The architecture and required building blocks of CMOS fuzzy chips capable of performing as adaptive fuzzy controllers are described in this paper. The building blocks are designed with mixed-signal current-mode cells that contain low-resolution A/D and D/A converters based on current mirrors. These cells provide the chip with analog or digital programmability and long-term local storage. They a...

High Performance RF and Baseband Building Blocks for Wireless Receivers. (May 2006) Faramarz Bahmani, M.S., Tehran University Chair of Advisory Committee: Dr. Edgar Sánchez-Sinencio Because of the unique architecture of wireless receivers, a designer must understand both the high frequency aspects as well as the low-frequency analog considerations for different building blocks of the receiver. ...

In this paper we review the genesis of charge pump circuits, their evolution and improvement in design and their importance in nonvolatile memory circuits, low-voltage analog building blocks and other applications.

In this paper a voltage mode four quadrant analog multiplier (FQAM) using voltage differencing buffered amplifier (VDBA) based on quarter square algebraic identity is presented. In the proposed FQAM the passive resistor can be implemented using MOSFETs operating in saturationregion thereby making it suitable for integration. The effect of non idealities of VDBA has also been analyzed in this pa...

We extend a class of analog CMOS circuits that can be used to perform many analog computational tasks. The circuits utilize MOSFET’s in their subthreshold region as well as capacitors and switches to produce the computations. We show a few basic currentmode building blocks that perform squaring, square root, and multiplication/division which should be sufficient to gain understanding of how to ...

Up to the present, several attempts have been made to increase the conversion rate by minimizing the oversampling ratio, but another important aspect has been somehow overlooked, i.e., the maximization of the sampling frequency. In this design both aspects are instead considered. Since the specifications of the analog building blocks are determined by the selected architecture, the choice of an...

Absmoel-This paper describes our current efforts towards creating cooperative analogtdigital signal processing (CADSP) systems for auditory sensor and signal processing applications. We address resolution issues that affect the choice of signal processing algorithms arriving from an analog sensor. We discuss current analog circuit approaches towards the frout-end signal processing by reviewing ...

Analog-to-digital converters are essential building blocks in modern electronic systems. They form the critical link between front-end analog transducers and back-end digital computers that can efficiently implement a wide variety of signal-processing functions. The wide variety of digitalsignal-processing applications leads to the availability of a wide variety of analog-to-digital (A/D) conve...

The trade-offs between bandwidth, resolution and power in high dynamic range pipeline analog-to-digital converters are studied when a pure digital CMOS technology is considered. Calibration techniques are presented to achieve the required resolution, and the design optimization methodology of the relevant pipeline building blocks are discussed. An example of a 15-b 10Ms/s analog-to-digital pipe...