Datasheet > PS25451

PS25451

更新时间： 2024-02-22 08:45:40

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EPIC Ultra High Impedance Movement Sensor

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Preliminary Datasheet PS25451

EPIC Ultra High Impedance Movement Sensor

Advance Information

Data Sheet 291767 issue 2

FEATURES

Ordering Information

•

Ultra high effective input resistance, typically 20GΩ.

PS25451

Custom package

Effective input capacitance as low as 15pF.

Upper 3dB point typically 10kHz.

-25°C to +75°C

Operates with bipolar power supply from 2.4V to 5.5V.

Sensors supplied in a custom package with exposed pins for

surface mount assembly.

Plessey Semiconductors Electric Potential

Integrated Circuit (EPIC) product line targets a

range of applications.

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

•

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

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: +44 1793 518000 Fax: +44 1793 518030 Web: www.plesseysemi.com

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