Fig. 1. Typical bias circuits for the operational amplifiers and voltage reference

Fig. 2. Variations of the input bias current and input offset voltage of two operational amplifiers with the total ionizing dose

Fig. 3. Schematic diagrams of the input structure of general-purpose operational amplifier，input structure of precision operational amplifier， and base current compensation circuit

Fig. 4. Circuit diagrams of the basic current mirror and Wilson current mirror

Fig. 5. Variation of the static current of the operational amplifier with the total ionization dose

Fig. 6. Principle of the voltage reference

Fig. 7. Relationships between the reference output voltage，static current and the total ionizing dose