AD976 数据手册DataSheet下载
... quantization levels. The more levels, the lower the quantization noise. The theoretical S/(N+D) for a sine wave input signal can be calculated using the following: S/(N+D) = (6.02N + 1.76) dB ...
... quantization levels. The more levels, the lower the quantization noise. The theoretical S/(N+D) for a sine wave input signal can be calculated using the following: S/(N+D) = (6.02N + 1.76) dB ...
A Robust -40 to 120°C All-Digital True Random Number Generator
... different paths and hence accumulate device delay mismatch and noise, causing one edge to overtake the other and collapsing the oscillation. Therefore, the number of cycles until collapse depends on both systematic delay mismatch and random noise. The distribution of collapse time depends on the rel ...
... different paths and hence accumulate device delay mismatch and noise, causing one edge to overtake the other and collapsing the oscillation. Therefore, the number of cycles until collapse depends on both systematic delay mismatch and random noise. The distribution of collapse time depends on the rel ...
Full-Text PDF
... scheme [12–14] for CMOS TDI image sensors. In the charge-domain accumulation scheme, the noiseless accumulation enables good SNR. However, the charge transfer efficiency and full well capacity, which strongly depend on process, limit its momentum of development [6,7]. With respect to the analog-doma ...
... scheme [12–14] for CMOS TDI image sensors. In the charge-domain accumulation scheme, the noiseless accumulation enables good SNR. However, the charge transfer efficiency and full well capacity, which strongly depend on process, limit its momentum of development [6,7]. With respect to the analog-doma ...
Circuits and Techniques for High-Resolution Measurement of On
... where represents the separation of the two noise samples in returns the expected value of the random process. time and The Fourier transform of the autocorrelation gives the power spectral density (PSD) of the noise process. For example, as shown in Fig. 2(a), a white, zero mean noise process has a ...
... where represents the separation of the two noise samples in returns the expected value of the random process. time and The Fourier transform of the autocorrelation gives the power spectral density (PSD) of the noise process. For example, as shown in Fig. 2(a), a white, zero mean noise process has a ...
Capacitor Self
... measure a noise voltage as high as 0.1 1V / Hz even if the lightning is over Brazil (I am serious!). If you have a system with a bandwidth of 4 kHz, the total noise voltage can be as high as 6-60 µV. Between 30 MHz and 800 MHz, Galactic noise dominates our world outside cities and suburban areas. ...
... measure a noise voltage as high as 0.1 1V / Hz even if the lightning is over Brazil (I am serious!). If you have a system with a bandwidth of 4 kHz, the total noise voltage can be as high as 6-60 µV. Between 30 MHz and 800 MHz, Galactic noise dominates our world outside cities and suburban areas. ...
Diapositive 1 - CEA-Irfu
... to both analog readout and large detector capacitances: the APV0.25 designed for CMS could be an option (under evaluation): + nearly a perfect chip + we already use it. ...
... to both analog readout and large detector capacitances: the APV0.25 designed for CMS could be an option (under evaluation): + nearly a perfect chip + we already use it. ...
Selecting A/D Converters
... lose information in the audio frequency range up to 5kHz. This requires a medium accuracy (8-bit) A/D with a cycle time of 100µs or less. In this application the integrating type is not fast enough, so it is necessary to use a slow (for this approach) successive approximation design. These examples ...
... lose information in the audio frequency range up to 5kHz. This requires a medium accuracy (8-bit) A/D with a cycle time of 100µs or less. In this application the integrating type is not fast enough, so it is necessary to use a slow (for this approach) successive approximation design. These examples ...
optimizing medical image contrast, detail and noise in
... One of the major advantages of digital images is the ability to adjust and optimize the contrast for maximum visibility within the various anatomical regions and tissue compositions and characteristics. This is possible because digital image processing can be performed between the acquired and recor ...
... One of the major advantages of digital images is the ability to adjust and optimize the contrast for maximum visibility within the various anatomical regions and tissue compositions and characteristics. This is possible because digital image processing can be performed between the acquired and recor ...
John H. Scofield, Rev. Sci. Instrum. 58
... the "eye") near a source resistance re= 1MΩ and a frequency of 100 Hz. An impedance matching transformer with turns ratio (N2/N1)2 = re/r may be used to shift the operation of the PAR 113 with a 100 Ω bridge to the 1MΩ horizontal line (see Figure 5); these data give the lower dashed curve in Figure ...
... the "eye") near a source resistance re= 1MΩ and a frequency of 100 Hz. An impedance matching transformer with turns ratio (N2/N1)2 = re/r may be used to shift the operation of the PAR 113 with a 100 Ω bridge to the 1MΩ horizontal line (see Figure 5); these data give the lower dashed curve in Figure ...
B. Front end electronics - GAE
... At least four different techniques can be used to read the signal of the photo-detectors of such experiments. In the three first readout scheme the readout follow the decision based on trigger condition. The signal is compared to a threshold by a discriminator. The discriminator output is sent to a ...
... At least four different techniques can be used to read the signal of the photo-detectors of such experiments. In the three first readout scheme the readout follow the decision based on trigger condition. The signal is compared to a threshold by a discriminator. The discriminator output is sent to a ...
Pill-ID: Matching and Retrieval of Drug Pill Images
... The original SIFT descriptor (Lowe, 2004) construction consisted of five steps: (i) smoothing, (ii) gradient orientation & magnitude calculation, (iii) Gaussian weighting, (iv) tri-linear interpolation, and (v) truncation. We have empirically determined that steps (i) and (iii) are redundant in gener ...
... The original SIFT descriptor (Lowe, 2004) construction consisted of five steps: (i) smoothing, (ii) gradient orientation & magnitude calculation, (iii) Gaussian weighting, (iv) tri-linear interpolation, and (v) truncation. We have empirically determined that steps (i) and (iii) are redundant in gener ...
Quantum Random Number Generation on a Mobile Phone
... typically been based on specialized hardware, such as single-photon sources and detectors [15–17] or homodyne detection [18,19], photon-number resolving detectors [20,21], parametric oscillators [22], or Raman scattering [23,24]. Although not explicitly quantum, very fast random number generators ha ...
... typically been based on specialized hardware, such as single-photon sources and detectors [15–17] or homodyne detection [18,19], photon-number resolving detectors [20,21], parametric oscillators [22], or Raman scattering [23,24]. Although not explicitly quantum, very fast random number generators ha ...
A/D Converter Specifications (Cont.)
... Amplification: Rarely does the transducer produce the voltage or current needed by the A/D. The amplifier is designed so that the full-scale signal from the analog results in a full-scale signal to the A/D. Bandwidth limiting: The signal conditioning provides a low-pass filter to limit the range of ...
... Amplification: Rarely does the transducer produce the voltage or current needed by the A/D. The amplifier is designed so that the full-scale signal from the analog results in a full-scale signal to the A/D. Bandwidth limiting: The signal conditioning provides a low-pass filter to limit the range of ...
Noise Control in Strain Gage Measurements
... noise. Magnetic shields operate on a different principle, and serve to bend or shunt the magnetic field around the conductor rather than eliminate it. Magnetic shields are made from high-permeability materials such as iron and other ferro-magnetic metals. At the relatively low 50/60-Hz power line fre ...
... noise. Magnetic shields operate on a different principle, and serve to bend or shunt the magnetic field around the conductor rather than eliminate it. Magnetic shields are made from high-permeability materials such as iron and other ferro-magnetic metals. At the relatively low 50/60-Hz power line fre ...
6_2_Oscilloscope Handbook
... Next, the analog-to-digital converter (ADC) in the acquisition system samples the signal at discrete points in time and converts the signal's voltage at these points to digital values called sample points. The horizontal system's sample clock determines how often the ADC takes a sample. The rate at ...
... Next, the analog-to-digital converter (ADC) in the acquisition system samples the signal at discrete points in time and converts the signal's voltage at these points to digital values called sample points. The horizontal system's sample clock determines how often the ADC takes a sample. The rate at ...
A/D Converter Specifications (Cont.)
... Amplification: Rarely does the transducer produce the voltage or current needed by the A/D. The amplifier is designed so that the full-scale signal from the analog results in a full-scale signal to the A/D. Bandwidth limiting: The signal conditioning provides a low-pass filter to limit the range of ...
... Amplification: Rarely does the transducer produce the voltage or current needed by the A/D. The amplifier is designed so that the full-scale signal from the analog results in a full-scale signal to the A/D. Bandwidth limiting: The signal conditioning provides a low-pass filter to limit the range of ...
Phase Jitter Application Note
... Figure 12: Standard Phase Noise Test Set Up. For this test set up, the reference clock is an ovenized crystal oscillator (OCXO), which is approximately an ideal sinewave when compared to a VCXO, while the other is the VCXO (DUT). The frequency of the two devices must be close enough to allow an exac ...
... Figure 12: Standard Phase Noise Test Set Up. For this test set up, the reference clock is an ovenized crystal oscillator (OCXO), which is approximately an ideal sinewave when compared to a VCXO, while the other is the VCXO (DUT). The frequency of the two devices must be close enough to allow an exac ...
Electromagnetic Noise Simulation Technology for
... In order to conform to the EMC Directive, the intensity (level) of conduction noise radiated outside through cables must be measured and evaluated over a range from 150 kHz to 300 MHz as noise voltage (noise terminal voltage) at a line impedance stabilization network (LISN) that simulates a power sy ...
... In order to conform to the EMC Directive, the intensity (level) of conduction noise radiated outside through cables must be measured and evaluated over a range from 150 kHz to 300 MHz as noise voltage (noise terminal voltage) at a line impedance stabilization network (LISN) that simulates a power sy ...
2 nR , n
... • Given a set {ˆX(w)} of reconstruction points, the distortion is minimized by mapping a source random variable X to the representation ˆX(w) that is closest to it. The set of regions of defined by this mapping is called a Voronoi or Dirichlet partition defined by the reconstruction points. • The ...
... • Given a set {ˆX(w)} of reconstruction points, the distortion is minimized by mapping a source random variable X to the representation ˆX(w) that is closest to it. The set of regions of defined by this mapping is called a Voronoi or Dirichlet partition defined by the reconstruction points. • The ...
Dither
Dither is an intentionally applied form of noise used to randomize quantization error, preventing large-scale patterns such as color banding in images. Dither is routinely used in processing of both digital audio and video data, and is often one of the last stages of ""mastering"" audio to a CD.A typical use of dither is converting a greyscale image to black and white, such that the density of black dots in the new image approximates the average grey level in the original.