Jumper Setting
3-6
3.6
Jumper Setting
Table 3 - 6 shows the jumper setting configuration for a capacitive load drive.
Table 3 - 6. Jumper Setting Function
Reference
Jumper
Setting
Function
1
3
+5 V analog supply is selected for AV
DD
.
W1
1
3
+3.3 V analog supply is selected for AV
DD
.
1
3
Routes V
OUT
A to J4 - 2.
W2
1
3
Routes V
OUT
A to J4 - 10.
Disconnects V
REF
H to the inverting input of the output op amp, U2
W3
Connects V
REF
H to the inverting input of the output op amp, U2
1
3
Routes the adjustable, buffered, o5 V reference to the V
REF
H input of the
DAC8534.
W4
1
3
Routes the user supplied reference from TP1 or J4 - 20 to the V
REF
H input of the
DAC8534.
1
3
Negative supply rail of the output op amp, U2, is powered by V
SS
for bipolar operation.
W5
1
3
Negative supply rail of the output op amp, U2, is tied to AGND for unipolar operation.
1
3
V
REF
L is tied to AGND.
W6
1
3
Routes the user supplied negative reference from TP2 or J4 - 18 to the V
REF
L input of
the DAC8534. This voltage should be within the range of 0V to V
REF
H.
A0 pin is set high through pull-up resistor, R4. A0 can be driven by GPIO5.
W7
A0 pin is set low.
A1 pin is set high through pull-up resistor, R3. A1 can be driven by GPIO4.
W8
A1 pin is set low.
LDAC pin is set high through pull-up resistor, R2. LDAC can be driven by GPIO0.
W9
LDAC pin is set low and DAC update is accomplished via software.
EN pin is set high through pull-up resistor, R1. /EN can be driven by GPIO2.
W10
EN pin is set low and DAC is enabled.
1
3
Routes V
OUT
B to J4 - 4.
W11
1
3
Routes V
OUT
B to J4 - 12.