Settling Time Minimization of Operational Amplifiers

Author(s):  
Andrea Pugliese ◽  
Gregorio Cappuccino ◽  
Giuseppe Cocorullo
2012 ◽  
Vol 21 (07) ◽  
pp. 1250055
Author(s):  
HASSAN RAMEZANNEJAD DIZABADI ◽  
SABER ABBASZADE

Conventional frequency response compensation methods for three-stage amplifier are not appropriate for fast transient response viewpoint. Therefore, herein, we have utilized the minimum settling time (MST) approach to compensate the crossed feed-forward reversed nested Miller compensation (CFRNMC) amplifier which was previously compensated by the conventional frequency response methods. Compensation rules for the considered amplifier are proposed based on time-domain parameters. The three-stage amplifier is designed in a 90 nm CMOS technology with the power supply of 1 V. The amplifier drives the capacitor load of 100 pF and its closed-loop time response to a unit-step input has a settling time less than 34 ns with 1% settling error.


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