A precision ADC sampling system design

Introduction The high-energy photon source,which has been built in Huairou,Beijing,has high requirements on magnetic field dithering.Magnetic field dithering is mainly determined by the stability of the output current of the power supply.In order to ensure the stability of the output current of quadrupole magnet power supply,the power supply sampling control loop needs to be precisely designed.In this paper,a precision ADC sampling system based on internal temperature control is designed to carry out precise control of the sampling ADC.
Materials In this design,precise ADC chip is used to complete the precise sampling of the system.The precise sampling system contains a DAC system for high-speed settings.
Methods In order to verify the design of the system,high-precision quadrupole magnet power supply is used for measurement.
Conclusion The experimental results show that the temperature variation range of precision temperature control ADC system is ±0.1℃.By using the precise temperature control ADC system,the output current stability of the high-precision quadrupole magnet power supply is effectively improved.