Journal ArticleDOI
Circuit techniques for reducing the effects of op-amp imperfections: autozeroing, correlated double sampling, and chopper stabilization
Christian Enz,Gabor C. Temes +1 more
- Vol. 84, Iss: 11, pp 1584-1614
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TLDR
In this paper, some old and new circuit techniques are described for the compensation of the amplifier's most important nonideal effects including the noise (mainly thermal and 1/f noise), the input-referred dc offset voltage as well as the finite gain.Abstract:
In linear IC's fabricated in a low-voltage CMOS technology, the reduction of the dynamic range due to the dc offset and low frequency noise of the amplifiers becomes increasingly significant. Also, the achievable amplifier gain is often quite low in such a technology, since cascoding may not be a practical circuit option due to the resulting reduction of the output signal swing. In this paper, some old and some new circuit techniques are described for the compensation of the amplifier's most important nonideal effects including the noise (mainly thermal and 1/f noise), the input-referred dc offset voltage as well as the finite gain resulting in a nonideal virtual ground at the input.read more
Citations
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Journal ArticleDOI
Empowering Technology Enabled Care Using IoT and Smart Devices: A Review
TL;DR: Some of the past milestones related to wearable subsystems including sensors, power management, signal processing, computing architectures, and communication are surveyed and promising research directions addressing their limitations are discussed.
Journal ArticleDOI
1-billion-color TFT LCD TV with full HD format
TL;DR: The recent results of the 10-bit gray scale TFT-LCD data driver applied to 42-inch diagonal 1-billion-color TFT -LCD TV with full HD format are presented and it is verified that the picture with 10- bit shades of gray is much more natural than that with 8-bit shades ofgray.
Journal ArticleDOI
Micromachined Vibratory Gyroscopes Controlled by a High-Order Bandpass Sigma-Delta Modulator
TL;DR: A control system based on a high-order bandpass Sigma DeltaM is superior as it not only greatly shapes the quantization noise, but also alleviates tonal behavior, as is often seen in low-order SigmaDeltaM control systems, and has good immunities to fabrication tolerances and parameter mismatch.
Proceedings ArticleDOI
Breakthrough in high performance inertial navigation grade Sigma-Delta MEMS accelerometer
TL;DR: In this paper, a Sigma-Delta MEMS navigation grade accelerometer is reported, which is the first reported MEMS accelerometer to reach navigation grade performance. But, the performance of the reported system encompasses a high stability and high shock resistance mechanical MEMS sensor, a 5th order sigma-delta closed-loop electronic with digital loop filtering and high stability voltage reference.
Journal ArticleDOI
A 2.4-GHz BAW-Based Transceiver for Wireless Body Area Networks
TL;DR: A BAW-based transceiver targeting wireless networks for biomedical applications, using high-Q microelectromechanical-systems resonators brings interesting benefits to the fundamental building blocks of the frequency synthesis, receiver, and transmitter and allows achieving at the same time low-power consumption, improved phase noise, and high selectivity in the receiver and transmitter paths.
References
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Book
Principles of Data Conversion System Design
TL;DR: This advanced text and reference covers the design and implementation of integrated circuits for analog-to-digital and digital-toanalog conversion and systematically leads the reader to advanced topics, describing design issues and techniques at both circuit and system level.
Journal ArticleDOI
A 4-MHz CMOS continuous-time filter with on-chip automatic tuning
Francois Krummenacher,N. Joehl +1 more
TL;DR: This paper presents a 3rd order low-pass continuous-time filter with 4 MHz cut-off frequency, integrated in a 3 μm CMOS process, based on the direct simulation of a doubly-terminated LC ladder using capacitors and fully-balanced, current-controlled transconductance amplifiers with extended linear range.
Proceedings Article
A 4-MHz CMOS Continuous-Time Filter with On-Chip Automatic Tuning
Francois Krummenacher,N. Joehl +1 more
TL;DR: In this article, a 3rd order low-pass continuous-time filter with 4 MHz cut-off frequency, integrated in a 3?m CMOS process, is presented, based on direct simulation of a doublyterminated LC ladder using capacitors and fully-balanced, current-controlled transconductance amplifiers with extended linear range.
Journal ArticleDOI
Design techniques for high-speed, high-resolution comparators
Behzad Razavi,Bruce A. Wooley +1 more
TL;DR: In this article, precision techniques for the design of comparators used in high-performance analog-to-digital converters employing parallel conversion stages are described, and circuit designs achieving 12-b resolution in both BiCMOS and CMOS 5-V technologies are presented.
MonographDOI
Switched-currents : an analogue technique for digital technology
TL;DR: This book discusses the evolution of Analogue Sampled-Data Signal Processing, the architecture of Switched-Current Circuits, and the non-linear Behaviour of Switches-Current Memory Circuits.