Samah Milhem, Soliman Mahmoud

CMOS Digitally Programmable Lock-In Amplifier for Bio Applications

• Broschiertes Buch

Produktbeschreibung

This work proposes a new EEG detection system based on a CMOS lock-in amplifier with programmable gain. The proposed lock-in amplifier consists of five stages: the first and fourth stages are 4-quadrant multipliers with a gain of 8 dB, the second stage is made of two cascaded programmable instrumentation amplifiers (IA), while the third stage is a band-pass filter (BPF) centered at 1 kHz with a gain of 7 dB, and the last stage is a low pass filter (LPF) with a gain of 30 dB and a bandwidth of 150 Hz. A basic building block is the digitally programmable balanced output operational transconductance amplifier (DPOTA), which is used in this work to realize the filters and the IA using 0.25-µm CMOS technology. The proposed lock-in amplifier is characterized by a wide programmable gain ranging from 48dB to 92dB, low power consumption of 71 µW at the maximum gain setting, and low input referred noise of 383nV/ Hz @ 20Hz. PVT and Monte Carlo simulations are also carried out to show the robustness of the proposed lock-in amplifier as a good candidate for EEG detection systems.

Produktdetails

• Verlag: LAP Lambert Academic Publishing
• Seitenzahl: 124
• Erscheinungstermin: 15. April 2019
• Englisch
• Abmessung: 220mm x 150mm x 8mm
• Gewicht: 203g
• ISBN-13: 9786200005380
• ISBN-10: 6200005389
• Artikelnr.: 56610908

Autorenporträt

Soliman A. Mahmoud erhielt 1994 den BSc-Abschluss mit Auszeichnung, 1996 den MSc-Abschluss und 1999 den Doktortitel, alle von der Abteilung für Elektronik und Kommunikation der Universität Kairo, Ägypten. Er ist Professor und Vorsitzender der Abteilung für Elektro- und Computertechnik an der Universität von Sharjah, Sharjah, VAE.