Title :
Slew-rate and gain enhancement in two stage operational amplifiers
Author :
Perez, Aldo Peña ; Nithin, K.Y.B. ; Bonizzoni, Edoardo ; Maloberti, Franco
Author_Institution :
Dept. of Electron., Univ. of Pavia, Pavia, Italy
Abstract :
A two stage op-amp with an effective technique to enhance slew-rate and gain is presented. The enhancement is provided by an auxiliary monitor circuit which is activated in slewing conditions, but can contribute to the gain in normal conditions. The amplifier, simulated in a 0.18 Omegam technology, achieves 74 dB DC gain, 160 MHz bandwidth and 26.8 V/mus slew-rate for a load capacitance of 1.75 pF with 362 muW power consumption, considering a supply voltage of 1.8 V.
Keywords :
operational amplifiers; bandwidth 160 MHz; capacitance 1.75 pF; gain enhancement; operational amplifiers; power 362 muW; slew-rate; slewing conditions; two stage op-amp; voltage 1.8 V; Bandwidth; Capacitance; Circuit simulation; Condition monitoring; Consumer electronics; Energy consumption; Low voltage; Operational amplifiers; Performance gain; Wireless communication;
Conference_Titel :
Circuits and Systems, 2009. ISCAS 2009. IEEE International Symposium on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-3827-3
Electronic_ISBN :
978-1-4244-3828-0
DOI :
10.1109/ISCAS.2009.5118305
