公开(公告)号：US08089314B2

公开(公告)日：2012-01-03

申请号：US12764294

申请日：2010-04-21

申请人： Rajesh A. Thakker ,  Mayank Shrivastava ,  Maryam Shojaei Baghini ,  Dinesh Kumar Sharma ,  Ramgopal V. Rao ,  Mahesh B. Patil

发明人： Rajesh A. Thakker ,  Mayank Shrivastava ,  Maryam Shojaei Baghini ,  Dinesh Kumar Sharma ,  Ramgopal V. Rao ,  Mahesh B. Patil

IPC分类号： H03F3/45

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，以便以最小的功耗牺牲和其他运算放大器参数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。 检测到的回转操作和电流源的检测可以使用两个比较器电路实现，一个用于正回转操作，另一个用于负回转操作。 实现了这种转换速率改进概念的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）。

公开(公告)号：US20110215868A1

公开(公告)日：2011-09-08

申请号：US12764294

申请日：2010-04-21

申请人： Rajesh A. Thakker ,  Mayank Shrivastava ,  Maryam Shojaei Baghini ,  Dinesh Kumar Sharma ,  Ramgopal V. Rao ,  Mahesh B. Patil

发明人： Rajesh A. Thakker ,  Mayank Shrivastava ,  Maryam Shojaei Baghini ,  Dinesh Kumar Sharma ,  Ramgopal V. Rao ,  Mahesh B. Patil

IPC分类号： H03F3/45

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，以便以最小的功耗牺牲和其他运算放大器参数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。 检测到的回转操作和电流源的检测可以使用两个比较器电路实现，一个用于正回转操作，另一个用于负回转操作。 实现了这种转换速率改进概念的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）。