Product 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-TapTM/DoubleTapTM, 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 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 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-TapTM/Double-TapTM detection, Free fall detection, and activity monitoring

algorithms. Two configurable interrupt pins are also available to show the output of the embedded detection algorithms.

特性 Features

? Operating temperature range from -40oC to +105oC

? Small footprint: 2 x 2 x 0.9 mm LGA 12-pin package

? User-configurable g-range up to ±64g and Output Data Rate

up to 25600Hz

? A user-configurable 3-stage Advanced Data Path (ADP)

consisting of a low-pass filter, low-pass/high-pass filter, and

RMS calculation engine.

? High resolution Wake-Up / Back-to-Sleep functions with

threshold configurable down to 15.6 mg

? User accessible manufacturer and part ID registers

? Self-test Function

? Integrated Free fall, Directional-TapTM / Double-TapTM, and

Device-orientation algorithms

? Improved ODR accuracy in Low Power mode over

temperature

? Embedded 512-byte FIFO buffer continues to record data

even when being read

? User-selectable Low Power or High-Performance modes

? Internal voltage regulator

? Digital I2C up to 3.4MHz and Digital SPI up to 10MHz

? Excellent temperature performance with high shock

survivability

? RoHS / REACH compliant