± 2g Tri-axis Accelerometer
Specifications
PART NUMBER:
KXRB5-2050
Rev. 2
May-2014
36 Thornwood Dr. – Ithaca, NY 14850 © 2014 Kionix – All Rights Reserved
tel: 607-257-1080 – fax:607-257-1146 617-4464-1405071536
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Product Description
The KXRB5-2050 is a Tri-axis, silicon micromachined accelerometer with a
full-scale output range of +/-2g (19.6 m/s/s). The sense element is fabricated
using Kionix’s proprietary plasma micromachining process technology.
Acceleration sensing is based on the principle of a differential capacitance
arising from acceleration-induced motion of the sense element, which further
utilizes common mode cancellation to decrease errors from process variation,
temperature, and environmental stress. The sense element is hermetically
sealed at the wafer level by bonding a second silicon lid wafer to the device
using a glass frit. A separate ASIC device packaged with the sense element
provides signal conditioning and self-test. The accelerometer is delivered in a
5 x 3 x 0.9 mm LGA plastic package operating from a 2.5 – 5.25V DC supply.
There are 4 factory programmable modes of operation for the KXRB5:
Mode 00 – The three outputs (X, Y, Z) are read through the digital SPI interface, which is also used to
command Selftest and Standby Mode. The digital I/O pads are powered from a separate
power pin, and will interface to 1.8V logic.
Mode 01 – The three outputs (X, Y, Z) are provided on three analog output pins. The KXRB5 also
features an integrated 3-channel multiplexer (X, Y, Z). The Enable pin must be high for
normal operation and low for power shutdown.
Mode 10 – The three outputs (X, Y, Z) are provided on three analog output pins. The KXRB5 also
features an integrated 4-channel multiplexer (X, Y, Z, Aux In). The Enable pin must be
high for normal operation and low for power shutdown.
Mode 11 – The three outputs (X, Y, Z) are provided on three analog output pins. The KXRB5 also
features an integrated 4-channel multiplexer (X, Y, Z, Aux In). The Enable pin must be
low for normal operation and high for power shutdown.
The KXRB5-2050 is factory programmed to be in MODE 10.
