A double power supply network design for muti-channel transmitter based on HART

As a kind of field bus, HART protocol is widely used in industrial control system. With the complex muti-parameter sensors emerging, a HART transmitter is needed to achieve muti-parameter measurement and calculation. In order to adjust to the demand for industrial applications, the universal transmitter based on HART protocol is designed to meet the muti-parameter measurements. In circuit design, a double power supply network is used to reduce the power consumption of the transmitter system.