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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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TS4890IST Datenblatt(PDF) 41 Page - STMicroelectronics |
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TS4890IST Datenblatt(HTML) 41 Page - STMicroelectronics |
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41 / 46 page  DocID8396 Rev 7 41/46 TS4890 Application information 46 Figure 110. PSRR measurement schematic Principle of operation • We fixed the DC voltage supply (Vcc) • We fixed the AC sinusoidal ripple voltage (Vripple) • No bypass capacitor Cs is used The PSRR value for each frequency is: Remark: The measure of the Rms voltage is not an Rms selective measure but a full range (2 Hz to 125 kHz) Rms measure. It means that we measure the effective Rms signal + the noise. PSRR dB () 20 Log 10 × Rms V ripple () Rms Vs - Vs + – () ------------------------------------------- = |
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