A floating gate charge-sharing circuit that can be electrically programmed for precise positive and negative voltage changes, and can be implemented in a standard CMOS VLSI process is presented. With the advantage of its longterm charge-retention, the floating gate charge-sharing circuit is suitable for providing a compact, non-volatile and high-precision analog trimming method to trim the offs...

We describe the first single microphone sound localization system and its inspiration from theories of human monaural sound localization. Reflections and diffractions caused by the external ear (pinna) allow humans to estimate sound source elevations using only one ear. Our single microphone localization model relies on a specially shaped reflecting structure that serves the role of the pinna. ...

A CMOS analog to digital converter based on the folding and interpolating technique is presented. This technique is successfully applied in bipolar A/D converters and now also becomes available in CMOS technology. The analog bandwidth of the A/D converter is increased by using a transresistance amplifier at the outputs of the folding amplifiers and, due to careful circuit design, the comparator...

FPGA can solve the lack of custom circuit, and overcome the original programmable gate device limited number of faults. The paper presents application of FPGA in high-speed CMOS digital image acquisition and color recognition system. Color recognition system is mainly composed of analog and digital two parts. The analog part mainly used photoelectric signal conversion, amplification and filteri...

Analog circuit design is a challenging activity because the analog design procedure targets complex design specifications that are closely related to transistor sizing and device technology dependent. This paper addresses the design of CMOS Miller Operational Transconductance Amplifier (OTA) using a design methodology based on the gm/ID characteristic with some new features, including to the de...

Modeling and Simulation Aided Verification of Analog/Mixed-Signal Circuits Scott Little and Chris Myers University of Utah, Salt Lake City, UT 84112, USA {little,myers}@vlsigroup.ece.utah.edu Abstract. Analog/Mixed-signal (AMS) circuit verification is a growing problem as process variation increases and AMS circuits become more functionally complex. To improve analog verification flows, AMS cir...

The hyperbolic tangent function and its derivative are key essential element in analog signal processing and especially in analog VLSI implementation of neuron of artificial neural networks. The main conditions of these types of circuits are the small silicon area, and the low power consumption. The objective of this paper is to study and design CMOS VLSI hyperbolic tangent function and its der...

Ultrasonic receiver circuit with Phase-locked loop 4046 Ultrasonic amplifier with high amplification factor · Transformer-coupled ultrasonic transmitter circuit. General-Purpose CMOS Rail-to-Rail Amplifier. ADP7104. 20 V, 500 mA, Low The circuit shown in Figure 1 is a completely self-contained distance sensor that utilizes an ultrasonic transmitter and sensitive analog receiver in conjunction.

The design of analog and radio-frequency (RF) circuits in CMOS technology becomes increasingly more difficult as device modeling faces new challenges in deep submicrometer processes and emerging circuit applications. The sophisticated set of characteristics used to represent today’s “digital” technologies often proves inadequate for analog and RF design, mandating many additional measurements a...