Datasheet

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1
EVM Operation
Table 3. Factory Default Jumper Setting
Reference Jumper Position Function
W1 1-2 Analog supply for the DAC8550/51/52 is +5 VA.
W2 1-2 DAC output A (V
OUT
A) is routed to J4-2.
W3 OPEN V
REF
H is not routed to the inverting input of the operational amplifier for voltage offset with gain
of 2 output (for bipolar mode of operation).
W4 1-2 Onboard external buffered reference U3 is routed to V
REF
H.
W5 1-2 Negative supply rail of U2 operational amplifier is supplied with V
SS
.
W6 1-2 CS signal from J2 is used for frame synchronization, SYNC, signal.
W7 OPEN For DAC8550/51 EVM, the V
FB
is not routed out unless there is a need to minimize the output
error. If using W7, remove R1 and short W7; then connect V
FB
and V
OUT
A as close as possible
to the load.
1-2 For DAC8552 EVM, R1 is not installed and W7 is shorted so that V
OUT
B is routed to J4-10
header terminal.
2-3 For DAC8552 EVM, R1 is not installed, and W7 is shorted so that V
OUT
B is routed to J4-14
header terminal.
W15 CLOSE Output operational amplifier, U2, is configured for a gain of 2.
J4 2-1 DAC output A (V
OUT
A) is connected to the non-inverting input of the output operational amplifier,
U2.
Figure 10. DAC8550/51 EVM Default Jumper Configuration
SLAU172A – December 2005 – Revised September 2006 DAC8550/51/52 Evaluation Module 11
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