摘要
建立了非理想运算放大器的数学模型,推导了集成运算放大电路外部补偿电容的计算方法,进行了补偿后电路的稳定性分析。在此基础上,以TLV2464为例进行了实际电路调试。调试结果表明,在保持增益不变的前提下,采用本带宽补偿方法可以直接确定实际补偿电容的取值,而且实际补偿后的带宽与预期的设计指标相一致,从而可以大大缩短电路调试时间,提高电路设计效率。
A mathematical model of non-ideal operational amplifier has been presented, a computing method of the external frequency compensation capacity has been deduced and the stability of the circuit has been analyzed. Moreover, the final result of frequency compensation based on TLV2464 is presented by debugging an actual eircut. The debugged results show that by keeping a constant gain the method of integrated operational amplifier circuit frequency compensation presented is effective to calculate the value of compensation capacity and the band width after compensation satisfies the design requirements. Thus, the time of circuit debugging is greatly shortened, and the efficiency of circuit design is improved.
出处
《测控技术》
CSCD
北大核心
2009年第9期95-98,共4页
Measurement & Control Technology
关键词
集成运算放大电路
带宽补偿
稳定性分析
integrated operational amplifier
frequency compensation
stability analysis
