技术领域

Analog Circuits

169 篇相关论文 (2008–2026)

ISSCC 2015 Session 5 Analog Circuits
A 0.13µm Fully Digital Low-Dropout Regulator with Adaptive Control and Reduced Dynamic Stability for Ultra-Wide Dynamic Range
Saad Bin Nasir, Samantak Gangopadhyay, Arijit Raychowdhury
An increasing number of power domains and of power states per domain, as well as decreasing decoupling capacitance per local grid and ultra-wide current dynamic range of digital load circuits (for low power on one end wh
Georgia Institute of Technology, Atlanta, GA
ISSCC 2015 Session 5 Analog Circuits
A Forward-Body-Bias Tuned 450MHz Gm-C 3rd-Order Low-Pass Filter in 28nm UTBB FD-SOI with >1dBVp IIP3 over a 0.7-to-1V Supply
Joeri Lechevallier1,2, Remko Struiksma1, Hani Sherry2, Andreia Cathelin2,
inverter-based Gm-C filters [1,2] allow achieving bandwidths beyond what is possible with opamp-RC techniques. The class-AB behavior of the inverter, together with the high transconductance for a given quiescent current,
Eric Klumperink1, Bram Nauta1 University of Twente, Enschede, The Neth
ISSCC 2015 Session 5 Analog Circuits
A 32nW Bandgap Reference Voltage Operational from 0.5V Supply for Ultra-Low Power Systems
Aatmesh Shrivastava, Kyle Craig, Nathan E. Roberts,
David D. Wentzloff, Benton H. Calhoun PsiKick, Charlottesville, VA Most systems require a voltage reference independent of variation of power supply, process, or temperature, and a bandgap voltage reference (BGR) often s
ISSCC 2015 Session 5 Analog Circuits
A 2-Channel -83.2dB Crosstalk 0.061mm2 CCIA with an Orthogonal Frequency Chopping Technique
Yi-Lin Tsai, Feng-Wen Lee, Tzu-Ying Chen, Tsung-Hsien Lin
Area-efficient low-noise instrumentation amplifiers (IAs) are required in various multi-channel sensing and monitoring applications. These IAs must be designed to achieve low noise and low power, good noise efficiency fa
National Taiwan University, Taipei, Taiwan
ISSCC 2015 Session 5 Analog Circuits
A 110dB SNR ADC with ±30V Input Common-Mode Range and 8µV Offset for Current Sensing Applications
Long Xu1, Burak Gönen1, Qinwen Fan2, Johan H. Huijsing1, Kofi A. A. Makinwa1
input common-mode voltage range (CMVR) while powered from a single 5V supply. This beyond-the-rails capability is obtained by employing a capacitively coupled high-voltage (HV) chopper at the input of a switched-capacito
Delft University of Technology, Delft, The Netherlands, Maxim Integrat
ISSCC 2015 Session 5 Analog Circuits
A 4.7MHz 53µW Fully Differential CMOS Reference Clock Oscillator with –22dB Worst-Case PSNR for Miniaturized SoCs
Junghyup Lee1, Pyoungwon Park1, SeongHwan Cho2, Minkyu Je3
KAIST, Daejeon, Korea, 3 Daegu Gyeongbuk Institute of Science and Technology, Daegu, Korea 1 2 Low-power CMOS reference clock oscillators have been widely used in miniaturized SoCs for emerging microsystems such as impla
Institute of Microelectronics, Singapore, Singapore,
ISSCC 2015 Session 5 Analog Circuits
A 60V Auto-zero and Chopper Operational Amplifier with 800kHz Interleaved Clocks and Input Bias-Current Trimming Yoshinori Kusuda
Analog Devices, San Jose, CA, Precision operational amplifiers (opamp) with 30V supply operation have been
widely used to support industrial, instrumentation, and other applications [1]. Most of them have been realized with BJT or JFET processes [1] to offer voltage noise PSD better than 10nV/√Hz and offset voltage drift bett
ISSCC 2014 Session 17 Analog Circuits
A 0.6V 70MHz 4th-Order Continuous-Time Butterworth
Filter with 55.8dB SNR, 60dB THD at +2.8dBm Output, Signal Power
Jayanth N. Kuppambatti, Baradwaj Vigraham, Peter R. Kinget Columbia University, New York, NY Technology scaling is leading to supply voltage reduction and shrinking voltage headroom, making it very challenging for analog
ISSCC 2014 Session 17 Analog Circuits
A 190nW 33kHz RC Oscillator with ±0.21% Temperature Stability and 4ppm Long-Term Stability
Danielle Griffith1, Per Torstein Røine2, James Murdock1, Ryan Smith1
In wireless networks with a low duty cycle, the radio is operational for only a small percentage of the time. A sleep timer is used to synchronize the data transmission and reception. The total system power is then limit
Texas Instruments, Dallas, TX, 2Texas Instruments, Oslo, Norway
ISSCC 2014 Session 17 Analog Circuits
A 1.89nW/0.15V Self-Charged XO for Real-Time Clock Generation Keng-Jan Hsiao
MediaTek, Hsinchu, Taiwan, A 32.768kHz crystal (XTAL) with its oscillation circuit is widely adopted for the
generation of the real-time keeping and system-standby clock. Both functions are universally demanded by various systems such as cellular phones, smart wearable devices, GPS, etc. High frequency stability against environ
ISSCC 2014 Session 17 Analog Circuits
Envelope Modulator for Multimode Transmitters with AC-Coupled Multilevel Regulators
Patrik Arnò1, Matthieu Thomas2,3, Vladimír Molata2,3, Tomáš Jeřábek2
STMicroelectronics, Prague, Czech Republic, 3 Czech Technical University, Prague, Czech Republic 1 2 Modern wireless communication systems, such as high-speed uplink packet access (HSUPA) or long term evolution (LTE), em
STMicroelectronics, Grenoble, France,
ISSCC 2014 Session 17 Analog Circuits
A 0.07mm2 2-Channel Instrumentation Amplifier with 0.1% Gain Matching in 0.16μm CMOS
Fabio Sebastiano1,2, Federico Butti3, Robert van Veldhoven1, Paolo Bruschi3
are required for cost-constrained automotive applications. Instrumentation amplifiers (IA) for such front-ends must process multi-channel sensor outputs and provide gain matching over the channels for proper sensor opera
NXP Semiconductors, Eindhoven, The Netherlands, Delft University of Te
ISSCC 2014 Session 17 Analog Circuits
CMOS Impedance Analyzer for Nanosamples Investigation Operating up to 150MHz with Sub-aF Resolution
Giorgio Ferrari, Davide Bianchi, Angelo Rottigni, Marco Sampietro
Impedance analyzers find an important role in nanoscience and in biological research as a tool to access electrical and physical parameters of the matter as well as to enhance the read-out performance in sensor applicati
Politecnico di Milano, Milan, Italy
ISSCC 2014 Session 17 Analog Circuits
A 0.9V 6.3μW Multistage Amplifier Driving 500pF Capacitive Load with 1.34MHz GBW
Wanyuan Qu1, Jong-Pil Im2, Hyun-Sik Kim1, Gyu-Hyeong Cho1, 1
of driving a large capacitive load with wide bandwidth are becoming more important for various applications. The conventional frequency compensation methods, however, are based on cumbersome transfer function derivations
KAIST, Daejeon, Korea, 2ETRI, Daejeon, Korea As process scales down, l
ISSCC 2014 Session 17 Analog Circuits
A 0.0013mm2 3.6μW Nested-Current-Mirror SingleStage Amplifier Driving 0.15-to-15nF Capacitive Loads with >62° Phase Margin
Zushu Yan1, Pui-In Mak1,2, Man-Kay Law1,2,
Italy 1 2 For active-matrix LCDs [1] that have thousands of buffer amplifiers integrated in its column-driver ICs, ultra-low power and area circuit solutions are continuously urged to meet the market pressure on cost, im
Rui Martins1,2,3, Franco Maloberti4 University of Macau, Macao, China,
ISSCC 2014 Session 17 Analog Circuits
A 0.65ns-Response-Time 3.01ps FOM Fully-Integrated Low-Dropout Regulator with Full-Spectrum Power-SupplyRejection for Wideband Communication Systems
Yan Lu, Wing-Hung Ki, C. Patrick Yue
High performance low-dropout regulators (LDOs) are indispensable in a systemon-a-chip (SoC) due to their low output noise, fast transient response and good power supply rejection (PSR) characteristics. In general, differ
Hong Kong University of Science and Technology, Hong Kong, China
ISSCC 2014 Session 17 Analog Circuits
V-Input-Voltage 0.6V-Output-Voltage 30ppm/°C Low-Dropout Regulator with Embedded Voltage Reference for Low-Power Biomedical Systems
Wei-Chung Chen, Yi-Ping Su, Yu-Huei Lee,
6V to biomedical systems requires a low dropout (LDO) regulator with a maximum driving current capability of 10mA. One sub-1V voltage reference circuit is commonly used in the conventional LDO design to generate the refe
Chin-Long Wey, Ke-Horng Chen National Chiao Tung University, Hsinchu,
ISSCC 2014 Session 17 Analog Circuits
An Integrated 80V 45W Class-D Power Amplifier with Optimal-Efficiency-Tracking Switching Frequency Regulation
Haifeng Ma, Ronan van der Zee, Bram Nauta
Piezoelectric actuators are widely used in smart materials for vibration and noise control, precision actuators, etc. [1]. These actuators are largely capacitive and the reactive power applied on them can go to several t
University of Twente, Enschede, The Netherlands
ISSCC 2013 Session 10 Analog Circuits
A 0.45V 423nW 3.2MHz Multiplying DLL with Leakage-Based Oscillator for Ultra-Low-Power Sensor Platforms
Dong-Woo Jee1, Dennis Sylvester2, David Blaauw2, Jae-Yoon Sim1
University of Michigan, Ann Arbor, MI 1 2 Emerging demands on ultra-low-power wireless sensor platform have presented challenges for nano-watt design of various circuit components. Clock management unit, as an essential
Pohang University of Science and Technology, Pohang, Korea,
ISSCC 2013 Session 10 Analog Circuits
A 120nW 18.5kHz RC Oscillator with Comparator Offset Cancellation for ±0.25% Temperature Stability
Arun Paidimarri1, Danielle Griffith2, Alice Wang3,
Anantha P. Chandrakasan1, Gangadhar Burra2 Massachusetts Institute of Technology, Cambridge, MA, Texas Instruments, Dallas, TX, 3MediaTek, Austin, TX 1 2 Integrated low-frequency oscillators can replace crystal oscillato
ISSCC 2013 Session 10 Analog Circuits
A 62mW Stereo Class-G Headphone Driver with 108dB Dynamic Range and 600μA/Channel Quiescent Current
Jianlong Chen1, Sasi Kumar Arunachalam1, Todd L. Brooks1,
A differential to singleended block (D2S) converts the output voltage of the Gm-C loop filter into an appropriate single-ended signal at the input of the class-AB and class-B amplifiers. The architecture suppresses error
Iuri Mehr1, Felix Cheung1, Hariprasath Venkatram2 Broadcom, Irvine, CA
ISSCC 2013 Session 10 Analog Circuits
A 4Ω 2.3W Class-D Audio Amplifier with Embedded
DC-DC Boost Converter, Current-Sensing ADC and, DSP for Adaptive Speaker Protection
higher audio output power. This can be achieved by lowering the speaker impedance or increasing the voltage swing at the amplifier output by boosting the supply voltage [1-4]. Typical speakers in portable devices are qui
Marco Berkhout, Lutsen Dooper, Benno Krabbenborg, John Somberg NXP Sem
ISSCC 2013 Session 10 Analog Circuits
A 0.06mm2 14nV/√Hz Chopper Instrumentation Amplifier with Automatic Differential-Pair Matching
Ippei Akita1, Makoto Ishida1,2
Electronics-Inspired Interdisciplinary Research Institute (EIIRIS), Toyohashi, Japan 1 2 A small-area low-power low-noise instrumentation amplifier (IA) is desired in arrayed sensor devices that are used for high-spatial
Toyohashi University of Technology, Toyohashi, Japan,
ISSCC 2013 Session 10 Analog Circuits
A Multi-Path Chopper-Stabilized Capacitively Coupled Operational Amplifier with 20V-InputCommon-Mode Range and 3μV Offset
Qinwen Fan, Johan Huijsing, Kofi A.A. Makinwa
Capacitively coupled chopper amplifiers are capable of handling common-mode voltages outside their supply rails, while also achieving high power efficiency and low offset [1-3]. However, a significant drawback of such am
Delft University of Technology, Delft, The Netherlands
ISSCC 2013 Session 10 Analog Circuits
A 2mW 800MS/s 7th-Order Discrete-Time IIR Filter with 400kHz-to-30MHz BW and 100dB Stop-Band Rejection in 65nm CMOS
Massoud Tohidian, Iman Madadi, Robert Bogdan Staszewski
Filters are key building blocks in wireless communication and analog signal processing. Typically, Gm-C and active-RC topologies are being used for this purpose. However, reduced supply voltage and lower transistor outpu
Delft University of Technology, Delft, The Netherlands
ISSCC 2013 Session 10 Analog Circuits
A 0.1-to-1.2GHz Tunable 6th-Order N-Path ChannelSelect Filter with 0.6dB Passband Ripple and +7dBm Blocker Tolerance
Milad Darvishi, Ronan van der Zee, Bram Nauta
Radio receivers should be robust to large out-of-band blockers with small degradation in their sensitivity. N-path mixers can be used as mixer-first receivers [1] with good linearity and RF filtering [2]. However, 1/f no
University of Twente, Enschede, The Netherlands
ISSCC 2012 Session 21 Analog Circuits
A Capacitively Coupled Chopper Instrumentation
Amplifier with a ±30V Common-Mode Range, 160dB, CMRR and 5µV Offset
(CCIA) for current-sensing applications. A capacitively driven input chopper enables a ±30V input common-mode (CM) range and an input offset less than 5µV. The CCIA does not draw supply current from its input terminals o
Qinwen Fan, Johan Huijsing, Kofi Makinwa Delft University of Technolog
ISSCC 2012 Session 21 Analog Circuits
On-Chip Gain Reconfigurable 1.2V 24µW Chopping Instrumentation Amplifier with Automatic Resistor Matching in 0.13µm CMOS
Fridolin Michel, Michiel Steyaert
Motivated by low-voltage, low-power and small-size requirements of biomedical and energy scavenging circuits, this work introduces a fully integrated instrumentation amplifier (IA) running at 1.2V with a power consumptio
KU Leuven, Leuven, Belgium
ISSCC 2012 Session 21 Analog Circuits
A 90Vpp 720MHz GBW Linear Power Amplifier for Ultrasound Imaging Transmitters in BCD6-SOI
Dario Bianchi1, Fabio Quaglia2, Andrea Mazzanti1, Francesco Svelto1
Transducer drivers for ultrasound imaging are required to have high output power and operation frequency into the MHz range. Furthermore, in harmonic imaging, a well-established method resulting in enhanced contrast, hig
University of Pavia, Pavia, Italy, 2STMicroelectronics, Cornaredo, Ita
ISSCC 2012 Session 21 Analog Circuits
A 0.016mm2 144µW Three-Stage Amplifier Capable of Driving 1-to-15nF Capacitive Load with >0.95MHz GBW
Zushu Yan1, Pui-In Mak1, Man-Kay Law1, Rui Martins1,2
Instituto Superior Tecnico, Lisbon, Portugal 1 2 High-color-depth LCD drivers require nF-range capacitors as the charge reservoirs to handle the glitch energy during the conversion of the DAC [1]. The reference buffers b
University of Macau, Macau, China
ISSCC 2012 Session 21 Analog Circuits
A 5.58nW 32.768kHz DLL-Assisted XO for Real-Time Clocks in Wireless Sensing Applications
Dongmin Yoon, Dennis Sylvester, David Blaauw
There is a growing interest in ultra-low-power wireless microsystems [1]. Synchronization between different nodes in a wireless sensor network plays an important role in the overall node energy budget due to the high pow
University of Michigan, Ann Arbor, MI
ISSCC 2012 Session 21 Analog Circuits
A 0.0025mm2 Bandgap Voltage Reference for 1.1V Supply in Standard 0.16µm CMOS Tmin= -100°C and results in VREF ≅ 900mV. In our design we did some extra optimization in the length ratios and width ratios of the transistors to get maximum curvature correction. The designed circuit occupies 50×50µm2 in a standard 0.16µm bulk CMOS technology. Measurements are done on a Süss Microtec PM200 wafer prober with cooling, using a Keithley 4200 analyzer.
Anne-Johan Annema1, George Goksun2
Anagear, Rosmalen, The Netherlands 1 2 Todays ICs usually employ one bandgap voltage reference (BGVR) circuit to generate a well defined voltage that is reused at many places in that IC. The classical BGVR generates a re
University of Twente, Enschede, The Netherlands
ISSCC 2012 Session 21 Analog Circuits
A 65nm CMOS 1-to-10GHz Tunable ContinuousTime Low-pass Filter for High-Data-Rate Communications
Fawzi Houfaf1,2,3, Mathieu Egot1, Andreas Kaiser2, Andreia Cathelin1, Bram Nauta3
filters are in the frequency band of 1 to 3GHz [2,4-6], targeting applications like UWB communications or hard disk drives. Nevertheless, bands much higher, of about 10GHz, are to be addressed in the near future. This pa
STMicroelectronics, Crolles, France IEMN / ISEN, Lille, France 3 Unive
ISSCC 2012 Session 21 Analog Circuits
A 0.55V 61dB-SNR 67dB-SFDR 7MHz 4th-Order Butterworth Filter Using Ring-Oscillator-Based Integrators in 90nm CMOS
Brian Drost1,2, Mrunmay Talegaonkar2, Pavan Kumar Hanumolu2
Oregon State University, Corvallis, OR 1 2 Integrators are key building blocks in many analog signal processing circuits and systems. They are typically implemented using either an opamp-RC or a Gm-C architecture dependi
Silicon Laboratories, Corvallis, OR
ISSCC 2012 Session 21 Analog Circuits
A 60V Capacitive Gain 27nV/√Hz 137dB CMRR PGA with ±10V Inputs
Christian Birk1, Gerard Mora-Puchalt2
Analog Devices, Valencia, Spain 1 2 This paper describes the implementation of a 60V programmable-gain amplifier (PGA) with ±10V differential input range and a 5V output compatible with many commercially available ADCs.
Analog Devices, Cork, Ireland
ISSCC 2012 Session 21 Analog Circuits
A 0.3-to-1.2GHz Tunable 4th-Order Switched gm-C Bandpass Filter with >55dB Ultimate Rejection and Out-of-Band IIP3 of +29dBm
Milad Darvishi, Ronan Van der Zee, Eric Klumperink, Bram Nauta
The trend towards reconfigurable receivers requires on-chip flexible filters that can replace dedicated, bulky and non-tunable filters (e.g., SAW and BAW [1]). Although BAW filters are compatible with silicon processes,
University of Twente, Enschede, The Netherlands
ISSCC 2011 Session 13 Analog Circuits
A 3.3V-Supply 120mW Differential ADC Driver Amplifier in 0.18µm SiGe BiCMOS with 108dBc IM3 at 100MHz Gwilym F. Luff
Intersil, Harlow, United Kingdom, Fully differential (operational) amplifiers (FDA) have become the preferred
method of driving 1st and 2nd Nyquist zone signals into 100 to 500 Ms/s 12 to 16 bit ADCs. Previously the best performance (95dBc IM3 at 100MHz [1]) came from designs in dielectrically isolated (DI) Silicon Germanium com
ISSCC 2011 Session 13 Analog Circuits
A 36V JFET-Input Bipolar Operational Amplifier with 1µV/°C Maximum Offset Drift and –126dB Total Harmonic Distortion
Martijn F. Snoeij, Mikhail V. Ivanov
A 36V JFET-input bipolar operational amplifier is presented with a maximum offset drift of 1µV/°C over a temperature range of –40 to 125°C, which represents a 3x improvement on the state-of-the-art. This is achieved with
Texas Instruments, Erlangen, Germany
ISSCC 2011 Session 13 Analog Circuits
A 6.7nV/√Hz Sub-mHz-1/f-Corner 14b Analog-toDigital Interface for Rail-to-Rail Precision Voltage Sensing
Chinwuba D. Ezekwe, Johan P. Vanderhaegen, Xinyu Xing, Ganesh K. Balachandran
Robert Bosch, Palo Alto, CA Many sensors demand energy-efficient precision voltage sensing interfaces with low noise performance down to very low frequencies. Examples include micro Kelvin resolution temperature sensors
ISSCC 2011 Session 13 Analog Circuits
A Current-Feedback Instrumentation Amplifier with a Gain Error Reduction Loop and 0.06% Untrimmed Gain Error
Rong Wu, Johan H. Huijsing, Kofi A.A. Makinwa
Current-feedback instrumentation amplifiers (CFIAs) have significant advantages over the classic three-opamp topology: better power efficiency [1, 2], higher CMRR and rail-sensing capability [4]. Their main disadvantage,
Delft University of Technology, Delft, The Netherlands
ISSCC 2011 Session 13 Analog Circuits
A 5.9nV/√Hz Chopper Operational Amplifier with 0.78µV Maximum Offset and 28.3nV/°C Offset Drift Yoshinori Kusuda
Analog Devices, Wilmington, MA, Many auto-zero or chopper operational amplifiers have been reported with low
offset and low-offset drift. The resulting baseband noise can also be a significant error source, and thus reducing the total error down to sub µV levels at DC and low frequencies has been targeted. Chopping is more suit
ISSCC 2011 Session 13 Analog Circuits
Filterless Integrated Class-D Audio Amplifier Achieving 0.0012% THD+N and 96dB PSRR When Supplying 1.2W
Mykhaylo Teplechuk, Tony Gribben, Christophe Amadi
Dialog Semiconductor, Edinburgh, United Kingdom High power efficiency, small size and reduced heat dissipation are highly desirable in battery-powered mobile systems and switched-mode class-D amplifiers can readily satis
ISSCC 2011 Session 13 Analog Circuits
A 1.2A Buck-Boost LED Driver with 13% Efficiency Improvement Using Error-Averaged SenseFET-Based Current Sensing
Sachin Rao1, Qadeer Khan1, Sarvesh Bang2, Damian Swank2,
significant efficiency loss due to the presence of a current regulation element (CRE) in series with the LED. In a conventional driver, either a series current source [1] or a sense resistor [2, 3] acts as a CRE to regul
Arun Rao2, William McIntyre2, Pavan Kumar Hanumolu1 1 2 Oregon State U
ISSCC 2011 Session 13 Analog Circuits
A Simple LED Lamp Driver IC with Intelligent Power-Factor Correction
Jong Tae Hwang, Kunhee Cho, Donghwan Kim, Minho Jung,
lighting devices [1, 2] and LCD backlight devices [3]. Prior to emergence of highperformance LED devices, the fluorescent lamps have been in a strong position in lighting systems as compared to the incandescent lamps sin
Gyehyun Cho, Seunguk Yang Fairchild Semiconductor, Bucheon, Korea High
ISSCC 2010 Session 4 Analog Circuits
A 3.2GHz-Sample-Rate 800MHz Bandwidth Highly Reconfigurable Analog FIR Filter in 45nm CMOS
Eoin O’hAnnaidh1,2, Emmanuel Rouat1, Sarah Verhaeren1,
hard disk drive and wireless video download, high-order filtering becomes increasingly difficult to realize in deep submicron CMOS technologies. Indeed CMOS transistors suffer from poor analog performances under reduced
Stéphane Le Tual1, Christophe Garnier1 1 STMicroelectronics, Crolles,
ISSCC 2010 Session 4 Analog Circuits
A 105dB-Gain 500MHz-Bandwidth 0.1Ω-OutputImpedance Amplifier for an Amplitude Modulator in 65nm CMOS
Chul Kim1,2, Chang-seok Chae1, Young-sub Yuk1, Yi-Gyeong Kim3,
modulation, where a constant-amplitude phase signal is amplified by an efficient switched-mode power amplifier (PA) and an envelope signal is modulated at the drain of the PA, has been proven to improve efficiency and li
Jong-Kee Kwon3, Gyu-Hyeong Cho1 1 KAIST, Daejeon, Korea Hynix Semicond
ISSCC 2010 Session 4 Analog Circuits
45nm CMOS 8Ω Class-D Audio Driver with 79% Efficiency and 100dB SNR
Sreekiran Samala, Vineet Mishra, Kalyan Chekuri Chakravarthi
Integrating audio and power management into a system-on-chip (SoC) is of interest due to reduced board area and cost. Integrated Class-D audio drivers need to drive high voltages to deliver high power across small loads;
Texas Instruments, Bangalore, India
ISSCC 2010 Session 4 Analog Circuits
Class-G Headphone Driver in 65nm CMOS Technology
Alex Lollio1, Giacomino Bollati2, Rinaldo Castello1, 1
and DMB reception. The users may wish to use these features for many hours and a low efficiency amplifier could deplete the battery in a short time. There are two classes of power amplifiers usually used for this applica
University of Pavia, Pavia, Italy Marvell, Pavia, Italy 2 Modern cellu
ISSCC 2010 Session 4 Analog Circuits
A 10mW Stereo Audio CODEC in 0.13µm CMOS
Xicheng Jiang1, Jungwoo Song1, Todd L. Brooks1, Jianlong Chen1, Vinay
stereo audio CODECs are increasingly needed in wireless devices, such as Bluetooth headsets and smart phones. These portable devices are usually powered by low-voltage batteries with limited capacities. It is of particul
Chandrasekar1, Felix Cheung1, Sherif Galal1, Darwin Cheung1, Gil Cho A
ISSCC 2010 Session 4 Analog Circuits
A 21nV/√Hz Chopper-Stabilized Multipath CurrentFeedback Instrumentation Amplifier with 2µV Offset
Qinwen Fan, Johan H. Huijsing, Kofi A.A. Makinwa
Amplifiers with low offset and low 1/f noise usually employ auto-zeroing (AZ) and/or chopping. However, AZ suffers from noise aliasing, and so requires more power dissipation for a given noise specification. Chopping, al
Delft University of Technology, Delft, Netherlands