Datasheet Infineon DPS310 — 数据表

Product Brief DPS310 Digital Barometric Pressure Sensor for Mobile and Wearable Devices
Description The DPS310 is a miniaturized Digital Barometric Air Pressure Sensor with a high accuracy level and low current consumption. The DPS310 is both a pressure and temperature sensor. The pressure sensor element is based on a capacitive principle which guarantees high precision during temperature changes. The small package makes the DPS310 ideal for mobile applications and wearable devices. The DPS310's internal signal processor converts the output from the pressure and temperature sensor elements to 24-bit results. Each pressure sensor has been calibrated individually and contains calibration coefficients. The coefficients are used in the application to convert the measurement results to true pressure and temperature values. The sensor has a FIFO that can store the latest 32 measurements. Since the host processor can remain in a sleep mode for a longer period between readouts, a FIFO can reduce the system power consumption. Sensor measurements and calibration coefficients are available via the serial I2C / SPI interface. Typical Applications Indoor navigation ­ Floor detection e.g. in shopping malls and parking garages Health and sports ­ Accurate elevation gain and vertical speed Outdoor navigation ­ GPS start-up time and accuracy improvement ­ Dead-reckoning e.g. in tunnels Local weather station Features Operation range: ­ Pressure: 300 . 1200hPa ­ Temperature: -40 . 85°C Pressure level precision: ­ ±0.006hPa (or ±5cm) (high-precision mode) Pressure sensor relative accuracy: ­ ±0.06hPa (or ±0.5m) Temperature accuracy: ­ ±0.5°C Pressure temperature sensitivity: ­ < 0.5Pa/K Measurement time: ­ Low-power mode: 3ms Average current consumption: ­ Low power: 3µA (1 measurement/sec.) ­ Standby: < 1µA Supply voltage: ­ VDDIO: 1.2 . 3.6V ­ VDD: 1.7 . 3.6V Operating modes: ­ Command (manual) ­ Background (automatic) ­ Standby Interface: ­ I2C and SPI (both with optional interrupt) Package dimensions: ­ 8-pin LGA ­ 2.0mm x 2.5mm x 1.0mm www.infineon.com Product Brief Pressure Sensor for Mobile Devices
Digital Barometric Air Pressure Sensor
Functional Block Diagram
Temperature Sensor MUX ADC Digital Signal Processing Digital Core Digital Interface I2C/SPI Capacitive Pressure Sensor Calibration Coefficients VDDIO Memory Interface Voltage Regulators VDD FIFO Application Circuit Example (in I2C configuration) Processor
I2C Serial Interface SDA SCK INT R VDDIO SDI SCK VDDIO 1.2 . 3.6V C Interrupt (optional) N.C. SDO CSB Pressure Sensor GND GND VDD 1.7 . 3.6V C Pin Configurat …