The MMA7331L is a low power, low profile capacitive micromachined accelerometer featuring signal conditioning, a 1-pole low pass filter, temperature compensation, self test, and g-Select which allows for the selection between 2 sensitivities. Zero-g offset and sensitivity are factory set and require no external devices. The MMA7331L includes a Sleep Mode that makes it ideal for handheld battery powered electronics. Typical applications include 3D gaming, HDD MP3 players, laptop PCs, cell phones, pedometers, PDAs, navigation, and dead reckoning.
The MMA7331L is a low‑power, low‑profile capacitive micromachined accelerometer featuring integrated signal conditioning, a single‑pole low‑pass filter, temperature compensation, self‑test, and selectable 4g or 12g sensitivity via the g‑Select pin. It operates from 2.2 V to 3.6 V and offers a sleep mode current as low as 3 pA, making it suitable for handheld battery‑powered electronics.
Typical applications include 3‑D gaming, hard‑disk protection, laptop anti‑theft, mobile phone image stabilization, pedometers, PDA scrolling, navigation, robotics, and other motion‑sensing tasks. The device is supplied in a 14‑lead LGA‑14 package (3 mm × 5 mm × 1.0 mm) and is RoHS‑compliant.
| Supply Voltage | 2.2 V – 3.6 V |
|---|---|
| Supply Current (typical) | 400 pA |
| Sleep Mode Current | 3 pA (typ.) |
| Sensitivity (4 g) | 308 mV/g |
| Bandwidth (X/Y) | 400 Hz |
| Bandwidth (Z) | 300 Hz |
| Output Impedance | 24 kΩ – 40 kΩ |
| Maximum Acceleration | +5000 g |
| Operating Temperature Range | -40 °C to +85 °C |
| Package Size | 3 mm × 5 mm × 1.0 mm LGA‑14 |
The device operates from 2.2 V to 3.6 V supply voltage.
In sleep mode the device draws as little as 3 pA typical current.
The 4 g range provides a sensitivity of about 308 mV per g.