101-0444 Rabbit Semiconductor, 101-0444 Datasheet - Page 105
101-0444
Manufacturer Part Number
101-0444
Description
CARD A/D 4-20MA SR9320 SMARTSTAR
Manufacturer
Rabbit Semiconductor
Datasheet
1.101-0437.pdf
(184 pages)
Specifications of 101-0444
Accessory Type
RabbitNet A/D Card
For Use With/related Products
SR9320
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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9.4 Power Distribution
Figure 42 shows the power distribution on the D/A Converter Card.
Figure 42. D/A Converter Card Power Distribution
Figure 43 shows the power supply for the op-amps used as voltage amplifiers/current
sources.
Figure 43. Op-Amp Power Supplies
There is provision in software using the anaOutDisable or the anaOutEnable func-
tion calls to turn the regulated ±12 V power supply off or on since pin 5 on U1 is connected
to PE7 on the Rabbit 2000 microprocessor on the backplane. This type of disabling/enabling
allows the analog output channels to float in a high-impedance state.
The voltage regulator on/off is disabled by default when there is a reset or when the D/A
Converter Card is first used. All output channels must be configured to the required volt-
age or current outputs before calling the anaOutEnable function since unconfigured
channels are automatically set to the maximum output.
The –12 V supply is provided only for the SR9410, which provides analog outputs up to ±10 V.
User’s Manual
105
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