【摘要】：設(shè)計了一種高電源抑制比(PSRR)、低溫漂的無電阻帶隙基準源。在傳統(tǒng)無電阻帶隙基準電壓源的基礎(chǔ)上引入反饋環(huán)路,實現(xiàn)了對電壓的箝制,減小了溝道長度調(diào)制效應和失調(diào)電壓,提高了帶隙基準源的PSRR。引入正溫度補償電路,減小了帶隙基準源的溫度系數(shù)。采用TSMC 0.18μm CMOS工藝對電路進行了仿真。結(jié)果表明,在3 V工作電壓下,在低頻下帶隙基準源的PSRR為-65 d B,在-25℃~125℃溫度范圍內(nèi)的溫度系數(shù)為3.72×10~(-5)/℃。
[Abstract]:A resistive bandgap reference source with high power suppression ratio (PSRR),) low temperature drift is designed. Based on the traditional resistive band-gap reference source, feedback loop is introduced to realize the clamping of the voltage, reduce the channel length modulation effect and offset voltage, and improve the PSRR. of the bandgap reference source. A positive temperature compensation circuit is introduced to reduce the temperature coefficient of the bandgap reference. The circuit is simulated by TSMC 0.18 渭 m CMOS process. The results show that at 3 V operating voltage, the PSRR of the bandgap reference is -65 dB at low frequency, and the temperature coefficient is 3.72 脳 10 ~ (-5) / 鈩，

本文編號：2354448