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AD8024 データシート(PDF) 10 Page - Analog Devices |
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AD8024 データシート(HTML) 10 Page - Analog Devices |
10 / 12 page AD8024 –10– REV. C Overload Recovery The most important overload conditions are: Input Common-Mode Voltage Overdrive Output Voltage Overdrive Input Current Overdrive. When configured for a low closed-loop gain, the AD8024 recovers quickly from an input common-mode voltage over- drive; typically in <25 ns. When configured for a higher gain and overloaded at the output, recovery from an output voltage overdrive is also short; approxi- mately 55 ns (see Figure 5). For higher overdrive, the response is somewhat slower. For 100% overdrive, the recovery time is substantially longer. When configured for a high noninverting gain, a high input over- drive can result in a large current into the input stage. Although this current is internally limited to approximately 30 mA, its effect on the total power dissipation may be significant. See also the warning under Maximum Power Dissipation. VOUT VIN 1V 5V 50ns Figure 5. 15% Overload Recovery, Gain = +10 (RFB = 400 Ω, RL = 1 kΩ, VS = ±7.5 V) Disable Mode Operation When the Disable pin is tied to DGND, all amplifiers are opera- tional, in the enabled state. When the voltage on the Disable pin is raised to 1.6 V or more above DGND, all amplifiers are in the disabled, powered-down state. In this condition, the DISABLE pin sources approximately 0.1 µA, the total quiescent current is reduced to approximately 500 µA, all outputs are in a high impedance state, and there is a high level of isolation from inputs to outputs. The output impedance in the disabled mode is the equivalent of all external resistors, seen from the output pin, in parallel with the total disabled output impedance of the amplifier, typically 20 pF. The input stages of the AD8024 include protection from large differential input voltages that may be present in the disabled mode. Internal clamps limit this voltage to 1.5 V. The high input- to-output isolation is maintained for voltages below this limit. |
同様の部品番号 - AD8024 |
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同様の説明 - AD8024 |
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