图目录 图1-1系统结构… …6 图2-1带隙基准电压源电路拓扑结构…9 图2-2带隙基准电压源核心电路…。 10 图2-3典型带隙基准电压源电路的温度系数…10 图2-4带隙基准电压源电路原理图… 11 图2-5数字控制带隙基准电压源原理图…12 图2-6可控PNP晶体管组基本单元… 13 图2-7简单的差分放大器…13 图2-8引起带隙基准电压源电路误差的因素… …14 图2-9MOS管的变化对输出参考电压温度曲线的影响… …15 图2-10电阻的变化对输出参考电压温度曲线的影响… …15 图2-11双极型晶体管的变化对输出参考电压温度曲线的影响…16 图2-12温度曲线… …16 图2-3带隙基准电压源的等效噪声电路… …18 图2-14差分放大器的噪声源… 20 图2-15带隙基准电压源电路图… 21 图2-16误差放大器电路结构… 21 图2-17RC滤波器频率特性 22 图2-18RC低通滤波器对PSR的影响… 23 图2-19RC低通滤波器对噪声的影响… 23 图2-20电源变化与温度曲线的关系… 25 图2-21VoD为3.3V时工艺角与温度曲线的关系… 25 图2-22V0加为2.1V时工艺角与温度曲线的关系… … 26 图2-23电源变化与环路交流特性的关系… 27 图2-24电源变化与单位增益带宽的关系… 27 图2-25电源变化与相位裕度的关系… 28 图2-26VoD为2.1V时工艺角与环路交流特性的关系 28 图2-276加为3.3V时工艺角与环路交流特性的关系…29 图2-28电源变化与PSR的关系 30 图2-29bD为3.3V时工艺角与PSR的关系… 31 图2-30Voo为2.1V时工艺角与PSR的关系 31 图2-31电源变化与噪声的关系… 32 图2-32电源变化与启动时间的关系… 33III 图目录 图 1-1 系统结构 ··························································································6 图 2-1 带隙基准电压源电路拓扑结构 ··························································9 图 2-2 带隙基准电压源核心电路 ·······························································10 图 2-3 典型带隙基准电压源电路的温度系数··············································10 图 2-4 带隙基准电压源电路原理图····························································11 图 2-5 数字控制带隙基准电压源原理图·····················································12 图 2-6 可控 PNP 晶体管组基本单元··························································13 图 2-7 简单的差分放大器··········································································13 图 2-8 引起带隙基准电压源电路误差的因素··············································14 图 2-9 MOS 管的变化对输出参考电压温度曲线的影响 ·····························15 图 2-10 电阻的变化对输出参考电压温度曲线的影响·································15 图 2-11 双极型晶体管的变化对输出参考电压温度曲线的影响···················16 图 2-12 温度曲线 ······················································································16 图 2-13 带隙基准电压源的等效噪声电路···················································18 图 2-14 差分放大器的噪声源·····································································20 图 2-15 带隙基准电压源电路图·································································21 图 2-16 误差放大器电路结构·····································································21 图 2-17 RC 滤波器频率特性······································································22 图 2-18 RC 低通滤波器对 PSR 的影响 ·····················································23 图 2-19 RC 低通滤波器对噪声的影响 ·······················································23 图 2-20 电源变化与温度曲线的关系··························································25 图 2-21 VDD为 3.3 V 时工艺角与温度曲线的关系······································25 图 2-22 VDD为 2.1 V 时工艺角与温度曲线的关系······································26 图 2-23 电源变化与环路交流特性的关系···················································27 图 2-24 电源变化与单位增益带宽的关系···················································27 图 2-25 电源变化与相位裕度的关系··························································28 图 2-26 VDD为 2.1 V 时工艺角与环路交流特性的关系·······························28 图 2-27 VDD为 3.3 V 时工艺角与环路交流特性的关系·······························29 图 2-28 电源变化与 PSR 的关系·······························································30 图 2-29 VDD为 3.3 V 时工艺角与 PSR 的关系···········································31 图 2-30 VDD为 2.1 V 时工艺角与 PSR 的关系···········································31 图 2-31 电源变化与噪声的关系·································································32 图 2-32 电源变化与启动时间的关系··························································33