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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADL8121ACPZN-R7 датащи(PDF) 21 Page - Analog Devices |
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ADL8121ACPZN-R7 датащи(HTML) 21 Page - Analog Devices |
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21 / 22 page  Data Sheet ADL8121 USING RBIAS TO ENABLE AND DISABLE ADL8121 analog.com Rev. 0 | 21 of 22 By attaching a single-pole, double throw (SPDT) switch to the RBIAS pin, an enable and disable circuit can be implemented as shown in Figure 82. The ADG719 CMOS switch is used to connect the RBIAS resistor either to supply or ground. When the RBIAS resistor is connected to ground, the overall current consumption reduces to 1.0 mA with no RF signal present and 4.0 mA when the RF input level is –10 dBm. Figure 83 and Figure 84 show plots of the turn on and the turn off response time of the RF output envelope when the IN pin of the ADG719 is pulsed. Figure 82. Fast Enable and Disable Using a 0 V to 5 V Pulse on the RBIAS Resistor Figure 83. Turn-On Response Time of the RF Output (RFOUT) Envelope When IN Pin of the ADG719 Is Pulsed Figure 84. Turn-Off Response Time of the RFOUT Envelope When IN Pin of the ADG719 Is Pulsed |
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