Abstract
This paper describes a folded cascode CMOS instrumentation amplifier input stage, which has an increased immunity to electromagnetic interference (EMI). The proposed structure uses a source-buffered concept with a replica circuit to achieve a higher EMI immunity over a wide range of frequencies, from 10 MHz to 1 GHz. Circuit simulations illustrate how the proposed folded cascode amplifier reduces susceptibility to EMI even in the presence of large amplitude interferences. Simulation results show that the maximum EMI-induced output offset voltage for the proposed folded cascode amplifier is less than 8 mV over a wide range of frequencies (10 MHz to 1 GHz), when a 3.3 Vpp EMI signal is injected into the non-inverting input; when the amplifier is connected in a voltage-follower configuration. In contrast, the classic folded cascode amplifier generates a maximum input offset voltage of 700 mV at 1 GHz under the same operating conditions.
Original language | English |
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Title of host publication | Proceedings of the 2016 International Symposium on Electromagnetic Compatibility (EMC Europe 2016) |
Subtitle of host publication | Wroclaw, Poland, 5 – 9 September 2016 |
Place of Publication | Piscataway NJ |
Publisher | IEEE, Institute of Electrical and Electronics Engineers |
Pages | 546-551 |
Number of pages | 6 |
ISBN (Electronic) | 9781509014163 |
ISBN (Print) | 9781509014170 |
DOIs | |
Publication status | Published - 8 Nov 2016 |
Event | International Symposium on Electromagnetic Compatibility (EMC Europe) 2016 - Wroclaw University of Science and Technology (WrUT), Wroclaw, Poland Duration: 5 Sept 2016 → 9 Sept 2016 http://www.emceurope.org/2016/ (Conference website) |
Conference
Conference | International Symposium on Electromagnetic Compatibility (EMC Europe) 2016 |
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Abbreviated title | EMC Europe 2016 |
Country/Territory | Poland |
City | Wroclaw |
Period | 5/09/16 → 9/09/16 |
Other | EMC Europe 2016 Wroclaw International Symposium and Exhibition on Electromagnetic Compatibility September 5-9, 2016, Wroclaw, Poland |
Internet address |
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