The invention relates to an implementation
system of a low-
voltage reference source. The implementation
system solves the existing problem of stripe interference mixed in an image output by an
image sensor caused by the facts that low-
voltage reference sources of lower than 1.2V are small in variety and high in
internal resistance, superimposed interference for burrs is easy on reference
voltage when the capacitive load of a switch is connected. The implementation
system comprises a reference source, a resistance voltage division circuit, a first RC passive low-pass filtering circuit, a power supply, a second RC passive low-pass filtering circuit, an active low-pass filtering circuit consisting of an
operational amplifier, serially connected resistors, a high-capacity
ceramic capacitor and an
image sensor. The implementation system uses a topological structure that the
operational amplifier follows after voltage division of an existing high-
voltage reference source, the load capacitors of the switch inside the high-capacity
ceramic capacitor and the
image sensor are used to be connected in parallel to reduce the fluctuation of reference voltage, and external disturbance is reduced by using the low-pass filtering circuit.