This paper presents novel low-voltage all-MOS analog circuit techniques for the synthesis of oversampling Σ∆ A/D converters. The new approach exploits the possibilities of Log-domain processing by using the MOSFET in subthreshold operation. Based on this strategy, a complete set of very low-voltage (down to 1V) low-power (below 100μW) all-MOS basic building blocks is proposed. The resulting ana...

The continued down scaling of submicron CMOS technology forces innovation of practical and economical circuits that will tolerate reduced headroom (reduced power supply voltage) due to lowering of the technology’s maximum allowable voltage. Given the relatively large threshold voltages with respect to the shrinking headroom, a group of widely used analog signal processing building blocks that a...

Low voltage (LV) analog circuit design techniques are addressed in this tutorial. In particular, (i) technology considerations; (ii) transistor model capable to provide performance and power tradeoffs; (iii) low voltage implementation techniques capable to reduce the power supply requirements, such as bulk-driven, floating-gate, and self-cascode MOSFETs; (iv) basic LV building blocks; (v) multi...

Discrete Pulse Width Modulated controller for buck converter is described. The key building blocks are Analog to Digital converter, compensator, and digital pulse width modulator is introduced to meet the requirement of perfect output voltage regulation, high-speed dynamic response, and programmability. The discrete controller method bypasses errors related to the conversion from the continuous...

This paper presents selected design and operation details of a custom integrated neural chip. This neural processing chip is designed in the recent 0.18 μm, single poly, six-layer Copper Interconnect Technology. The chip realizes an architecture that achieves the task of autonomous-learning execution times in micro to milli seconds. The core consists of basic building blocks of 4-quadrant multi...

This paper presents a low voltage low power RF/analog front-end circuit for passive ultra high frequency (UHF) radio frequency identification (RFID) tag. Temperature compensation is achieved by a reference generator using sub-threshold techniques which requires lower supply voltage than conventional bandgap circuit. Some novel structures are developed to construct the building blocks, including...

This paper proposes a methodology for automatic synthesis of analog basic building blocks. The methodology is based on the minimization of a cost function composed by the variables of an analog block (transistor lengths and widths). The implementation was made in Matlab, with a generic non-linear optimization function and an external electrical simulator for the evaluation of circuit specificat...

Analog VLSI neuromorphic computation has become an active eld of research [Mead, 1990] [Andreou et al., 1991] [Cohen and Andreou, 1992] in the last few years. Indeed, arti cial neural systems inspired by biological neural networks are becoming an increasingly popular topic among analog VLSI designers. Biological neural systems for sensory perception and motor control are both compact and energy...

The rapidly growing electronic networking of our society has created the need for a high-speed and low-power data communications infrastructure. Both voice and data communications have been made available for the mobile user. Additionally, more complex coding schemes and decoding algorithms have been introduced to protect the user data from corruption during the transmission over a communicatio...