MEMS 3-axis accelerometer
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 ML8953A
MEMS-based 3D Accelerometer with digital output, temperature sensor and factory calibration.
Description
The ML8953A is a 3-axis accelerometer based on the piezo-resistive sensing principle, it
provides digital data output.
The internal logic circuitry consists of a MCU with embedded Flash ROM, and by supporting both I²C and SPI interface to host controller, the ML8953A flexibly addresses customer needs in terms of connectivity.
The internal MCU offers several features that allow taking much of operational load off the customer’s host controller. The internal Flash ROM is used also to store factory calibration data, taking the additional calibration steps off the customer’s manufacturing line.
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Key Features
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- MEMS-based 3D Accelerometer
- Detects static and dynamic acceleration on three orthogonal axes
- Digital output: temperature, acceleration (component and vector), roll/pitch angles
- Factory calibration and internal temperature compensation
- Automatic measurement, continuous or interruption mode, polling mode, average output
- Programmable trigger threshold of acceleration levels
- Multi-task sensor with intelligent functions
- Internal 8bit MCU with Flash ROM for individual programme data storage
- Optional pedometer algorithm available on chip to shorten design TAT
- Automatic free fall and rotational detection
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Block Diagram
ML8953A Block Diagram
Main Specifications
ML8953A Main Specifications
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Detection range: -3g to +3g (acceleration)
-180° to +180° (roll/pitch angle)
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Sensitivity: 10mg/bit (acceleration)
0.5° C/bit (temperature)
0.5° (roll/pitch angle)
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Temperature range: -20°C to +70°C
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Response frequency: 200 Hz
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Shock survivability: over 5000g
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Digital (I²C or SPI) interface to host controller
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Package: 18-pin LCC (QFN) ceramic package
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Size: 5.0 x 5.0 x 1.15 (mm, typical)
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Operation voltage: 1.8 ~ 3.3 V (digital block)
2.5 ~ 3.3 V (analog block)
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Evaluation Board
ML8953A Evaluation Board
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Package Contents |
ML8953A evaluation board kit contains:
- ML8953A Demonstration and Evaluation base board
- ML8953A daughter board
- user´s manual
- optional pedometer functionality |
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