Datasheet

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EVM Operation
Table 8. Jumper Setting Function
Reference Jumper Setting Function
LDAC driven by GPIO4 pin, J2-14.
W1
LDAC driven by GPIO0 pin, J2-2.
Routes DAC V
OUT
to J4-2.
W2
Routes DAC V
OUT
to J4-4.
Chip Enable pin driven by CS pin, J2-1.
W3
Chip Enable pin driven by FSX pin, J2-7.
LOAD driven by GPIO5 pin, J2-19.
W4
LOAD driven by GPIO1 pin, J2-6.
Negative supply rail of the output operational amplifier, U2, is powered by V
SS
for bipolar
operation.
W5
Negative supply rail of the output operational amplifier, U2, is tied to AGND for unipolar
operation.
V
OUT
is used for 4-mA to 20-mA operation to drive Q1.
W6 4-mA to 20-mA application is not used.
V
OUT
is used for 4-mA to 20-mA operation to drive U4A.
U4A is used to supply external voltage reference to the DAC7631 DUT.
W7
REF1 is used to supply external voltage reference to the DAC7631 DUT.
DAC7631EVM 14 SLAU148 – January 2005