HA5020 Operational Amplifier Feedback Resistor Selection HA5020 Operational Amplifier Feedback Resistor Selection Application Note January 1995 AN9305 Optimum AC performance of current feedback ampliers in gain peaking particularly at low gains (intuitively, CS is in general and of the HA-5020 in particular depends upon parallel with RG causing the gain as determined by the feed- careful selection of the feedback resistor, RF. The benet of back network to increase with frequency). higher usable bandwidth (compared with conventional ……