A CMOS LOW-VOLTAGE TRANSCONDUCTOR FOR VHF CONTINUOUS-TIME FILTERS

1998 ◽  
Vol 08 (04) ◽  
pp. 497-505 ◽  
Author(s):  
T. S. LEE
Keyword(s):  
Continuous Time ◽  
Low Voltage ◽  
Output Resistance ◽  
Linearization Technique ◽  
Large Bandwidth ◽  
Common Mode Voltage ◽  
Continuous Time Filters ◽  
Excess Phase ◽  
Low Distortion ◽  
Simulation Results

A new CMOS low-voltage transconductor suitable for VHF continuous-time filters is proposed. The transconductance is tunable with the tunable input common-mode voltage. The output resistance of the transconductor is compensated and the resulting output resistance can be fine-tuned by means of a separate voltage. The transconductor has a large bandwidth due to excess phase compensation. Further, it exhibits low distortion due to the square-law linearization technique used. The performance of the transconductor is shown by simulation results.

LOW POWER CONTINUOUS TIME COMMON MODE SENSING FOR COMMON MODE FEEDBACK CIRCUITS

2010 ◽  
Vol 19 (03) ◽  
pp. 519-528 ◽  
Author(s):  
M. PRAMOD ◽  
T. LAXMINIDHI
Keyword(s):  
Continuous Time ◽  
Input Impedance ◽  
Cmos Process ◽  
High Input ◽  
High Input Impedance ◽  
Common Mode ◽  
Standby Power ◽  
Low Distortion ◽  
Simulation Results ◽  
Feedback Circuits

Continuous common mode feedback (CMFB) circuits having high input impedance and low distortion are proposed. The proposed circuits are characterized for 0.18 μm CMOS process with 1.8 V supply. Simulation results indicate that the proposed common mode detector consumes no standby power and CMFB circuit consumes 27–34% less power than previous high swing CMFB circuits.

Common Mode Feedback Circuits for Low Voltage Fully-Differential Amplifiers

2016 ◽  
Vol 25 (10) ◽  
pp. 1650124 ◽  
Author(s):  
S. Rekha ◽  
T. Laxminidhi
Keyword(s):  
Power Supply ◽  
Continuous Time ◽  
Efficient Solution ◽  
Low Voltage ◽  
Cmos Technology ◽  
Common Mode ◽  
Power Efficient ◽  
Differential Amplifiers ◽  
Fully Differential ◽  
Simulation Results

Continuous time common mode feedback (CMFB) circuits for low voltage, low power applications are proposed. Four circuits are proposed for gate/bulk-driven pseudo-differential transconductors operating on sub-1-V power supply. The circuits are validated for a bulk-driven pseudo-differential transconductor operating on 0.5[Formula: see text]V in 0.18[Formula: see text][Formula: see text]m standard CMOS technology. Simulation results reveal that the proposed CMFB circuits offer power efficient solution for setting the output common mode of the transconductors. They also load the transconductor capacitively offering capacitance of about 1[Formula: see text]fF to tens of femto farads.

scholarly journals Ultra‐low voltage, power efficient continuous‐time filters in 180 nm CMOS technology

2019 ◽  
Vol 13 (7) ◽  
pp. 988-997
Author(s):  
Rekha S. ◽  
Vasantha Moodabettu Harishchandra ◽  
Tonse Laxminidhi
Keyword(s):  
Continuous Time ◽  
Low Voltage ◽  
Cmos Technology ◽  
Power Efficient ◽  
Continuous Time Filters
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