KX134-1211 Datasheet | Kionix

Description The KX134-1211 is a tri-axis ±8g, ±16g, ±32g, or ±64g silicon micromachined accelerometer featuring a user-configurable 3-stage Advanced Data Path (ADP) consisting of a low-pass filter, low-pass/high-pass filter, and RMS calculation engine. The KX134-1211 accelerometer also features an advanced Wake-Up and Back-to-Sleep detection with a high-resolution threshold capability configurable down to 15.6 mg, 512-byte buffer that continues to record data even when being read, as well as embedded engines for orientation, Directional-Tap TM/Double Tap TM, and Free fall detection. 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 accelerationinduced motion of the sense element, which further utilizes mon 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 wafer. A separate ASIC device packaged with the sense element provides signal conditioning and intelligent user-programmable application algorithms. The KX134-1211 accelerometers offer lower noise and improved linearity over of the entire temperature range. The accelerometer is delivered in a 2 x 2 x 0.9 mm LGA 12-pin plastic package operating from a 1.7V - 3.6V (VDD) / 1.2V - 3.6V (IO_VDD) DC supplies. Internal voltage regulators are used to maintain constant internal operating voltages over the range of input supply voltages. This results in stable operating characteristics even if the supply voltage changes. I²C or SPI digital protocol is supported to configure the chip, read acceleration outputs, and check for updates to the orientation, Directional-Tap TM/Double-Tap TM detection, Free fall detection, and activity monitoring algorithms. Two configurable interrupt pins are also available to show the output of the...