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Version 2

– July 2021

7/17

3.1 Electrical Characteristics

Parameter

Sym

bol

Conditions

Min

Typ

Max

Unit

Comments

Supply

voltage

VDD

1.08

3.3

3.6

V

-

Power-

up/down level

VPOR

Static power

supply

0.6

-

1.08

V

-

Supply current

(no heater)

IDD

Idle state

-

-

0.1

-

1.0

3.4

µA

At 25°C

At 125°C

Measurement

-

350

500

µA

Current while sensor is

measuring

Aver., high

repeatability

Aver., med.

repeatability

Aver., low

repeatability

-

-

-

2.4

1.3

0.4

-

-

-

µA

Aver. current consumption

(continuous operation with one

meas. per second)

Power

consumpt. at

VDD=1.2V

(no heater)

-

Aver., high

repeatability

Aver., med.

repeatability

Aver., low

repeatability

-

-

-

2.9

1.6

0.5

-

-

-

µW

Aver. power consumption

(continuous operation with one

meas. per second)

Low level

input voltage

VIL

-

0

-

0.3*

VDD

V

-

High level

input voltage

VIH

-

0.7*

VDD

-

VDD

V

-

Pull up

resistors

Rp

VDD < 1.62 V

820

-

-

Ω

-

VDD

≥ 1.62 V

390

-

-

Ω

-

Low level

output voltage

VOL

VDD < 1.62V,

Rpullup

> 820 Ω

-

-

0.2*

VDD

V

-

VDD

= 1.62V …

2.0V,

Rpullup

> 390 Ω

-

-

0.2*

VDD

V

-

VDD > 2.0V,

Rpullup

> 390 Ω

-

-

0.4

V

-

Cap bus load

Cb

RP

≤ 820 Ω: fast

mode

-

-

400

pF

Capac. bus load can be

determined from

Cb < trise /(0.8473*Rp).

Rise times are trise = 300 ns for

fast mode and trise = 120 ns for

fast mode plus

Rp

= 390 Ω,

VDD > 1.62 V: fast

mode plus

-

-

340

pF

Table 3: Electrical specifications.

3.2 Timings

Max. values are measured at -40°C and 1.08 V supply voltage (based on characterization).