BACK BIAS VOLTAGE GENERATOR

摘要

The generator with a level detecting circuit determining the clamping level being insensitive to the power supply comprises an oscillator (10) for generating pulse, a buffer (20) generating pulse with power supply level, a charge pump circuit (30) generating the back-bias voltage, and a back-bias voltage level detector (40) maintaining the back-bias voltage insensitive to variation of the power supply. The generator fabricated on the semiconductor chip reduces the junction breakdown and leakage current because the reverse bias voltage is lower than conventional one.