KXUD9-2050

PART NUMBER: ± 2g / 4g / 6g / 8g Tri-axis Digital Accelerometer Specifications KXUD9-2050 Rev. 1 Sep-2010 Product Description The KXUD9 is a tri-axis silicon micromachined accelerometer with a user selectable full-scale output range of ±2g, ±4g, ±6g or ±8g. 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 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 3 x 3 x 0.9 mm LGA plastic package operating from a 1.8 – 3.6V DC supply. Either I2C or SPI interfaces can be used to communicate to the chip to trigger A/D conversions or manage power consumption. Functional Diagram X Sensor Y Sensor Charge Amp Z Sensor LPF Temp Sensor Vdd 5 A /D 2 SPI/I C IO Vdd 1 3 AUX IN GND 4 6 36 Thornwood Dr. – Ithaca, NY 14850 tel: 607-257-1080 – fax:607-257-1146 www.kionix.com - info@kionix.com 8 9 10 © 2011 Kionix – All Rights Reserved 329-2177-1105091427 Page 1 of 23 PART NUMBER: ± 2g / 4g / 6g / 8g Tri-axis Digital Accelerometer Specifications KXUD9-2050 Rev. 1 Sep-2010 Product Specifications Table 1. Mechanical (specifications are for operation at 3.3V and T = 25C unless stated otherwise) Parameters Units Min Typical ºC -40 - 85 Zero-g Offset counts 1905 2048 2191 Zero-g Offset Variation from RT over Temp. mg/ºC FS1=1, FS0=1 (± 2g) 794 819 844 FS1=1, FS0=0 (± 4g) 390 410 430 257 273 289 189 205 221 Operating Temperature Range 1 Sensitivity FS1=0, FS0=1 (± 6g) counts/g FS1=0, FS0=0 (± 8g) 0.5 %/ºC 0.01 (xy) 0.04 (z) Offset Ratiometric Error (Vdd = 3.3V ± 5%) % 0.4 Sensitivity Ratiometric Error (Vdd = 3.3V ± 5%) % 0.7 Self Test Output change on Activation g 1.9 (x) 1.8 (y) 1.4 (z) Hz 3500 (xy) 1800 (z) % of FS 0.1 Sensitivity Variation from RT over Temp. Mechanical Resonance (-3dB) Non-Linearity Cross Axis Sensitivity Noise Density (on filter pins) 2 Max % 2 g / √Hz 750 Notes: 1. User selectable from CTRL_REGC 2. Resonance as defined by the dampened mechanical sensor. 36 Thornwood Dr. – Ithaca, NY 14850 tel: 607-257-1080 – fax:607-257-1146 www.kionix.com - info@kionix.com © 2011 Kionix – All Rights Reserved 329-2177-1105091427 Page 2 of 23 PART NUMBER: ± 2g / 4g / 6g / 8g Tri-axis Digital Accelerometer Specifications KXUD9-2050 Rev. 1 Sep-2010 Table 2. Electrical (specifications are for operation at 3.3V and T = 25C unless stated otherwise) Parameters Supply Voltage (Vdd) Operating I/O Pads Supply Voltage (VIO) Current Consumption Operating (full power) Standby 1 Output Low Voltage Output High Voltage Input Low Voltage Input High Voltage Input Pull-down Current LPF (-3dB) = 50Hz LPF (-3dB) = 100Hz 2 Power Up Time LPF (-3dB) = 500Hz LPF (-3dB) = 1,000Hz LPF (-3dB) = 2,000Hz A/D Conversion time SPI Communication Rate 2 I C Communication Rate Bandwidth (-3dB) 4 3 Units Min Typical Max V 1.8 3.3 3.6 220 320 V 1.7 A 120 V V V V 0.9 * Vio 0.8 * Vio A ms s MHz Vdd 0.3 0 15.9 8.0 1.6 0.8 0.4 200 1 400 kHz Hz 0.3 * Vio 0.2 * Vio - 40 50 60 Notes: 2 1. Assuming I C communication and minimum 1.5kΩ pull-up resistor on SCL and SDA. 2. Power up time is determined after the enabling of the part and is determined by the lowpass filter (LPF) set in CTRL_REGC. 3. SPI Communication Rate can be optimized for faster communication per the SPI timing diagram below. 4. Factory programmable to have a switched capacitor low pass filter at 2kHz, 1kHz, 500Hz, 100Hz, 50Hz or no low pass filter. Optionally, the user can define with in CTRL_REGC. Maximum defined by the frequency response of the sensors. 36 Thornwood Dr. – Ithaca, NY 14850 tel: 607-257-1080 – fax:607-257-1146 www.kionix.com - info@kionix.com © 2011 Kionix – All Rights Reserved 329-2177-1105091427 Page 3 of 23 PART NUMBER: ± 2g / 4g / 6g / 8g Tri-axis Digital Accelerometer Specifications KXUD9-2050 Rev. 1 Sep-2010 KXUD9 SPI Timing Diagram t1 t2 t3 t4 t5 t6 t7 nCS SCLK SDI bit 7 bit 6 bit 1 5 bit 0 SDO bit 7 5 bit 7 5 t8 t9 bit 6 bit 1 5 bit 0 bit 6 bit 1 5 bit 0 t10 t11 Table 3. SPI Timing Number Description MIN MAX Units t1 t2 t3 t4 t5 t6 t7 t8 t9 t10 t11 Enable transition from low to high after Vdd above 1.6V nCS low to first SCLK setup time SCLK pulse width: high (Does not apply to the last bit of a byte.) SCLK pulse width: low (Does not apply to the last bit of a byte.) SCLK pulse width: high (Only on last bit of a byte.) SCLK pulse width: low (Only on last bit of a byte.) nCS low after the final SCLK falling edge nCS pulse width: high SDI valid to SCLK rising edge SCLK rising edge to SDI invalid SCLK falling edge to SDO valid SCLK falling edge to SDO invalid Recommended SPI SCLK A/D conversion SCLK hold (t5) 1 130 130 130 200 350 350 130 10 100 0 1 200 130 - ms ns ns ns ns ns ns ns ns ns ns ns us us Notes 36 Thornwood Dr. – Ithaca, NY 14850 tel: 607-257-1080 – fax:607-257-1146 www.kionix.com - info@kionix.com © 2011 Kionix – All Rights Reserved 329-2177-1105091427 Page 4 of 23 PART NUMBER: ± 2g / 4g / 6g / 8g Tri-axis Digital Accelerometer Specifications KXUD9-2050 Rev. 1 Sep-2010 Table 4. Environmental Parameters Units Min Typical Max Supply Voltage (Vdd) Absolute Limits Operating Temperature Range Storage Temperature Range V ºC ºC -0.3 -40 -55 - Mech. Shock (powered and unpowered) g - - ESD V - - 6.0 85 150 5000 for 0.5ms 10000 for 0.2ms 2000 HBM Caution: ESD Sensitive and Mechanical Shock Sensitive Component, improper handling can cause permanent damage to the device. This product conforms to Directive 2002/95/EC of the European Parliament and of the Council of the European Union (RoHS). Specifically, this product does not contain lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE) above the maximum concentration values (MCV) by weight in any of its homogenous materials. Homogenous materials are "of uniform composition throughout." HF This product is halogen-free per IEC 61249-2-21. Specifically, the materials used in this product contain a maximum total halogen content of 1500 ppm with less than 900-ppm bromine and less than 900-ppm chlorine. Soldering Soldering recommendations are available upon request or from www.kionix.com. 36 Thornwood Dr. – Ithaca, NY 14850 tel: 607-257-1080 – fax:607-257-1146 www.kionix.com - info@kionix.com © 2011 Kionix – All Rights Reserved 329-2177-1105091427 Page 5 of 23 PART NUMBER: ± 2g / 4g / 6g / 8g Tri-axis Digital Accelerometer Specifications KXUD9-2050 Rev. 1 Sep-2010 Application Schematic SDA/SDO 10 IO Vdd 1 9 SCL/SCLK 2 8 ADDR/SDI KXUD9 AUX IN 3 7 4 6 CS 5 C1 Vdd Table 5. KXUD9 Pin Descriptions Pin Name Description 1 IO Vdd The power supply input for the digital communication bus 2 DNC 3 AUX IN 4 GND Ground 5 Vdd The power supply input. Decouple this pin to ground with a 0.1uF ceramic capacitor. 6 nCS SPI Enable I2C/SPI mode selection (1 = I2C mode, 0 = SPI mode) 7 DNC Reserved – Do Not Connect 8 ADDR/SDI I2C programmable address bit/SPI Serial Data Input 9 SCL/SCLK I2C Serial Clock/SPI Serial Clock 10 SDA/SD0 I2C Serial Data/SPI Serial Data Output 36 Thornwood Dr. – Ithaca, NY 14850 tel: 607-257-1080 – fax:607-257-1146 www.kionix.com - info@kionix.com Reserved – Do Not Connect Auxiliary Input for analog/digital conversion © 2011 Kionix – All Rights Reserved 329-2177-1105091427 Page 6 of 23 PART NUMBER: ± 2g / 4g / 6g / 8g Tri-axis Digital Accelerometer Specifications KXUD9-2050 Rev. 1 Sep-2010 Test Specifications ! Special Characteristics: These characteristics have been identified as being critical to the customer. Every part is tested to verify its conformance to specification prior to shipment. Table 6. Test Specifications Parameter Zero-g Offset @ RT Sensitivity @ RT Current Consumption -- Operating 36 Thornwood Dr. – Ithaca, NY 14850 tel: 607-257-1080 – fax:607-257-1146 www.kionix.com - info@kionix.com Specification 2048 +/- 143 counts 819 +/- 24.6 counts/g 120