www.sensirion.com

Version 3 – August 2020

6/23

2 Electrical Specifications

2.1 Electrical Characteristics

Parameter

Symbol Conditions

Min

Typ.

Max

Units Comments

Supply voltage

2.15

3.3

5.5

V

-

Power-up/down level

1.8

2.1

2.15

V

-

Slew rate change of the

supply voltage

-

-

20

V/ms Voltage changes on the VDD

than the maximum slew rate;

faster slew rates may lead to

reset;

Supply current

Idle state

(single shot mode)

T= 25°C

-

0.2

12.0

µA

Current when sensor is not

performing a measurement

during single shot mode

Idle state

(single shot mode)

T= 125°C

-

-

6.0

Idle state

(periodic data acquisition

mode)

-

45

-

µA

Current when sensor is not

performing a measurement

during periodic data

acquisition mode

Measurement

-

600

1500

µA

Current consumption while

sensor is measuring

Average

-

1.7

-

µA

Average current

consumption (operation with

one measurement per

second at lowest

repeatability, single shot

mode)

Heater Power

Heater running

3.6

-

33

mW

Depending on the supply

voltage

Table 3: Electrical specifications, typical values are valid for T=25°C, min. & max. values for T=-40°C … 125°C.

2.2 Timing Specifications

Parameter

Symbol Conditions

Min.

Typ.

Max.

Units

Comments

Power-up time

-

0.5

1.5

ms

and sensor entering idle state

Soft reset time

After soft reset.

-

0.5

1.5

ms

Time between ACK of soft reset

command and sensor entering idle

state

Measurement duration

Low repeatability

-

2.5

4.5

ms

The three repeatability modes differ

with respect to measurement

duration, noise level and energy

consumption.

Medium repeatability

-

4.5

6.5

ms

High repeatability

-

12.5

15.5

ms

Table 4: System timing specifications, valid from -40 °C to 125 °C and VDDmin to VDDmax.