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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADA4522-4ARUZ-R7 датащи(PDF) 31 Page - Analog Devices |
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ADA4522-4ARUZ-R7 датащи(HTML) 31 Page - Analog Devices |
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31 / 33 page  Data Sheet ADA4522-1/ADA4522-2/ADA4522-4 APPLICATIONS INFORMATION analog.com Rev. G | 31 of 33 total noise to 7.2 nV/√Hz. For this noise reason, it is recommended to avoid using large source resistance. Unity Gain Follower with Large Source Resistance When the ADA4522-1/ADA4522-2/ADA4522-4 are configured in a unity-gain follower configuration with a large source resistance and slow power supply ramp rate, the amplifier output may rail to the positive supply. Figure 89. Insert RF When Large RS is Used Workaround To avoid the amplifier output railing to the positive supply, imple- ment one of the following actions (see Table 11 and Figure 89): ► Reduce the value of the source resistance (RS). ► Insert a feedback resistor (RF). Table 11. Amplifier Output Railing Workaround Recommendations Condition Recommendation 1.5 V ≤ VSY − VIN < 2.5 V RF = 200 Ω or RF ≥ 50 RS, whichever is greater 2.5 V ≤ VSY − VIN < 3.5 V RS ≤ 200 Ω or RF ≥ 2 RS VSY − VIN ≥ 3.5 V RS ≤ 500 Ω or RF ≥ 0.5 RS |
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