Datasheet
Data Sheet ADT7420
Rev. 0 | Page 7 of 24
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
12
17 EP
11
10
1
3
4
V
DD
GND
CT
9
INT
SCL
A0
2
SDA
A1
6
NC
5
NC
7
NC
8
NC
16
NC
15
NC
14
NC
13
NC
TOP VIEW
(Not to Scale)
NOTES
1. NC = NO CONNE
C
T. THE NC PIN IS NOT
BONDED TO THE DIE INTERNALLY.
2
. TO ENSURE CORRECT OPERATION, THE
EXPOSED PAD SHOULD EITHER BE LEFT
FLOATING OR CONNECTED TO GROUND.
09013-004
ADT7420
Figure 3. Pin Configuration
Table 4. Pin Function Descriptions
Pin No. Mnemonic Description
1 SCL
I
2
C Serial Clock Input. The serial clock is used to clock in and clock out data to and from any register of the ADT7420.
Open-drain configuration. A pull-up resistor is required, typically 10 kΩ.
2 SDA
I
2
C Serial Data Input/Output. Serial data to and from the part is provided on this pin. Open-drain configuration. A
pull-up resistor is required, typically 10 kΩ.
3 A0 I
2
C Serial Bus Address Selection Pin. Logic input. Connect to GND or V
DD
to set an I
2
C address.
4 A1 I
2
C Serial Bus Address Selection Pin. Logic input. Connect to GND or V
DD
to set an I
2
C address.
5 NC No Connect. The NC pin is not bonded to the die internally.
6 NC No Connect. The NC pin is not bonded to the die internally.
7 NC No Connect. The NC pin is not bonded to the die internally.
8 NC No Connect. The NC pin is not bonded to the die internally.
9 INT
Overtemperature and Undertemperature Indicator. Logic output. Power-up default setting is as an active low
comparator interrupt. Open-drain configuration. A pull-up resistor is required, typically 10 kΩ.
10 CT
Critical Overtemperature Indicator. Logic output. Power-up default polarity is active low. Open-drain configuration.
A pull-up resistor is required, typically 10 kΩ.
11 GND Analog and Digital Ground.
12 V
DD
Positive Supply Voltage (2.7 V to 5.5 V). The supply should be decoupled with a 0.1 μF ceramic capacitor to ground.
13 NC No Connect. The NC pin is not bonded to the die internally.
14 NC No Connect. The NC pin is not bonded to the die internally.
15 NC No Connect. The NC pin is not bonded to the die internally.
16 NC No Connect. The NC pin is not bonded to the die internally.
17 EP Exposed Pad. To ensure correct operation, the exposed pad should either be left floating or connected to ground.