No-operational-amplifier band-gap reference voltage source with wide power supply range and high power supply rejection ratio

The invention discloses an operational-amplifier-free band-gap reference voltage source with a wide power supply range and a high power supply rejection ratio, and relates to the technical field of integrated circuits, and the operational-amplifier-free band-gap reference voltage source comprises an operational-amplifier-free band-gap reference voltage source core temperature compensation circuit which is a self-bias structure without an operational amplifier circuit and is used for generating and outputting reference voltage; the pre-voltage-stabilizing circuit is used for suppressing power supply noise and providing a power supply for the operational-amplifier-free band-gap reference voltage source core temperature compensation circuit; the starting circuit is used for starting the operational amplifier-free band-gap reference voltage source core temperature compensation circuit and the pre-voltage-stabilizing circuit; and the PTAT current generating circuit is used for generating a positive temperature coe