Datasheet

Data Sheet AD5522
Rev. E | Page 19 of 64
PIN 1
AD5522
TOP VIEW
EXPOSED PAD ON TOP
(Not to Scale)
1
AVDD
2
CFF0
3
CCOMP0
4
EXTMEASIH0
5
EXTMEASIL0
6
FOH0
7
GUARD0
8
GUARDIN0/DUTGND0
9
MEASVH0
10
AGND
11
AGND
12
MEASVH2
13
GUARDIN2/DUTGND2
14
GUARD2
15
FOH2
16
EXTMEASIL2
17
EXTMEASIH2
18
CCOMP2
19
CFF2
20
AVDD
21
EXTFOH2
22
AVSS
23
BUSY
24
SCLK
25
CPOL0/SCLK
26
CPOH0/SDI
27
SDI
28
SYNC
29
CPOL1/SYNC
30
DGND
31
CPOH1/SDO
SDO
32 33
LOAD
34
DVCC
35
CPOL2/CPO0
36
CPOH2/CPO1
37
CPOL3/CPO2
38
CPOH3/CPO3
39
AVSS
40
EXTFOH3
61
EXTFOH1
62
AVSS
63
MEASOUT3
64
MEASOUT2
65
MEASOUT1
66
MEASOUT0
67
AVSS
68
SYS_FORCE
69
AGND
70
SYS_SENSE
71
REFGND
72
VREF
73
DUTGND
74
AVDD
75
SPI/LVDS
76
CGALM
77
TMPALM
78
RESET
79
AVSS
80
EXTFOH0
41
AVDD
42
CFF3
43
CCOMP3
44
EXTMEASIH3
45
EXTMEASIL3
46
FOH3
47
GUARD3
48
GUARDIN3/DUTGND3
49
MEASVH3
50
AGND
51
AGND
52
MEASVH1
53
GUARDIN1/DUTGND1
54
GUARD1
55
FOH1
56
EXTMEASIL1
57
EXTMEASIH1
58
CCOMP1
59
CFF1
60
AVDD
06197-009
NOTES
1. THE EXPOSED PAD IS ELECTRICALLY CONNECTED TO AVSS.
Figure 9. Pin Configuration, Exposed Pad on Top
Table 7. Pin Function Descriptions
Pin No. Mnemonic Description
Exposed pad The exposed pad is electrically connected to AVSS.
1 EXTFOH0 Force Output for High Current Range (Channel 0). Use an external resistor at this pin for current ranges up to
±80 mA. For more information, see the Current Range Selection section.
2, 14, 19,
42, 59
AVSS Negative Analog Supply Voltage.
3
RESET
Digital Reset Input. This active low, level sensitive input resets all internal nodes on the device to their power-
on reset values.
4
TMPALM
Open-Drain Output for Temperature Alarm. This latched, active low, open-drain output flags a temperature
alarm to indicate that the junction temperature has exceeded the default temperature setting (130°C) or the
user programmed temperature setting. Two flags in the alarm status register (one latched, one unlatched)
indicate whether the temperature has dropped below 130°C or remains above 130°C. User action is required
to clear this latched alarm flag by writing to the clear bit (Bit 6) in any of the PMU registers.
5
CGALM
Open-Drain Output for Guard and Clamp Alarms. This open-drain pin provides shared alarm information
about the guard amplifier and clamp circuitry. By default, this output pin is disabled. The system control
register allows the user to enable this function and to set the open-drain output as a latched output. The user
can also choose to enable alarms for the guard amplifier, the clamp circuitry, or both. When this pin flags an
alarm, the origins of the alarm can be determined by reading back the alarm status register. Two flags per
channel in this word (one latched, one unlatched) indicate which function caused the alarm and whether the
alarm is still present.