Microchip Technology recently introduced two new families of operational amplifiers featuring mCal Technology. These two new product families are 20 and 50MHz, CMOS operational amplifiers featuring mCal technology. mCal is an on-board calibration circuit that corrects the input offset error of the amplifier. This circuitry consists of an A/D converter, a reference, and an output DAC that feeds an offset correction factor back into the amplifier. This calibration occurs during power-up or based on the state of the calibration pin. This calibration circuitry enables low initial offset voltage and a way to minimize drift over time and temperature.