Output Variation Compensation of Bandgap Voltage Reference for Efficient Calibration Strategy

The voltage reference represents a very important stage in applications such RF system. Most bandgap voltage reference designer use bipolar junction transistors (BJT) to easily reduce the temperature dependence and supply voltage, other use an operational amplifiers (OP-AMP), which are generally very complex and may present undesirable parasite and high power consumption. This paper presents a approach for output variation compensation of bandgap voltage reference. The proposed technique is considered as an efficient calibration strategy for the BGR used to minimize the chip size and current consumption.