Total dose induced bias current variation in the LM124 operational amplifier with Different Bias

Total dose dependence of bias current in the linear operational amplifier LM124 with different bias are presented. The experimental results show that the bias currents in the LM124 with powered bias are significant affected by oxide trapped charges; furthermore, the bias currents in the low dose rate are more affected by the interface state near Si/SiO2. These results can be used for design and hardness assurance.