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AD795 Datasheet(PDF) 11 Page - Analog Devices |
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AD795 Datasheet(HTML) 11 Page - Analog Devices |
11 / 20 page AD795 Rev. C | Page 11 of 20 MINIMIZING INPUT CURRENT The AD795 is guaranteed to 1 pA maximum input current with ±15 V supply voltage at room temperature. Careful atten- tion to how the amplifier is used is necessary to maintain this performance. The amplifier’s operating temperature should be kept as low as possible. Like other JFET input amplifiers, the AD795’s input current doubles for every 10°C rise in junction temperature (illustrated in Figure 9). On-chip power dissipation raises the device operating temperature, causing an increase in input current. Reducing supply voltage to cut power dissipation reduces the AD795’s input current (see Figure 7). Heavy output loads can also increase junction temperature; maintaining a minimum load resistance of 10 kΩ is recommended. |
Número de pieza similar - AD795_09 |
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Descripción similar - AD795_09 |
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