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Current feedback amplifier circuit of broadband transconduct

2015-01-04 20:05  
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Current feedback amplifier circuit of broadband transconductance operational amplifier and buffer OPA660
Signal V1 is input to pin 3 of OPA660 by 47Ω resistor and output from pin 6 after being amplified by the internal +1 amplifier; at the same time, pin 2 of OPA660 gets feedback from pin 6 by 200Ω resistor to constitute the current feedback amplifier. The current feedback amplifier can be used to stabilize static operating point, expand broadband and reduce the output distortion of amplifier. Circuit gain G = 1 + R4/R5 = 10.