Recently analog circuit designers are interested in structured optimization techniques to automate the process of CMOS circuit design. Geometric programming, which makes use of monomial and posynomial expressions to model MOSFET parameters, represents one such approach. The extent of accuracy in finding a global optimal solution using this approach depends on the formulation of circuit and devi...

The tremendous growth in wireless LANs has generated interest in technologies that provide higher data rates and greater system capacities. The IEEE 802.11a standard [1], based on coded OFDM modulation [2], provides nearly five times the data rate and at least 20 times the overall system capacity compared to the incumbent 802.11b wireless LAN systems [3]. This article describes the design chall...

This paper presents a Maximum Power Point Tracking (MPPT) circuit in CMOS technology for integration into an energy harvesting solution, comprising a solid-state thinfilm lithium battery fabricated in the back-side of a plastic solar-cell. The MPPT CMOS circuit is required in the energy transfer process from the solar cell to the battery. The MPPT circuit was designed in the 0.7 μm CMOS process...

In this paper, two new analog CMOS comparators (Type-I and Type-II) with low-voltage and wide-input capabilities are proposed. The comparator receives two analog inputs and puts out one digital state to identify the larger (or the smaller) of the input variables, which represents an useful operation in data conversion and sensory signal processing. Without using special fabrication technologies...

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...

Negative Bias Temperature Instability(NBTI) has become an important reliability concern for ultra-scaled Silicon IC technology with significant implications for both analog and digital circuit design. As the Integrated Circuits (IC) density keeps on increasing with the scaling of CMOS devices in each successive technology generation, stress analysis or reliability concerns mainly Negative Bias ...

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...

Field Programmable Mixed-Signal Arrays (FPAA) designs are reviewed and standard building blocks described with respect to circuit parameters and design limitations. The second-generation current conveyor is introduced as an analog building block with properties similar to those of an operational amplifier, and which has the potential for high frequency operation. A current conveyor can be imple...