BMA140 Triaxial Analog Acceleration Sensor
Product Overview
The BMA140 is a fully calibrated, triaxial low-g analog acceleration sensor designed for consumer market applications. It measures static and dynamic accelerations along three perpendicular axes, enabling absolute orientation detection in a gravity field and free-fall detection. This compact sensor module is built upon Bosch's automotive-proven MEMS wafer-fabrication technology, offering ultra-low power consumption and a fast wake-up time. It is ideal for tilt, motion, and vibration sensing in a wide range of applications including gaming, virtual reality, wearables, mobile devices, PDAs, navigation systems, and computer peripherals.
Product Attributes
- Brand: Bosch Sensortec
- Technology: MEMS (Micro Electro Mechanical System)
- Package Type: 12-pin LGA (Land Grid Array)
- Compliance: RoHS compliant and Pb-free
- Origin: Based on automotive-proven Bosch MEMS wafer-fabrication technology & processes
Technical Specifications
| Parameter | Symbol | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Acceleration range | gFS | 4 | g | |||
| Supply voltage | VDD | 1.8 | 3.0 | 3.5 | V | |
| Supply current in normal mode | IDD | analog and digital | 200 | 290 | A | |
| Supply current in stand-by mode | IDDsbm | analog and digital | 0.7 | A | ||
| Operating temperature | TA | full performance | -40 | +85 | C | |
| Zero-g voltage | VOff | VDD = 3.0V | 1.455 | 1.500 | 1.545 | V |
| Zero-g voltage | VOff | 1.8V VDD 3.5V | VDD / 2 | V | ||
| Sensitivity | S | VDD = 3.0V | 0.288 | 0.300 | 0.312 | V/g |
| Sensitivity | S | 1.8V VDD 3.5V | 4% VDD / 10 | V/g | ||
| Bandwidth (1st order filter) | f-3dB | with 1nF connected to Ax, Ay, Az | 1.500 | kHz | ||
| Output noise | nrms | 220 | g/Hz | |||
| Start-up time | Tst_up | with 1nF connected to Ax, Ay, Az | 3 | ms | ||
| Wake-up time | Tw_up | with 1nF connected to Ax, Ay, Az | 1 | ms | ||
| Output resistance | Rx, Ry, Rz | On chip | 33 | k | ||
| Package dimensions | 3mm x 3mm | footprint | ||||
| Package height | 0.9 | mm |
2410311334_Bosch-BMA140_C20478931.pdf
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