DAQ93P03 Datasheet, PDF (4/5 Pages) List of Unclassifed Manufacturers – 6 channel mechanical and proximity sensor interface circuit

DAQ93P03
DAQCHINA INDUSTRIAL AUTOMATION
Website: www.daqchina.net
Email:
[e-mail]
DAQ93P03 Data Sheet Edition 1.0/03/04
6 channel mechanical and proximity sensor interface circuit
Block Function
Above picture shows external proximity switch sensors connect to the DAQ93P03 whereby the sensors are
commonly power supplied with 8volts regulated PSU and return signals are directly feed into each input
channel of the chip. For mechanical switches, the power supply is recommended to 5Volts.
Caution
The impedance of each channel is 700 ohm. Zenor diodes are not mandatory for low power supplied sensors,
but highly recommended for high power supplied sensors eg.15volts and above. As 3volts can be effectively
identified as high level to the DAQ93P03, medium sized 5volts zenors are acceptable for the purpose of
input protection.