公开(公告)号：ITMI990458A1

公开(公告)日：2000-09-05

申请号：ITMI990458

申请日：1999-03-05

Applicant: ST MICROELECTRONICS SRL

Inventor： CLERICI GIANCARLO ,  TOMASINI LUCIANO

IPC: G05F3/16 ,  H03F20060101

Abstract: A fully differential amplifier, in other words one having differential inputs and outputs, is associated with a circuit to regulate the output voltage reference. This circuit contains a resistive divider connected between the output terminals of the differential amplifier, a diode between the intermediate connection of the divider and common bases of load transistors of the differential amplifier, and a current mirror having a first branch connected to a reference voltage generator and a second branch which forms a current generator connected between the common bases of the load transistors and ground. This provides an efficient feedback control system with low power consumption and takes up less space on an integrated circuit.