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3.1 Electrical Characteristics

Parameter

Symb

ol

Conditions

Min

Typ.

Max

Uni

ts

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

-

0.08

-

µA

-

Measurement

-

350

-

µA

Average current

consumption while

sensor is measuring

Aver., high repeatability

Aver., med. repeatability

Aver., low repeatability

-

-

-

2.3

1.2

0.4

-

-

-

µA

Aver. current consumpt.

(contin. operation with

one meas. per second)

Power consumpt.

at VDD=1.2V

(no heater)

-

Aver., high repeatability

Aver., med. repeatability

Aver., low repeatability

-

-

-

2.8

1.4

0.5

-

-

-

µW

Aver. power consumpt.

(contin. 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).