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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AD7658BSTZ датащи(PDF) 19 Page - Analog Devices |
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AD7658BSTZ датащи(HTML) 19 Page - Analog Devices |
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19 / 32 page  Data Sheet AD7656/AD7657/AD7658 Rev. D | Page 19 of 32 Figure 19 shows the power supply rejection ratio vs. supply ripple frequency for the AD7656/AD7657/AD7658. The power supply rejection ratio is defined as the ratio of the power in the ADC output at full-scale frequency, f, to the power of a 200 mV p-p sine wave applied to the ADC’s VDD and VSS supplies of frequency fS PSRR (dB) = 10 log (Pf/PfS) where: Pf is equal to the power at frequency f in the ADC output. PfS is equal to the power at frequency fS coupled onto the VDD and VSS supplies. Channel-to-Channel Isolation Channel-to-channel isolation is a measure of the level of crosstalk between any two channels. It is measured by applying a full-scale, 100 kHz sine wave signal to all unselected input channels and determining the degree to which the signal attenuates in the selected channel with a 30 kHz signal. % FSR %FSR is calculated using the full theoretical span of the ADC. |
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