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Original question:

lmh6505

LMH6505: Output issue

Lidong Yu
Intellectual 1756 points
Part Number: LMH6505

The circuit is built according to the typical circuit of lmh6505 datsheet. The positive and negative 5V system supplies power, and the 1kHz 0.7V sine wave signal is input. The control voltage signal VG changes from 0-1v, and the maximum amplitude of the output signal is only 20mV, which can not achieve the gain adjustment change of - 80-10db.