Two internally compensated CMOS current-feedback operational amplifiers are discussed in this paper. The circuits are entirely made up of class AB stages, thereby increasing slew rate and drive capability, avoiding many of the drawbacks incurred by previous CMOS and even bipolar implementations. Experimental results on one prototype fabricated in a 0.35-mu m process using a 20-pF load and supplied with 3.3 V are also given, showing, as main performance parameters, a SR of 35 V/mu s and a constant closed-loop bandwidth (in inverting configuration with a 10-k Omega feedback resistor) of about 2 MHz.
Two CMOS current feedback operational amplifiers
DI CATALDO, Giuseppe;GRASSO, ALFIO DARIO;PENNISI, Salvatore
2007-01-01
Abstract
Two internally compensated CMOS current-feedback operational amplifiers are discussed in this paper. The circuits are entirely made up of class AB stages, thereby increasing slew rate and drive capability, avoiding many of the drawbacks incurred by previous CMOS and even bipolar implementations. Experimental results on one prototype fabricated in a 0.35-mu m process using a 20-pF load and supplied with 3.3 V are also given, showing, as main performance parameters, a SR of 35 V/mu s and a constant closed-loop bandwidth (in inverting configuration with a 10-k Omega feedback resistor) of about 2 MHz.File in questo prodotto:
File | Dimensione | Formato | |
---|---|---|---|
r9 - tcasii_two cfoas.pdf
solo gestori archivio
Tipologia:
Versione Editoriale (PDF)
Dimensione
495.77 kB
Formato
Adobe PDF
|
495.77 kB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.