DE-ACCM3D Datasheet, PDF (5/5 Pages) List of Unclassifed Manufacturers – Buffered ±3g Tri-axis Accelerometer

Powering external devices
It is possible to use the DE-ACCM3D’s voltage regulator to power external devices that require 3.3V, such as
a low voltage microcontroller. These devices must be extremely low power so as to not overload the
regulator! The maximum current that can be drawn in this way is 50mA, but ideally you should try keep
things below 10mA. This diagram shows how to connect up an example microcontroller and all 3 axes.
Additional capacitance across the microcontroller’s power pins may be necessary, depending on your
particular setup.
Protection features
Reverse voltage
In the event that you mix up VCC and GND, a P channel MOSFET will prevent current from flowing –
protecting the DE-ACCM3D from damage. This protection is only designed to work with DC voltages. Do not
apply AC voltages to the power pins.
Output shorting
The operational amplifier driving the DE-ACCM3D’s outputs is capable of handling a direct short from the X,
Y and Z outputs to ground for as long as you want.