PART NUMBER: 3g Tri-axis Accelerometer KXSS5-4457 Rev. 3 Specifications Feb-2013 Product Description The KXSS5-4457 is a Tri-axis, silicon micromachined accelerometer with a full-scale output range of +/-3g (29.4 m/s/s). The sense element is fabricated using Kionixs 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, self- test, and temperature compensation. The accelerometer is delivered in a 5 x 3 x 0.9 mm LGA plastic package operating from a 1.8 3.6V DC supply. The ASIC will trigger interrupt signals if an acceleration threshold is exceeded in any axis (motion interrupt), or if the total acceleration falls below a threshold (freefall interrupt). The thresholds can be set by the customer or 2 default to factory calibrated values. Either I C or SPI interfaces can be used to communicate to the chip to trigger A/D conversions, set thresholds or threshold delays, or manage power consumption. Functional Diagram X Sensor 32K 7 Y Charge 1kHz 32K 8 Sensor Amp LPF 32K 9 Z Temp Sensor Sensor 14 Vdd A/D 2 SPI/I C/Logic 6 Enable 11 Interrupt Logic GND 10 12 2 3 4 5 36 Thornwood Dr. Ithaca, NY 14850 2013 Kionix All Rights Reserved tel: 607-257-1080 fax:607-257-1146 584-4259-1302251530 www.kionix.com - info kionix.com Page 1 of 31 PART NUMBER: 3g Tri-axis Accelerometer KXSS5-4457 Rev. 3 Specifications Feb-2013 Product Specifications Table 1. Mechanical (specifications are for operation at 1.8V and T = 25C unless stated otherwise) Parameters Units Min Typical Max Operating Temperature Range C -25 - 70 Zero-g Offset (analog) V 0.852 0.9 0.948 Zero-g Offset (digital) counts 1939 2048 2157 Zero-g Offset Variation from RT over Temp. mg/ C 0.6 Sensitivity (analog) mV/g 233 240 247 Sensitivity (digital) counts/g 530 546 562 0.01 (xy) Sensitivity Variation from RT over Temp. %/ C 0.03 (z) Offset Ratiometric Error (V = 1.8V 5%) % 0.3 dd 0.6 (xy) Sensitivity Ratiometric Error (V = 1.8V 5%) % dd 0.3 (z) 0.8 (xy) Self Test Output change on Activation g 0.6 (z) Non-Linearity % of FS 0.1 Cross Axis Sensitivity % 2 Noise Density (on filter pins) g / Hz 175 1 Freefall threshold g 0.4 1 Freefall delay ms 4 1 Motion threshold g 2.5 1 Motion delay ms 4 Notes: 2 1. Factory default settings. User can adjust thresholds and delays using I C or SPI interface. 36 Thornwood Dr. Ithaca, NY 14850 2013 Kionix All Rights Reserved tel: 607-257-1080 fax:607-257-1146 584-4259-1302251530 www.kionix.com - info kionix.com Page 2 of 31