Analog Devices EVAL-AD4115SDZ, User Manual

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UG-1820 EVAL-AD4115SDZ User Guide
Rev. 0 | Page 20 of 24
POWER SUPPLY
SHORT: +VA_ISO = 3.3V
R35 SETS THE ISOLATED REGUALTOR
OUTPUT VOLTAGE
OPEN: +VA_ISO = 5V
ISOLATION
ISOLATION AND POWER SUPPLY CIRCUTY ARE BASED OF
AN EMC DESIGN. MORE DETAILS CAN BE FOUND IN AN-1572
24
23
DNI
J13
R40
4.7MEG 4.7MEG
C39
1UF C38
ADUM5411BRSZ
C42
4.7NF
0.1UF
7
C49
GND_ISO
4
CS
R28
33
R29
R30
33 +5V
0.1UF
33
GND_ADUM
10
1
1
_GND
GNDISO
R38
R35
R36
C44
PWR
R41
C48 C47 C46 C45
C40
C43
C41
C37 C36
R37
D18
C50
R39
C52 C51
3
2
1
LK3
3
2
1
J4
_MISO _MOSI _CS _SCLK
R34
R33
R32
R31
R27
GND1
B1
B2
B3
B5
B6
B4
15
6
20
21
22
14
19
5
3
18
11
1
17 8
16
13 12
9
2
U3
S
M
A
J5.
0A
-T
R
1K
V_USB
MISO
0.1UF
V_IO
GND_ISO
MOSI_ISO
CS_ISO
GND_ISO
DNI DNI
10UF
33
1UF
MOSI
33
GND_ADUM
DNI
33
4.7NF
GND_ISO
0.1UF
33
DNI
10UF
GND_ISO
+VA_ISO
SCLK_ISO
10UF
SCLK
V_SEL
14K
16.9K
10K
4.7NF
CHGND2
DNI
+VA_ISO
GND_ADUM
V_SEL
+VA_ISO
+5V
MISO_ISO
CHGND1
DNI
33
IN
IN
OUT
OUT
OUT
OUT
IN
IN
IN
IN
VDD2
GNDISO
VOA
VOB
VOC
VID
VE2
NIC
GNDISO
VSEL
VISO
GNDISO GND1
VDDP
PDIS
GND1
NIC
VE1
VOD
VIC
VIB
VIA
GND1
VDD1
23999-
024
Figure 24. Insulation and Power Supply Schematic