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REV. A
–6–
AD5520
PIN CONFIGURATION
64-Lead LQFP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
AD5520
(Not to Scale)
CPL
CPH
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
NC = NO CONNECT
DV
DD
CPOH
CPOL
CPCK
DGND
CLHDETECT
QM4
QM5
MOE
AC0
AC1
D
D
D
A
A
A
S
F
M
C
A
E
A
C
A
A
E
G
N
G
AV
CC_G
MEASVL
GUARD(NC)
MEASVH
MEASIL
MEASI0H
FOH0
MEASI1H
FOH1
MEASI2H
FOH2
MEASI3H
FOH3
MEASI4H
MEASI5H
AV
EE_B
F
A
C
C
C
C
C
C
C
R
M
R
M
M
F
C
C
CLLDETECT
CS
STB
PIN FUNCTION DESCRIPTIONS
Pin No.
1
2
3, 18
4
5
6
7, 17
8
9
10
Mnemonic
CPH
CPL
DV
DD
CPOH
CPOL
CPCK
DGND
CLHDETECT
CLLDETECT
QM4
Description
Upper Comparator Threshold Voltage Input, CPH > CPL.
Lower Comparator Threshold Voltage Input, CPL < CPH.
Digital Supply Voltage.
Logic Output. When high, indicates MEASVOUT or MEASIOUT > CPH.
Logic Output. When high, indicates MEASVOUT or MEASIOUT < CPL.
Logic Input. Used to initiate comparator sampling and update CPOH and CPOL.
Digital Ground.
Logic Output. When high, indicates upper clamp active. For details, see the Clamp Function section.
Logic Output. When high, indicates lower clamp active. For details, see the Clamp Function section.
Logic Output. When high, indicates current range Mode 4 is enabled. May be used to drive external
relay or switch. For details, see the High Current Ranges section.
Logic Output. When high, indicates current range Mode 5 is enabled. May be used to drive external
relay or switch. For details, see the High Current Ranges section.
Active Low MEASOUT Enable.
Active Low Logic Input. The device is selected when this pin is low. For details, see the Interface
section.
Active Low Logic Input. Used in conjunction with CPCK and
CS
to configure the device for differ-
ent configurations. Rising edge of
STB
triggers sequence inputs. For details, see the Interface section.
Logic Input. Used in conjunction with AC1 to select one of three external compensation capacitors.
For details, see the Force Control Amplifier section.
Logic Input. Used in conjunction with AC0 to select one of three external compensation capacitors.
For details, see the Force Control Amplifier section.
11
QM5
12
13
MOE
CS
14
STB
15
AC0
16
AC1
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