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SENSIRION

SDP31 Datasheet Preview

SDP31 Datasheet

Digital Differential Pressure Sensor

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Datasheet SDP3x-Digital
Digital Differential Pressure Sensor
Smallest size enables portable applications
Reflow solderable Pick & Place
Excellent repeatability, no drift, no offset
Extended feature set smart averaging
Calibrated and temperature compensated
Product Summary
The SDP3x sensor family is Sensirion’s series of small differential pressure sensors designed for high-volume applications
where size is a key requirement. It builds on the next generation CMOSens® sensor chip that is at the heart of Sensirion’s
new differential pressure and flow sensing platform.
The digital SDP3x sensor features fast measurement speed, excellent accuracy and long-term stability and has no zero-point
drift. Furthermore, it is reflow solderable and provides extended functionality, such as smart averaging, multiple temperature
compensation modes, configurable I2C address and interrupts.
Benefits of Sensirion’s CMOSens® Technology
High reliability and long-term stability
Best signal-to-noise ratio
Industry-proven technology with a track record of more
than 15 years
Designed for mass production
High process capability
Content
1. Sensor Performance.............................................................. 2
2. Specifications......................................................................... 3
3. Pin Assignment...................................................................... 4
4. Measurement Modes ............................................................. 5
5. Digital Interface Description ................................................... 6
6. Package Outline................................................................... 11
7. Soldering.............................................................................. 12
8. Shipping Package................................................................ 13
9. Ordering Information ............................................................ 13
Revision History............................................................................ 13
Important Notices ......................................................................... 14
Headquarters and Subsidiaries .................................................... 14
www.sensirion.com
Version 1 December 2017
1/14




SENSIRION

SDP31 Datasheet Preview

SDP31 Datasheet

Digital Differential Pressure Sensor

No Preview Available !

1. Sensor Performance
1.1 Differential Pressure Specification1
Parameter
Measurement range 2
Zero point accuracy 3,4
Span accuracy 3,4
Zero point repeatability 4
Span repeatability 4
Span shift due to
temperature variation
Offset stability
Flow step response time (τ63)
Resolution
Calibrated for
Media compatibility
Calibrated temperature
range
SDP31
- 500 to 500 Pa
(- 2 to 2 inH2O)
0.1 Pa
3% of reading
0.03 Pa
0.5% of reading
SDP32
- 125 to 125 Pa
(-0.5 to 0.5 inH2O)
0.08 Pa
3% of reading
0.025 Pa
0.5% of reading
< 0.5% of reading per 10°C
< 0.5% of reading per 10°C
< 0.01 Pa/year
< 3ms
16 bit
Air, N2
Air, N2, O2, non-condensing
< 0.01 Pa/year
-40 °C to +85 °C
1.2 Temperature Specification5
Parameter
Measurement range
Resolution
Accuracy
Repeatability
Value
-40 °C to +85 °C
16 bit
2 °C (-10 °C to +60 °C)
3 °C (-40 °C to +85 °C)
0.1°C
1 Unless otherwise noted, all sensor specifications are valid at 25°C with VDD = 3.3 V and absolute pressure = 966 mbar.
2 For other pressure ranges contact Sensirion
3 Includes repeatability
4 Total accuracy/repeatability is a sum of zero-point and span accuracy/repeatability.
5 The measured temperature is the temperature of the bulk silicon in the sensor. This temperature value is not only depending on the gas temperature, but
also on the sensor’s surroundings. Using the signal to measure solely the gas temperature will need special precautions, such as isolating the sensor from
external temperature influences.
www.sensirion.com
Version 1 December 2017
2/14


Part Number SDP31
Description Digital Differential Pressure Sensor
Maker SENSIRION
Total Page 14 Pages
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