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Capacitor Mismatch Calibration Technique to Improve the …
In low-power high-resolution SAR ADCs, unit capacitor of DAC is chosen according to the matching limitations rather than the thermal noise restrictions. For high resolution SAR …
MATCHING AND MISMATCH SHAPING
This paper presents an efficient modeling method for the effects of capacitor mismatches in SAR ADCs. As the capacitor mismatch can severely degrade accuracy, it is necessary …
A 99.43% Energy Saving Switching Scheme with Asymmetric Binary …
The common-mode voltage remains at VREF/2 except for the last two bit-cycles. 1% capacitor mismatch leads to root-mean-square (RMS) values of 0.321 LSB for DNL and INL. Inaccuracy of VCM/Vaq has ...
A Highly Area-Efficient Switching Scheme based on Charge
A novel area-efficient capacitor switching scheme for successive approximation register (SAR) analogue-to-digital converters (ADCs) is proposed. By using the charge-sharing and capacitor-holding technique, the proposed switching method achieves deciding the last three least-significant-bits (LSBs) with only two unit …
Journal of Circuits, Systems and Computers
Capacitor mismatch plays an important part in the spurious-free dynamic range (SFDR) performance of high-resolution successive approximation register (SAR) analog-to-digital …
Mismatch-Aware Common-Centroid Placement for Arbitrary-Ratio Capacitor …
In general, capacitor mismatch can result from two sources of errors: random mismatch and systematic mismatch. ... while systematic mismatch is mainly due to asymmetrical layout and processing ...
Characterisation of anomalous forces on asymmetric …
of one of capacitors was positioned in order to point out in the opposite direction of the other. In this way, a possible dipole torque can be taken in place by the thrust generated for both capacitors. Each asymmetric capacitor of 40 g was assembled using a polystyrene cylinder block (32 mm diameter and 3 mm
A novel switching scheme and area-saving architecture for SAR ADC
An asymmetric architecture, reduces 81.25% of the total capacitance over the conventional architecture, is proposed. Meanwhile, the proposed scheme achieves …
MATCHING AND MISMATCH SHAPING
Systematic Mismatch † Some good design techniques exist to help minimize these matching errors Use multiples of small, unit sized devices (transistors stripes, resistor and capacitor arrays) Use cascodes – increased output impedence (smaller current variations with changes in V DS) Avoid asymmetric loading – especially for dynamic
(PDF) Asymmetrical PWM Series-Capacitor High-Conversion …
Inserting a series capacitor between power switches of phase A increases loop parasitic inductance, introduces a time delay mismatch between the gate voltages of the two switches, and causes ...
A Flexible Quasi-Solid-State Asymmetric Electrochemical Capacitor Based ...
An asymmetric sodium-ion capacitor with a wide voltage window of 3.2 V was successfully assembled, and it delivered a high energy density of 53.1 Wh kg-1 at a power density of 3.2 kW kg-1. View ...
Model Predictive Control of an Asymmetric Flying Capacitor …
Multilevel converters and, in particular, flying capacitor (FC) converters are an attractive alternative for medium-voltage applications. FC converters do not need complex transformers to obtain the DC-link voltage and also present good robustness properties, when operating under internal fault conditions. Unfortunately, with standard …
A capacitor mismatch calibration scheme for SAR ADC based …
Capacitor mismatch problem due to process variation causes weight error, which deteriorates the linearity of SAR ADC. In this paper, a novel calibration scheme based on …
The Effects of Comparator Dynamic Capacitor Mismatch in SAR …
The effects of dynamic capacitor mismatch are first analyzed and then two feasible correction schemes are proposed to mitigate the impact of the nonlinear …
Calibration of Capacitor Mismatch and Static Comparator Offset …
Request PDF | On Oct 1, 2020, Antonio Lopez-Angulo and others published Calibration of Capacitor Mismatch and Static Comparator Offset in SAR ADC with Digital Redundancy | Find, read and cite all ...
Dither‐based background calibration of capacitor mismatch and …
According to the thermometer codes, DWA logic operates to control the sampling capacitors to generate the residue of the first stage. Then, the residue is magnified times by the inter-stage amplifier and sampled by the second stage. At the same time, the most significant bit (MSB) capacitor of the second stage,, is connected to …
A Soft-Switched Asymmetric Flying Capacitor Boost …
LEFEVRE AND MOLLOV: SOFT-SWITCHED ASYMMETRIC FLYING-CAPACITOR BOOST CONVERTER 2201 Fig. 2. (a) Interleaved boost. (b) Three-level transformer-based boost. Fig. 3. (a) Three-level boost. ... FC/2, the duty cycle mismatch between switches is usually negligible, in particular in continuous-current mode and small current ripples [20]. …
Current waveforms of symmetric and asymmetric LLC resonances.
Similarly, two flying capacitors are added in the circuit to realize CS in asymmetric three-phase LLC converter in [18]. The idea in [18] is the extension of [17].
Lecture 11 Mismatch and Mismatch Shaping
Systematic Mismatch • Some good design techniques exist to help minimize these matching errors Use multiples of small, unit sized devices (transistor stripes, resistor and capacitor arrays) Use cascodes – increased output impedence (smaller current variations …
Histogram-based calibration of capacitor mismatch in SAR ADCs
This Letter proposes a histogram-based calibration technique to correct SAR ADC capacitor mismatch. The calibration utilises a histogram windowing technique to detect capacitor mismatch. A recursive algorithm is proposed to iteratively tune all the bit weights. The algorithm is entirely digital and does not require any additional analogue …
MOM capacitor design challenges and solutions SFT
MOM capacitor simulation challenges and solutions Maxim Ershov Silicon Frontline Technology, 595 Millich Dr., Campbell, CA 95008, USA Phone: 1-408-963-6916, Fax: 1-408-963-6906, E-mail: maxim@siliconfrontline Abstract This application note describes characteristics and design challenges of metal-oxide-metal
A 99.77% energy-reduced asymmetric capacitance …
Based on the monotonic switching procedure and asymmetric capacitance array, the novel architecture achieves 97.65% reduction in capacitor area over the conventional SAR ADC. Besides, …
Influence of asymmetric/symmetric source/drain ...
Experimental results on asymmetry and mismatch (A&M) characteristics are discussed for 0.5-/spl mu/m surface-channel n-MOSFETs and buried-channel p-MOSFETs fabricated with four ion-implantation methods and designed with a conventional and a side-by-side layout. The side-by-side layout is useful to improve A&M caused by …
Histogram-based calibration of capacitor mismatch …
This Letter proposes a histogram-based calibration technique to correct SAR ADC capacitor mismatch. The calibration utilises a histogram windowing technique to detect capacitor mismatch. A …
Force on a high voltage capacitor with asymmetrical electrodes
If the surface electric density is uniform under the ideal condition, the thrust force of an asymmetric capacitor charged with high-voltage electricity can be expressed as Equation (1): where f is ...
How to calculate capacitor mismatch? | Forum for Electronics
People said limitation of capacitor is mismatch more than thermal noise. So I want to calculate the mismatch between Cs and Cf in the MDAC with the help of foundry process files. ... Usually the given mismatch σ value is for asymmetric (but adjacent) device configurations - an important figure e.g. for the offset estimation of a …
Model Predictive Control of an Asymmetric Flying Capacitor …
Multilevel converters and, in particular, flying capacitor (FC) converters are an attractive alternative for medium-voltage applications. FC converters do not need complex transformers to obtain the DC-link voltage and also present good robustness properties, when operating under internal fault conditions. Unfortunately, with standard modulation …
A 6 to 18 GHz flat high gain power amplifier using mismatch …
To reasonably compare the performance of the mismatch-consistent MCR under different values of α and k, the spatial surface distributions of the gain (Z 21), 3 dB bandwidth (BW), and gain-bandwidth product (GBW) are depicted in Fig. 5, respectively.An example of the set of non-special values chosen during the PA design process is given, …