Patent ID: 8933684
Filing Date: 2015-01-13
Classification: G05F

Abstract:
1. A voltage generator, comprising: a first transistor, comprising a first terminal coupled to a voltage source, and a second terminal electrically connected to a third terminal; a second transistor, comprising a first terminal coupled to the voltage source, and a second terminal electrically connected to a third terminal; an operational amplifier, comprising a first input terminal coupled to the second terminal and the third terminal of the first transistor, a second input terminal coupled to the second terminal and the third terminal of the second transistor, and an output terminal; a capacitor, comprising a first terminal coupled to the output terminal of the operational amplifier, and a second terminal coupled to a ground end; a third transistor, comprising a first terminal coupled to the third terminal of the first transistor, and a second terminal coupled to the output terminal of the operational amplifier and the first terminal of the capacitor, and a third terminal; a fourth transistor, comprising a first terminal coupled to the third terminal of the second transistor, a second terminal coupled to the output terminal of the operational amplifier and the first terminal of the capacitor, and a third terminal coupled to the ground end; and a first resistor coupled between the third terminal of the third transistor and the ground end.