The Signal Conditioning Wildcard is used with the Analog I/O Wildcard to increase its input and output voltage range and to add 4-20 mA current input and output capability.
The Signal Conditioning Wildcard amplifies four DAC outputs on the Analog I/O Wildcard to provide 0 to 10V outputs and attenuates four A/D inputs to allow voltages up to 10 volts. It also converts the other four DAC outputs on the Analog I/O Wildcard to 0 to 20 mA outputs and converts the other four A/D inputs to 0 to 20 mA inputs.
This Wildcard is easily customized for other input/output voltage or current ranges.
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Input Channels
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4 unipolar single-ended; pairs of channels may be
used for differential input
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Resolution
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16-bits ( 0 - 65,535 counts)
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Input Voltage Range
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0 to 10.24 V is converted to 0-2.048 V presented to
the Analog I/O Wildcard
(range customizable by component substitution)
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Input Filtering
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Single-pole 265 Hz low-pass filter, reconfigurable by
component substitution
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Input Impedance
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376
KΩ
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Offset and Scale Errors
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±0.1%
of FS offset error and ±1-2% of FS gain error are added to any A/D offset and
gain errors
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Output Channels
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4
unipolar single-ended
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Resolution
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12-bits
( 0 - 4095 counts)
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Full Scale
Output Voltage
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0
to 10.24 V is produced from 0-4.096 V provided by the Analog I/O Wildcard
(range customizable by component substitution)
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Settling Time
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300
msec typically, slew rate is 0.1V/msec
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Allowed Load Resistance
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≥1KΩ, Op-amp
output sources and sinks up to 10 mA, sink current limited at Vo=0
by 39Ω output resistance.
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Offset and Scale Errors
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±0.05%
of FS offset error and ±1-2% of FS gain error are added to any A/D offset and
gain errors
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Input Channels
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4 unipolar single-ended current sinks
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Resolution
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16-bits ( 0 - 65,535 counts)
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Input Current Range
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0 to 20.48 mA is converted to 0-2.048 V presented to
the Analog I/O Wildcard
(range customizable by component substitution)
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Input Protection
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Protected to -30V, +15V, or +100 mA steady state
input
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Input Resistance
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200
Ω (for up to 50 mA input, dynamic resistance drops toward 100 Ω
for greater currents)
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Offset and Scale Errors
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No
offset error and ±1% of FS gain error is added to any A/D offset and gain
errors
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Output Channels
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4
unipolar single-ended current sources
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Resolution
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12-bits
( 0 - 4095 counts)
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Output Current Range
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0
to 20.48 mA is produced from 0-4.096 V provided by the Analog I/O Wildcard
(range customizable by component substitution)
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Output Compliance
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Up
to 10V
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Allowed Load Resistance
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Any
resistance ≤ 500Ω
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Offset and Scale Errors
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±0.04
mA offset error, ±0.05 mA/V compliance error, and ±1% typ gain error added to
DAC offset and gain errors.
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