PS25203B Datasheet, PDF (1/6 Pages) List of Unclassifed Manufacturers – EPIC ULTRA HIGH IMPEDANCE ELECTROPHYSIOLOGICAL SENSOR

PS25203B
EPIC Ultra High Impedance
Electrophysiological Sensor
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 20kHz.
• Operates with bipolar power supply from ±2.4V to
±4.0V.
• 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 291839 issue 2
Ordering Information
PS25203B
Custom package
-25°C to +75°C
Plessey Semiconductors Electric Potential
Integrated Circuit (EPIC) product line targets a
range of applications.
The PS25203B 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 PS25203B - Top and Bottom
Fig. 2 Internal circuit of EPIC ECG Sensor
Data Sheet 291839 issue 2
PLESSEY SEMICONDUCTORS LTD
TAMERTON ROAD | ROBOROUGH | PLYMOUTH | DEVON | PL6 7BQ
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