Glyn High-Tech Distribution
presents the PS25451, an ultra-low cost version of the award-winning EPIC sensors recently introduced by Plessey Semiconductors for high volume remote sensing applications.
The PS25451 is a new range of ultra-high impedance, non-contact, solid state electric potential sensors that can be used for a variety of consumer electronic devices such as proximity switching of lighting, gesture based remote control of interactive toys, computer games, TVs, monitors and appliances, and presence detection for security alarm systems.
The new range of EPIC sensors now features a novel electrode design that replaces the expensive titanium dioxide electrodes currently used for the higher end medical applications of EPIC technology. The new electrode design for the PS25451 is formed on the copper track of the circuit board, which is then covered by the normal protective resist.
A completely new area of sensor technology, the EPIC sensor works by measuring tiny changes in an electric field, similar to a magnetometer detecting changes in a magnetic field even at a distance and through clothing. This enables its use in security motion sensors and non-contact electrical switches as well as medical applications detecting heartbeat, nerve and muscle activity either by dry contact or contactless.
Dr Keith Strickland, Plessey’s Technology Director explains that the EPIC sensor family can be used in an extremely wide variety of applications, with the wide range allowing customers to select the most appropriate sensor solution according to the application’s requirements for cost, operational range and sensitivity.
Already in commercial production by Plessey Semiconductors, EPIC sensors can be tuned for detection at a distance by adjusting the gain and bandwidth amplification circuitry. The PS25451 is supplied in a custom 3D package with exposed pins for surface mount assembly. Measuring 10mm x 10mm x 2mm, the sensors are pin compatible with the existing PS25401 EPIC sensor.