Title :
A digital cardiotachometer ASIC
Author :
Burke, M.J. ; Boilson, A.
Author_Institution :
Dept. of Electron. & Electr. Eng., Dublin Univ., Ireland
Abstract :
A circuit has been designed which measures the beat-to-beat heart-rate in humans, accepting as input a digital signal representing the subject´s pulse. The range of heart-rate covered is 30-255 beats/min. The design is based on an inverse-time counter implemented using a pair of 8-bit down-counters and the associated state determining combinational logic. It also incorporates the logic for a latched 3-digit LCD decoder/driver interface in addition to an 8-bit binary output. The IC has been designed for full testability with bidirectional access to key timing and control points being provided and a scan path strategy applied to the main blocks of the chip. Various test and access modes are controlled using a decoding/multiplexing principle. The IC was designed using the 2.4 μm CMOS Mietec cell library and Cadence EDGE software. It contains 13,000 transistors and occupies a silicon area of 25 mm2
Keywords :
CMOS digital integrated circuits; application specific integrated circuits; biomedical electronics; counting circuits; digital instrumentation; electrocardiography; tachometers; 2.4 micron; 8 bit; CMOS Mietec cell; Cadence EDGE; IC testability; beat-to-beat heart-rate measurement; bidirectional access; combinational logic circuit; decoding; digital cardiotachometer ASIC; down-counter; human pulse; inverse-time counter; latched LCD decoder/driver interface; multiplexing; Application specific integrated circuits; Cardiology; Counting circuits; Decoding; Humans; Integrated circuit testing; Logic design; Pulse circuits; Pulse measurements; Signal design;
Conference_Titel :
Electronics, Circuits, and Systems, 1996. ICECS '96., Proceedings of the Third IEEE International Conference on
Conference_Location :
Rodos
Print_ISBN :
0-7803-3650-X
DOI :
10.1109/ICECS.1996.584608
