Feature
Product Description
The KX122-1037 is a tri-axis ±2g, ±4g or ±8g silicon micromachined accelerometer with integrated 2048 byte buffer, orientation, tap/double tap, activity detecting, and Free fall algorithms.
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 intelligent user-programmable application algorithms.
The accelerometer is delivered in a 2 x 2 x 0.9 mm LGA plastic package operating from a 1.71 – 3.6V DC supply. Voltage regulators are used to maintain constant internal operating voltages over the range of input supply voltages.
This results in stable operating characteristics over the range of input supply voltages. I 2C or SPI digital protocol is used to communicate with the chip to configure and check for updates to the orientation, Directional TapTM detection, Free fall detection and activity monitoring algorithms.
Features
2 x 2 x 0.9 mm LGA
User-selectable g Range up to ± 8g
User-selectable Output Data Rate up to 25600Hz
User-selectable low power or high resolution mode
Digital High-Pass Filter Outputs
Extra large embedded 2048 byte FIFO/FILO buffer
Low Power Consumption with FlexSet™ Performance Optimization
Internal voltage regulator
Enhanced integrated Free fall, Directional Tap/Double-TapTM, and Device-orientation Algorithms
User-configurable wake-up function
Digital I2C up to 3.4MHz
Digital SPI up to 10MHz
Lead-free Solderability
Excellent Temperature Performance
High Shock Survivability
Factory Programmed Offset and Sensitivity
Self-test Function
(Picture:Pinout / Diagram)
