The KX132-1211 and KX134-1211 accelerometers are part of the same family, and thus they share many of the same specifications. For instance, unlike consumer accelerometers, these parts are rated to operate at temperatures from -40 to +105°C. The power consumption of these parts was reduced significantly from the previous generation. In standby mode, the consumption is only 500 nA or 0.5 µA. In low-power mode, the power consumption starts at 0.53 µA and goes up as the sampling rate goes up. With that said, with sampling rates below 6.25 Hz, these parts still operate on less than 1 µA. Both parts can sample the signals up to 25,600 times per second and have an internal buffer capable of storing 512 Bytes of data. While the signal processing capabilities of these parts is the same, what makes them different is the internal MEMS sensor which measures the motion. KX132 is intended to measure lower g signals up to 16 g, with signal frequencies up to 4,200 Hz. At the same time, KX134 is designed with a stiffer MEMS sense element which can measure signals up to 64 g and signal frequencies up to 8,500 Hz. Working closely with companies in the machine health monitoring market, ROHM has learned that most of the signals of interest are below 4,200 Hz and can be addressed by KX132. However, there are applications where customers do need to measure vibrations at higher frequencies, or higher g, and this is where KX134 is the best and only choice among the digital accelerometers in this price range with internal signal processing capabilities. Finally, both parts come in a compact 2 x 2 x 0.9 mm LGA 12-pin package, making them an ideal choice for compact wireless modules.