a val'iable capacitor by step-up methods. If the variable air capacitor, X, having a range from 100 to 1,100 pf, is to be calibrated at every 100-pf division mark, it is necessary to have a fixed air capacitor, S, of approximately 100 pf that can be connected in parallel with the variable capacitor under test in a precisely repeatable manner.
2. Capacitance Calibration The precision measurement of capacitors for the purpose of calibration is generally based on a national primary standard of high accuracy, secondary/working Standards derived from it, and a capacitance- (or LCR-) meter used for the measurement (i.e. calibration) of the devices under test (DUT).
There are several measuring methods that are available for calibrating 1 nF capacitors. They include calibration using a vector network analyzer in combination with a capacitance bridge. This method covers a very wide frequency range (up to 10 MHz) and is complex to perform.
Selection and calibration of capacitors for use as Standards is a challenging task, especially since the accuracies required, depening on the application, can be very demanding for the test gear as well as for the secondary- and working-standards used.
In our case, the capacitor is connected to the LCR meter via a 0.61 m cable. The calibration interpolation factor, Kc = 0, because all of the measurements are taken at direct calibration frequencies. The cable length factor, Kd = 0.00025(1 + 50fm), for the calibration interpolation factor is given for a cable length of 1 m.
The most accurate capacitor calibrations have an uncertainty of ±25 ppm for capacitance and an un- certainty of ±5xlO~* for dissipation factor. For capacitors with large dissipation factors, the dissi- pation factor uncertainty is generally at least ±1% of the measured value ±5X 10~*.
The excellent precision of repetitive substitution procedures is exploited by step-up or step-down methods to extend measurements to higher or lower magnitudes without …
To address the capacitance array mismatch in SAR ADCs, this paper proposes a novel capacitor calibration scheme based on the Time-to-Digital Converter (TDC). This scheme achieves calibration accuracy as high as …
This paper presents a calibration method and an uncertainty budget for capacitance measurements performed on micrometric size capacitors at microwave …
To address the capacitance array mismatch in SAR ADCs, this paper proposes a novel capacitor calibration scheme based on the Time-to-Digital Converter (TDC). This …
A Capacitive Mismatch Calibration Method for SAR ADCs Based on TDC Qing Shen 1, mei Jiang, Junxian Chen, ... of logarithmic and square root calculations, resulting in a high computa- ...
A self-calibration method to calibrate the nonlinearity due to capacitance mismatch in successive approximation register (SAR) analog-to-digital converter (ADC) is …
The Andeen-Hagerling AH2700A Automatic Capacitance is used for direct measurements and is calibrated traceable to the SI, through a National Metrology Institute (NIST). IET Labs can also provide accredited calibration for …
Ref. [10] presents a direct self-calibration technique using a calibrated digital-to-analog converter (C-DAC). However, the complex relationship between the resolution, the …
a val''iable capacitor by step-up methods. If the variable air capacitor, X, having a range from 100 to 1,100 pf, is to be calibrated at every 100-pf division mark, it is necessary to have a fixed air …
Methods of capacitance calibration 1. Direct comparison method. The direct comparison method involves comparing the capacitance of the DUT with a reference capacitor of known value. …
However, the non-uniform sampling intervals of the DRS4 are not revealed clearly by the DRS4 Eval V4 method because the time calculation and correction in the …
If a direct measurement method were available that was sufficiently accurate and straightforward to make the calibration of these reference trans- formers a simple task, then that method could …
standard mode plus reversing heat capacity as measured by Modulated DSC (MDSC®). In the standard mode, heat flow is continuously converted to heat capacity as described in equation …
2. Capacitance Calibration The precision measurement of capacitors for the purpose of calibration is generally based on a national primary standard of high accuracy, secondary/working …
Standard capacity measure whose capacity, with respect to it''s reference line, is equal to the volume of water that it delivers, during a predefined dripping time, at the reference …
to capacitor mismatch, which makes it difficult to improve the accuracy. In order to improve the SNDR (Signal-to-Noise and Distortion Ratio) of SAR ADCs, many design methods for …
Standard capacity measure whose capacity, with respect to it''s reference line, is equal to the volume of water that it delivers, during a predefined dripping time, at the reference …
If a direct measurement method were available that was sufficiently accurate and straightforward to make the calibration of these reference trans- formers a simple task, then that method could …
Unleash the potential of capacitors with the Capacitor Calculator. Calculate capacitance, energy, and more. ... Method Pros Cons; LCR Meter: Direct measurement of parameters: Requires …
The Andeen-Hagerling AH2700A Automatic Capacitance is used for direct measurements and is calibrated traceable to the SI, through a National Metrology Institute (NIST). IET Labs can also …
Jiaxuan Zou. School of Microelectronic, Xidian University, Xi''an, 710071 China. No.58 Research Institute, China Electronic Technology Group Corporation, Wuxi, 214035 China
The calibration method uses fused-silica standard capacitors of values 1 pF, 10 pF, and 100 pF that have been characterized for dissipation factor against a 0.5 pF cross capacitor, as well as …
Accurate calibration of capacitors that range in value from 0.01 μF to 100 μF over the frequency range from 100 Hz to 100 kHz is desired. There are several instruments available …