Abstract: An integrated circuit, including a resistor having multiple, series-connected resistor segments formed over multiple tubs of semiconductor material of a first polarity in a semiconductor substrate of the opposite polarity. The resistor is implemented with multiple bootstrapping in the sense that all tubs are coupled to a node of the circuit whose potential changes, in response to a changing input signal, in a direction so as to pull the potential at one end of the resistor in a desired direction. Each resistor segment can be formed over a different one of the tubs, or there are more segments than tubs (e.g., more than one segment formed over one of the tubs or at least one segment having no tub under it). In preferred embodiments, the circuit is a high-speed cascode amplifier (or other amplifier), the resistor is a gain-setting resistor coupled to the top rail, and the tubs are coupled to the amplifier's output.