A 13 \mu Analog Signal Processing IC for Accurate Recognition of Multiple Intra-Cardiac Signals

• Published in: IEEE transactions on biomedical circuits and systems Vol. 7; no. 6; pp. 785 - 795
• Main Authors: Long Yan, Pettine, Julia, Mitra, Srinjoy, Sunyoung Kim, Dong-Woo Jee, Hyejung Kim, Osawa, Masato, Harada, Yasunari, Tamiya, Kosei, Van Hoof, Chris, Yazicioglu, Refet Firat
• Format: Journal Article
• Language: English
• Published: United States IEEE 01.12.2013
• Subjects: Accuracy; Algorithms; Analog feature extraction; Application specific integrated circuits; bio-impedance; Digital signal processing; Electrocardiography; Electrocardiography - instrumentation; Electronics, Medical - instrumentation; Equipment Design; Feature extraction; Heart beat; Heart Rate - physiology; heartbeat detection; Humans; implantable pacemaker; intra-cardiac signal; Pacemaker, Artificial; Prostheses and Implants; Signal Processing, Computer-Assisted - instrumentation
• ISSN: 1932-4545; 1940-9990
• DOI: 10.1109/TBCAS.2013.2297353

A low-power analog signal processing IC is presented for the low-power heart rhythm analysis. The ASIC features 3 identical, but independent intra-ECG readout channels each equipping an analog QRS feature extractor for low-power consumption and fast diagnosis of the fatal case. A 16-level digitized sine-wave synthesizer together with a synchronous readout circuit can measure bio-impedance in the range of 0.1-4.4 kΩ with 33 mΩrms resolution and higher than 97% accuracy. The proposed 25 mm 2 ASIC consumes only 13 μA from 2.2 V. It is a highly integrated solution offering all the functionality of acquiring multiple high quality intra-cardiac signals, requiring only a few limited numbers of external passives.