Design of a high PSR reference
Bing Yang · Electronic Design Engineering · 2011
Aiming at the problems of low PSR(Power Supply Rejection) and low output voltage of a traditional reference,by using a combination of LDO and bandgap reference and BCD process,a high PSR bandgap reference with high reference voltage is got.The low frequency PSR of the 1.186V output voltage is-145dB,and the biggest PSR is-36dB in the frequency range of 0~1GHz.The temperature coefficient of the 1.186V is 7.5ppm/℃ in the temperature range of-50~150℃.