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EVM Operation www.ti.com
Table 5 shows the jumper setting configuration for a capacitive load drive.
Table 5. Capacitive Load Drive Output Jumper Settings
Jumper Setting
Reference Function
Unipolar Bipolar
W3 Open Open V
REF
is disconnected from the inverting input of the output operational amplifier, U2.
Supplies power, V
SS
, to the negative rail of operational amplifier, U2, for bipolar mode, or ties it
W5 2-3 1-2
to AGND for unipolar mode.
Capacitive load drive output of DAC is routed to pin 1 of W15 jumper and can be used as the
W15 Open Open
output terminal.
3.5 Jumper Settings
Table 6 shows the function of each specific jumper setting of the EVM.
Table 6. Jumper Setting Functions
Jumper
Reference Function
Position
+5-V analog supply is selected for AV
DD
.
W1
+3.3-V analog supply is selected for AV
DD
.
Routes V
OUT
to J4-2.
W2
Routes V
OUT
to J4-6.
Disconnects V
REF
to the inverting input of the output operational amplifier, U2
W3
Connects V
REF
to the inverting input of the output operational amplifier, U2
Routes the adjustable, onboard +5-V reference or the fixed +4-V reference to the V
REF
input of the
DAC8560.
This is the default jumper position for DAC8560EVM because the +2.5-V internal reference is enabled
W4
by default.
Routes the user-supplied reference from TP1 or J4-20 to the V
REF
input of the DAC8560.
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.
CS signal from J2-1 is routed to drive the SYNC signal of the DAC8560.
W6
FSX signal from J2-7 is routed to drive the SYNC signal of the DAC8560.
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DAC8560 Evaluation Module SLAU211A–March 2007–Revised November 2009
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