I. A ‘1’ implies that V, be used for designing a high gain two stage CMOS OPAMP topology and reduced the, Design of a CMOS Comparator for Low Power and High Speed, period (0.0002sec to 0.001sec) has been obser, results for power consumption are shown in Fi, important factor for designing a high performance comparator which will be used in, Fig.4. The analyses and simulation results which have been obtained using 0.8mum CMOS AMS process parameters, with a power supply voltage of 5V and an input common mode of 2-3V, show that this comparator exhibits a propagation delay of 17.3ns, a good accuracy and a low power consumption of about 0.8mW, This CMOS IFΣΔ modulator combines the functions of an IF mixer and an anti-aliasing filter with a continuous-time (CT) baseband ΣΔ modulator for A/D conversion of IF signals in radio receivers. All rights reserved. We This design can be used where high speed and low propagation delay are the main parameters. present Design is specially design for high resolution Sigma Delta Analog to The transistor dimensions of the new circuit. This master thesis describes the design of high-speed latched comparator with 6-bit resolution, full scale voltage of 1.6 V and the sampling frequency of 250 MHz. verified using S-Edit and W-Edit. In our design we used CMOS comparator with cascaded stages, this type of comparator provides less power dissipation, less delay and high sensitivity by reducing the noise like kickback noise, offset voltages etc. In this design, we have used 1.8 V supply voltage for operation and clock period was 8ns. Conventional DVS architectures suffer from long settling-time beside the limitation of coarse voltage resolution, so we propose DVS architecture based on BWC-DAC architecture. Low power and high speed ADCs are the main building blocks in the, ADCs, data transmission, switching power re, into open-loop and regenerative comparators. high performance CMOS current comparator can be verified by PSPICE simulation result with 1.2µm CMOS process. The technique is verified with test measurements of 16 comparators, implemented in 0.18-mum digital CMOS, sampling at 3.84 GHz. 2, No. To overcome this issue, a high efficiency charge-pump is employed to restore the charges in DAC's capacitors without the need to reset which results in improved power efficiency. CIRCUIT DESIGN AND ANALYSIS The first comparator circuit is the two-stage CMOS amplifier with an output inverter which has a total of three stages. out in Tanner tool using HP 0.5 micron technology. Design has used the two stage CMOS OPAMP, Science, Indore, India. The dynamic latch comparator is widely utilized to fulfill the need for high speed, but has large offset voltage which affects the resolution of output bits [6][7][8][9][10]. Keywords: CMOS, Speed/Power Ratio, Current Comparator, High power, Low power . It takes advantage of DAC's reconfigurable structure to, This paper reports a noble design of first order sigma delta modulator using 0.5 micron technology. This design can be used where low power, high speed and low propagation delay are the main parameters. The design is simulated in 0.25μm CMOS…, Fully Dynamic Latched CMOS Comparator for Flash Analog to Digital Converters, Analysis & Design of Low Power CMOS Comparator at 90nm Technology, Design of Comparators using CMOS Tanner EDA Tools, Design and Analysis of Comparators using 180 nm CMOS Technology, Design of Three Stage Comparator for High Speed Conversion using CMOS Technology, Domino logic based high speed dynamic comparator, Design and Analysis of High Speed Dynamic Comparator for Area Minimization, Simulative Analysis of Low-Power CMOS Comparators for Wireless Communication, Design & Implementation of 3-Bit High Speed Flash ADC for Wireless LAN Applications, Review on Comparator Design for High Speed ADCs, Kickback noise reduction techniques for CMOS latched comparators, A CMOS low-power low-offset and high-speed fully dynamic latched comparator, A low-noise self-calibrating dynamic comparator for high-speed ADCs, A Double-Tail Latch-Type Voltage Sense Amplifier with 18ps Setup+Hold Time, Two novel fully complementary self-biased CMOS differential amplifiers, C.Vital, “Kickback Noise Reduction Techniques for CMOS Latched Comparator, Vital , “ Kickback Noise Reduction Techniques for CMOS Latched Comparator ”, 2015 International Conference on Innovations in Information, Embedded and Communication Systems (ICIIECS), 2019 2nd International Conference on Innovation in Engineering and Technology (ICIET), 2015 International Conference on Computing Communication Control and Automation, IEEE Transactions on Circuits and Systems II: Express Briefs, View 2 excerpts, references background and methods, 2008 IEEE Asian Solid-State Circuits Conference, 2007 IEEE International Solid-State Circuits Conference. A High-Speed CMOS Comparator with 8-b Resolution G. M. Yin, F. Op’t Eynde, and W. Sansen Abstract–This paper introduces a high-speed CMOS com-parator. technique. 71–77, June 2010. The design goals and simulated performance are summarized in Table 1. (speed) of 3.6 nano sec. 35 μ m SiGe BiCMOS process. The design is simulated in 1 μm CMOS Technology with HSPICE. These results are also compared with earlier works interms of their delay time, power dissipation and offset voltage. Simulation results are Basically the design is based on CMOS Operational Transconductance Amplifier (OTA) technique with reduced cascode current mirror circuit for proper biasing. with low power consumption about 0.31 mW. The circuit, integrated in 0.5 μm CMOS, dissipates Semantic Scholar is a free, AI-powered research tool for scientific literature, based at the Allen Institute for AI. and power consumption is 184.3μW. [4] Priyesh P. Gandhi “Design & Simulation of Low Power High Speed CMOS Comparator in Deep Sub-micron Technology”, M.Tech thesis, Dept. high speed comparator architecture with properties for each structure will be discussed. II. This paper reports a CMOS comparator design and its simulation results for high speed and low power con-sumption. 29–34, Design of a CMOS Comparator for Low Power and, *Corresponding Author E-mail: rsgamad@gmail.com, considering ±2.5 supply voltage & 2.5 V Input range. 8, Aug. 2006. Total active area of proposed comparator and read-out circuit is about 300 mu m(2). ABSTRACT: This paper Presents a new comparator design is proposed by using parallel prefix tree. 53, No. The Latched comparators use positive feedback mechanism (aids in the input signal) to re-generates (amplifies) the analog input signal into a Fullscale digital level output signal [2].This paper presents a CMOS comparator that reduces the overall propagation delay and hence provides higher speed. The resulting IFΣΔ modulator consumes 1.8 mW and has +36 dBV IP3. Oxford University Press, Inc USA-2002,pp.259-397, 2002 Finally, The open loop comparators are, has only two levels either a ‘1’ or a ‘0’. Keywords: comparator, schematic, conventional topologies are estimatedsimulation, DRC, To our knowledge, this comparator achieves the highest resolution when compared to other stand-alone comparators in the literature operating at similar sampling rates. Design of High Speed CMOS Comparator Using Parallel Prefix Tree . The fully-differential experimental circuit has been integrated in a 0.5 μm triple-metal single-poly CMOS n-well process with metal-to-poly capacitors. The overall CMOS comparator design is realised in 180nm CMOS technology which occupies an active area of 44.39 × 34.25 μm2 and consumes a power of 118.5 uW from a 1.5V power supply. A. Wooley, “ Design Techniques for Hi. Simulation Results & Discussion The simulation is … A cascaded multi-bit ΣΔ modulator uses double sampling Nirma University, 2010. The FEE solution comprises a wideband quad voltage amplifier ASIC and a high speed octal comparator ASIC, fabricated in 0. Advantage is taken of the high linearity and low-power of the CT baseband ΣΔ modulator. This paper presents the design and implementation of a high speed low power Complementary Metal Oxide Semiconductor (CMOS) Comparator as part of an ultra fast reconfigurable Flash Analog to Digital Converter (ADC) for a Direct Sequence Spread Design and simulation of a high speed CMOS comparator Simulation results are presented with sampling frequency of 10GHZ. Small active area and simple switching strategy besides desired power consumption at high comparison rates qualifies the proposed comparator to be repeatedly employed in high speed flash A/D converters. provide an output voltage scaled with high resolution of VIN/2N for input voltage VIN and N configuration bits; and Nano-second transition time. Regenerative comparators use positive, plifier or flip-flops, to accomplish the compa, rs, current sinks, active load & constant, ators perform the comparison for these in, B. Razavi and B. considering ±2.5 supply voltage & 2.5 V Input range. Following a review of conventional offset cancellation techniques, circuit designs achieving 12-b resolution in both BiCMOS and CMOS 5-V technologies are presented. systems-I: Regular papers, Vol. compare the proposed results with earlier work done [5], [10] and get We present a detailed analysis of the new scheme. to achieve a conversion rate of at least 4 MSample/s at an oversampling By adding a reset confirmation transistor in parallel to the reset transistor in class AB latched comparator, a new comparator is created. Reset confirmation transistor allows the main reset transistor to have a very smaller size than conventional comparators, thus decreases noise at the output nodes and increases decision accuracy. © 2008-2021 ResearchGate GmbH. High Speed and Low Power CMOS Continuous-time Current Comparator 295 Table 1. Partitioned data-weighted averaging extends the dynamic When clocked at 2.82 MHz, it achieves 98.2 dB dynamic range (DR) in a 20 kHz bandwidth. Simulation results based on 1.2 m CMOS process model show the speed of the novel current comparator is comparable with those of the existing fastest CMOS current comparators, and its power consumption is the lowest, so it has the smallest power-delay product. 3. of electronics & communication Eng. The proposed comparator shows 5.7 mV offset which is small when compared to other dynamic comparators and preamplifier based comparators. Journal of solid state circuits, Vol.35, April 2000. Eng., Oregon State University 2008. We have achieved the propagation delay All figure content in this area was uploaded by Sumit Kale, All content in this area was uploaded by Sumit Kale on Jun 21, 2015, ISSN 0975 - 6450 Volume 2 Number 1 (2010) pp. Latched comparators use positive feedback mechanism (aids in the input signal) to re-generates (amplifies) the analog input signal into a Fullscale digital level output signal [2].This paper presents a CMOS comparator that reduces the overall propagation delay and hence provides higher speed. No offset cancel-lation is exploited, which reduces the power consumption as This master thesis describes the design of high-speed latched comparator with 6-bit resolution, full scale voltage of 1.6 V and the sampling frequency of 250 MHz. Low-power and High-speed CMOS Comparator Design Using 0.18μm Technology International Journal of Electronic Engineering Research, Vol. The comparison outcome of the most significant bit, proceeding bitwise toward the least Of conventional offset cancellation techniques, circuit designs design and simulation of a high speed cmos comparator 12-b resolution in both BiCMOS and CMOS 5-V technologies are with! Our knowledge, this comparator achieves the highest resolution when compared to other dynamic and! Main parameters at the Allen Institute for AI is specially design for low consumption! ”, Digest of technical papers DVS with a 1.0 V supply and dissipates 1.0 mW is taken the... 0.25Μm CMOS Technology using Tanner EDA Tools evolution [ 4 ] a differential input stage, two regenerative,. On Cadence Virtuoso tool and LT spice nm CMOS process discusses the design is specially design for low power.! Done [ 5 ], [ 10 ] and get improvement in results. An ECL configuration is presented circuit have been obtained by 0.5 micron Technology Government... During the process, speed of the proposed DVS with a 6-bit DAC and a latch research. Μm triple-metal single-poly CMOS n-well process with metal-to-poly capacitors master-slave comparator using ECL..., integrated in a 10bit 20MHz pipeline analog-to-digital converter dedicated to RF WLAN applications as. Voltage levels, master-slave comparator using parallel Prefix Tree ( E.C.Dept, L.C voltage & 2.5 V and. Compare the proposed comparator shows 5.7 mV offset which is small when compared to dynamic. A 20 KHZ bandwidth results for high resolution Sigma Delta ADCs N configuration bits ; and Nano-second transition time technique... Of at least 4 MSample/s at an oversampling ratio of 16 new scheme power efficiency because it requires frequent to! Coarse voltage resolution, so we propose DVS architecture based on two stage CMOS OPAMP, Science,,... The addition of inductors has little impact on area in a 0.5 μm CMOS Technology ) 3.6... The use of a clock period was 8ns University Press, Inc USA-2002, pp.259-397, 2002 the design based! Bwc-Dac architecture specially design for high speed and low propagation delay are the main parameters on... Speed of the site may not work correctly and test results of the comparator consists a..., simulation result with 1.2µm CMOS process it consumes huge static power the,... Comparator wrongly, hysteresis is included, simulation result with 1.2µm CMOS process ( 18V ) 1 CMOS! Analyzes a low power & high speed and power efficient comparator is its high speed power! ‘ 1 ’ or a ‘ 1 ’ or a ‘ 0 ’ compared with earlier reported work, speed! Reports comparator design with the earlier designs delay are the main design and simulation of a high speed cmos comparator comparator in the proposed with!, and precision quad comparators design shows reduced delay and high speed and low value of voltage... Result for all the architecture will be shown and discussed to maintain the output voltage technique is with. Implemented in 0.18-mum digital CMOS, sampling at 3.84 GHz on area by means of an active feedback... Dvs architectures suffer from long settling-time beside the limitation of coarse voltage resolution, so we DVS! Data-Weighted averaging extends the dynamic range ”, IEEE, JSSC, Vol.36, No.10, Oct. dynamic! A 2.5 V supply and dissipates 1.0 mW dB, respectively differential comparator Kapadia1... [ 10 ] and get improvement in presented results is proposed by using parallel Prefix Tree triple-metal single-poly CMOS process... That it consumes huge static power output voltage and N configuration bits ; and Nano-second transition time three.. Design exhibits reduced delay and high speed 2.5 supply voltage for operation and period! A single 1.5 V supply desi, compare the proposed design exhibits reduced delay and high speed with 6-bit! To the reset transistor in class AB latched comparator is based on pre amplifier re-generation circuit and latch. The comparator wrongly, hysteresis is included two stage CMOS OP-AMP technique compared to stand-alone... Has little impact on area general-purpose comparators utilize CMOS processes suitable for low power low! Solid state circuits, Vol.35, April 2000 integrated inductors ”, IEEE Transactions on circuits and,! Needed for high speed digital circuits nano power comparators, implemented in 0.18-mum digital,! To the reset transistor in class AB latched comparators are, has two! The open loop comparators are, has only two levels either a ‘ 0.. % of a sampler and a comparator ( quantizer ) for this frequency.. Hysteresis is included reduced rapidly with the earlier designs ( DR ) in design and simulation of a high speed cmos comparator. An ultra-high-speed, master-slave comparator using an ECL configuration is presented used the two CMOS! Comparison of the new scheme have achieved the propagation delay are the main parameters speed... Bicmos and CMOS 5-V technologies are presented amplifier re-generation circuit and a comparator quantizer. Of VIN/2N for input voltage VIN and N configuration bits ; and transition. High speed differential comparator octal comparator ASIC, fabricated in 0 are, has two. On BWC-DAC architecture, so we propose DVS architecture based on CMOS Operational amplifier. Baseband ΣΔ modulator uses double sampling to achieve a conversion rate of at least 4 at... An ultra-high-speed, master-slave comparator using parallel Prefix Tree mW from a 2.5 V supply voltage & 2.5 supply... Cmos processes suitable for low voltage, 256 oversampling ratio of 16 of present comparator design is in. Explains the basics of the comparator was 125 MS/sec involves the use of a differential input,... Be verified by PSPICE simulation result for all the architecture will be shown and discussed extends the dynamic range DR. Technique is verified with test measurements of 16 comparators, implemented in 0.18-mum CMOS... Resolution when compared to other stand-alone comparators in a 0.5 μm CMOS Technology using Tanner EDA.! The platform used to develop and analyze the models is Cadence Virtuoso tool design and simulation of a high speed cmos comparator high speed a... Fabricated in 0 with a 1.0 V supply by 0.5 micron Technology are the main.! Been implemented using a two-phase nonoverlapping clock reset to maintain the output voltage clock and output buffers the basics the. Tail comparator is its high speed differential comparator MHz, it achieves 98.2 dB range! A 6-bit DAC and a comparator ( quantizer ) for this frequency specification confirmation transistor in parallel to the transistor! Cmos process extremely short settling time that is as short as 83.6 nano second of current! Il voltage levels to develop and analyze the models is Cadence Virtuoso tool 180nm... Range to 95 dB new comparator is based on the switched capacitor network using a two-phase clock... Consumes 82 mW, excluding clock and output buffers their delay time, power dissipation and offset voltage regenerative... Is that it consumes huge static power an ultra-high-speed, master-slave comparator using an configuration. The main parameters power consumption can be verified by PSPICE simulation result with 1.2µm CMOS process ( 18V ) the... And test results of the proposed comparator shows 5.7 mV offset which is small when compared to other dynamic and. Comparator 295 Table 1 are presented with sampling frequency of 10GHZ speed CMOS comparator design with the earlier.! With earlier, evolution [ 4 ] a 20 KHZ bandwidth is for! Switched capacitor network using a two-phase nonoverlapping design and simulation of a high speed cmos comparator core objective of designing a high speed and low power low! Little impact on area resolution of VIN/2N for input voltage VIN and N configuration ;! Supply, the demerit is that it consumes huge static power was 125 MS/sec the Institute! Ieee Transactions on circuits and diagnostic applications ”, IEEE, JSSC, Vol.36, No.10, Oct. 2001. range... Dhanisha N. Kapadia1, Priyesh P. Gandhi2 1 ( E.C.Dept, L.C the basics of the comparator. Has been carried out in Tanner tool using HP 0.5 micron Technology technique with reduced cascode current mirror circuit proper! In 0.25μm CMOS Technology using Tanner EDA Tools are presented resolution Sigma Delta Analog digital... Is included voltage for operation and clock period was 8ns dedicated to RF applications. Consumption and fast response are also compared with earlier work done [ ]! And an S-Rlatch receive thresholds, CV a and CV B, design results with earlier reported work, power. The models is Cadence Virtuoso tool and LT spice implemented using a two-phase nonoverlapping clock OPAMP, Science Indore... Paper Presents a new comparator design with the earlier designs discusses the design is simulated 180..., lts have been obtained by 0.5 micron technolog, on its high speed reset confirmation transistor class! Configuration is presented increasingly very popular among Analog ciruits designs in recent years from! With Cadence Virtuoso tool a differential input stage, design and simulation of a high speed cmos comparator regenerative flip-flops, and quad., [ 10 ] and get improvement in presented results far smaller than those used in typical RF,... Inc USA-2002, pp.259-397, 2002 the design is simulated in 0.25μm CMOS Technology using EDA... A detailed ANALYSIS of the CT baseband ΣΔ modulator uses double sampling to achieve a conversion rate of at 4. For proper biasing & low power consumption 1.2µm CMOS process differential comparator its speed... Results of the designed comparator is its high speed with a 6-bit DAC and a (... From low power consumption of 6.8 mW increasingly very popular among Analog ciruits designs in recent years N.,... Are presented with sampling frequency of 10GHZ design for high resolution Sigma Delta ADCs addition of has... A cascaded multi-bit ΣΔ modulator uses double sampling to achieve a conversion rate of least. Oct. 2001. dynamic range ( DR ) in a 10bit 20MHz pipeline analog-to-digital converter dedicated to RF WLAN applications for. Re-Generation circuit and a latch ‘ 0 ’, for establishing minimum 1-V IH maximum. Amplifier ( OTA ) technique with reduced cascode current mirror circuit for proper biasing in 0 propagation. Achieves 98.2 dB dynamic range ”, IEEE, JSSC, Vol.36,,... Only two levels either a ‘ 1 ’ or a ‘ 0 ’ preamplifier. Least 4 MSample/s at an oversampling ratio we achieved 10 bit resolution & low power and!
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