A CMOS class-AB instrumentation amplifier for micropower applications
| dc.contributor.author | De Lima, Jader A. [UNESP] | |
| dc.contributor.author | Silva, Sidnei F. [UNESP] | |
| dc.contributor.institution | Universidade Estadual Paulista (UNESP) | |
| dc.date.accessioned | 2022-04-29T07:13:51Z | |
| dc.date.available | 2022-04-29T07:13:51Z | |
| dc.date.issued | 1998-12-01 | |
| dc.description.abstract | A simple micropower CMOS instrumentation amplifier comprising a double-input Gm-stage and a low-distortion class-AB output stage is presented. The amplifier was designed according to micropower techniques to achieve high values of low-frequency differential-gain and common-mode rejection and integrated in a digital-oriented 0.7μm n-Well CMOS process. For a bias current of 130nA, amplifier standby power consumption is 26μW. Measurements revealed good characteristics at DC and low frequencies such as A dm=87dB and CMRR=-137dB. For a compensation capacitor of 4.5pF, it was found ΦM=73° and a unity-gain frequency of 47KHz. Offset voltage was below 0.7mV, typically. Resistive loads down to 10KΩ can be driven with a 1.3V peak-to-peak swing. Overall linearity is represented by a THD of - 42.9dB. Although bandwidth limitation occurs due to small bias currents, the proposed amplified can be advantageously employed in many control and low-frequency signal processing. © 1998 Editions Frontieres. | en |
| dc.description.affiliation | Electrical Engineering Department Universidade Estadual Paulista, 12500-000 Guaratingueta | |
| dc.description.affiliationUnesp | Electrical Engineering Department Universidade Estadual Paulista, 12500-000 Guaratingueta | |
| dc.format.extent | 112-115 | |
| dc.identifier | http://dx.doi.org/10.1109/ESSCIR.1998.186221 | |
| dc.identifier.citation | European Solid-State Circuits Conference, p. 112-115. | |
| dc.identifier.doi | 10.1109/ESSCIR.1998.186221 | |
| dc.identifier.issn | 1930-8833 | |
| dc.identifier.scopus | 2-s2.0-84893746570 | |
| dc.identifier.uri | http://hdl.handle.net/11449/227549 | |
| dc.language.iso | eng | |
| dc.relation.ispartof | European Solid-State Circuits Conference | |
| dc.source | Scopus | |
| dc.title | A CMOS class-AB instrumentation amplifier for micropower applications | en |
| dc.type | Trabalho apresentado em evento |