SI7022-A20 Datasheet, PDF (4/25 Pages) Silicon Laboratories – HUMIDITY/TEMPERATURE SENSOR WITH PWM OUTPUT

Si7022-A20
1. Electrical Specifications
Unless otherwise specified, all min/max specifications apply over the recommended operating conditions.
Table 1. Recommended Operating Conditions
Parameter
Power Supply
Symbol Test Condition
Min
Typ
VDD
1.9
—
Operating Temperature
TA
–40
—
Max
Unit
3.6
V
+125
°C
Table 2. General Specifications
1.9 < VDD < 3.6 V; TA = –40 to 125 °C unless otherwise noted.
Parameter
Symbol
Test Condition
Min
Typ
Max Unit
Input Voltage High
V_IH
Input Voltage Low
VIL
SELECT pin
SELECT pin
0.7xVDD
—
—
V
—
—
0.3xVDD V
Input Voltage Range VIN
SELECT pin with respect to GND
0.0
—
VDD
V
Input Leakage
IIL
SELECT pin
—
—
1
μA
Output Voltage High VOH
PWM1, PWM2 pins, IOH = –10 μA VDD – 0.1
—
—
V
PWM1, PWM2 pins pin,
VDD – 0.2
—
—
IOH = –0.5 mA, VDD = 2.0 V
PWM1, PWM2 pins,
VDD – 0.4
—
—
IOH = –1.7 mA, VDD = 3.0 V
Output Voltage Low VOL
PWM1, PWM2 pins; IOL = 2.5 mA;
—
VDD = 3.3 V
—
0.6
V
PWM1, PWM2 pins; IOL = 1.2 mA;
—
VDD = 1.9 V
—
0.4
V
Sample Rate
RH and Temperature
—
2
—
Hz
Current
IDD
Consumption
Average Current
—
150
300
μA
Powerup Time
t_PU
From VDD ≥ 1.9 V to PWM output
—
enabled, 25 °C
From VDD ≥ 1.9 V to PWM output
—
enabled, full temperature range
48
55
ms
—
110
4
Rev. 1.1