A high input dynamic range, low voltage cascode current mirror and enhanced phase-margin folded cascode amplifier

Author(s):  
Meysam Akbari ◽  
Ardavan Javid ◽  
Omid Hashemipour

2019 ◽  
Vol 90 ◽  
pp. 88-95 ◽  
Author(s):  
Mohamadsaeed Doreyatim ◽  
Meysam Akbari ◽  
Masoud Nazari ◽  
Sina Mahani


2019 ◽  
Vol 33 (14n15) ◽  
pp. 1940045
Author(s):  
Sujito ◽  
Huu-Duy Tran ◽  
You-Cyuan Wei ◽  
Hung-Yu Wang

A novel cascode current mirror for low-voltage application with larger input dynamic range is presented. The proposed mirror circuit combines the advantages of wide input swing, wide output swing and large output resistance capability. It is suitable for low-voltage and low-power application. Simulation results show that the circuit work properly for the input current ranges of 10 [Formula: see text]A to 1 mA and bandwidth is 5.02 GHz for 1 mA DC component.



2002 ◽  
Vol 15 (1) ◽  
pp. 93-101
Author(s):  
Lyes Bouzerara ◽  
Tahar Belaroussi ◽  
Boualem Amirouche

A low voltage, high dc gain and wideband load compensated cas code operational transconductance amplifier (OTA), using an active positive feedback with feed forward technique and frequency-dependent current mirrors (FDCM), is presented and analyzed. Such techniques stand as a powerful method of gain bandwidth and phase margin enhancements. In this paper, a frequency-dependent current mirror, whose input impedance increases with frequency, is used to form the feed forward path at the input of the current mirror with a feed forward capacitor. By using these techniques, the gain bandwidth product of the amplifier is improved from 115 MHz to 194 MHz, the phase margin is also improved from 85? to 95? and the gain is enhanced from 11 dB to 93 dB. This amplifier operates at 2.5 V power supply voltage drives a capacitive load of 1pF and gives a power dissipation of 7 mW. The predicted performance is verified by simulations using HSPICE tool with 0.8 fim CMOS AMS parameters.



2005 ◽  
Vol 46 (2) ◽  
pp. 91-98
Author(s):  
Mostafa Savadi Oskooei ◽  
Khayrollah Hadidi ◽  
Abdollah Khoei






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