With a reference current source using a depression NMOS transistor, the circuit activates instantly when the power is turned on and generates reference voltage with NMOS bias transistor.
Source of reference voltage to be supplied to the regulating amplifier.
Experience & Performance
Used in low power microcomputers.
Layout wires as GND shielding to output reference voltage while paying attention not to cause crosstalk with other signals. Main transistors have their current running in the same direction to improve the currents precision. Making geometry consistent enhances the characteristics.