Applications: Dual mobile altimeter/depth meter systems, Adventure or multi-mode watches, Diving computers

　　Description: The MS5803-05BA is a new generation of high resolution altimeter sensors from MEAS Switzerland with SPI and I2C bus interface. It is optimized for depth meters and altimeters with an altitude resolution of 30 cm. The sensor module includes a high linearity pressure sensor and an ultra low power 24 bit ΔΣ ADC with internal factory calibrated coefficients. It provides a precise digital 24 Bit pressure and temperature value and different operation modes that allow the user to optimize for conversion speed and current consumption. A high resolution temperature output allows the implementation of an altimeter/thermometer function without any additional sensor. The MS5803-05BA can be interfaced to virtually any microcontroller. The communication protocol is simple, without the need of programming internal registers in the device. The gel protection and antimagnetic stainless steel cap allows the use in 100m waterproof watches. This new sensor module generation is based on leading MEMS technology and latest benefits from MEAS Switzerland proven experience and know-how in high volume manufacturing of altimeter modules, which have been widely used for over a decade. The sensing principle employed leads to very low hysteresis and high stability of both pressure and temperature signal.

　　Features:

　　•High resolution module, 30cm
　　•Fast conversion down to 1 ms
　　•Low power, 1 µA (standby < 0.15 µA)
　　•Integrated digital pressure sensor (24 bit ΔΣ ADC)
　　•Supply voltage 1.8 to 3.6V
　　•Operating range: 0 to 5 bar, -40 to +85°C
　　•I²C and SPI (Mode 0, 3)
　　•No external components (Internal oscillator)
　　•Excellent long term stability
　　•Hermetically sealable for outdoor devices

　　典型应用: 高度/水深双重功能测量系统，运动手表，潜水设备

　　产品描述:

　　MS5803-05BA是MEAS瑞士分公司新一代的高分辨率（30cm）压力传感器，带有SPI和I2C两种接口，是水深测量和高度计的理想选择。传感器包括高线性度的压力传感元件和超级低功耗的24位ΔΣ ADC，内置工厂校准系数。MS5803-05BA提供高精度的24位压力和温度数字输出，客户可以根据应用需要配置转换速度和功耗。高分辨率的温度输出可以同时实现温度计的功能。MS5803-05BA可以与所有形式的微控器配合，通讯协议非常简单，无需修改内部寄存器。防水胶和防磁不锈钢圈使得传感器可以用于100米防水的运动表。这款新传感器模块基于先进的MEMS技术，并受益于MEAS过去十几年来在研发和批量生产气压/高度计方面的经验。先进的传感技术成就了低磁滞，高稳定性的压力/温度传感器。

　　特点:

　　高分辨率：30cm
　　转换速度快：1 ms
　　低功耗：1 μA（待机功耗 < 0.15 μA）
　　集成的数字式压力传感器（24位ΔΣ ADC）
　　供电电压：1.8 ~ 3.6 V
　　量程：0 ~ 5 bar，-40℃ ~ +85℃
　　I²C和SPI接口（模式0,3）
　　无需外部元件（内置振荡器）
　　优异的长期稳定性
　　完全密封，适合户外装置