Datasheet > PS25401A

PS25401A

更新时间： 2024-09-27 01:11:19

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EPIC ULTRA HIGH IMPEDANCE MOVEMENT SENSOR

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PS25401A 数据手册

PS25401A / B

EPIC Ultra High Impedance Movement Sensor

Data Sheet 291837 issue 2

FEATURES

Ordering Information

•

Ultra high effective input resistance, typically 20GΩ.

Effective input capacitance as low as 15pF.

Upper 3dB point typically 10kHz.

PS25401B

Custom package

Operates with bipolar power supply from 2.4V to 4.0V.

-25°C to +75°C

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 PS25401B 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 PS25401B Sensor

Fig. 2 Internal circuit of EPIC Movement Sensor

Data Sheet 291837 issue 2

PLESSEY SEMICONDUCTORS LTD

TAMERTON ROAD | ROBOROUGH | PLYMOUTH | DEVON | PL6 7BQ

12 3 4 5

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