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Article
Low voltage linear tunable transconductor for high speed filters
A novel low voltage tunable linear transconductor is presented. The approach is based on quasi-floating gate transistors achieving higher transconductance and better dc common mode rejection than previous imp...
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Article
Compact SC frequency tuning circuit for continuous-time Gm–C filters
A novel automatic frequency tuning circuit for continuous-time filters is presented. Based on the switched-capacitor technique, the circuit offers an advantage in terms of simplicity resulting from the use of ...
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Article
A linear compact tunable transconductor for Gm-C applications
A CMOS highly linear voltage-controlled transconductor suitable for Gm-C filter design is presented. The control loop to program the transconductance maintains the input transistors in triode region with a com...
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Article
A new capacitor-ratio and offset independent residue amplifier
Matching accuracy of capacitors at the first stage of the residue amplifier limits the overall resolution in pipelined analog-to-digital converters. A new residue amplifier is presented in this paper which is ...
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Article
1.1 V Low-Power ΣΔ Modulator for 14-bit, 16 KHz A/D Conversion Using a New Low-Voltage Class-AB Op-amp
This paper presents the implementation of a second order Σ Δ modulator for a 1.1 V supply voltage. A new class-AB CMOS operational amplifier has been designed in order to achieve high-resolution under very-low...
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Article
Low-Power Low-Voltage Class-AB Linear OTA for HF Filters with a Large Tuning Range
This letter presents a new low-voltage class-AB differential linear OTA. The proposed transconductor uses a novel scheme based on two cross-coupled class-AB pseudo-differential pairs biased by a Flipped Voltag...
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Article
Low Voltage Class AB Output Stage for CMOS Op-Amps Using Multiple Input Floating Gate Transistors
A new class AB output stage for CMOS op-amps is proposed with simple and accurate quiescent current control using floating gate transistors. The proposed stage can be operated with a supply voltage close to a ...
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Article
Class AB Output Stages for Low Voltage CMOS Opamps with Accurate Quiescent Current Control by Means of Dynamic Biasing
Two new class AB output stages for CMOS op-amps are proposed with accurate quiescent current control. The second proposed stage also provides accurate control of the minimum current through the output transist...