A Low-Voltage, Low-Power, Two-Stage Amplifier for Switched-Capacitor Applications in 90 nm CMOS Process

Design of a Low-Voltage, Low-Power, Two-Stage Amplifier in 0.18 μm CMOS Process

A novel low-voltage two-stage operational amplifier employing resistive biasing is presented. This amplifier implements neutralization and correction common mode stability in second stage while employs capacitive dc level shifter and coupling between two stages. The structure reduces the power consumption and increases output voltage swing. The compensation is performed by simple miller method....

Very low-voltage fully differential amplifier for switched-capacitor applications

A fully differential opamp suitable for very-low voltage switched-capacitor circuits in standard CMOS technologies is introduced. The proposed two stage opamp needs a simple low voltage CMFB switched-capacitor circuit only for the second stage. Due to the reduced supply voltage, the CMFB circuit is implemented using bootstrapped switches. Minor modifications allow to use chopper stabilization f...

Switched-capacitor Circuit Techniques in Submicron Low-voltage Cmos

The continued down scaling of submicron CMOS technology forces innovation of practical and economical circuits that will tolerate reduced headroom (reduced power supply voltage) due to lowering of the technology’s maximum allowable voltage. Given the relatively large threshold voltages with respect to the shrinking headroom, a group of widely used analog signal processing building blocks that a...

A Cmos Class-ab Transconductance Amplifier for Switched-capacitor Applications

A novel CMOS operational transconductance amplifier (OTA) is presented, using a fully differential singlestage core OTA as input stage and a differential to single current converter as output stage, each biased at a separate current level. A large gain-bandwidth (GBW) product (2.7 MHz) and a high slew-rate (5 V//.LS) can be obtained by applying a large bias current to the core OTA. Due to the c...

Low-Voltage Fully Differential CMOS Switched-Capacitor Amplifiers