TE Connectivity / SMI SM933x Digital Differential Pressure Sensors
TE Connectivity / SMI SM933x Digital Differential Pressure Sensors are high-precision sensors for ultra-low-pressure measurements. The SM933x sensors offer state-of-the-art Micro-ElectroMechanical Systems (MEMS) pressure transducer technology and CMOS mixed signal processing technology. These differential pressure sensors combine pressure sensors with a signal-conditioning Application-Specific Integrated Circuit (ASIC) in a single package.
The SM933x sensors provide less than 1%Full Scale (FS) total accuracy after board mount and system level autozero. These differential pressure sensors mount directly on a circuit board and the high-level calibrated pressure signal is accessible from the 16-bit I2C digital interface. The SM933x sensors are available in JEDEC standard SOIC-16 packages with a dual vertical porting option. These components provide a pressure calibrated and temperature compensated output. Typical applications include sleep apnea, CPAP, ventilators, pressure transmitters, and airflow measurement.
Features
- MEMS pressure transducer and CMOS mixed signal processing technologies
- 125Pa and 250Pa differential pressure ranges
- <1%FS accuracy after autozero
- 16-bit I2C digital interface
- JEDEC standard SOIC-16 package
- Pressure calibrated and temperature compensated output
- Excellent warmup behavior and long-term stability
- REACH, RoHS, and PFOS/PFOA compliant
Applications
- Medical
- Sleep apnea
- Continuous Positive Airway Pressure (CPAP)
- Ventilators
- Gas flow instrumentation
- Airflow monitors
- Life sciences
- Industrial
- Heating, Ventilation, and Air Conditioning (HVAC)
- Pressure transmitters
- Pneumatic gauges
- Pressure switches
- Safety cabinets
- Gas flow instrumentation
Specifications
- 3V to 5.5V supply voltage (VDD)
- -0.3V to (VDD+0.3)V digital IO voltage
- ±10mA maximum digital I/O current
- 7kPa minimum proof pressure
- 20kPa minimum burst pressure
- -2kV to 2kV ESD Human Body Model (HBM) protection at all pins
- Temperature ranges
- -20°C to +85°C compensated
- -40°C to +125°C storage
Dimensions
發佈日期: 2018-05-22
| 更新日期: 2023-08-17