29
IQAN-MD3 Technical Overview
Appendix A
Instruction book, IQAN-MD3
Recommended Operating Conditions
1
1.Recommended operating conditions are given for maximum and minimum conditions where nor-
mal performance is still available from the device. Once the normal operating conditions are ex-
ceeded, the performance of the device may suffer.
Parameter
Limit values
Unit
Remark
min.
typ.
max.
Ambient temperature,
T
A
– 30
+60
°C
When the unit detects an
internal temperature that
exceeds -25°C to +75°C the
LCD will be turned off to
reduce the risk for permanent
damage of the LCD. When
turned off the backlight will be
used as an indicator with a
heart-beat:
When the temperature nor-
malizes (within -20°C to
+70°C) the LCD will be turned
on automatically.
Voltage supply,
V
BAT
11
32
V
System
T
A
= +25 °C (unless otherwise specified)
Parameter
Limit values
Unit
Remark
min.
typ.
max.
Start-up delay
350
ms
Power to activated output
System cycle time,
T
sc
10
100
ms
Sample rate local I/O
10
100
ms
System cycle time
Output voltage on VREF
4.95
5.00
5.05
V
When load < 50mA
Load current on VREF
150
mA
Current supply
V
BAT
=14V
V
BAT
=28V
190
130
mA
outputs = off
no load on VREF
Current supply RTC
+RTC
=14V
+RTC
=28V
4
8
mA
Same supply current for
V
BAT
=0V or V
BAT
> 11V
RTC power backup
2
14
days
Weight
270
g
