www.ti.com
1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
EVM Operation
Table 7. Jumper Settings and Functions (continued)
Reference
Jumper Setting
(1)
Function
RST pin is set high through pull-up resistor R4. RST can be driven by GPIO5, J2-19.
JMP4
RST pin is set low.
Disconnects V
REF
H to the inverting input of the op amp U2.
JMP5
Connects V
REF
H to the inverting input of the op amp U2.
Disconnects the inverting input of the op amp U2 from the gain resistor, R9.
JMP6
Connects the inverting input of the op amp U2 from the gain resistor, R9 for output gain of
2.
+5V analog supply is selected for AV
DD
.
JMP7
+3.3V analog supply is selected for AV
DD
.
Routes the adjustable, buffered, o5V reference to the V
REF
H input of the
DAC8555.
JMP8
Routes the user-supplied reference from TP2 or J4-20 to the V
REF
H input of the
DAC8555.
V
REF
L is tied to AGND.
JMP9
Routes the user-supplied negative reference from TP3 or J4-18 to the V
REF
L input of the
DAC8555. This voltage should be within the range of 0V to V
REF
H.
Negative supply rail of the op amp U2 is powered by V
SS
for bipolar operation.
JMP10
Negative supply rail of the op amp U2 is tied to AGND for unipolar operation.
Routes V
OUT
A to J4-2.
JMP11
Routes V
OUT
A to J4-10.
20
DAC8555EVM User's Guide
SLAU204 – December 2006
Submit Documentation Feedback
