Datasheet SDP3x-Analog Differential Pressure Sensor with Analog Output Smallest size enables portable applications Reflow solderable Pick & Place Configurable analog output Calibrated and temperature compensated Excellent repeatability, no drift Product Summary The SDP3x sensor family is Sensirions 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 Sensirions new differential pressure and flow sensing platform. The analog SDP3x sensors offer a calibrated and temperature compensated analog voltage output. The output signal is configurable: different measurement speeds, output curves and temperature compensations can be selected even dynamically during operation mode. Benefits of Sensirions 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. Package Outline..................................................................... 6 5. Soldering ................................................................................ 7 6. Shipping Package .................................................................. 8 7. Ordering Information .............................................................. 8 Revision History .............................................................................. 8 Important Notices ........................................................................... 9 Headquarters and Subsidiaries ...................................................... 9 www.sensirion.com Version 1 December 2017 1/9 1. Sensor Performance 1 1.1 Differential Pressure Specification Parameter Configuration SDP36 SDP37 2 Measurement range Linear - 50 to 500 Pa - 12.5 to 125 Pa (-0.2 to 2 inH O) (-0.05 to 0.5 inH O) 2 2 Square Root - 500 to 500 Pa - 125 to 125 Pa (- 2 to 2 inH2O) (- 0.5 to 0.5 inH2O) 3,4,5 5 5 Zero point accuracy 0.1 Pa 0.08 Pa 3,4,5 5 5 Span accuracy 3% of reading 3% of reading 4,5 5 5 Zero point repeatability 0.03 Pa 0.025 Pa 4,5 5 5 Span repeatability 0.5% of reading 0.5% of reading Span shift due to temperature < 0.5% of reading per 10C < 0.5% of reading per 10C variation Offset stability < 0.01 Pa/year < 0.01 Pa/year Slow < 9 ms Response time ( ) 63 Fast < 5 ms Internal digital resolution 16 bit Calibrated for Air, N 2 Media compatibility Air, N O , non-condensing 2, 2 Calibrated temperature range -40 C to +85 C 1 Unless otherwise noted, all sensor specifications are valid at 25C 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 Output voltage integral non linearity and output voltage noise are not included and defined later in chapter 2.1. Note that the effect of output voltage integral non linearity and output voltage noise on accuracy is highly dependent on the output configuration (linear or square root). www.sensirion.com Version 1 December 2017 2/9