Title :
Current-mode instrumentation amplifier
Author :
Toumazou, C. ; Lidgey, F.J. ; Makris, C.A.
Author_Institution :
Imperial Coll., London, UK
Abstract :
Conventional resistive feedback differential amplifiers, including the standard three op-amp instrumentation amplifier, require precisely matched resistors to achieve high CMRR. The circuit described in this paper uses op-amp supply-current sensing techniques to obtain high CMRR performance over a wider bandwidth than conventional designs. A feature of this design is its simplicity and that precisely matched resistors are not required
Keywords :
instrumentation amplifiers; operational amplifiers; CMRR; bandwidth; current-mode circuits; instrumentation amplifier; op-amp supply-current sensing techniques; precisely matched resistors;
Conference_Titel :
Current Mode Analogue Circuits, IEE Colloquium on
Conference_Location :
London
