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Analog Output Module
8 Point Analog Current-Source Output Module
GFK-1376C
October 1999
Module Specifications
Module Characteristics
Number of channels (single ended)
Power supply range (see note 1)
Operating temperature range
Isolation to ground and logic
Current Drawn from BIU power
supply
Current Drawn from external power
supply
Output Characteristics
8
18 to 30VDC, 24VDC typical. 10% maximum ripple
0 to 55 degrees C ambient
1500 VAC for 1 minute, 250VAC continuous
85mA maximum
250 mA maximum (with all 8 outputs at 20mA)
Resolution
16 bits
Magnitude data size
14 bits
Accuracy (see note 4):
at 25deg. C
from 0 to +55deg. C
Output Current Range Limits: 0 to 20
(overrange)
Analog resolution
Output load capacitance
Output load inductance
User Load (dependent on temperature and
power supply voltage. See notes 2 and 3)
Update time
Open wire output current threshold
0.05% typical, 0.1% maximum
0.15%
0.0 to 20.48mA
0.3125µA per count, maximum resolution
2000pF maximum
0.5H maximum
0 to 1250 Ohms
1.5mS typical
1.0mA minimum, 3.5mA maximum
note 1: External power supply maximum voltage is dependent on temperature and user load.
note 2: Thermal (operating temperature) and user load derating curves apply. See below.
note 3: (Vuser - 5VDC) / 20 mA = RL(max)
note 4: In the presence of severe RF interference (IEC 801-3, 10V/m), accuracy may be degraded
to ±0.5% tolerance.
Thermal Derating Curves
The chart below shows the minimum load in ohms at temperatures from 40 degrees to 55 degrees
Celsius for user input power supply voltages of 18V, 24V, and 30V. If output load impedance is
less than the minimum required, additional series resistance must be added.
800
700
600
500
400
300
200
100
0
30V
24V
18V
35
40
45
50
Load Required
in Ohms
55
Temperature in Degrees C
GFK-0826J
Chapter 24 8 Point Current-Source Analog Output Module IC670ALG330
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