Digital I2C Output MEMS Accelerometer SENSORTEK STK8BA58 LGA 12PIN with Motion Detection Interrupts
Product Overview
The STK8BA58 is a low-profile, capacitive MEMS 3-axis linear accelerometer with a digital I2C output. It offers dynamically selectable full-scale ranges of 2g, 4g, or 8g, with 12-bit digital conversion at user-configurable sample rates from 14 to 2000 samples per second. The device features compensation for 0g offset and gain errors, a high shock survivability of 10000g, and on-chip interrupt generation for motion detection (new data, any-motion, significant motion). It operates over an extended temperature range (-40C to +85C) and is available in a compact 2.0mm x 2.0mm x 1.0mm LGA package, supporting low-power consumption through a sleep feature.
Product Attributes
- Brand: Sensortek Technology Corp.
- Material: MEMS
- Certifications: RoHS Compliant, Halogen Free, Environmentally Preferred Product
- Origin: Taiwan (implied by www.sensortek.com.tw)
Technical Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
| POWER SUPPLY | Operating Voltage Range (VS) | 1.7 | 2.6 | 3.6 | V |
| Interface Voltage Range (VDDIO) | 1.62 | 2.6 | 3.6 | V | |
| Current Consumption | Normal Mode | - | 110 | - | A |
| Suspend Mode | - | 1 | - | A | |
| Low-Power Mode (Sleep duration=25 ms, Bandwidth=1k Hz) | - | 7 | - | uA | |
| Start-Up Time (POR, Bandwidth=1k Hz) | - | - | 3 | - | ms |
| Input Voltage Levels | Digital high level input voltage (VIH) | 0.7 x VDDIO | - | - | V |
| Digital low level input voltage (VIL) | - | 0.3 x VDDIO | - | V | |
| Output Voltage Levels | High level output voltage (VOH) | 0.8 x VDDIO | - | - | V |
| Low level output voltage (VOL) | - | 0.2 x VDDIO | - | V | |
| OUTPUT DATA RATE AND BANDWIDTH | Bandwidth (BW) | 7.81 | - | 1000 | Hz |
| Output data rate (ODR) in normal mode | - | BW * 2 | - | Hz | |
| Each axis Bandwidth (BW) | - | - | 1000 | Hz | |
| Output data rate (ODR) in normal mode | - | - | 2000 | Hz | |
| Measurement Range (Each axis) | User selectable | 2, 4, 8 | - | g | |
| Non-linearity | Percentage of full scale | - | 0.5 | - | %FS |
| Cross-Axis Sensitivity | - | - | 1 | % | |
| Output Resolution (Each axis) | 2 g Range, 12-bit resolution | - | 1024 | - | LSB/g |
| Sensitivity | Each axis, 4g, 12-bit resolution | - | 512 | - | LSB/g |
| Sensitivity | Each axis, 8g, 12-bit resolution | - | 256 | - | LSB/g |
| Sensitivity Change Due to Temperature | X-, Y-, Z-Axes | - | 0.02 | - | %/C |
| 0 g OFFSET | Each axis | - | 100 | - | mg |
| 0 g Offset Change Due to Temperature | X-, Y-, Z-Axes | - | 1 | - | mg/C |
| NOISE | X-, Y-, Z-Axes, 2g, 12-bit resolution, Bandwidth = 1k Hz | - | 200 | - | g/sqrt(Hz) |
| Package | - | - | 2.0 x 2.0 x 1.0 | - | mm LGA |
| Operating Temperature Range | - | -40 | - | +85 | C |
| Storage Temperature Range | - | -40 | - | +125 | C |
| High Shock Survivability | - | - | 10000 | - | g |
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