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ADL8124ACPZN-R7 数据表(PDF) 25 Page - Analog Devices |
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ADL8124ACPZN-R7 数据表(HTML) 25 Page - Analog Devices |
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25 / 29 page ![]() Data Sheet ADL8124 THEORY OF OPERATION analog.com Rev. 0 | 25 of 29 The ADL8124 is a wideband LNA with integrated AC-coupling capacitors, a bias inductor, a temperature sensor, and an enable or disable function. Figure 99 shows the simplified architecture of the ADL8124. The ADL8124 has AC-coupled, single-ended input and output ports with impedances that are nominally equal to 50Ω over the 1GHz to 20GHz frequency range. No external matching components are required. The value of the resistor connected between VDD and RBIAS controls the IDQ. The ADL8124 contains an integrated temperature sensor. The temperature sensor is biased internally through the VDD pin. The voltage that is proportional to the device temperature can be meas- ured on the VTEMP pin. The ADL8124 also has an enable or disable function. By pulling the VENBL pin high or low, the ADL8124 can be enabled or disabled, respectively. Figure 99. Simplified Architecture |
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