The paper describes a Track and Hold Amplifier suitable for high-speed and high resolution applications like Software Defined Radios. Thanks to the adopted techniques to maximize the resolution without reducing the sampling frequency, all the non idealities limiting the equivalent number of bits have been taken into account. In particular a novel technique to reduce the third harmonic distortion has been proposed and exploited. Post-layout simulations show that the performances are quite constant and the linearity is compatible with 11-bit (SFDR) at Fs= 1.5GS/s up to a frequency 1GHz.
A high bandwidth 11-bit 1.5GS/s track and hold amplifier in 0.25 µm SiGe BiCMOS / Cannone, F; Cascella, D; Avitabile, G; Coviello, G. - STAMPA. - (2012), pp. 49-52. (Intervento presentato al convegno International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2012 tenutosi a Sevilla, Spain nel September 19-21, 2012) [10.1109/SMACD.2012.6339414].
A high bandwidth 11-bit 1.5GS/s track and hold amplifier in 0.25 µm SiGe BiCMOS
Cannone F;Cascella D;Avitabile G;Coviello G
2012-01-01
Abstract
The paper describes a Track and Hold Amplifier suitable for high-speed and high resolution applications like Software Defined Radios. Thanks to the adopted techniques to maximize the resolution without reducing the sampling frequency, all the non idealities limiting the equivalent number of bits have been taken into account. In particular a novel technique to reduce the third harmonic distortion has been proposed and exploited. Post-layout simulations show that the performances are quite constant and the linearity is compatible with 11-bit (SFDR) at Fs= 1.5GS/s up to a frequency 1GHz.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
