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ADUM7703 Datasheet(PDF) 15 Page - Analog Devices |
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ADUM7703 Datasheet(HTML) 15 Page - Analog Devices |
15 / 22 page ![]() Data Sheet ADuM7703 Rev. 0 | Page 15 of 22 Noise Free Code Resolution Noise free code resolution represents the resolution in bits for which there is no code flicker. The noise free code resolution for an N-bit converter is defined as Noise Free Code Resolution (Bits) = log2(2N/Peak-to-Peak Noise) The peak-to-peak noise in LSBs is measured with VIN+ = VIN− = 0 V. Common-Mode Rejection Ratio (CMRR) CMRR is the ratio of the power in the ADC output at ±250 mV frequency, f, to the power of a +250 mV p-p sine wave applied to the common-mode voltage of VIN+ and VIN− of frequency, fS, as CMRR (dB) = 10 log(Pf/PfS) where: Pf is the power at frequency, f, in the ADC output. PfS is the power at frequency, fS, in the ADC output. Power Supply Rejection Ratio (PSRR) Variations in power supply affect the full-scale transition but not the linearity of the converter. PSRR is the maximum change in the specified full-scale (±250 mV) transition point due to a change in power supply voltage from the nominal value. |
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