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AMS101 Evaluation Card User Guide
UG886 (v1.3) November 6, 2013
Chapter 3:
AMS101 Evaluation Hardware
Use Case 3—Differential External Analog Source
Use Case 3 covers the case where you want to apply an external differential signal source
to the XADC positive and negative inputs.
Figure 3-7
shows a high level circuit diagram
for this use case.
X-Ref Target - Figure 3-6
Figure 3-6:
Use Case 2 Jumper Configurations for Single-Ended External Analog Source
Jumper J3
3
2
1
1
2
Jumper J5
Apply Negative Analog
Input Voltage with “Vn
Offset” Window in AMS
Evaluator
Apply Positive Analog
Input Signal to Pin 1
Ground
UG886_c3_06_081612
3
2
1
Triangle Near Jumpers Indicates Pin 1
Black Filled Boxes Indicate Jumper Position
Jumper J2
X-Ref Target - Figure 3-7
Figure 3-7:
Use Case 3 Circuit Diagram
DAC
A
DAC
B
VP/VAUX0P/VAUX
8
P
VN/VAUX0N/VAUX
8
N
UG
88
6_c
3
_07_092512
2
0
-Pin XADC He
a
der
Po
s
itive Extern
a
l
S
o
u
rce
Neg
a
tive
Extern
a
l
S
o
u
rce
