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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADA4097-1BUJZ-R5 датащи(PDF) 26 Page - Analog Devices |
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ADA4097-1BUJZ-R5 датащи(HTML) 26 Page - Analog Devices |
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26 / 31 page  Data Sheet ADA4097-1/ADA4097-2 APPLICATIONS INFORMATION analog.com Rev. A | 26 of 31 ground plane must have minimal loop area to keep inductance to a minimum. ESD PROTECTION WHEN POWERED ICs react to ESD strikes differently when unpowered vs. powered, which falls under IEC-61000-4-2 standards (see the Absolute Max- imum Ratings section). A device that performs well under HBM conditions can perform poorly under International Electrotechnical Commission (IEC) conditions. The ADA4097-1/ADA4097-2 are thoroughly abused with ESD strikes under IEC conditions to create a front-end circuit protection scheme that protects the devices if subjected to ESD strikes. Figure 65 and Figure 66 show two different protection schemes that extend the protection of the ADA4097-1/ADA4097-2 to ±8 kV ESD strikes. Consider the following when selecting components: ► A component size of 0805 or larger to reduce chance of arc-over ► Pulse withstanding, thick film resistors ► C0G MLCC with a minimum rating of 100 V ► Bidirectional, transient voltage suppression (TVS) diodes In the circuit shown in Figure 65, R1 is a 220 Ω, Panasonic, 0805, ERJ-P6 series, and C1 is a 100 pF, Yageo, 0805, 100 V, C0G/NPO. Figure 65. ESD Protection Circuit (RC Network) In the circuit shown in Figure 66, R1 is a 220 Ω, Panasonic, 0805, ERJ-P6 series, and D1 is a Bourns CDSOD323-T36SC. An ESD varistor can be considered for D1. For more information on system level ESD considerations, see the technical article, When Good Electrons Go Bad: How to Protect Your Analog Front End, on the Analog Devices, Inc., website. Figure 66. ESD Protection Circuit (R-TVS Network) RELATED PRODUCTS Table 10 describes several alternative precision amplifiers that can also be considered for certain applications. Table 10. ADA4097-1/ADA4097-2 Related Products Model VOS (µV) IB (nA) GBP (kHz) en (nV/√Hz) ISY (μA) Common-Mode Input Range (V) ADA4097-1 60 0.3 130 53 33 −VS to −VS + 70 ADA4097-2 60 0.3 130 53 33 −VS to −VS + 70 ADA4098-1 30 0.7 1000 17 165 −VS to −VS + 70 ADA4098-2 30 0.7 1000 17 165 −VS to −VS + 70 ADA4099-1 30 10 8000 7 1500 −VS to −VS + 70 ADA4099-2 30 10 8000 7 1500 −VS to −VS + 70 ADA4077-1 35 1 3900 7 500 −VS to +VS LT6015 50 5 3200 18 335 −VS to −VS + 76 LT6014 60 0.4 1600 9.5 165 −VS to +VS LT1494 375 1 2.7 185 1.5 −VS to −VS + 36 LT1490A 500 8 180 50 55 −VS to −VS + 44 |
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