DNA-AO-318-020 Datasheet

03/15/2016 15:06
DNx-AO-318-020
8-Chan Isolated 0-20 mA D/A Board with BIT
• DNA- / DNR- / DNF-AO-318-020 for use in
“Cube” / RACKtangle /FLATRACK I/O chassis
• 8 independent fully isolated 16-bit DACs
• Built-in-test functionality monitors output voltage and
current
• 10 kHz per channel max update rate
10-Year
• 0 - 20 mA output range
Availability
Guarantee
• Simultaneous update across all channels
DNR-AO-318-020,
RACKtangle version shown
General Description:
The DNA-AO-318-020, DNR-AO-318-020 and DNF-AO-318-020 are
fully isolated, high-precision, 8-channel analog current output board
compatible with UEI’s popular “Cube”, RACKtangle and FLATRACK I/O
chassis respectively. The boards offer full 16-bit resolution and guarantee
monotonicity over the entire operating temperature range. Each DNxAO-318-020 channel provides an output range of 0-20 mA (sourcing)
and is capable of up to 400 Ohms. For applications requiring voltage
outputs please refer to the DNx-AO-308 or DNx-AO-318 series boards.
The DNx-AO-318-020 provides extensive built-in-test diagnostics. An onboard A/D converter on each channel allows the user to monitor both
output voltage and current. A solid state relay on each output allows the
D/A channel to be disconnected from the field I/O so that a complete
board self-test can be completed without driving the circuitry connected
to the outputs. This relay in combination with the output current and
voltage sensing can also be set to disconnect the D/A output in the event
of an external fault condition such as a short to ground or a DC power
supply.
All 8 channels may be configured to update simultaneously, or they may
be updated one at a time as data is written. A 1024 sample FIFO allows
each D/A to be updated at 10 kHz without data loss. Double buffering
the outputs combined with the use of low glitch D/As make the DNxAO-318-020 an ideal solution for generating low frequency waveforms
or providing highly accurate switched stimulus.
Software included with the DNx-AO-318-020 provides a comprehensive
yet easy to use API that supports all popular Windows programming
languages as well as supporting programmers using Linux and most realtime operating systems including QNX, RTX, VXworks and more. Finally,
the UEIDAQ Framework supplies complete support for those creating
applications in Windows data acquisition software packages such as
LabVIEW, MATLAB/Simulink, DASYLab or any application which supports
ActiveX or OPC servers.
Technical Specifications:
Number of Channels
Resolution
Max Update Rate:
Buffer Size
INL (no load)
DNL (no load)
Monotonicity Over Temp
Gain Linearity Error
Gain Calibration Error
Offset Calibration Error
Offset Drift
Gain Drift
Output Range
Settling Time
Load range
Isolation
Built-in Test
Voltage accuracy
Current accuracy
Sample rate
Power Consumption
Operating Temp. (tested)
Operating Humidity
Vibration IEC 60068-2-6
IEC 60068-2-64
Shock IEC 60068-2-27
8
16 bits
10 kHz/channel (80 kHz max aggregate)
1K samples (each channel)
±6 LSB (0.018%), typical
±2 LSB (0.006%), typical
16 bits guaranteed
0.002%
±2.5 µA typical,
±2.5 µA typical,
10 ppm/°C, typical
10 ppm/°C, typical
0-20mA
500 µs to 16 bits
0 to 470 Ohms for full 0-20 mA swing
350Vrms
MTBF
250,000 hours
+/- 25 mV
25 µA
Up to 20 Hz per channel total
4.5 Watt not including output load
-40°C to +85°C
0 - 95%, non-condensing
5 g, 10-500 Hz, sinusoidal
5 g (rms), 10-500Hz, broadband random
50 g, 3 ms half sine, 18 shocks @ 6 orientations
30 g, 11 ms half sine, 18 shocks @ 6 orientations
Block Diagram:
..
..
..
..
..
.
AOut 0+
AOut 0-
16-bit
D/A
Isolation
16-bit
D/A
DC/DC
Control
Logic
SRAM
32-bit 66-MHz bus
Analog Output Connector
AOut 7-
Control Logic
AOut 7+
Protection/Built-in Test
Isolation
Calibration
EEPROM
United Electronic Industries, Inc.
Tel: (508) 921-4600
1
http://www.ueidaq.com
Fax: (508) 668-2350
Simplified output schematic:
Pinout Diagram:
Isolation
D/A &
Buffer
FPGA
&
Control
Logic
Current
Sense
Resistor
I out
Voltage
and Current
Monitor
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Aout 7 Gnd
Aout 6
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Aout 5 Gnd
Aout 4
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Aout 3 Gnd
Aout 2
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Aout 1 Gnd
Aout 0
Rsvd
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
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Aout 7
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Aout 6 Gnd
Aout 5
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Aout 4 Gnd
Aout 3
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Aout 2 Gnd
Aout 1
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Aout 0 Gnd
Connection options:
Cable
DNA-CBL-37 series
Screw Terminal Panel
DNA-STP-37
United Electronic Industries, Inc.
Tel: (508) 921-4600
Description
37 conductor screw terminal panel connects to board via DNA-CBL-37 or 37S series cables.
2
http://www.ueidaq.com
Fax: (508) 668-2350
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