400MHZ Differential Amplifier Circuit

Published:2011/7/13 6:31:00 Author:Sue | Keyword: Differential, Amplifier | From:SeekIC

In the figure, it is the 400MHz differential amplifier. The brandbroad operational transconductance amplifier, the buffer OPA660 can compose differential amplifier with a brand width of 400MHz. The high speed buffer amplifier BUF601 serve as buffer output stage. The circuit gain G=R9/(R8+1/gm). In the formula, gm is OPA660 transconductance's transconductance gain. When R16=650Ω, OPA660's quiescent current is about 10mA and the transconductance is about 0.08A/V(see the figure 1.112).



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