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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADA4625-1ARDZ-R7 датащи(PDF) 30 Page - Analog Devices |
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ADA4625-1ARDZ-R7 датащи(HTML) 30 Page - Analog Devices |
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30 / 35 page  ADA4625-1/ADA4625-2 Data Sheet Rev. A | Page 30 of 35 Table 8 shows the noise sources and estimated total output noise for the photodiode amplifier with CF = 2.2 pF and CF =3.9 pF, respectively. Use the Analog Devices Analog Photodiode Wizard to design a transimpedance amplifier circuit to interface with a photodiode. Table 8. RMS Noise Contributions of the Photodiode Preamplifier Noise Contributor Expression RMS Noise (µV)1 CF = 2.2 pF CF = 3.9 pF RF π P F f kTR 2 4 where: k is Boltzmann’s constant (1.38 × 10−23 J/K). T is the temperature in Kelvin (K). 43.2 32.5 Current Noise, Vni, AMP p F N f R i 2 π 0.34 0.25 Voltage Noise, Vnv, AMP GBP F IN N f C C e 2 1 π + 61.6 47.7 Total Noise 2 2 2 , , F R AMP nv AMP nv V V V + + 75.2 57.7 1 RMS noise with RF = 49.9 kΩ, CIN = CCM + CDM = 19.9 pF, CD = 5 pF, iN = 4.5 fA/√Hz, and eN =3.3 nV/√Hz. |
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