Document
Low Power, Low Profile ±2 g Dual Axis Accelerometer with I2C Interface
MXC6202G/H/M/N
FEATURES
RoHS compliant I2C Slave, FAST (≤400 KHz.) mode interface 1.8V compatible IO Embedded Power up/down and self-test function www.DataSheet4U.com On-chip temperature sensor available Eight customer defined 7-bit addresses 2.7 V to 3.6 V single supply continuous operation Monolithic CMOS IC Low power consumption: typically <2 mA @ 3.0 V Resolution better than 1 milli-g On chip mixed signal processing >50,000 g shock survival rating Low profile LCC package: 5mm X 5mm X 1.55mm
TEMP TP Internal Oscillator VREF Temperature Sensor TEMP Coarse Gain Adj. Fine Gain Adj. No Connect X aixs CLK Coarse Gain Adj. Temp Comp. A/D No Connect VDD
CLK PD
CLK Heater Control
CLK TEMP CLK Fine Gain Adj. Temp Comp. IIC Convertor SCL SDA A/D CLK CLK
Y aixs Acceleration Sensor CLK
CLKTEMP GND
APPLICATIONS
Information Appliances – Cell Phones, PDA’s, Computer Peripherals, Mouse, Smart Pens Consumer – LCD Projectors, Pedometers, Blood Pressure Monitor, Digital Cameras Gaming – Joystick/RF Interface/Menu Selection/Tilt Sensing GPS – Electronic Compass Tilt Correction, Dead Reckoning Assist GENERAL DESCRIPTION The MXC6202G/H/M/N are low cost, dual axis accelerometers fabricated on a standard, submicron CMOS process. It is a complete sensing system with on-chip mixed signal processing and integrated I2C bus, allowing the device to be connected directly to a microprocessor eliminating the need for A/D converters or timing resources. The MXC6202G/H/M/N measures acceleration with a full-scale range of ±2 g and a sensitivity of 512counts/g (G/M) or 128counts/g (H/N) @3.0 V at 25°C. It can measure both dynamic acceleration (e.g. vibration) and static acceleration (e.g. gravity). The MXC6202G/H/M/N design is based on heat convection and requires no solid proof mass.
Information furnished by MEMSIC is believed to be accurate and reliable. However, no responsibility is assumed by MEMSIC for its use, or for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of MEMSIC.
MXC6202G/H/M/N FUNCTIONAL BLOCK DIAGRAM
This design eliminates the stiction problems associated with legacy technologies and provides shock survival greater than 50,000g’s. Memsic’s solid state design leads to significantly lower failure rates in customer applications and lower loss due to handling during manufacturing and assembly processes The MXC6202G/H/M/N is packaged in a hermetically sealed, low profile LCC surface mount package (5 mm x 5 mm x 1.55 mm) and is available in operating temperature ranges of 0°C to +70°C (G/H) and-40°C to +85°C(M/N). The MXC6202G/H/M/N provides two I2C digital outputs with 400 KHz, fast mode operation. The maximum noise floor is 1 mg/ Hz allowing signals below 1 milli-g to be resolved at 1 Hz bandwidth
©MEMSIC, Inc. 800 Turnpike St., Suite 202, North Andover, MA 01845 Tel: 978.738.0900 Fax: 978.738.0196 www.memsic.com
MEMSIC MXC6202G/H/M/N Rev.B
Page 1 of 10
11/10/2005
ELECTRICAL CHARACTERISTICS (Measurements @ 25°C, Acceleration = 0 g unless otherwise noted; VDD = 3.0V unless
otherwise specified)
Parameter
Measurement Range Nonlinearity Alignment Error2 Transverse Sensitivity3 Sensitivity Sensitivity Change Over Temperature
1
Conditions
Each Axis Best fit straight line
Min
±2.0
Typ
0.5 ±1.0 ±2.0 512 128
Max
1.0
Units
G % of FS degrees % counts/g counts/g % % counts counts mg/°C counts counts counts/°C counts/°C mg/ Hz mg Hz G µA mS V mA µA °C °C
Zero g Offset Bias Level
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Zero g Offset TC Tout Tout Sensitivity Noise Density, RMS Resolution Frequency Response Self-test Output Drive Capability Turn-On Time4 Operating Voltage Range Supply Current Power Down Current Operating Temperature Range
NOTES:
1 2
MXC6202G/M MXC6202H/N ∆ from 25°C MXC6202G/H MXC6202M/N MXC6202G/M MXC6202H/N ∆ from 25°C MXC6202G/M MXC6202H/N MXC6202G/M MXC6202H/N within 20Hz @ 1Hz. BW @ -3dB @ 2.7 V – 3.6 V
486 118 -10 -15 1996 492 2550 635 2.00 0.48
538 138 +8 +10 2100 532 2870 715 2.60 0.68 1.0 1.0 19 2.7 100 100 3.6 2.5 1.0 +70 +85
2048 512 0.8 2710 675 2.33 0.58 0.7 0.5 17 2.2 75 3.0 1.8
15 1.7
2.7
MXC6202G/H MXC6202M/N
0 -40
Guaranteed by measurement of initial offset and sensitivity
Alignment error is specified as the angle between the true and indicated axis of sensitivity
3
Cross axis sensitivity is the algebraic sum of the alignment and the inherent sensitivity errors
Output settled to within ± 17mg
4
MEMSIC MXC6202G/H/M/N Rev.B
Page 2 of 10
11/10/2005
I2C INTERFACE I/O CHARACTERISTICS
Parameter
Logic Input Low Level Logic Input High Level Hysteresis of Schmitt input Logic Output Low Level Input Leakage Current SCL Clock Frequency START Hold Time START Setup Time LOW period of SCL
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Symbol
VIL VIH Vhys VOL Ii fSCL tHD;STA tSU;STA tLOW tHIGH tHD;DAT tSU;DAT tr tf tBUF tSU;STO
.