PS25402 Datasheet, PDF (1/4 Pages) List of Unclassifed Manufacturers – EPIC ULTRA HIGH IMPEDANCE MOVEMENT SENSOR ADVANCE INFORMATION

PS25402
EPIC Ultra High Impedance Movement Sensor
Advance Information
FEATURES
• Ultra high input resistance, typically > 300GΩ.
• Input capacitance as low as 16pF.
• 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
• Proximity switching of lighting and similar electric
circuits
• Remote control of TVs and other domestic appliances
• Presence detection for security / alarm systems
• Room occupancy detection for rescue services
• Simple gesture recognition to control children’s toys
• Controller-less computer gaming systems
• Remote life-sign detection
Data Sheet 291470 issue 1
Ordering Information
PS25402
Custom package (drawing to be released)
-25°C to +75°C
Plessey Semiconductors Electric Potential
Integrated Circuit (EPIC) product line targets a
range of applications.
The PS25402 is an ultra high impedance non-
contact solid state electric potential sensor. It
can be used to detect field disturbance due to
the movement of a near-by object. This
particular sensor has been optimised for
movement and remote life-sign detection.
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 remote sensing applications.
Fig. 1 The PS25402 Sensor
Fig. 2 Internal circuit of EPIC Movement Sensor
Data Sheet 291470 issue 1
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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