Patent ID: 8125262

Claim:
An integrator circuit, comprising: a pre-amplifier stage having a first input for receiving a reduced voltage, a second input for a first reference voltage, and an input for a first power supply voltage; a multi-path amplifier module having a first amplification path connected among a second reference voltage, an input of the integrator circuit, and an output of the integrator circuit, a second amplification path connected between the pre-amplifier stage and the output of the integrator circuit, and an input for a second power supply voltage, wherein the second power supply voltage is greater than the first supply power voltage, and an output connected to the output of the integrator circuit; a level-shifting capacitor connected to the input of the integrator circuit, and to the first input of the pre-amplifier stage, wherein the level-shifting capacitor provides the reduced voltage to the pre-amplifier stage; and a feedback capacitor connected between the input and the output of the integrator circuit.