Datasheet

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3.6 Jumper Setting
1 3
1 3
1 3
1 3
1 3
1 3
1 3
1 3
1 3
1 3
1 3
1 3
Legend: Indicates the corresponding pins that are shorted or closed.
EVM Operation
Table 8 shows the function of each specific jumper setting of the EVM.
Table 8. Jumper Setting Function
Reference Jumper Setting Function
W1 +5-V analog supply is selected for AV
DD
.
+3.3-V analog supply is selected for AV
DD
.
W2 Routes V
OUT
A to J4-2.
Routes V
OUT
A to J4-6.
W3 Disconnects V
REF
H to the inverting input of the output operational amplifier, U2
Connects V
REF
H to the inverting input of the output operational amplifier, U2
W4 Routes the adjustable, buffered, onboard +5-V reference to the V
REF
H input of the
DAC8550/51/52.
Routes the user-supplied reference from U4 (if installed), TP1 or J4-20 to the V
REF
H input of
the DAC8550/51/52.
W5 Negative supply rail of the output operational amplifier, U2, is powered by V
SS
for bipolar
operation.
Negative supply rail of the output operational amplifier, U2, is tied to AGND for unipolar
operation.
W6 CS signal from J2-1 is routed to drive the SYNC signal of the DAC8550/51/52.
FSX signal from J2-7 is routed to drive the SYNC signal of the DAC8550/51/52.
W7 For DAC8550/51EVM, the V
FB
is routed out to minimize the output error. Remove R1 and short
W7 as shown; then connect V
FB
and V
OUT
A as close as possible to the load. The V
FB
signal is
then routed to J4-10.
For DAC8552EVM, R1 is not installed and W7 is shorted as shown so that V
OUT
B is routed to
J4-10 header terminal.
This is the default jumper position for DAC8550/51EVM when R1 is installed.
For DAC8550/51EVM, the V
FB
is routed out to minimize the output error. Remove R1 and short
W7 as shown; then connect V
FB
and V
OUT
A as close as possible to the load. The V
FB
signal is
then routed to J4-14.
For DAC8552EVM, R1 is not installed, and W7 is shorted as shown so that V
OUT
B is routed to
J4-14 header terminal.
W15 Disconnects the inverting input of the output operational amplifier, U2, from the gain resistor,
R12.
Connects the inverting input of the output operational amplifier, U2, to the gain resistor, R12,
for gain of 2 configuration.
SLAU172A – December 2005 – Revised September 2006 DAC8550/51/52 Evaluation Module 15
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