SDP31 datasheet(3/14 Pages) ETC2

3 / 14 page

www.sensirion.com

Version 0.8 – January 2017

3/14

2. Specifications

2.1

Electrical Specifications

Parameter

Symbol

Condition

Min.

Typ.

Max.

Units

Comments

Supply Voltage

VDD

3.0

3.3

For 5V supply contact

Sensirion

Power-up/down level

VPOR

2.3

2.5

2.7

VDD ramp up slew

VDD, ramp

0.2

V/ms

Minimum voltage

ramp up slew when

powering up SDP3x

Supply current

IDD

Measuring

3.8

5.5

Idle state

1.1

IRQn driving strength

2.2

Timing Specifications

Parameter

Symbol

Condition

Min.

Typ.

Max.

Units

Comments

Power-up time

tPU

Time to sensor ready

Soft reset time

tSR

Time between soft

reset command and

sensor ready

I2C SCL frequency

fI2C

400

1000

kHz

Update rate differential

pressure value

Continuous mode

900

1000

1100

Upgrade to 2kHz

expected in March

2017

Update rate

temperature value

Continuous mode

112.5

125

137.5

Temperature value is

updated once every

eight pressure values

Measurement time

Triggered mode

2.3

Mechanical Specifications

Parameter

Symbol

Condition

Min.

Typ.

Max.

Units

Comments

Allowable overpressure1

Pmax

bar

Rated burst pressure

Pburst

bar

Weight

0.2

2.4

Materials

Parameter

Wetted materials

Glass (silicon nitride, silicon oxide), LCP, green epoxy-based mold compound, epoxy-based resins

REACH, RoHS

REACH and RoHS compliant

2.5

Absolute Maximum Ratings

Parameter

Rating

Units

Supply Voltage VDD

-0.3 to 4.5

Max Voltage on pins SDA, SCL, IRQn

-0.3 to VDD+0.3

Input current on any pin

±70

Operating temperature range2

-40 to +85

°C

Storage temperature range3

-40 to +85

°C

Max. humidity for long term exposure

40°C dew point

ESD HBM (human body model)

1 Allowable overpressure during operation. Refer to the SDP selection guide for pressure dependency of the measured signal. Fast absolute pressure

changes on both ports can result in dynamic effects on the sensor signal. For higher overpressures or continuous high overpressures contact Sensirion.

For Air and N2. Long term exposure to high temperatures and (high concentrations of) O2 can reduce the product lifetime

For long term storage in Tape and Reel, please refer to the SDP3x handling instructions

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