PS25201A Datasheet, PDF (5/6 Pages) List of Unclassifed Manufacturers – EPIC ULTRA HIGH IMPEDANCE ELECTROPHYSIOLOGICAL SENSOR

PS25201A/B
APPLICATION OF THE ECG SENSOR
Because of the large coupling capacitance to the body (around 250pF) the EPIC sensor’s internal electrometer can
be used in differential mode to recover true surface potential ECG signals from the surface of the skin. A typical
ECG signal at the surface of the skin is 1mV p-p.
Vdiff
Fig. 7 Differential measurement of body (skin) surface potential to produce ECG trace
Fig. 8 Comparison of two vectors from a pair of EPIC sensors (top)
and two conventional Ag/AgCl electrodes (bottom)
Data Sheet 291841 issue 3
PLESSEY SEMICONDUCTORS LTD
TAMERTON ROAD | ROBOROUGH | PLYMOUTH | DEVON | PL6 7BQ
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