Datasheet

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EVM Operation
Table 6. Jumper Setting Function (continued)
Reference Jumper Setting Function
Positive supply rail of operational amplifier is powered by 15 V.
W12
Positive supply rail of operational amplifier is powered by V
CC
.
Routes the raw output of the DAC7741 to J4-2 and J5 output terminals.
Routes the output of U2 to J4-2 and J5 output terminals. Used for unipolar and bipolar
W13
modes of operation.
Routes the output of U2 to J4-2 and J5 output terminals. Used for capacitive load driving.
Disconnects exREFin from the negative input terminal of U2.
W14
Allows exREFin to be routed to the negative input terminal of U2 used for experimentation
purposes only.
Disconnects the negative terminal of U2 to AGND and disables 2x gain.
W15
Configures U2 for a 2x gain output.
RSTSEL pin is pulled high and configures the DAC to mid-scale when POR or reset is
initiated.
W16
RSTSEL pin is pulled low and configures the DAC to min-scale when POR or reset is
initiated.
RST pin is pulled high and configures the DAC not to reset (default state).
W17
RST pin is pulled low and holds the DAC to reset state.
The U6 DIR control pin is tied high for direction flow from A-to-B.
W18
The U6 DIR control pin is tied low for direction flow from B-to-A.
The HPA449_ RST pin (via J3-13) is used to drive the RST signal.
W19
The DSP_ RST pin (via U10-11) is used to drive the RST signal.
U5 is disabled.
W20
U5 is enabled.
U6 is disabled.
W21
U6 is enabled.
R/ W is not routed through to control U6 direction pin, DIR.
W22
R/ W is routed through to control U6 direction pin, DIR.
DAC7741EVMSLAU093A – October 2002 – Revised May 2005 17