AD8368ACP

ANALOG DEVICES  AD8368ACP  芯片, 可变增益放大器, AGC, 800MHZ, 24LFCSP

The is a 800MHz linear-in-dB Variable Gain Amplifier VGA with AGC detector. Its excellent gain range, conformance and flatness are attributed to the Analog Devices, Inc. X-AMP® architecture, an innovative technique for implementing high performance variable gain control. The gain range of -12 to +22dB is scaled accurately to 37.5dB/V with excellent conformance error. The AD8368 has a 3dB bandwidth of 800MHz that is nominally independent of gain setting. At 140MHz, the OIP3 is 33dBm at maximum gain. The output noise floor is -143dBm/Hz, which corresponds to a 9.5dB noise figure at maximum gain. The single-ended input and output impedances are nominally 50R. The gain of the AD8368 can be configured to be an increasing or decreasing function of the gain control voltage depending on whether the MODE pin is pulled to the positive supply or to ground, respectively. When MODE is pulled high, the AD8368 operates as a typical VGA with increasing gain.

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37.5dB/V Linear-in-dB scaling

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Integrated RMS detector

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16dBm at 140MHz P1dB

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33dBm at 140MHz Output IP3

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9.5dB at 140MHz Noise figure at maximum gain

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50R Input and output impedances