Melexis MLX90821 Relative Pressure Sensors
Melexis MLX90821 Relative Pressure Sensors are factory-calibrated relative pressure sensors that deliver a ratiometric analog output or a digital signal using the SENT protocol. MLX90821 features a MEMS sensor that enables reliable and accurate measurement of low pressures of a few tenths of millibars. These Melexis relative pressure sensors include an optimized architecture and high-density CMOS technology. These design features provide leading automotive electromagnetic compatibility (EMC) performance. The digital-signal-processor architecture uses a 16-bit microcontroller to provide high initial accuracy of pressure and optional external NTC temperature.
Features
- High accuracy relative pressure sensor
- Ratiometric analog output or digital SENT output with available compensated ±1°C accurate NTC temperature information
- System in a package
- MEMS
- Analog front-end circuitry
- 16-bit microcontroller
- Analog back-end circuitry
- Voltage regulators
- Automotive qualified and automotive diagnostic features
- Clamping levels
- Broken track diagnostics
- Multiple internal fault diagnostics
- Factory-calibrated or fully programmable through the connector for customized calibration curves
- Backside exposed relative pressure sensor for higher resistance to common automotive media
- Robust, easy-to-seal package
Applications
- Fuel vapor pressure sensors
- Crankcase ventilation pressure sensors
- Pressure sensors for filter monitoring
Specifications
- 18V supply voltage
- -14V reverse voltage protection
- 18V positive output voltage
- -0.5V reverse output voltage
- -40°C to +150°C automotive temperature range
- -40°C to +125°C programming temperature range
- 3.75bar burst pressure at room temperature
Functional Diagram
Videos
Publié le: 2019-10-21
| Mis à jour le: 2023-06-05