6
DPS70
Inputs
The DPS70 has digital, frequency, and analog inputs.
Damage to equipment!
Do not connect inputs directly to unprotected
inductive loads such as solenoids or relay coils, as these can produce
high voltage spikes that may damage the DPS70. If an inductive load
must be connected to an input, use a protective diode or transorb.
2.1. Analog Inputs
The DPS70 has 10 analog inputs, Analog Input 1 to Analog Input 10. All of the
analog inputs are biased to a midpoint with pull-up resistor. This allows them to
be used as a tri-state input.
2.1.1. Analog Input Capabilities
The following table provides specifications for the analog inputs:
Analog Input Specifications
Item
Min
Nom
Max
Unit
Input voltage range
0
6.6
V
Input pin capacitance
.05
µF
Pull-up/down resistance
10
k
Response to step change
5
ms
Over-voltage
36
V
ADC reference voltage
3.3
V
Resolution - 10 bit ADC
3.2
mV
Offset error
50
mV
Drift error
±1
%
Open Load Voltage with 10k pull-up
1.36
1.46
1.56
V
2. Inputs
