PS25012A2 Datasheet, PDF (2/3 Pages) List of Unclassifed Manufacturers – APPLICATION BOARDS FOR EPIC SENSOR PS25202

PS25012A2, PS25012B2
Electrical Characteristics
These electrical characteristics apply to the PS25012A2 and PS25012B2 application boards that carry the PS25202
sensors. The electrical characteristics (@25ºC) are guaranteed by either production test or by design and
characterisation. They apply within the specified supply voltage unless otherwise stated.
Characteristics
Supply voltage
Supply current; PS25012A2
Supply current; PS25012B2
Input resistance (Rin)
Input capacitance
Voltage Gain (Av)
Coupling capacitance
Lower -3dB point
Upper -3dB point
Noise
Min.
4.0
2.7
5.4
Value
Typ.
50
10
50
250
Max.
8.0
10.0
20.0
0.05
4.0
tbd
Units
V
mA
mA
GΩ
pF
pF
Hz
kHz
Conditions/Notes
Each PS25202 sensor consumes
2.0mA (typ). The additional current
is consumed by the app’n board.
Sensor to skin
Electrical Connector
The PS25012A2 and PS25012B2 application boards are fitted with one or two five pin sockets. The connectivity of
these sockets is shown below:
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Output
Gnd
Supply
Gnd
Not used
The supply and ground connections of the two sockets on the dual channel PS25012B2 board are connected in
parallel so that the board will be active with either one or both connectors in use. However, when both sockets are
powered the supplied voltages must be identical.
Auxiliary Components
PS25000A
Control and Interface Box; 50Hz.
This box provides power for one or two sensors. It incorporates switchable low pass and 50Hz notch
filters. The box contains an amplifier with switchable gain of either x1 or x10. The box also generates
a differential signal from two sensors. The box incorporates a data acquisition card that provides the
data from the sensors via a USB cable to a computer. The box is powered by the USB connection. A
soft scope is provided with this box for display of the signals on a computer.
PS25001A
Control and Interface Box; 60Hz.
This box is identical to the PS25000A except that the switchable notch filter is preset to reject 60Hz.
PS25013
Adapter cable.
This 1.5m long cable connects the sockets of the PS25012A2 and PS25012B2 application boards to
the PS25000A or PS25001A Control and Interface Box.
For further information about this and other products, please visit:
www.plesseysemiconductors.com
Data Sheet 291502 Issue 1
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
2