The **MAH13TAD-R** is a high-performance, ultra-low power **MEMS (Micro-Electro-Mechanical Systems) Absolute Pressure Sensor**. It is designed specifically for applications requiring high precision and stability in compact electronic devices. --- ## 1. Technical Specifications The following table summarizes the primary electrical and physical characteristics of the MAH13TAD-R: | Parameter | Specification | | :--- | :--- | | **Pressure Range** | 260 to 1260 hPa | | **Interface** | I2C / SPI (Digital) | | **Supply Voltage (Vdd)** | 1.7V to 3.6V | | **Absolute Accuracy** | ±0.5 hPa | | **Relative Accuracy** | ±0.06 hPa (High resolution mode) | | **Current Consumption** | ~4 μA (Standard mode) | | **Package Size** | ~2.0 x 2.0 x 0.76 mm (LGA package) | --- ## 2. Key Electronic Features * **Integrated Temperature Sensor:** The device includes a built-in temperature sensor used to compensate for thermal drift, ensuring pressure readings remain accurate across different environments. * **FIFO Buffer:** It often features an embedded First-In-First-Out buffer, which allows the host processor to sleep while the sensor collects data, significantly reducing system-level power consumption. * **Digital Output:** It converts analog pressure signals into digital 24-bit data, eliminating the need for external Analog-to-Digital Converters (ADCs). * **Low Noise Floor:** The sensor is engineered for high-resolution altitude sensing, capable of detecting changes as small as a few centimeters. --- ## 3. Typical Pin Configuration (LGA-10) Below is a common pinout representation for this series of MEMS sensors: ```text 1. VDDIO - Digital I/O supply voltage 2. SCL/SPC - I2C serial clock / SPI serial port clock 3. SDA/SDI - I2C serial data / SPI serial data input 4. SDO/SA0 - SPI serial data output / I2C slave address selection 5. CS - Chip select (1 = I2C mode, 0 = SPI mode) 6. INT_DRDY - Interrupt / Data Ready signal 7. GND - Ground 8. VDD - Analog supply voltage ``` --- ## 4. Common Applications The MAH13TAD-R is primarily used in mobile and wearable electronics where space and power are constrained: * **Smartphones:** For indoor navigation (floor detection) and GPS enhancement. * **Wearables:** Altimeters and barometers for fitness tracking (steps/stairs climbed). * **Drones:** Precise altitude hold and vertical stability. * **Weather Stations:** Portable barometric pressure monitoring.