XP8600/XP8900
82 s Specifications
Table B-2. XP8900 Series Specifications
Board Size
2.835" × 4.00" × 0.75"
(72 mm × 102 mm × 19 mm)
Operating Temperature Range -40°C to +70°C
Humidity 5% to 95%, noncondensing
Power (quiescent, no output) 24 V DC, 30 mA
Outputs 8 D/A channels (4 channels for XP8910),
bipolar voltage output 0 V to ±10 V, can
source/sink up to 2 mA per channel on
internal power (up to 7 mA per channel
with user-supplied rails)
XP8900 Hardware Specifications
Table B-2 summarizes the specifications for the XP8900 Series expansion
boards.
The XP8900 Series expansion boards derive +5 V digital power from the
PLCBus supply via LM7805 at U6. When operating without user-supplied
external voltage rails, the XP8900 Series expansion boards get their +12 V
analog power from the PLCBus +24 V supply via LM7812 at U7. Charge
pump NJU7662 at U17 inverts this for onboard -12 V analog power.
Precision +5 V and + 2 V reference voltages are derived from the +12 V
supply via the REF195 at U2 and the voltage divider formed from R33,
R34, and R39. The n-channel FET FDV301N at Q1 is used to switch the
2V reference to 0 V during a power-on reset.
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