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ADA4841-2YCPZ-R7 Datasheet(PDF) 17 Page - Analog Devices |
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ADA4841-2YCPZ-R7 Datasheet(HTML) 17 Page - Analog Devices |
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17 / 21 page ![]() ADA4841-1/ADA4841-2 Rev. E | Page 16 of 20 The POWER DOWN pin is protected with ESD clamps, as shown in . Voltages beyond the power supplies cause these diodes to conduct. The guidelines for limiting the overload current in the input protection section should also be followed for the Figure 48 POWER DOWN pin. POWER-DOWN OPERATION Figure 48 shows the ADA4841-1 power-down circuitry. If the POWER DOWN pin is left unconnected, then the base of the input PNP transistor is pulled high through the internal pull-up resistor to the positive supply, and the part is turned on. Pulling the POWER DOWN pin approximately 1.7 V below the positive supply turns the part off, reducing the supply current to approximately 40 μA. VCC VEE POWER DOWN ESD ESD IBIAS TO AMPLIFIER BIAS Figure 48. POWER DOWN Circuit |
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