Xilinx ZC702 User Manual

ZC702 Board User Guide www.xilinx.com 65
UG850 (v1.7) March 27, 2019
Feature Descriptions
XADC Analog-to-Digital Converter
[Figure 1-2, callout 26]
The XC7Z020 SoC provides an Analog Front End XADC block. The XADC block includes a
dual 12-bit, 1 MSPS Analog-to-Digital Converter (ADC) and on-chip sensors. See the
7 Series FPGAs XADC Dual 12-Bit 1MSPS Analog-to-Digital Converter User Guide (UG480)
[Ref 9] for details on the capabilities of the analog front end. Figure 1-31 shows the XADC
block diagram.
The ZC702 board supports both the internal XC7Z020 SoC sensor measurements and the
external measurement capabilities of the XADC. Internal measurements of the die
temperature, VCCINT, VCCAUX, and VCCBRAM are available.
X-Ref Target - Figure 1-31
Figure 1-31: XADC Block Diagram
XC7Z020
SoC
U1
VAUX0N
VAUX0P
VAUX8N
VAUX8P
V
REF (1.25V)
V
REFN
VCCADC
GNDADC
V
N
V
P
DXP
DXN
UG850_c1_31_031819
100Ω
1 nF
100Ω
100Ω
1 nF
100Ω
To
Header
J49
Dual Use IO
(Analog/Digital)
100Ω
1 nF
100Ω
To
Header
J40
100 nF
XADC_AGND
REF3012
U29
Out In
Gnd
J37
XADC_AGND
Internal
Reference
To Header J40
10 μF
Ferrite Bead
Ferrite Bead
J9
J8
Star Grid
Connection
J70
XADC_VCC
XADC_AGND
GND
V
REFP
V
REFP
ADP123
U10
Out
In
Gnd
XADC_AGND
10 μF
XADC_VCC Header J40
100 nF
XADC_AGND
To J70.3
XADC_VCC
J38
Ferrite Bead
VCCAUX
VCC5V0
10 μF
VCC5V0 To Header J40
1.8V 150 mV max
J65
Filter 5V Supply
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Xilinx ZC702 Specifications

General

Brand	Xilinx
Model	ZC702
Category	Motherboard
Language	English