, and it generates its own reference current, re...

This paper discusses the use of temperature as a test observable for analogue circuits, presenting a generic configuration for analogue circuit thermal testing. As a case study, static temperature analysis is performed over a two-stage operational amplifier in view of extracting temperature waveforms at different locations on the circuit under test, both under fault-free conditions as well as i...

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The traditional dilemma for performing network simulations with analog circuits is the great difficulty of handling the connectivity in hardware. The main problem is that hardware-based connectivity must be built following predefined plasticity and connectivity rules, and that once the hardware is built, it is usually not possible to change its configuration. We show here an alternative system ...

The very fast growing market of portable equipment is increasing interest in low power integrates circuit. So, designing low power integrated circuits requires reduction of supply voltages and interconnection parasitic to minimum but reduction in supply voltage implies series of problems in circuit design. To overcome these issues, an Ultra low power low voltage two stage class AB CMOS fully di...