PS25451 Datasheet, PDF (1/5 Pages) List of Unclassifed Manufacturers – EPIC ULTRA HIGH IMPEDANCE MOVEMENT SENSOR ADVANCE INFORMATION

Preliminary Datasheet PS25451
EPIC Ultra High Impedance Movement Sensor
Advance Information
Data Sheet 291767 issue 2
FEATURES
• Ultra high effective input resistance, typically 20GΩ.
• Effective input capacitance as low as 15pF.
• 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
• 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
Ordering Information
PS25451
Custom package
-25°C to +75°C
Plessey Semiconductors Electric Potential
Integrated Circuit (EPIC) product line targets a
range of applications.
The PS25451 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
functionality can be employed in a range of
applications including security motion sensors
and non-contact electric switches for lighting,
door opening, toys etc
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 PS25451 Sensor Top and Bottom
Fig. 2 Internal circuit of EPIC Movement Sensor
Data Sheet 291767 issue 2
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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