SUPER VOLTAGE CONVERTER (ICL 7600S)

The ICL7660S performs supply voltage conversion from positive to negative for an input range of 1.5V to 12V, resulting in complementary output voltages of -1.5V to - 12V.

Figure 2 : Super Voltage Converter ICL 7660S

To run this both op-amp and voltage comparator, it need to supply the + voltage and – voltage, so this super voltage converter is the best and suitable IC (integrated controlled) to convert the input that is +12 volt from the power supply to make their own output that is -12 volt to supply for the both IC that is operational amplifier LM 741 and voltage comparator LM311.