101-0440 Rabbit Semiconductor, 101-0440 Datasheet - Page 105

• Manufacturer Part Number: 101-0440
• Description: CARD 8-RELAYS SR9510 SMARTSTAR
• Manufacturer: Rabbit Semiconductor

Specifications of 101-0440

• Accessory Type: Smart Star Relay Card
• For Use With/related Products: SR9150
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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