摘要
利用自偏置电流源闭环反馈改变开环电阻的特性,设计了一种自偏置有源负载运算放大器,实现了低功耗、高开环增益、低输入失调的性能;并将此运算放大器应用于带隙电压源中。电路在德国XFAB公司XB06工艺上流片实现。芯片实测结果验证了设计的正确性和新颖性。
A low power, high open-loop gain, low input offset voltage amplifier with self-bias active load was designed by using closed-loop feedback of self-bias current source to change open loop resistance. The amplifier was used in a bandgap voltage reference source, which was implemented in XFAB＇ s XB06 process. Test results of the chip validated the design.
出处
《微电子学》
CAS
CSCD
北大核心
2008年第5期684-687,共4页
Microelectronics
