Proceedings ArticleDOI
Ultra Low Voltage Variable Gain Cherry-Hooper Amplifier with 1MHz Constant Bandwidth, 1.7µW Power Dissipation and ±0.2V Supply
Hector Daniel Rico-Aniles,Jaime Ramirez-Angulo,Antonio J. Lopez-Martin,Jose Miguel Rocha,Alejandro Diaz-Sanchez,Ramon G. Carvajal +5 more
- pp 786-789
TLDR
An ultra-low-voltage low-power amplifier is introduced that operates with a ±0.2V supply and ±190mV linear input range and has a figure of merit of 2.61 MHzpF/µW for a nominal gain A=15.6.Abstract:
An ultra-low-voltage low-power amplifier is introduced. The design is based on the Cherry-Hooper architecture and operates with a ±0.2V supply and ±190mV linear input range. It has an approximately constant bandwidth of 1MHz with a power consumption of 1.7µW. The low-voltage operation is achieved using floating batteries that keep the gates of all differential pairs at a constant value close to the upper rail with large input signal variations. It has a figure of merit of 2.61 MHzpF/µW for a nominal gain A=15.6.read more
Citations
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Proceedings ArticleDOI
A Low Power Programmable Gain Integrated Front-End for Electromyogram Signal Sensing
TL;DR: The architecture is characterized by ultralow power consumption and gain reconfigurability, and three stages are designed to form the whole front-end to enhance the overall supply rejection ratio, common mode rejection ratio and the dynamic range.
References
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A free but efficient low-voltage class-AB two-stage operational amplifier
TL;DR: A simple and efficient low-voltage two-stage operational amplifier with Class-AB output stage with large effective output current boosting factor and close to a factor 2 bandwidth enhancement is introduced.
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Design of a Low Power, Inductorless Wideband Variable-Gain Amplifier for High-Speed Receiver Systems
TL;DR: This paper presents the design and analysis of a wideband inductorless variable-gain amplifier for high-speed communication receiver systems and the proposed methodology of using a dual-feedback network for bandwidth extension and dc offset cancellation is analyzed theoretically.
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Settling time reduction in wide-band direct-coupled transistor amplifiers
TL;DR: In this paper, a wide-band direct-coupled transistor amplifier exhibits greatly improved settling time characteristics as the result of circuitry permitting the use of current feedback rather than voltage feedback in order to reduce the sensitivity of settling time and bandwidth to feedback elements without thereby affecting the manner in which feedback is applied externally by the user.
Proceedings ArticleDOI
A simple approach for the implementation of CMOS amplifiers with constant bandwidth independent of gain
TL;DR: An efficient implementation of the Cherry-Hooper amplifier scheme based on a new OTA structure is discussed, used to design highly linear CMOS amplifiers with programmable and accurate gain and high bandwidth that remains approximately constant with gain adjustment.
Proceedings ArticleDOI
Inductorless bandwidth extension using local positive feedback in inverter-based TIAs
TL;DR: This paper investigates an inductorless technique for bandwidth extension which uses local positive feedback in an optical receiver front-end based on an inverter-based transimpedance amplifier and Cherry-Hooper post-amplifier to improve performance.