摘要
在分析传统Brokaw结构带隙基准电路的基础上,采用分段曲率补偿技术,结合电阻修调技术,实现了一个高精度带隙基准电压源。基于HHNEC 0.35μm BCD工艺,采用Cadence的Specture进行仿真,结果表明,该带隙基准源在3.3V工作电压下稳定输出2.5V电压,在-40℃～85℃温度范围内具有不超过2.254×10-6/℃的低温度系数和105dB的高电源抑制比。
Based on the analysis of conventional Brokaw bandgap reference circuits, a high precision voltage reference circuit was implemented by using subsection curvature compensation and resistor trimming techniques. Based on HHNEC 0. 35 pxn BCD process, the bandgap reference source was simulated with Specture of Cadenc~ Simulation results indicated that the circuit could stably generate 2. 5 V reference voltage at 3. 3 V supply, and it achieved a temperature coefficient of 2. 254X10-8/℃ and a PSRR of 105 dB, respectively, in the temperature range from-40 ℃ to 85 ℃.
出处
《微电子学》
CAS
CSCD
北大核心
2013年第4期453-456,共4页
Microelectronics
关键词
带隙基准源
曲率补偿
低温度系数
Bandgap reference source
Curvature compensation
Low temperature coefficient
