AD5100
Rev. A | Page 9 of 36
0
569
2-
0
03
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
V
1MON
1
GND
2
NC = NO CONNECT
V
OTP
3
V
3MON
4
V
2MON
16
GND/NC
15
V
4MON
14
MR
5
AD0
13
WDI
6
SHDN
12
SCL
7
SHDNWARN
11
V
4OUT
10
SDA
8
RESET
9
AD5100
TOP VIEW
(Not to Scale)
Figure 3. Pin Configuration
Table 5. AD5100 Pin Function Descriptions
Pin No.
Mnemonic
Description
1 V
1MON
High Voltage Monitoring Input. AD5100 internal supply is derived from V
1MON
. There must be a 10 μF electrolytic
capacitor between this pin and GND, placed as close as possible to the V
1MON
pin.
2 GND Ground.
3 V
OTP
One-Time Programmable Supply Voltage for EPROM. A 10 μF decoupling capacitor (low ESR) to GND is required.
4 V
3MON
Low Voltage Monitoring Input.
5
MR
Manual Reset Input. Active low.
6 WDI Watchdog
Input.
7 SCL
I
2
C Serial Input Register Clock. Open-drain input. If it is driven directly from a logic driver without the pull-up
resistor, ensure that the V
IH
minimum is 3.3 V.
8 SDA I
2
C Serial Data Input/Output. Open-drain input/output. If it is driven directly from a logic driver without the pull-
up resistor, ensure that the V
IH
minimum is 3.3 V.
9
RESET
Reset. Push-pull output with rail voltage of V
3MON
.
10 V
4OUT
Open-Drain Output. Triggered by V
4MON
.
11
SHDNWARN
Shutdown Warning. Active low, open-drain output.
12
SHDN
Shutdown Output. Push-pull output with selectable rail voltage of V
1MON
or V
REG
, the AD5100 internal power (30 V
maximum).
13 AD0
I
2
C Slave Address Configuration. If tied high, this pin can only be tied to 3.3 V maximum.
14 V
4MON
Low Voltage Monitoring Input. Capable of withstanding 30 V.
15
GND/NC
Ground/No Connect. Can be grounded or left floating but do not connect to any other potentials.
16 V
2MON
High Voltage Monitoring Input. It is also the internal supply voltage enabling input.
05
69
2-
00
4
1
2
3
4
16
15
14
5
13
6
12
7
11
10
8
9
AD5100
TOP VIEW
(Not to Scale)
GND
Figure 4. Recommended PCB Layout for Shielded High Voltage Inputs
