JFET current mirror and voltage level shifting apparatus

摘要: A JFET current mirror is employed in the voltage level shifting section of an operational amplifier. The includes a first and second coupled at their gates for conducting I1 I2 respectively. gate third connected to drain source by plurality diodes JFET. Current flowing through produces drop across sufficient bias into saturation so that will track I1. fixed resistance R path predetermined shift provided constant. Therefore, applied one terminal shifted with respect other R. output then internal amplifier buffer