PS25405B Datasheet, PDF (1/5 Pages) List of Unclassifed Manufacturers – EPIC ULTRA HIGH IMPEDANCE MOVEMENT SENSOR ADVANCE DATASHEET

PS25405B
EPIC Ultra High Impedance Movement Sensor
Advance Datasheet
Data Sheet 291951 issue 2
FEATURES
• Ultra high effective input resistance, typically 20GΩ.
• Effective input capacitance as low as 15pF.
• Upper 3dB point typically 20kHz.
• 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
PS25405B
Custom package
-25°C to +75°C
Plessey Semiconductors Electric Potential
Integrated Circuit (EPIC) product line targets a
range of applications.
The PS25405B 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 PS25405B Sensor
Fig. 2 Internal circuit of EPIC Movement Sensor
Data Sheet 291951 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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