Apparatuses, methods, and current generators that generate current are described. An example apparatus includes a current source configured to provide a current. The current source may be coupled to a voltage source via a transistor. The transistor may be configured to provide the voltage source to the current source based on a voltage of a gate of the transistor. The example apparatus may further include an amplifier configured to provide a voltage to the gate of the transistor based on a voltage differential between two inputs. The voltage differential between the two inputs may adjust due to process, voltage or temperature changes such that the current provided by the current source remains constant.