The Design of High-precision Reference Voltage Source
Chen Su-qin · Journal of Suzhou University · 2012
According to the related theory,a bandgap voltage source circuit benchmark was designed,which includes the bandgap voltage source circuit core part benchmark,operation amplifier offset circuit and startup circuit.After the completion of the circuit design,0.18 m CSMC-HJ N trap CMOS process model library and simulation software were used to simulate the circuit.The working voltage was 1.8 V,and the working temperature was between-20℃ to 100℃.The simulation results show that the design of the temperature coefficient is 6.1 ppm/℃.Along with the change of the power supply voltage,the output voltage change is just 0.005 mV/V.