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1. 发明授权

EP2543141B1 OPERATIONAL AMPLIFIER HAVING IMPROVED SLEW RATE 有权
标题翻译：操作过滤器MIT VERBESSERTER ANSTIEGSRATE
公开(公告)号：EP2543141B1
公开(公告)日：2017-03-08
申请号：EP10846922.2
申请日：2010-11-17
申请人： Indian Institute of Technology Bombay
发明人： THAKKER, Rajesh, A. , SRIVASTAVA, Mayank , BAGHINI, Maryam, Shojaei , SHARMA, Dinesh, K. , RAO, V., Ramgopal , PATIL, Mahesh, B.
IPC分类号： H03F3/45 , H03F1/02
CPC分类号： H03F3/45475 , H03F1/0222 , H03F3/45569 , H03F2203/45248
摘要： A slew rate improved operational amplifier circuit is provided to improve the slew rates of an operational amplifier with minimal sacrifices in power dissipation and other operational amplifier parameters. To improve the slew rates of operational amplifiers, additional current sources are activated when a slewing operation is detected. The detection of slewing operations and the activation of current sources upon detection can be implemented using two comparator circuits—one for a positive slewing operation, and one for a negative slewing operation. A sub-45 nm FinFET implementation of this slew rate improvement concept was implemented and compared against slew rate optimized individual two-stage operational amplifiers. Simulations show that slew rates were significantly improved by the implementation of the comparator circuits (5590 V/μs vs. 273 V/μs), with minimal increases in power dissipation (78 μW vs. 46 μW).
摘要翻译：提供了一种转换速率改进的运算放大器电路，以尽可能减少功耗和其他运算放大器参数的牺牲来提高运算放大器的转换速率。为了提高运算放大器的转换速率，当检测到回转操作时，会激活额外的电流源。检测回转操作和电流源的检测可以使用两个比较器电路来实现，一个用于正回转操作，另一个用于负回转操作。实现了该转换率改进概念的45纳米FinFET实现，并将其与转换速率优化的单个两级运算放大器进行比较。模拟显示，通过实施比较器电路（5590 V /μsvs. 273 V /μs），转换速率得到显着提高，功耗增加最小（78μW至46μW）。

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