SI7013-A20 Datasheet, PDF (37/45 Pages) Silicon Laboratories – IC HUMIDITY AND TWO-ZONE TEMPERATURE SENSOR

7. Pin Descriptions: Si7013 (Top View)
Si7013-A20
Pin Name
SDA
Pin #
1
I²C data.
Pin Description
AD0/VOUT
GNDD
2
Dual function pin.
This pin can be switched high or low and is generally used to drive an external
thermistor interface.
On powerup, this pin acts as a device address select pin. Tie high or low to set device
address LSB.
See Figure 5 and Figure 6.
3
Digital ground. This pin is connected to ground on the circuit board.
GNDA
4
Analog ground. This pin is connected to ground on the circuit board.
VSNS
VINP
5
Voltage Sense Input. Tie to V_DD.*
6
Analog to digital converter positive input.
VINN
7
Analog to digital converter negative input.
VDDA
8
Analog power. This pin is connected to power on the circuit board.
VDDD
SCL
9
Digital power. This pin is connected to power on the circuit board.
10
I²C clock
T_GND
Paddle This pad is connected to GND internally. This pad is the main thermal input to the on-
chip temperature sensor. The paddle should be soldered to a floating pad.
*Note: VSNS must be high at power up or device will be held in reset.
Rev. 1.1
37