PS25251 Datasheet, PDF (1/6 Pages) List of Unclassifed Manufacturers – EPIC ULTRA HIGH IMPEDANCE ECG SENSOR ADVANCE INFORMATION

PS25251
EPIC Ultra High Impedance ECG Sensor
Advance Information
FEATURES
• Ultra high input resistance, typically 20GΩ.
• Dry-contact capacitive coupling.
• Input capacitance as low as 15pF.
• Lower -3dB point typically 200mHz.
• Upper -3dB point typically 10kHz.
• Operates with bipolar power supply from ±2.4V to
±5.5V.
• Sensors supplied in a custom package with exposed
pins for surface mount assembly.
APPLICATIONS
• Contact ECG signal detection for:
• Non-critical patient monitoring
equipment.
• Emergency response diagnostics.
• Lifestyle sports and health products.
• Suitable for long-term and remote
monitoring.
Data Sheet 291766 issue 3
Ordering Information
PS25251
Custom package
-25°C to +75°C
Plessey Semiconductors Electric Potential
Integrated Circuit (EPIC) product line targets a
range of applications.
The PS25251 is an ultra high impedance solid
state ECG (electrocardiograph) sensor. It can
be used as a dry contact ECG sensor without
the need for potentially dangerous low
impedance circuits across the heart. The
resolution available is as good as or better
than conventional wet electrodes.
The device uses active feedback techniques to
both lower the effective input capacitance of the
sensing element (Cin) and boost the input
resistance (Rin). These techniques are used to
realise a sensor with a frequency response
suitable for both diagnostic and monitoring ECG
applications.
Fig. 1 PS25251 (top and bottom)
Fig. 2 Internal circuit of EPIC ECG Sensor
Data Sheet 291766 issue 3
Plessey Semiconductors Ltd.
Design & Technology Centre, Delta 500, Delta Business Park, Great Western Way, Swindon, UK SN5 7XE
Tel: [phone]
Fax: [phone]
Web: www.plesseysemi.com
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