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3.2.5 Analog Outputs, Bipolar - X5
Location Connector X5
Pins 19 7
Name AOUT0 AOUT1
Mint keyword AUXDAC.0 AUXDAC.1
Description Two independently controlled outputs.
Output range: ±10VDC.
Resolution: 8-bit
Output current: ±4mA maximum
Update interval: immediate, using Mint commands
The two analog 8-bit outputs AOUT0 and AOUT1 are not isolated and are primarily intended for system
debugging. Output voltages in the range of ±10V are achievable with a DC accuracy of better than 3%.
They are derived from a high-frequency PWM pulse train from the main processor, which is
subsequently filtered. These signals are buffered by an operational amplifier in the MintDrive and are
capable of sinking or sourcing up to ±4mA. The outputs are protected by fast Schottky diodes against
excessively high transitional voltages of either polarity.
AOUT0
(AUXDAC.0)
19
7
X5
Output 0
Output 1
20
GND
AOUT1
(AUXDAC.1)
Figure 14 - AOUT0 and AOUT1 analog outputs
CAUTION: Following power-up or a system reset, both outputs will initially be set at
approximately +10V. This condition will remain, for a short period of time during
the software initialization process.
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