The MMA7340L is a low power, low profile capacitive micromachined accelerometer featuring signal conditioning, a 1-pole low pass filter, temperature compensation, self test, 0g-Detect which detects linear freefall, and g-Select which allows for the selection between 2 sensitivities.
The MMA7340L is a low‑power, low‑profile capacitive micromachined 3‑axis accelerometer with selectable 3g or 12g sensitivity, sleep mode, and built‑in self‑test and free‑fall detection (Og‑Detect). It operates from 2.2 V to 3.6 V and consumes as little as 3 µA in sleep mode, making it suitable for handheld battery‑powered devices.
The document includes detailed electrical characteristics, pin descriptions, recommended PCB layout, mechanical dimensions, and typical applications such as gaming, mobile phones, laptops, and robotics. Ordering information for tape‑and‑reel and tray packages is also provided.
| Supply Voltage | 0.3 V to 3.6 V |
|---|---|
| Supply Current (typical) | 400 µA |
| Sleep Mode Current | 3 µA |
| Bandwidth (X/Y axes) | 400 Hz |
| Bandwidth (Z axis) | 300 Hz |
| Operating Temperature Range | -20 °C to +85 °C |
| Maximum Acceleration | +5000 g |
It provides a logic‑high signal when all three axes are at 0 g, enabling free‑fall protection.
By applying a logic level to the g‑Select pin, the device switches between 3 g and 12 g sensitivity.
The accelerometer draws about 3 µA when sleep mode is enabled.
It operates from 0.3 V up to 3.6 V supply voltage.