scholarly journals Design Procedures for a Fully Differential Telescopic Cascode Two-Stage CMOS Operational Amplifier

2012 ◽  
Vol 29 ◽  
pp. 4030-4034 ◽  
Author(s):  
M.Y. Ren ◽  
T. Wu ◽  
M.X. Song ◽  
C.X. Zhang
Keyword(s):  
Operational Amplifier ◽  
Two Stage ◽  
Design Procedures ◽  
Fully Differential

Improving power efficiency of a two-stage operational amplifier for biomedical applications

2015 ◽  
Vol 84 (2) ◽  
pp. 173-183 ◽  
Author(s):  
Meysam Akbari ◽  
Masoud Nazari ◽  
Leila Sharifi ◽  
Omid Hashemipour
Keyword(s):  
Operational Amplifier ◽  
Power Efficiency ◽  
Biomedical Applications ◽  
Two Stage

A High-Speed Fully Differential Telescopic Op-Amp for Active Filter Designs in V2X Applications

2021 ◽  
Author(s):  
Furkan Barin ◽  
Ertan Zencir
Keyword(s):  
High Speed ◽  
Low Voltage ◽  
Supply Voltage ◽  
Active Filter ◽  
Ultra Wideband ◽  
Two Stage ◽  
Fully Differential ◽  
Op Amp ◽  
Current Mirrors ◽  
Design Techniques

In this paper, an ultra-wideband fully differential two-stage telescopic 65-nm CMOS op-amp is presented, which uses low-voltage design techniques such as level shifter circuits and low-voltage cascode current mirrors. The designed op-amp consists of two stages. While the telescopic first stage provides high speed and low swing, the second stage provides high gain and large swing. Common-mode feedback circuits (CMFB), which contain five transistors OTA and sensing resistors, are used to set the first-stage output to a known value. The designed two-stage telescopic operational amplifier has 41.04[Formula: see text]dB lower frequency gain, 1.81[Formula: see text]GHz gain-bandwidth product (GBW) and 51.9∘ phase margin under 5[Formula: see text]pF load capacitance. The design consumes a total current of 11.9[Formula: see text]mA from a 1.2-V supply voltage. Presented fully differential two-stage telescopic op-amp by using low-voltage design techniques is suitable for active filter in vehicle-to-everything (V2X) applications with 120[Formula: see text][Formula: see text]m[Formula: see text]m layout area.

A Fully Differential Operational Amplifier with Slew Rate Enhancer and Adaptive Bias for Ultra Low Power

2017 ◽  
Vol 13 (1) ◽  
pp. 67-75 ◽  
Author(s):  
P. Karuppanan ◽  
Soumya Ranjan Ghosh ◽  
Kamran Khan ◽  
Pavan Kumar Bikki
Keyword(s):  
Low Power ◽  
Operational Amplifier ◽  
Slew Rate ◽  
Ultra Low Power ◽  
Fully Differential
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